Great Plains NH3 User Manual

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Table of Contents Index

Application Supplement

Using Anhydrous Ammonia Safely

Nutri-Pro® NH3 Safety

Manufacturing, Inc.

www.greatplainsmfg.com

Read this manual AND the operator’s manual entirely. When you see this symbol, the subsequent instructions and warnings are serious follow without exception. Your life and the lives of others depend on it!

31672

Illustrations may show implements and nurse tank that differ from those you are using.

ORIGINAL INSTRUCTIONS

Table of Contents Index

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Table of Contents Index

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Great Plains Manufacturing, Inc. Cover Index iii

Read All Manuals..........................................................1

Related Manuals, Some for Options.......................1

Enhanced Vigilance Required ........................................1

Missing Manual Hazard..................................................1

Anhydrous Ammonia Education .....................................2

Trained, Informed Personnel Only..............................2

Study All Decals .........................................................2

Be Aware of Signal Words .............................................3

Definitions................................................................... 3

Prepare for Emergencies ...............................................3

Anhydrous Ammonia Information ..............................4

NH3 Icons and Decals ....................................................4

NFPA 704 3-1-0 hazmat diamond: ......................... 4

DOT UN 1005 Class 2.2 hazmat placard: ..............4

ANHYDROUS AMMONIA

INHALATION HAZARD: .....................................4

General NH3 Information................................................4

NH3 Concentrations (Parts Per Million) .................. 4

Why Anhydrous Ammonia (NH3) Differs….....................5

Personal Safety with Ammonia ......................................6

Ammonia Emergency Action .......................................... 7

Ammonia Nurse Tanks ................................................8

Nurse Tank Security.......................................................8

Nurse Tank Safety...................................................... 9

Nurse Tank Cart Components......................................10

Cart Hitch .................................................................10

Nurse Tank Front End ..............................................11

A59. Outlet Hose Configurations .......................... 12

Nurse Tank Forward Fittings ....................................14

Nurse Tank Sides and Mid-Section..........................19

Missing Nameplate? ............................................. 19

Nurse Tank Rear End............................................... 22

Nurse Tank Acceptance ...............................................23

Anhydrous Application..............................................25

NH3 Temperature and Pressure Relationship ...... 25

Get Expert Advice ........................................................25

Weather Extremes........................................................25

Cold Weather Low Flow ........................................... 25

Hot Weather Venting................................................ 25

Avoid Dead Calm ..................................................... 25

Wash Water ................................................................. 26

Field Operation Safety ................................................. 26

Dry Run .................................................................... 27

Row Implement Adjustments ....................................... 27

Sealer Adjustment.................................................... 27

Start of Pass Planning.............................................. 27

Starting Application .................................................. 28

Field Turns ............................................................... 28

Stopping Application ................................................ 29

Suspending Application............................................ 30

Unhitching Nurse Tank ................................................ 31

Final Nurse Tank Unhitch......................................... 31

Exchanging Nurse Tanks ......................................... 31

Folding and Unfolding .................................................. 31

General Safety Rules ............................................... 32

Breakaway Event ..................................................... 33

Ammonia Maintenance Safety .................................. 35

Incompatible Materials .........................................35

Incompatible Cleaners ......................................... 35

Use a Mirror ................................................................. 36

About Bleed Valves:..................................................... 36

Avoid Trapped Anhydrous ........................................... 37

Avoid Line Traps ...................................................... 37

Clearing a Line Trap............................................. 37

Avoid Ball Traps ....................................................... 38

System Discharge........................................................ 39

Normal Discharge .................................................... 39

Hydrostatic Relief Valve Maintenance ......................... 40

Relief Valve Inspection............................................. 40

Valve Replacement .................................................. 41

Appendix..................................................................... 42

Single-Cooler NH3 Plumbing.................................... 42

Index............................................................................ 43

Great Plains Manufacturing, Inc. provides this publication “as is” without warranty of any kind, either expressed or implied. While every precaution has been taken in the preparation of this manual, Great Plains Manufacturing, Inc. assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained herein. Great Plains Manufacturing, Inc. reserves the right to revise and improve its products as it sees fit. This publication describes the state of this product at the time of its publication, and may not reflect the product in the future.

2013-07-15 Cover Index 407-551M

Trademarks of Great Plains Manufacturing, Inc. include: Singulator Plus, Swath Command, Terra-Tine.

Registered Trademarks of Great Plains Manufacturing, Inc. include:

Air-Pro, Clear-Shot, Discovator, Great Plains, Land Pride, MeterCone, Nutri-Pro, Seed-Lok, Solid Stand,

Terra-Guard, Turbo-Chisel, Turbo-Chopper, Turbo Max, Turbo-Till, Ultra-Till, Ver ti-Till, Whirlﬁlter, Yield-Pro.

Brand and Product Names that appear and are owned by others are trademarks of their respective owners.

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iv NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

407-551M Table of Contents Index 2013-07-15

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Great Plains Manufacturing, Inc. Table of Contents Index 1

Read All Manuals

This Using Anhydrous Ammonia Safely manual is a companion manual, supplied with the Operator manual for your Great Plains anhydrous applicator.

There are additional manuals covering the metering system, breakaway coupler, ﬂow divider, controller console, and other system components.

This manual, the applicator Operator manual, the meter manual and the breakaway coupler manual are required reading for safe operations. If you do not have the current edition of all manuals, contact Great Plains for replacement copies.

The present manual (407-551M) covers:

• General anhydrous ammonia information.

• Safety information speciﬁc to anhydrous ammonia.

• Using anhydrous nurse tanks safely.

• Nurse tank acceptance checklist.

Enhanced Vigilance Required

Although a common, useful, and still economical agricultural fertilizer - liquid or gaseous anhydrous ammonia (NH3) is an extremely hazardous substance (an EPA EHS hazmat).

Related Manuals, Some for Options

407-502M Nutri-Pro® NP30A Operator

407-313P Nutri-Pro® NP30A Parts

407-502M Nutri-Pro® NP40A Operator

407-313P Nutri-Pro® NP40A Parts

407-613M Nutri-Pro® NP3000A Operator

407-613P Nutri-Pro® NP3000A Parts

417-199M Nutri-Pro® NP4000A Operator

417-199P Nutri-Pro® NP4000A Parts

12-M-29 CDS-John Blue IP-1300/1800

Impellicone® parts

016-0159-403 Raven AccuFlow™ Operator manual

016-0159-831 Raven SCS-450 Installation, Operation

and Service manual

FVC062 Squibb-Taylor Flo-Max™ manual

016-0159-831 Raven SCS-450 Installation, Operation

and Service manual

EPA EHS (Extremely Hazardous Substance):

Despite the common odor, anhydrous ammonia properties are dramatically different from those of household ammonia cleaning solutions (dilute ammonium hydroxide, NH4OH). An uncontrolled release of NH3 can easily be fatal or cause permanent disabling injury.

If you are new to NH3 operations, study everything you can about this chemical and how to use it safely.

Missing Manual Hazard

The nurse tank(s) you own or are leasing may not have current manuals. If so, the nurse tank topics in this manual need your attention. These pages cannot be a substitute for a complete and current nurse tank cart manual, but they cover important information for using nurse tanks safely.

Suffocation, Blinding, Burning, Freezing, Disabling and Disﬁgurement Hazards:

Your life and health, the lives and health of your workers and community, the continued commercial availability of anhydrous ammonia, and continuation of agricultural NH3 transport exceptions depend on you conducting meticulously careful operations.

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2NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Anhydrous Ammonia Education

▲ Read this safety information. It may contain important

information not found in your other reference materials.

▲ Have anyone operating or merely working near the

implement read this safety information.

▲ Do not read only this safety information.

▲ A 20-minute video is no substitute for real anhydrous

ammonia safety training.

Trained, Informed Personnel Only

Anyone working with or near anhydrous ammonia equipment must be fully trained on NH3 safety, know exact procedures, know regulations, study all safety information provided for materials and equipment, and must be provisioned with adequate personal safety equipment.

This training may be required by law in your locale.

This manual covers important information, but is not a substitute for training.

If some terms in this manual are unfamiliar, do not work with NH3 until they are.

If any topic at right is unfamiliar, assume that the topic applies to your operations, and your personal safety, unless you have researched it and ruled it out.

• This manual is not a substitute for the MSDS and other safety documents provided with the NH3 itself.

• This manual cannot cover all national, regional and local laws and regulations, nor any organizational or liability carrier rules.

• This manual cannot cover operations for all nurse tanks.

• This manual and the Operator manual do not repeat all of the Raven AccuFlow™ or Squibb-Taylor Flo-Max™ manuals.

• This manual does not repeat full details of the industry standards that apply to anhydrous ammonia tanks and operations.

DOT

PHMSA

ANSI K61.1

/CGA G2.1

MSDS ASME

Manual,

NP30A/NP40A

OSHA

NIOSH

Insurer

Policies

Nameplate

Manual,

NH3 Meter

State Law

State Regs

Entity

Policies

Manual,

Nurse Tank

Manual, Coupler

Study All Decals

Anhydrous ammonia implements and tanks display more decals, more detailed decals, and more decals than typical farm equipment.

Have all operators inspect all decals before using the equipment. Make sure all operators understand what hazards the decals identify, what the correct operational procedures are, and what emergency actions to take.

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Great Plains Manufacturing, Inc. Table of Contents Index Read All Manuals 3

Be Aware of Signal Words

Signal words designate a degree or level of hazard seriousness.

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. This signal word is limited to the most extreme situations, typically for machine components that, for functional purposes, cannot be guarded.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury, and includes hazards that are exposed when guards are removed. It may also be used to alert against unsafe practices.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices.

Deﬁnitions

The following additional terms are used throughout this manual.

NOTICE indicates a crucial point of information related to the preceding topic. Read and follow the directions to remain safe, avoid serious damage to equipment and

ensure desired field results.

Note: Useful information related to the preceding topic.

Right-hand and left-hand as used in this manual are determined by facing the direction the machine will travel while in use unless otherwise stated. An orientation rose in some line art illustrations shows the directions of: Up, Back, Left, Down, Front, Right.

A consistent system of callouts is used for most implement and nurse tank cart components. See page 42 for an applicator system illustration.

A11 A11 A49

3-character callouts in the range to refer to Nutri-Pro® NH3 system components (page 42).

A51 A51 A87

3-character callouts in the range to refer to nurse tank cart components (pages 10 to 22).

Prepare for Emergencies

▲ Keep emergency numbers for doctor, ambulance, hospital

and ﬁre department near phone. Know the reporting requirement for spills or releases of the chemicals you are using. Have contact numbers available.

▲ For anhydrous ammonia operations, have additional

contact information for:

• national response center

• regional (state) response center

• local response center

▲ Have a ﬁrst aid kit for typical farm injuries, but ignore it for

anhydrous ammonia exposure. The only ﬁrst aid for anhydrous ammonia is water.

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4NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Anhydrous Ammonia Information

NH3 Icons and Decals

Topics in this manual, and the Operator manual, that concern anhydrous ammonia safety are shown with these icons nearby.

NFPA 704 3-1-0 hazmat diamond:

(see page 5 for details) This information is for emergency responders, and is typically displayed only at ﬁxed anhydrous ammonia facilities (terminals), and not on nurse tanks or implements.

DOT UN 1005 Class 2.2 hazmat placard:

This information is for trained users of the material and emergency responders. This decal identiﬁes:

• Green Color non-ﬂammable (but see “2”)

• Tank Icon content is a gas (at ambient temperature

and atmospheric pressure - in the tank, it may be a liquid)

• 1005 Material Identity:

Anhydrous Ammonia

• 2 Hazmat Class: Division 2.2:

a non-ﬂammable gas that can ignite under some circumstances

ANHYDROUS AMMONIA

INHALATION HAZARD:

This decal is for all users and the general public.

General NH3Information

Fertilizer Type: 82-0-0 Chemical formula: NH CAS number: 7664-41-7 EC NUMBER (EINECS): 231-635-3 EC INDEX NUMBER: 007-001-00-5

NH3 is a colorless gas at room temperature (any clouds observed in releases are usually water or ice condensed from the air by the refrigerant effect of NH3 evaporation).

NH3 is a colorless liquid, and is only a liquid at room temperature if chilled and/or under pressure.

NH3 gas has a distinctive odor that provides warning of dangerous concentrations (unless you have impaired sense of smell, or develop olfactory fatigue/adaptation due to extended low-level exposure).

Safe ﬁeld operations can keep exposures below permissible limits. Unsafe operations, accidents and malfunctions can result in exposures at ANY concentration.

NH3 Concentrations (Parts Per Million)

5 ppm Odor detection threshold (most people)

20-50 ppm Readily detectable odor

25 ppm NIOSH TWA (Time Weighted Average)

exposure limit

35 ppm NIOSH STEL (Short Term Exposure Limit)

50 ppm OSHA PEL (Permissible Exposure Limit,

8 hour TWA)

100 ppm Rapid eye and nose irritation

150-200 ppm General discomfort, eye tearing. No

permanent health effects on short exposure

200 ppm AIHA ERPG-2 one-hour exposure limit

300 ppm OSHA IDLH (Immediately Dangerous to

Life and Health).

400-700 ppm Severe irritation of eyes, ears, nose and

throat.

1700 ppm Coughing, bronchial spasms

20003000 ppm

500010000 ppm

Dangerous: could be fatal in less than 30 minutes

Rapidly fatal - escape may be impossible.

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Great Plains Manufacturing, Inc. Table of Contents Index Anhydrous Ammonia Information 5

Why Anhydrous Ammonia (NH3) Differs…

…from typical liquid fertilizers:

▲ NH3 is intensely hygroscopic:

On contact with water, such as unprotected skin, eyes, mouth, airway and lungs, it dissolves immediately, desiccating the cells and forming ammonium hydroxide.

▲ NH3 is highly caustic:

Ammonium hydroxide formed on contact is a strongly corrosive alkaline solution, resulting in severe chemical burning of skin and mucous membranes.

▲ NH3 is volatile:

NH3boils at -28 °F (-33.4 °C), expanding by over 850 times. It remains liquid in the nurse tank only because it is pressurized at up to 250 psi. Leaks or above-ground releases immediately cause an expanding gas cloud. Tanks begin venting above 116 °F (46.7 °C).

▲ NH3 has a high heat of vaporization:

NH3is a powerful refrigerant. Evaporating (boiling) liquid NH3may be at -100 °F (-73 °C), freezing whatever water it touches (in addition to the other hazards). This can freeze clothing to skin, prolonging tissue damage.

▲ NH3 is combustible:

Although NH3generally does not burn with a self-sustaining ﬂame in the ﬁeld, it is a signiﬁcant ﬁre hazard in closed areas and/or if released near hot ignition sources (such as during welding on implements).

▲ NH3 is reactive:

Although the reactivity is classiﬁed as “0” (in the NFPA 3-1-0 diamond for emergency response purposes), NH3does react with various materials, and can produce hazardous byproducts and/or have hazardous side-effects.

NH3 is corrosive to a surprising number of metals (see page 35). Repairs with incompatible parts are likely to result in malfunctions and a serious accident. Brass parts in particular can fail rapidly, from the inside out.

Mixing NH3with some common household and agricultural chemicals can, for example, produce highly toxic gas. Never mix NH3 with acids.

▲ NH3 is attractive to criminals:

Do not leave a loaded tank unattended. Secure your tank. Clandestine lab operators steal NH3from unattended nurse tanks. Criminals and vandals often leave a tank in an unsafe state.

FROSTBITE

CORROSIVE

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Personal Safety with Ammonia

▲ Carry personal ﬂush water and wear Personal Protective

Equipment (PPE) at all times when working with or near the nurse tank, and when working with an applicator not known to be completely purged. Minimum PPE is:

• Carry a sealed squeeze container with 8-10 ﬂuid ounces (270 ml) of clean water or saline solution.

• Wear non-vented chemical splash goggles speciﬁed for use with anhydrous ammonia. If you wear glasses, make sure the goggles seal completely. A vented full face mask provides extra splash protection, but is not a substitute for primary non-vented eye protection.

• Wear long cuff chemical gloves speciﬁed for use with anhydrous ammonia. Turn back the cuff ends to catch any liquids when arms are raised.

• Wear clothing made of heavy, tightly woven fabric, that can be closed at the neck, and at the cuffs of long shirt sleeves and long pants. Wear boots or high, closed shoes.

• Have a mirror for inspecting ends of ﬁttings, ports and hoses. Never point an NH3 source at your face.

• Great Plains strongly recommends carrying a wireless telephone or 2-way radio.

▲ Do not wear contact lenses when working with/near

anhydrous ammonia, nor with equipment that may contain residual NH damage faster than you can remove contacts for eye washing.

▲ Unfrozen wash water is required. Completely replace water

daily or more often in the 5 gallon (19 liter) tanks on nurse tank cart and on implement. Wash water tanks may be vented to allow the water out at the tap. The vent allows NH3 gas to enter and gradually form an ammonia solution.

▲ Respirator?

Full face piece respirator protection is required for workers at ﬁxed ammonia facilities, but not for ﬁeld operations. Should you choose to use a full face respirator when operating the applicator, be aware of two risk factors:

1. Loss of Warning: Filter cartridges may reduce

ammonia odor, preventing detection of malfunctions or dangerous fume concentrations.

2. Over-Conﬁdence: Typical respirators are intended

for extended low-level exposure, or escape from high levels. They do not provide extended protection at or above IDLHa (300 ppm).

a. A vapor concentration Immediately Dangerous to

Life or Health

liquid/gas. NH3 can cause permanent eye

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Great Plains Manufacturing, Inc. Table of Contents Index Anhydrous Ammonia Information 7

Ammonia Emergency Action

▲ Have a plan. Execute the plan.

Expect the possibility of exposure or uncontrolled release in any phase of setup, transport or operations. Have contact information at hand. Know the wind direction at all times.

▲ Act Quickly:

Training matters. You must know what to do, and act without hesitation.

▲ Move or Turn Up-Wind:

The ﬁrst priority is to avoid exposure, or stop further exposure. On splash or spill, get out of the vapor cloud. Move up-wind.

If a leak is detected while operating in the ﬁeld, turn the tractor into the wind, lower the implement into the ground and perform an emergency ﬂow shut-off. Pull the rope.

If a breakaway occurred, move the tractor some distance upwind from the disconnected nurse tank.

▲ Apply First Aid:

Treat exposures with water ﬂushing (and only water or saline solution, unless instructed otherwise by a physician). Irrigate continuously. Get professional medical help as soon as possible.

Do not stop with one ﬂush. Apply water until a physician takes over or instructs otherwise. In particular, do not use lotions, ointments, salves or creams. They can trap the harmful agents under the skin.

▲ Close Valves Only if Not in Vapor Cloud

Once clear of the cloud, evaluate if it is safe to close any shut-off valves not already closed. DO NOT re-enter vapor cloud. DO NOT attempt leak/spill control other than valve closure. If Raven SCS 450 console is on, set MASTER switch off. Do not turn POWER switch off.

▲ Escape:

Continue moving upwind of any uncontrolled release. The wind may shift. On a calm day the ammonia cloud expands in all directions.

▲ Notify:

Summon any aid required. Notify local authorities of any uncontrolled release. Protect the public. Protect livestock if that can be done without further exposure.

▲ Stay in Contact:

Be available to responders with whatever information they require. Do not attempt to correct the accident problem yourself. Standard ﬁeld PPEa safety equipment is suitable only for normal operations and escape. Field PPEa is not safe for emergency response.

a. PPE: Personal Protective Equipment

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8NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Ammonia Nurse Tanks

Use nurse tanks with proper current safety certiﬁcation, and current safety equipment and features.

Consult with your anhydrous ammonia supplier for safety information and correct safe handling, transport and use of anhydrous ammonia.

Consult with local and regional authorities on Safe and legal use of anhydrous ammonia, including emergency and environmental contacts, and release reporting requirements.

Review any decals and manuals available for your nurse tank cart, and for any of its components. There may be separate manuals for the tank, running gear, indicators, valves and ﬁttings.

This manual covers typical operations for a representative NH3 nurse tank cart. Compare the features and controls of your cart to the model cart, so that there will be no confusion about instruction steps.

Figure 1

Typical NH3 Terminal

31558

Control Variation Hazard:

If you are using multiple nurse tanks, study each one separately. Unless they are owned by you, and known to be identical, there is a high probability that there are differences between them, even if they are all from the same terminal.

Trailing Nurse Tanks Only:

This manual, and the applicator Operator manual, do not cover operations with “applicator” anhydrous tanks.

A consistent system of callouts is used for most nurse tank cart components.

A51 A51 A87

3-character callouts in the range to refer to nurse tank cart components, decribed on page 10 through page 22.

Nurse Tank Security

Standard Tank Controls:

This manual, and the applicator Operator manual, assume standard (unlocked) tank ﬁttings and controls are in use.

Missing Information Hazard:

Take action to inform yourself. The majority of anhydrous ammonia nurse tanks do not have an operator manual, for the complete cart or for just the tank. Any manual that is available may not accurately document the cart at hand, due to expired component replacement, and/or complete tank replacement.

Field Operations Only:

This manual, and the applicator Operator manual, cover only nurse tank ﬁeld operations. Nurse tank terminal operations, transport, storage and detailed maintenance are beyond the scope of this manual.

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Nurse Tanks 9

Nurse Tank Safety

Many nurse tanks in use today were originally assembled by cart integrators who are no longer in that business, or assembled by an implement dealer, or by an end user.

Cart running gear often remains in service for decades, with a periodic tank replacement, at which time it is essentially a completely different nurse tank cart.

Hoses and various ﬁttings are limited-life components that are routinely replaced, and the replacements may not precisely match the original parts.

In as few as four years, any original cart documentation may no longer accurately describe the cart in its current conﬁguration.

If you do not have a current, up-to-date operator manual for the nurse tank cart, study the “Ammonia Nurse

Tanks” section of this manual, starting on page 8.

Example:

Peeling and

Missing

Safety and

Informational

Decals

Missing Information Hazard:

Many nurse tanks have no operator manual. They may not have even a tank operator manual. If there is a manual, the cart may have been modiﬁed, or the tank replaced. Fittings are routinely replaced. Study how the nurse tank works. The tank conﬁguration, ﬁtting, hoses, indicators and controls may vary from the original documentation (if any), and vary from the typical tank described in the section “Ammonia Nurse Tanks” on page 8.

▲ Do not ﬁll, accept or use a tank unless it conforms to

current regulatory and safety requirements, and passes a careful inspection. Print pages 23 and 24 to use as checklists. If the answer to any of the items is “no”, do not use the tank.

▲ Pull-type two-axle tanks only

(no semi-mounted nurse tank carts).

▲ Maximum total capacity 3000 gallons.

▲ Never ﬁll to more than 85% capacity.

▲ Never transport a nurse tank behind an implement on

public roads.

▲ Never park a tank on public roads or in populated areas.

▲ Transport slowly: 20 mph (32 kph) maximum

▲ Never leave a loaded NH3 tank unattended.

Never leave a nurse tank unsecured.

▲ Know and follow the law applicable to anhydrous ammonia

tanks, transfer, transport and application. Some jurisdictions require permits and speciﬁc documents and equipment conﬁguration for highway transport.

▲ Know how to perform a basic safety inspection of a nurse

tank (page 23). Do not ﬁll or accept or ﬁll a tank that fails inspection.

Example:

Illegible

or Missing

Name

Plate

Example: Failing or Outdated

Hose

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10 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Nurse Tank Cart Components

For use with a Nutri-Pro®applicator, the nurse tank must be a full-trailering pull-type with two or more axle running gear. The Nutri-Pro mounted tank.

Note: Callout numbers A51 through A87 identify the

same nurse tank components throughout this manual and the applicator Operator manual.

Cart Hitch

Refer to Figure 2

A51 A Nutri-Pro®applicator requires a nurse tank with a

clevis hitch having a locking 1 inch (2.5 cm) pin. See the applicator Operator manual for cart hitching and page 31 for unhitching.

A52 At least one safety chain is required. In some

regions, regulations may already require two safety chains. Each chain, clasp, and weld must be rated for the gross weight of the loaded cart.

A53 The tongue may have supports or caddies for hose

management (the depicted cart has the Acme parking plug on top). Make sure you understand the purpose of any tongue features.

When the nurse tank hose is attached, check that the forward point at which it is secured to the tongue or cart frame is at least 3 feet (92 cm) from the implement break-away, with enough slack to elevate the hose at least 13 inches (33 cm) above the implement breakaway.

Note: Nutri-Pro

harness at the rear hitch, as ﬁeld operations do not require nurse tank lights. If the nurse tank has lights, make sure there is provision to secure that harness during ﬁeld operations.

Note: A Nutri-Pro®implement does not provide pass-

through connections for air, hydraulic or electric brakes, as ﬁeld operations do not require brakes. If the nurse tank has brakes (rare), make sure they can be set to off (freewheeling), and there is provision to secure the unconnected brake lines during ﬁeld operations.

A54 Nurse tank cart tongues typically have unlimited

vertical movement. If the tongue pivots have stops, make sure the clevis can be elevated to at least 48 inches (122 cm) above ground (for implement lift in ﬁeld turns).

is not designed to pull a semi-

implements do not provide a lighting

A54

A52

A53

A51

Figure 2

Nurse Tank Hitch

31559

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Nurse Tanks 11

Nurse Tank Front End

A cart may have one or two tanks. A two-tank cart often has a separate hookup for each tank. A two-tank, twohose cart may be used with a dual-cooler implement, or a single-meter implement (one tank after another).

Refer to Figure 3

A55 UN1005 decal:

See page 4. This information is for trained users of the material and emergency responders.

A56 25 MPH mirror image decal:

This decal is for the beneﬁt of the operator transporting the cart on public roads. It reads legibly in a rear view mirror.

A57 Acmea parking plug:

An acceptable nurse tank must have a means of securing the outlet end of each hose. This is usually an Acme-threaded plug mounted on the tank or tongue. See the applicator Operator manual for hose hookup and unhitching.

A58

A56

A55

Figure 3

Nurse Tank Front

A59

31559

Vapor Exposure Hazard:

Acme plugs typically do not have gaskets, and do not make a gas-tight seal. Residual liquid or gas in the hose slowly vents at the plug. Use valves to close lines.

Refer to Figure 4

A58 Acme Female Hose Coupler:

On a leased tank, the terminal may supply no hose, in which case you need to provide your own.

This end of the hose connects the tank withdrawal valve to the leading implement inlet at the breakaway coupler. For use with a Nutri-Pro applicator, the outlet end of the hose must be equipped with a 13⁄4-4 female Acme ﬁtting.

The outlet end of the hose has a swivel collarb or shroud containing the female Acme ﬁtting. This allows connection without needing to twist the hose.

Acme hose couplers are intended for hand tightening only. Do not use tools to make the cartimplement connection. A liquid-tight seal is made by the gasket in the male Acme ﬁtting on the implement break-away coupler.

A58

Figure 4

Acme Hose Coupler

Suffocation, Blinding and Burning Hazards:

Never disconnect at an Acme coupler without ﬁrst:

• shutting off the line at all valves, and

• bleeding the line at the connection. Be up-wind for all operations.

31567

a. Acme refers to the ANSI/ASME B1.5-1997 screw thread, which has a coarse trapezoidal thread proﬁle. b. Acme collars may be aluminum, but all internal coupler components must be NH3-safe, typically stainless steel.

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12 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

A59 Outlet Hose:

The hose itself and any crimped or swaged NPT ﬁttings are limited-life components. Check the remove-after date on the hose. Valves and other ﬁttings may also be limited life.

Valves are described on page 13. Hoses may be supplied in any of several valve conﬁgurations. See table at right. Flow turn-on and turn-off sequencing is different for each hose conﬁguration. See “Starting NH

Tank Flow” in the applicator

Operator manual and “Stopping Application” on page 29.

Refer to Figure 6

A60 Nurse Tank Hose Body:

A59. Outlet Hose Conﬁgurations

A59a. No Valves

A61b

A59b. Valve at Outlet End

A61a

A59c. Valve at Inlet End

A63

A59d. Valve at Both Ends

Figure 5

Nurse Tank Hose Conﬁgurations

31567

Hose data is printed on the full length of the hose. The key information for operators is that the hose is designed for “ANHYDROUS AMMONIA” use, and that the replace-by “REMOVE ... BEFORE” date has not yet arrived.

Do not rely exclusively on the expiration date. Inspect the hose for excess wear, damage and other signs of imminent failure. See hose checklist on page 23.

Figure 6

Hose Data Stripe

31535

a. National Pipe Thread (tapered). Never disconnect anhydrous ammonia NPT ﬁttings in routine use.

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Nurse Tanks 13

Refer to Figure 7

A61 Hose Valve(s)

If the nurse tank hose has one or more valves, study how they work.

A61b

Hose valves are typically hand wheel valves (as shown ), or lever valves. Read any documents

A61b

provided for the valves. Have the terminal or dealer explain how the valves work.

A62

Suffocation, Blinding and Burning Hazards:

Never test an anhydrous ammonia hose valve unless you are absolutely certain the hose and valve bodies are empty, or both hose ends are securely connected to sealed systems.

▲ A two-valve hose can contain a substantial amount of

NH3 even when completely disconnected. See “Avoid Line Traps” on page 37.

▲ Older ball valves can contain NH3inside the ball when

closed, even though disconnected at both ends. See “Avoid Ball Traps” on page 38.

Follow instructions for bleeding and checking. Never use a valve handle as a carrying handle. Keep hands clear of bleed valves when carrying a hose.

Refer to Figure 8

A62 Bleed Valve(s):

Hose valves typically have bleed valves. The purpose of a bleed valve is to perform a controlled release, via an oriﬁce , of any ﬂuid or gas

A62a

trapped in the closed line prior to disconnect at a nearby Acme ﬁtting.

A single bleed valve may be located on the inlet or outlet side of the valve, and only protects that side of the circuit when the valve is closed. More rarely, a shut-off valve has bleed valves on both sides of the valve.

Figure 7

Hose Shut-Off and Bleed Valves

A62a

31535

Study the location of all bleed valves on your nurse tank and implement.

Figure 8

31569

Bleed Valve Detail

Suffocation, Blinding and Burning Hazards:

Be up-wind when operating a bleed valve. Wear chemical gloves when operating a bleed valve. Wear goggles when operating a bleed valve. Do not place your body or head in front of the oriﬁce. Follow a check-list when operating a bleed valve. Open a bleed valve slowly.

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14 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Refer to Figure 9 (depicting a hydrostatic relief valve, with a bleed valve for scale)

A63 Hydrostatic Relief Valve:

Hydrostatic relief valves may be found at multiple locations, typically anywhere that NH trapped (such as in a dual-valve hose).

These are usually identiﬁed by a black polymer cap. If the cap is missing, the valve may have been activated at some time.

Hydrostatic relief valves are designed to open at pressures higher than the nurse tank pressure relief

A80

valve (page 18, 250-265 psi). Normal excess pressure vents at the nurse tank pressure relief valve. A release at a hydrostatic relief valve indicates a malfunction or operator error.

Hydrostatic relief valves are usually limited-life components.

could be

A63

Figure 9

Hydrostatic Relief Valve

31564

Nurse Tank Forward Fittings

Refer to Figure 10 and Figure 11

A welded roll cage, normally located at the top front of the tank, contains all the operating and status ﬁttings except the relief valve ( , page 21), and the drain valve

A79

( , page 21).

Decals on the tank or protective structure may identify the valves and ﬁttings. Valves may be color-coded. Make sure all operators know where each valve or ﬁtting is located. Several of the valves have a similar mechanical appearance.

As the tank operator, you will operate one of these ﬁttings (the withdrawal valve ), and periodically check two others (the pressure and ﬂoat gauges).

You need to know the functions of all of the ﬁttings in this group for purposes of tank inspection and acceptance.

A80

A66

A68 A71

}

Figure 10

Nurse Tank Forward Fittings

31560

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Nurse Tanks 15

Refer to Figure 11 (some components shown exploded for clarity - never remove any except the outlet cap).

A64 Outlet:

The inlet end of the nurse tank hose attaches to this ﬁtting, which is located at the withdrawal valve (which itself may not be on the tank top. See page 16).

A66

A65

A66

A67

A70

A64

This may be a male Acme ﬁtting, and if so should have a an Acme cap on it when the hose is disconnected. This Acme ﬁtting may be a different size than the implement 1 only accept one end of the hose.

If the hose connects with an NPT ﬁtting, it is not intended for routine disconnection.

A65 Excess Flow Valve:

This (usually time-dated) ﬁtting may not be present, or may be internal to the withdrawal valve . Its function is to substantially obstruct ﬂow if an unusually high ﬂow is detected, such as a complete shearing of the hose or a major breach in the hose.

⁄4-4 ﬁtting, and if so, will

A66

If present, and correctly speciﬁed for the hose size and maximum application rate, ﬁeld operators do not normally

interact with this ﬁtting.

Ammonia Release Hazard:

Do not approach a breached hose. In the event of a hose breach, an excess ﬂow valve does not completely shut off NH3ﬂow. It reduces ﬂow, which may still be a substantial fraction of a gallon per minute. This ﬂow may or may not be marked by a visible cloud. This ﬂow rate is beyond the

capabilities of ﬁeld PPEb. Summon emergency

responders.

Note: An excess ﬂow valve may also be present at

the liquid ﬁller valve or the vapor

A70

valve .

A67

Figure 11

Nurse Tank Outlet Fittings

31574

a. It is worthwhile to learn if an excess ﬂow valve is installed, how to know if it has engaged, and what the reset procedure is. Also, an

incorrect conﬁguration of undersize I.D. ﬁttings on the outlet side of an excess ﬂow valve could result in the valve failing to operate in the event of a breach. If any reducer bushing or ﬁtting present, reconsider accepting the nurse tank.

b. PPE: Personal Protective Equipment

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16 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Refer to Figure 12 (some components shown exploded for clarity - never remove any except the outlet cap).

A66 Withdrawal Valve:

In ﬁeld operations, this valve is

opened ﬁrst, and closed ﬁrst.

Ammonia Release Hazard:

Never open the withdrawal valve unless: a. all other valves and bleed valves, are closed, or; b. the implement is conﬁgured and ready for use. Always be on the up-wind side for valve operation. Always open slowly. Always check for signs of release when opening this valve.

The withdrawal valve is the application outlet valve. It is usually located on the tank top, but may be located on the bottom. It is color coded red or orange.

The withdrawal valve may have an integrated bleed valve or relief valve. Keep all bleed valves closed except during disconnections. Be aware of relief valves and stay up-wind of them.

A top-mount valve has a “dip tube” which

A66a

collects the liquid NH3. Note that there is no pump. Application ﬂow is driven by: a. vapor pressure of the NH3 gas above, and b. gravity siphoning due to tank elevation.

In cold weather, vapor pressure may be insufﬁcient to support high application rates. See page 25 for further information on cold weather operations.

As there must be a gap between the dip tube inlet opening and the tank bottom, there will be some amount of ammonia that cannot be withdrawn as liquid. This is normal and also provides safety. The residual liquid ensures that the tank contains only NH3, under positive pressure.

A66

NH3 GAS

NH3 LIQUID

A66a

Figure 12

Nurse Tank Withdrawal Valve

31574

Explosion Hazard:

Stop application when the ﬂow meter and cooler pressure gauges indicate that the liquid level in the nurse tank has reached the dip tube inlet. Leave the residual NH3 in the tank. Attempts to apply all of the liquid NH3 could cause air to be introduced to the tank, creating a potentially combustible mixture.

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Nurse Tanks 17

Refer to Figure 13 (some components shown exploded for clarity - never remove any except the outlet cap).

A67 Liquid Filler Valve:

Do not open this valve. Field operators need only conﬁrm: valve closed, in sound mechanical condition, and Acme cap secure.

This valve, color coded red or orange, is used only during tank ﬁll at a terminal.

A68 Pressure Gauge:

This gauge reports the pressure (usually in psi) of the NH3 gas at the top of the tank. The reading varies with tank and ammonia temperature.

A freshly ﬁlled tank reads between 50 and 250 psi (at air temperatures above freezing). Learn the relationship between temperature and vapor pressure. Do not accept a tank with a malfunctioning gauge.

Refer to Figure 14 (some components shown exploded for clarity - never remove any except the outlet cap).

A69 Fixed Liquid Level Gauge:

A67

NH3 GAS

NH3 LIQUID

Figure 13

Filler Valve and Pressure Gauge

Ammonia Release Hazard:

At 120°F (40°C), the vapor pressure reaches 250 psi. Above this point, the relief valve ( on page 21) periodically operates, and small NH3 releases occur.

A68

31574

Do not open this valve. Field operators need only conﬁrm that the valve at this ﬁtting is closed and is in sound mechanical condition.

This gauge is a short dip tube, with its lower end at the 85% ﬁll level in the tank. During ﬁlling, if terminal personnel have any doubt about the reading on the ﬂoat gauge , they may open the ﬁxed gauge and see if what is released is gas or liquid. This is a

hazardous operation requiring terminal PPEa.

A70 Vapor Valve:

Do not open this valve. Field operators need only conﬁrm that this valve is closed, is in sound mechanical condition, and that the Acme cap is secure.

This valve, color coded yellow, is used during ﬁll operations to recapture NH3gas from the top of the tank, as liquid ﬁlls the bottom. It is closed for all other operations.

A vapor return valve may have a [time-dated] excess ﬂow valve.

A71

A69 A70

NH3 GAS

NH3 LIQUID

Figure 14

Fixed Gauge and Vapor Valve

A71

31574

a. PPE: Personal Protective Equipment

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18 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Refer to Figure 15 (some components shown exploded for clarity - never remove any except the outlet cap).

A71 Liquid Level Float Gauge:

Check this gauge when accepting a tank. It needs to be in sound mechanical condition, legible, and reading no higher than 85.

This gauge has a mechanical ﬂoat that is coupled to the indicator needle. Float gauges typically report 0-100 percent of ﬁll.

Float gauges are typically mounted at tank top, facing up, but may also be installed at 45°, with face tilted up, or horizontal, with face to front or side.

On a leased tank, learn the reading to expect when the tank level reaches minimum-usable. It may be an indication above, at, or even below zero.

The gauge reading may be inaccurate if the tank is on a slope, or has just been moved (due to sloshing).

NH3 GAS

NH3 LIQUID

Figure 15

Float Gauge

A71

31574

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Nurse Tanks 19

Nurse Tank Sides and Mid-Section

Refer to Figure 17 (depicting a pre-1988 ASME nameplate)

A72 Tank Nameplate:

A72u

A72p

A72r

Locate and inspect this plate. It may be anywhere on the tank (but will be on the tank, and not on the running gear or tongue). It is often at top center.

Check that the plate is present, and legible. The 1966 vintage plate depicted at right has marginal legibility in places.

Do not accept a nurse tank with an illegible nameplate. Do not accept a nurse tank that is not consistent with the requirements of anhydrous service. See ANSI K61.1/CGA G-2.1 for a complete list of requirements, but some key items to check for are:

A72m

• Manufacturer name

A72r

• Repair stamp - normally blank. An “R” here indicates that the tank has been repaired by an authorized facility. Do not accept a repaired tank without an “R” stamp.

A72s

• Tank serial number

A72p

• MWAP: Maximum Allowable Working Pressure (250 PSIG @ 125°F, is minimum and typical for NH3 service)

A72t

• Type: Must be “AG”

A72u

• Ofﬁcial code “U”-over-”W” symbol. Any other symbol here means the tank is not NH3 service.

A72y

• Year of manufacture. A tank made before 1999 may lack current safety features. Do not use a tank made before July 1961. Do not use an undated tank.

A72s

A72m

A72t

Figure 16

A72y

31562

Anhydrous Tank Nameplate

A post-1988 nameplate will also:

• be fully welded onto the tank (not riveted)

• specify the standard to which it was built, usually ANSI K61.1 or CGA G-2.1

• explicitly specify “for anhydrous ammonia use”

• specify MDMT (Minimum Design Metal Temperature)

Missing Nameplate?

If there is no nameplate, check for evidence of recertiﬁcation within the last ﬁve years, such as FMCSA Cargo Tank (CT) registration number, or paper documentation under DOT SP-13554 or CSA B620.

Refer to Figure 17

A73 Safety Decals:

Study any safety decals. Make sure all operators

A73

A74

understand them, and have learned safety procedures well enough that they know what to do without consulting the decals after an accident.

A74 Instructional Decals:

Study any operating information provided in decal form. If the nurse tank cart has no manual, informational decals may be the only formal documentation available.

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Nurse Tank Operations Decals

Figure 17

31563

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20 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Refer to Figure 18 (simulated contact information)

A75 Owner Contact Information:

Required by transport regulations, on both sides of the tank. On a leased tank, verify that the tank owner’s name, address and phone numbers are present, legible and up to date.

This information may not be present or required on a tank that is operator owned.

A76 UN1005 Decal:

Same as on page 11. Required by transport and hazardous materials regulations, on both sides of the tank.

A77 INHALATION HAZARD Decal:

Required by transport and hazardous materials regulations, on both sides of the tank. This decal is for all users and the general public.

A78 PPE Kit: (not shown)

A Personal Protective Equipment (PPE) kit must be supplied with each nurse tank cart. In some locales, this kit must be in a container afﬁxed to the tank.

The kit must contain at least:

A55

A75

Figure 18

Nurse Tank Center

A76

A77

31560

• chemical gloves

• goggles suitable for anhydrous use

If more than one person will be operating the tank in the ﬁeld, obtain a second kit. See page 6 for more information on required and recommended PPEa.

a. PPE: Personal Protective Equipment

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Nurse Tanks 21

Refer to Figure 19 and Figure 20

A79 Drain Valve:

Inspect this valve (which may be merely a plug ﬁtting). Check for general mechanical condition, and signs of criminal tampering.

Do not open this valve. It is used only to fully drain the tank for major maintenance.

A80 Relief Valve:

Locate this valve. It is on the tank top, usually under a protective structure away from the operating valves. It may be near the wash water tank.

Reﬁlling the wash water tank often places you close to the relief valve. Be up-wind. Check the pressure gauge before reﬁlling the wash tank.

At high tank pressures the relief valve is designed to release NH3until the pressure drops below 250 psi. At 120°F (40°C), the vapor pressure reaches 250 psi. Above this point, the relief valve periodically operates, and small NH3 gas releases occur.

Refer to Figure 20

A81 First Aid Water:

Drain and Relief Valves

Ammonia Release Hazard:

On a hot day, remain up-wind of the relief valve at all times. On a hill, or if the tank is over-ﬁlled, or if the tank tips in an accident, this valve can release liquid NH3.

A79

A80

Figure 19

31574

Check that this tank is present. Check that it was freshly ﬁlled. Check that hose ends are secure.

Ensure that all operators know how the tank works. Where is it? How many hoses does it have? Do not wait until an accident to learn which end of the

A81a

hose is which.

Transport and materials safety regulations require this tank, and the decal that identiﬁes it. The tank may be installed on the top or side of the nurse tank.

The Nutri-Pro® implement also has a wash water tank. See “Ammonia Emergency Action” on page 7 for further information about First Aid Water tanks.

A82 CAUTION AMMONIA Decal:

Required by transport and hazardous materials regulations, on both sides of the tank. This decal is for all users and the general public.

A81b

A81a

A81

A81b

Figure 20

First Aid Wash Water Tank

A80

A82

31560

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22 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Nurse Tank Rear End

Refer to Figure 21

A83 Unit Number:

An emerging regulation requires a visible cart unit identiﬁcation string (letters and/or numbers) on each cart in commercial service.

A84 CAUTION AMMONIA Decal:

Required by transport and hazardous materials regulations, on both sides of the tank. This decal is for all users and the general public.

A85 UN1005 Decal

Same as on page 11. Required by transport and hazardous materials regulations, on both sides, and end of the tank.

A86 SMV Reﬂector:

Required for highway transport of any slow-moving equipment.

A87 Lights: (not shown)

Lights may be required in your jurisdiction. If transporting at night, or in daytime where daytime lights are required, test the lights before departure. Never tow an anhydrous ammonia nurse tank behind an implement on public roads.

A55

A83

A86

A85

Figure 21

Nurse Tank Rear End

A84

31561

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Nurse Tanks 23

YES

Nurse Tank Acceptance

Use this checklist in addition to any checklists provided by the tank manufacturer, tank cart manufacturer and/or anhydrous ammonia supplier.

If no other checklist is available, print these pages to use a checklist when accepting a tank. If another checklist is available, this list may include one or more items omitted from the other lists. Check them all.

Transport the tank separately from the implement.

Consult the towing vehicle and tank operator manuals for hitching the cart to a separate towing vehicle.

Hitch the tank to the implement at the ﬁeld. This topic is covered in the applicator Operator manual.

There are two pages for this checklist.

• Do you know the wind direction?

• Will you have, with you in the ﬁeld, an

❑

operator manual, or manuals, for the cart, tank and all ﬁttings and controls? (if not, see CAUTION on page 8).

• Have the Nutri-Pro®operators studied

❑

the cart manuals?

• Do you have the MSDS for the tank

❑

contents?

• Are UN “1005” placards on at least

❑

both sides and rear of the tank (set)?

• Are “ANHYDROUS AMMONIA”

❑

labels on at least both sides and the rear of the tank (set)?

• Are “INHALATION HAZARD” labels

❑

on both sides of the tank (set)?

• Are all safety and instructional decals

❑

present and legible?

• Does the tank have a fully legible

❑

manufacturer’s name platea stating standards compliance?

• Is the tank compliant with ANSI K61.1-1999 or CGA G-2.1-1999 or later (or other NH3 tank standard

❑

applicable in your jurisdiction)?

• Is the tank ﬁlled to less than 85% full?

• Does the ammonia contain at least

❑

0.2% water?

• Do you have dealerb/supplier contact

❑

information?

Figure 22

Checklists Matter

• Does the tank have a visible

❑

numeric, lettered or other unique identiﬁer?

• Does the cart have a clevis hitch with 1 inch (2.5 cm) pin?

• Does the cart have two safety

❑

chains?

• Does each tank outlet hose have a

❑

male 13⁄4-4 Acme ﬁtting and cap?

• Are the hoses in good condition; free

❑

from cuts, soft spots, bulges,

❑

blistering, kinking, ﬂattening, or indications that the hose is stretched or damaged at the coupling?

• Is there at least 3 ft (92 cm) of free

❑

cart hose from the front clamp/tie, and provision to elevate the slack at

❑

least 13 in (33 cm) above the implement breakaway?

❑

• If the implement is twin-manifold or twin-pump, does the cart have twin hoses (if not twin tanks)?

❑

• Have means to secure both ends of the hose during transit to prevent damage to either hose or connections been installed?

❑

• Does the cart have rollover

❑

protection structures for all vents, valves and gauges?

• Are valves, ﬁttings and gauges rustfree and showing no signs of leaks?

31673

❑

a. If the tank does not have a plate, or was not built to current standards, you may require a special permit for highway transport, such as

DOT SP-13354 in the U.S. and CSA B620 in Canada (tanks under the former “Green Book” program must transition to B620)

b. Regulations in some locales require tank owner information to be displayed on the sides of the tank in letters at least 2 inches high.

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24 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

YES

• Is the hose outlet valve tightly closed?

• Are the tank inlet and outlet valves tightly closed?

• Are the liquid and vapor valves labeled or color coded? (red/orange for liquid and yellow for vapor)

• Does the tank have Acme caps for vapor and liquid valves?

• Are all limited-life components within their dated service lives?

• Does the tank have an operating ﬁxed liquid level ﬂoat gauge?

• Does the tank have an operating pressure gauge.

• Is there a rust-free functional pressure relief valve, with a rain cap?

• Is a clearly labelled ﬁve gallon container of fresh clean water attached to the nurse tank?

• Is one pair of goggles and one pair of rubber gloves provided on the tank?

• Are the tires the correct type and size for the cart, and are they all of identical type and size?

• Do the cart tires have at least

⁄16inch (0.5 mm) tread remaining.

Do all tires have about equal tread wear?

• Are the tires all free of signs of misalignment (uneven tread wear indicating bent axles, failing bearings, etc.)?

• Are the tire sidewalls free of signs of weathering?

❑

• Are the tires inﬂated to speciﬁcation

❑

(not to exceed the maximum

❑

pressure listed on the sidewalls).

• Is the tongue of the trailer straight and in good condition?

• Is the tank paint in good condition? Is

❑

it free of peeling, deep scratches,

❑

bubbles and discolored spots (which might be rust or a leak)?

• Is the tank free of rust and dents, and showing no signs of cracks or leaks?

• If the tank has been unattended and unsecured, is it free of any signs of

❑

tampering?

❑

• Is the cart frame free of deep rust,

❑

cracks, collision damage and other

❑

signs of possible future failure?

• Does the cart appear to be in an up-

❑

to-date state of lubrication?

• Are the tank and plumbing free of

❑

any signs of leaks?

❑

• Does the cart have an SMV (Slow

❑

Moving Vehicle) reﬂector on the

❑

rear?

• Does the cart have any required

❑

trailer license plate or tags?

❑

• Do you have all required permits/

❑

licenses?

• Do you have contact information for

❑

local, regional and national Emergency Response Centers?

• Do you have a mobile means of

❑

summoning emergency aid, such as

❑

a cell phone? Is there adequate wireless coverage along your entire route and in the ﬁeld?

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Great Plains Manufacturing, Inc. Table of Contents Index 25

Anhydrous Application

Get Expert Advice

Anhydrous ammonia is 82% Nitrogen, the highest of any fertilizer. The compound NH3 is normally a gas at ambient temperatures. It is retained in the soil only by chemical reactions and physical mechanisms, primarily reactions with soil moisture.

Consult with your agronomist about optimal application timing, rate and depth, based on proposed crop, soil temperature, soil moisture content and ambient temperature. Non-optimal applications can result in NH loss to the atmosphere, soil drying, and undesired long term changes in soil pH.

Weather Extremes

Cold Weather Low Flow

Catastrophic Release Hazard:

Do not take measures to boost pressure in cold weather. Ad hoc boosting could create risk of line rupture or tank explosion. The Great Plains system is designed for vapor pressure and gravity delivery only.

Vapor pressure changes with ambient temperature (see table at right). In colder weather, there may be insufﬁcient pressure for higher application rates. The Raven AccuFlow™ Installation and Operation manual has a temperature-rate-speed chart.

Hot Weather Venting

Unexpected Release Hazard:

Avoid hot weather, or be extra vigilant about remaining upwind of the tank relief valve ( , page 21). In extremely hot weather, the tank pressure relief valve will periodically vent NH3 when the vapor pressure exceeds 250 psi. Tank temperatures above 116°F (47°C) cause venting.

Direct sun on the tank, or parking the tank in a hot shed, could result in relief venting well below an actual ambient temperature of 116°F.

A80

NH3 Temperature and Pressure Relationship

Degrees F (C) Pressure (psi)

-28°F (-33°C) 0 psi 0°F (-18°C) 16 psi

32°F(0°C) 48 psi

60°F (16°C) 93 psi 100°F (38°C) 197 psi 116°F (47°C) 250 psi

Anhydrous Ammonia Exposure Hazard:

Keep the nurse tank cool. Stay up-wind of relief valves. Check the tank pressure gauge. In hot weather, ammonia vapor releases can occur at a relief valve.

Normally, over-pressure releases occur at the nurse tank relief

A80

valve ( , page 21). It is designed to operate at a lower pressure than other (hydrostatic) relief valves in the system. However, with operating valves closed, trapped NH3 could activate hydrostatic relief valves anywhere in the system.

Avoid Dead Calm

The wind is your friend. Normal anhydrous ammonia operations involve small releases of NH3 vapor. Accidents, malfunctions and serious operator errors can result in releases of liquid NH3, which turns into a rapidly expanding gas cloud. You need to be “up wind” of all potential releases, and that is only possible if there is at least a breeze to carry the fumes away from you.

2013-07-15 Table of Contents Index 407-551M

Lower Operating Limit:

A manifold pressure of at least 10 psi is required for the AccuFlow™ to operate correctly. If the static pressure prior to operation is not much above that, it may fall below this limit when NH3 begins to ﬂow.

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26 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Wash Water

Refer to Figure 23

Empty the 10 gallon implement First Aid Water tank. Reﬁll it with fresh clean water. If the nurse tank cart is at hand, reﬁll the nurse tank wash water as well.

The water needs to be changed daily. Water absorbs ammonia (NH ammonium hydroxide (NH

When emptying wash tanks, use the time and water to train operators on tank operations, and ﬁrst aid rinsing procedures.

) vapor from the air, and becomes an

OH) solution over time.

Figure 23

First Aid Water Station

31599

Field Operation Safety

If ﬁeld requirements permit, you can minimize exposure to NH3 vapor with the following recommendations:

Refer to Figure 24

• Check the wind direction.

• Plan passes to be cross-wind and turns up-wind.

• Plan ﬁrst pass on down-wind side of ﬁeld.

• Choose your ﬁrst pass to allow you to be up-wind while operating valves at the nurse tank and implement. Opening the emergency shut-off valve typically requires climbing on the implement from the right. Starting with the wind from the right is optimal.

Anhydrous Ammonia Exposure Hazard:

If ﬁeld requirements result in any down-wind operations:

▲ Use a tractor with a fully enclosed cab. A tractor that is not

fully enclosed exposes the operator to substantially more NH3 vapor, particularly if ﬁeld requirements result in downwind turns or downwind passes.

▲ Have an escape route (up-wind turn) available for all

down-wind operations.

▲ Conduct end-of-pass operations to minimize above-ground

releases.

▲ Be mindful of the risks of olfactory fatigue. You can

“get used to” the odor and fail to notice when concentrations get dangerously high.

WIND

Figure 24

Ideal Pass Planning

Anhydrous Ammonia Exposure Hazard:

Repeated exposure to NH3 vapor may exceed PEL (Permissible Exposure Limits) and also may induce olfactory fatigue (adaptation). Over time, you become less sensitive to ammonia odor, and may fail to recognize dangerously high concentrations.

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Great Plains Manufacturing, Inc. Table of Contents Index Anhydrous Application 27

Dry Run

Before activating the NH3delivery, cautious practice is to make one dry run pass, including a turn in each direction. This assures that tine or knife depth is set correctly, hydraulics are working correctly, the nurse tank cart is tracking without issue, proper slack exists for all hoses and harnesses, and the meter console is reporting correct ﬁeld speed.

Row Implement Adjustments

Make all applicator adjustments before charging the metering system with anhydrous ammonia:

• application depth

• coulter depth

• sealer adjustments

Sealer Adjustment

Ammonia Exposure Hazard:

Fine tune adjustments with dry runs prior to initial application. Making adjustments after beginning application, even with tines or knives left in the ground, could cause your exposure to exceed PEL, leading to health problems or injury.

If you need to make adjustments after application begins, discharge the system, and then lower the tines or knives into the ground. Minimize your vapor exposure.

Start of Pass Planning

Ideally, you want NH3 to begin ﬂowing out of the tines or knives right at the start of a pass, with the tines or knives already in the ground. This minimizes atmospheric releases.

Depending on wind direction, tractor capability, available headlands, and ﬁeld conditions, there are several ways to start each pass.

A. Capable Tractor:

Lower implement into ground at start of pass. Pull forward to set them to operating depth. Start meter ﬂow. Do not start moving until ﬂow divider pressure gauge nears typical operating value.

B. Headlands Available, Any Tractor:

Lower implement to ground some distance ahead of the application area. Move forward slowly. As tines or knives enter ground, start meter ﬂow.

C. No Headlands, Marginal Tractor:

Lower implement to ground at start of pass. Start forward movement, then meter ﬂow. Move slowly until console rate display nears target rate.

Figure 25

Adjustments

Note: The procedures at left are not operating

instructions or checklists. They are outlines for planning pass starts. See the step details in the applicator Operator manual.

Anhydrous Ammonia Exposure Hazard:

When raising in ﬁeld, be facing into the wind or be turning upwind. Even if NH3 ﬂow was stopped some distance before the lift point, the tines or knives will still be emitting NH3 vapor when out of the ground.

23200,

31593/7

31723

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28 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Starting Application

NH3: Possible Chemical Hazard:

Anhydrous ammonia is now ﬂowing into the ground. Some routinely escapes to the atmosphere. Check for leaks. Take action if strong odor is detected or a leak seen. Turn up wind. Turn off ﬂow. Check gauges from tractor cab. Engage emergency shut-off valve if a leak is detected.

Minor odor during application is normal, particularly if the tractor cab is ever down wind of recent passes.

Strong or irritating odor indicates a problem. Conditions may not be suitable for application (soil too dry, cloddy and deeply cracked, for example), or there may be a system problem.

Figure 26

Typical Application Screen

31585

Field Turns

a. Before the turn,

set the MASTER switch OFF. Leave the implement in the ground, and continue forward movement.

b. Lift the implement at the turn point.

Major Spill / Equipment Damage Hazards:

Do not turn too tightly. The nurse tank could strike the implement, be upset, and leak. On 2-Point and Pull-Type applicators, the nurse tank tongue could strike the caster tires. On 3-Point applicators, the nurse tank tires could strike sealers, tine or knife shanks.

c. Turn up-wind for the next pass.

d. Line up per your start of pass plan.

e. Lower the implement into the ground.

f. Set the BOOMS 1 switch ON.

g. Pull forward and complete the pass.

Ammonia Vapor Release Occurs at Turns:

Avoid down-wind turns. Do not raise for turns if unprotected individuals or sensitive livestock are immediately down-wind of the turn. Stop instead.

Turning off NH3 ﬂow prior to raising for turns does deplete some of the liquid ammonia in the applicator lines, but not all of it, and considerable vapor remains. At turns, there will be some release of NH3vapor, and possibly some NH3liquid. Be prepared for it. Minimize exposure to yourself and others.

Turn up-wind immediately if a hazardous concentration of fumes reaches the tractor cab.

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Great Plains Manufacturing, Inc. Table of Contents Index Anhydrous Application 29

Stopping Application

Plan your stops. A safe stop requires depleting the anhydrous, from the nurse tank withdrawal valve to the tines or knives.

a. What is the wind direction?

b. Suspend application per “Suspending

Application”, below.

c. Put on your chemical gloves.

Be wearing your goggles.

d. Carefully approach the nurse tank from up-wind.

Expect some ammonia odor, but if it is extremely strong, there may be an above-ground release in progress due to malfunction or part failure. If so, remain clear until the release subsides.

e. When safe to do so, shut off the nurse tank

withdrawal valve (page 16).

A66

f. Re-enter the tractor cab.

g. Turn MASTER switch ON.

h. Resume ﬁeld application until reported rate begins to

fall. Increase rate to maximum (to fully open Control Valve).

i. Continue ﬁeld application until both cooler and

divider pressure gauges read zero.

j. Facing into the wind, raise the implement and stop.

k. Set the MASTER switch to OFF.

l. Wait at least 1 minute for row line vapor to dissipate.

m. Turn so that the wind is directly from the right.

Ball Valves: Trapped NH3 Hazard:

Avoid routinely closing ball valves (other than the nurse tank withdrawal valve) with liquid NH3 in the lines. Fluid is trapped in the line above the valve, may trigger relief valves, and can get trapped inside the valve ball unless it has a bleed port (not yet common on nurse tank hoses). See “Avoid Line Traps” on page 37 and “Avoid Ball Traps” on page 38.

A typical ball valve can trap enough NH3 to make a room the size of a two-car garage uninhabitable (concentrations above IDLH in moments). When the ball valve is later opened, while warm, the NH3 is expelled at high pressure. If the line is pointed at your face, you could receive a fatal exposure.

n. Open all bleed valves. Standing up-wind of each,

and making sure oriﬁces point away from you, slowly open bleed valves at:

• nurse tank hose inlet end (page 13)

• nurse tank hose outlet end (page 13)

• breakaway bleed valve or (page 42)

A61a

A13 A16

(whichever is safer)

• cooler temperature gauge (page 42).

A27

o. Close all remaining operating valves:

• nurse tank hose inlet end (page 13)

• nurse tank hose outlet end (page 13)

• emergency shut-off valve (page 42).

A61a

A18

p. Wait at least one hour before moving implement to

any spot near unprotected people or livestock. It will continue to out-gas ammonia vapor for some time.

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30 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Suspending Application

These instructions are for brief stops in the ﬁeld, for example, to make a phone call. See also “Stopping Application” on page 29.

a. What is the wind direction?

b. Turn MASTER switch OFF.

This turns On/Off Valve off.

With On/Off Valve off, there is still a substantial amount of liquid NH3downstream of all valves, in the ﬂow divider, row application tubing, and row applicators. When stopped, in ground, this slowly warms, vaporizes, and is expelled into the soil. See warning at right.

c. Continue ﬁeld application until the Flow Divider

pressure gauge reads zero. Wait at least another 5 minutes.

d. Turn up-wind.

e. Leave the implement in the ground. There is still

considerable NH3 vapor in the lines that are open to the soil. There may also be a modest amount of liquid in cold tubing loops.

Choking Hazard:

Never raise a recently operated implement when you are down-wind of the implement. Be or turn up-wind if it is necessary to raise a working implement. Wear your goggles. A substantial amount of anhydrous ammonia is rapidly released if you do not allow time for it to bleed off underground. The concentration could be high enough to cause irritation, breathing difﬁculty or asphyxiation.

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Great Plains Manufacturing, Inc. Table of Contents Index Anhydrous Application 31

Unhitching Nurse Tank

The procedure is different for exchanging tanks vs. concluding application.

Exchanging Nurse Tanks

Consult with the nurse tank supplier, and all nurse tank documents, before unhitching or exchanging tanks.

a. Suspend NH3 application per “Suspending

Application” on page 30.

The purpose of this step is minimize atmospheric NH

vapor while working at the rear hitch, because

you may not be able to conduct all unhitching and re-hitching steps from up-wind of all the tines or knives.

b. Position the implement cross-wind, with the wind

from the right, tines or knives in ground.

c. Use the rope to close the emergency shut-off

A18

valve (page 42).

d. Put on your goggle and rubber gloves.

e. Shut off the nurse tank withdrawal

A66

valve (page 16). Leave the nurse tank hose valves ( (page 13), if any), open.

f. From up-wind, and with the oriﬁce facing away from

you, slowly open the breakaway coupler inlet bleed valve (page 42).

g. Stand clear and wait for the hoses to discharge.

h. From the up-wind side, unscrew the nurse tank hose

outlet coupler (page 11).

i. Secure the nurse tank outlet coupler.

j. Close all opened bleed valves.

k. Release the nurse tank safety chains.

l. Remove the nurse tank hitch pin.

A61

A13

A58

Control Variation Hazard:

Final Nurse Tank Unhitch

a. Conclude NH3 application per “Stopping

Application” on page 29.

The purpose of this step is minimize atmospheric NH vapor while working at the rear hitch, because you may not be able to conduct all unhitching steps from up-wind of all the tines or knives.

f. From the up-wind side, unscrew the nurse tank hose

outlet coupler (page 11).

g. Secure the outlet coupler with the nurse tank’s Acme

parking plug.

h. Close all opened bleed valves.

i. Release the nurse tank safety chains.

j. Remove the nurse tank hitch pin.

k. Remove nurse tank from behind implement.

A58

Folding and Unfolding

Loop Ammonia Exposure Hazard:

Allow no one down-wind of the implement when folding and unfolding. Applicator tubing loops may contain liquid NH that can drain out of tines or knives during wing movement. This liquid can remain in the loops long after application has ended.

After parking overnight or longer, any liquid present may be highly caustic ammonium hydroxide (concentrated NH4OH, a solution of NH3 and atmospheric moisture) rather than pure NH3. Assume any liquid in loops is extremely hazardous. Take full NH3ﬁeld precautions.

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Figure 27

31617

Applicator Loops

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32 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

General Safety Rules

▲ Keep children, untrained personnel and unprotected

persons well away from equipment that uses anhydrous ammonia. Children may not recognize or correctly react to the smell of ammonia.

▲ Have required documents.

▲ Inspect all equipment carefully prior to operations.

Applicator and nurse tank hardware must meet strict regulatory requirements and be in excellent working order. Components must be within their expiration dates.

▲ Make sure all wash water tanks are full with fresh, clean

unfrozen water. Change water daily.

▲ Perform all required maintenance. Components with

speciﬁc limited service lives must be periodically replaced.

▲ Turn off all hose end and shutoff valves prior to transport.

▲ Check applicator tines or knives. In more challenging

conditions, tines or knives may wear prematurely, causing stops for cleaning and unplugging, increasing low-level exposure to anhydrous ammonia.

▲ Have an extra set of safety equipment in the tractor cab.

Have readily available communications to summon professional aid in case of accident or release.

▲ Park the tank in outdoor shade on hot days and warm sunny

days. Never park near ignition sources. Do not smoke.

▲ On hot days and warm sunny days, do not stand down-wind

of the nurse tank. Even if the air temperature is below 116 °F (46.7 °C), parts of the tank may be above 116 °F, raising the tank pressure to above 250 psig, and causing the relief valve to vent NH

gas until the pressure falls.

▲ Use hitch safety pins. Use safety chains.

▲ Follow operating instructions precisely.

Use checklists. Do not skip steps.

▲ Close valve ﬁrmly, but do not wrench.

▲ Never allow a hose, tube, pipe end or vent opening to point

at your face or body.

▲ Never use control valves as handles for moving hoses or

climbing equipment.

▲ Route the emergency shutoff cord to the tractor cab prior to

ﬁeld operations.

▲ Expect small NH3 releases during connection,

disconnection, when raising the implement out of the ground and after completion of application. Stand up-wind.

▲ Keep the implement down wind of unprotected persons,

livestock and open water after application.

• Have documents required by law, liability carrier rules and entity policy.

• Have MSDS (Material Safety Data Sheet) and supplier documents for the anhydrous ammonia.

• Have any manuals for the nurse tank.

• Have the applicator Operator manual.

• Have the ammonia meter operator manual (such as the 016-0159-403 Raven AccuFlow™ Operator manual).

• Have the coupler operator manual (such as the FVC062 Squibb-Taylor Flo-Max manual).

▲ Do not have unsealed containers of food or drink near the

tank, implement or in the tractor. Any released NH3 will combine with the water in the food or beverage.

▲ Do not move the implement indoors unless completely

discharged of ammonia, or the indoor area has two openings (one up-wind), and reliable cross-ventilation.

▲ Always assume that, once used, NH3residues are present in

implement hoses, tubes and metering system.

▲ Use only CDS-JohnBlue, Great Plains, Raven and

Squibb-Taylor speciﬁed parts to repair implement components originally supplied by Great Plains. Many common plumbing materials are incompatible with NH3. Joint compounds must be speciﬁed as ammonia-resistant.

▲ Never mix anhydrous ammonia with other chemical liquids.

Reactions with many common materials can be violent and/or produce highly toxic by-products.

▲ If a ﬁre threatens an anhydrous ammonia tank, evacuate the

area. The tank may heat up faster than the relief valve can vent the rising pressure, resulting in a catastrophic gas release and possibly an explosion.

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Great Plains Manufacturing, Inc. Table of Contents Index Anhydrous Application 33

Breakaway Event

Initially treat a breakaway coupler separation event as you would any other ﬁeld emergency. Perform the steps at “Ammonia Emergency Action” on page 7. Only then consider performing the steps on this page.

Although the breakaway coupler is designed to separate, such breakaways are not routine events.

Upon a breakaway, what to do about the breakaway coupler itself is the last consideration. Priorities are:

1. Protect: Perform basic ﬁeld emergency action, which may included summoning emergency responders if a major release is in progress, or the nurse tank is tipped over, or is otherwise at risk of a major release.

2. Assess: If the nurse tank appears intact, sound and stable, determine the cause of the breakaway. It is unlikely to be something simple that will allow a timely re-coupling and resumption of application.

If, and only if, the nurse tank is safe to approach, take the next steps to discharge both sides of the breakaway.

Discharge Implement:

3. Perform the steps at “Stopping Application” on page 29. Remain up wind and clear of nurse tank while doing this.

4. With the oriﬁce pointing away from you, and downwind, slowly open the coupler bleed

A16

valve (page 42) at the implement half of the breakaway coupler. If you closed the emergency shutoff after breakaway, each bleed will release liquid NH3, under pressure, most likely as a spray.

Discharge Nurse Tank Hose:

5. Position the tractor and implement near the nurse tank. Stop up-wind of the tank, but slightly crosswind of the tank (so that you are not exposed to residual implement fumes while working around the tank). Face the tractor into the wind.

6. From up-wind, approach the nurse tank.

7. Close the nurse tank withdrawal valve (page 16).

A66

8. From up-wind, approach the nurse tank hose outlet

A58

end (page 11).

9. Locate a bleed valve (page 42) on the nurse

A13

tank half of a coupler. Be careful not to touch or loosen the Acme coupler (page 11). Bleed only

A58

one hose at a time.

10. Position the outlet such that the bleed valve oriﬁce points both away from you AND points down-wind AND can be opened and left pointing that way unattended. If this is not possible, get expert help.

Upon Event: Probable Chemical Hazard:

A 60 cc liquid release to air has already occurred. Assume a major release is also in progress or imminent. Act accordingly. Request assistance from trained experts rather than risk blindness, disﬁguring/disabling injury or death.

A breakaway event is most likely due to a major equipment failure (such as nurse tank running gear fracture), or a gross operator error (such as towing/turning too fast, or departing level ground). These cases can result in an immediate serious spill, or result in a damaged tank at risk of leak at any time.

Even in the case of a basic operator error, such as movement with only the nurse tank hose connected, both implement systems and nurse tank hose at breakaway are fully charged with liquid NH3, right up to the checks in the breakaway halves. The nurse tank side is under full tank pressurization. The implement hose may be under pressure.

This was an unplanned event. Wind direction may not be favorable for discharging and re-coupling. If the wind is light

or calm, do not attempt to bleed the breakaway coupler halves. Your ﬁeld PPEa is not sufﬁcient for the releases

necessary.

a. PPE: Personal Protective Equipment

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34 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

11. Opening this bleed valve WILL release the substantial amount of liquid NH3presently trapped in the hose, slowly, just until some ﬂuid appears. Leave the valve just slightly open.

12. Walk away, up-wind. Stay away until the release concludes. Carefully open bleed valve completely to conﬁrm hose is discharged. For dual-cooler, repeat step 9 through step 12 for the other hose.

most likely as a spray. Open the valve very

Before Re-connection: Elevated Exposure Hazard:

Exercise extreme care. Even if the nurse tank is undamaged, sound and upright, a breakaway event is not a normal re-hitch situation. A substantial NH3 bleed is required that WILL

release a ﬂow of liquid anhydrous ammonia under pressure. If the wind is calm or light, do not attempt to bleed the nurse tank hose. Your ﬁeld PPEa is not sufﬁcient.

13. Close all breakaway bleed valves ( and {page 42}), and any nurse tank hose valves (page 13). Disconnect the nurse

A13 A16

A61

tank half of the breakaway coupler at the Acme coupler (page 11).

A58

14. Correct the cause of breakaway, only if trivial to do in the ﬁeld.

15. Consult the breakaway manual for re-coupling instructions.

a. PPE: Personal Protective Equipment

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Great Plains Manufacturing, Inc. Table of Contents Index 35

Ammonia Maintenance Safety

Over half of NH3accidents result from equipment failure. These accidents can be prevented with responsible stewardship and maintenance.

With most agricultural equipment, using substandard parts or deferring maintenance until a part fails, merely costs needless lost time and money.

With NH

using unapproved parts, deferring maintenance, or operating components past end-of-life,

could cost lives.

equipment,

Suffocation, Blinding, Burning, Freezing, Disabling and Disﬁgurement Hazards:

Do not perform maintenance with anhydrous ammonia in the system. Fully discharge the system of NH3 liquid and vapor before working on the implement. See page 39.

▲ Use only equipment that conforms to applicable

regulations, safety standards and manufacturer recommendations.

▲ Inspect equipment carefully and thoroughly prior to every

use.

▲ Discharge implement of NH3 residues before performing

maintenance. Assume any liquid in tubing loops is extremely hazardous. If not pure NH3, it is likely to be highly concentrated ammonium hydroxide (NH4OH).

▲ Maintain equipment as instructed:

Follow all safety guidelines. Use only approved replacement components.

▲ Replace components as they reach their dated life spans.

Incompatible Cleaners

▲ Unless the implement is free of all ammonia residues, avoid

cleaning the implement with products containing halogen compounds (most commonly chlorine, such as bleach) or strong oxidizers (such as any “oxi…” products. NH3 can react violently with oxidizers and halogens, and can produce toxic gases and/or explosive compounds.

Trapped Anhydrous Hazard:

Never service ﬁttings without certain knowledge that the lines and valves are fully discharged.

Implement systems can trap liquid NH3between closed valves, and inside closed valves (even when the lines on both sides of the valve are discharged). This NH3 would then be released, under pressure, when a fitting is cracked, or a valve opened, days, weeks, or months after last field operations.

If an unvented ball valve had been closed on a full line, that liquid would be released under pressure and vaporize in seconds. It can contain enough liquid NH3 to render a space the size of a two-car garage uninhabitable (NH3concentration at IDLH within moments).

If either end of the valve is pointed at or near your face, local concentration would dramatically higher. The outcome could be blinding, disfiguring, disabling or fatal.

Incompatible Materials

NH3is corrosive to:

aluminum (non-anodized) brass bronze cadmium calcium cast iron copper gold lithium magnesium mercury silver zinc alloys containing these metals, as well as

galvanized surfaces. Repairs with incompatible parts are likely to soon result in malfunctions and a serious accident. Brass parts can fail rapidly, from the inside out. Compounds formed with other metals may be unstable or even explosive.

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36 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Use a Mirror

Refer to Figure 27

Blinding, Choking and Respiratory Hazard:

Never look directly into an ammonia hose or ﬁtting. Use a mirror. Always assume that ammonia is present in the system. There are many ways it can hide, and surprise you later. See “Avoid Trapped Anhydrous” on page 37.

Use a hand mirror to inspect hose ends, piping ends, gaskets, vents and oriﬁces.

About Bleed Valves:

Assume there is concentrated NH3 at any bleed valve, unless you are completely certain which segment of a line is serviced by that bleed valve, and that the line segment has been open to the atmosphere for some time.

When installed on operating valves, it is not always immediately obvious what the bleed valve protects. On globe valves, a bleed valve near center-line might be for venting upstream or downstream. On older ball valves, a bleed valve near center-line might be for either side, or even venting the ball cavity itself.

Refer to Figure 28

The purpose of a bleed valve is to perform a controlled release, via an oriﬁce , of any ﬂuid or gas trapped in a closed line prior to operating other valves or uncapping at a nearby Acme ﬁtting.

If the line is discharged, opening the valve may have no result, or may release a small amount of NH3 vapor at low pressure. Leave the valve open at the current position. Move away up-wind. Return when the release concludes.

If the line is not discharged, opening a bleed valve may release NH3 vapor at high pressure, or NH3 liquid, most likely as a spray.

If the there is liquid in the line segment, completion of a bleed can take a long time. As the ﬂuid turns to vapor, it chills the remaining ﬂuid, slowing evaporation.

Figure 27

Inspecting Fitting With Mirror

Suffocation, Blinding and Burning Hazards:

Figure 28

Coupler Bleed Valve Detail

31565

31569

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Maintenance Safety 37

Avoid Trapped Anhydrous

Before servicing anhydrous equipment, or storing it near untrained individuals, be absolutely certain that there is no liquid NH present (or only trace amounts).

Follow bleeding and discharge instructions carefully. Beware of places in the systems where NH trapped.

Avoid Line Traps

Refer to Figure 30

Any two line valves in the system, if both closed with NH present, can trap that ammonia indeﬁnitely. Line valves include:

tank withdrawal (page 16), nurse tank hose valve (page 13), check valves at a disconnected breakaway, emergency shut-off valve, control valve at rate zero (page 42), On/Off solenoid valve, and aftermarket section valves.

In a properly designed system, segments not open to the atmosphere are protected by hydrostatic relief valves, but the operation of such valves only releases a small portion of the trapped ammonia.

Normal shut-down instructions, after closing the tank withdrawal valve, are intended to bleed most of the system NH3 into the soil. However, there can still be substantial vapor in the system after that. And if shutdown procedures were not followed (or the state of the equipment is unknown at time of servicing), you need to assume that a closed valve represents a risk of trapped NH3.

The illustration at right depicts a nurse tank

A59

hose (page 12) in use, and shut-off while still full of liquid NH3. If this hose is removed to an enclosed space, then opened, it represents an extreme hazard. Vapor concentrations could rise to well above IDLH levels in moments.

This example system line segment is equipped with relief oriﬁce-equipped ball valves (page 13), but that only bleeds the downstream side of a valve ball, the outlet valve in this example. See page 38 for information about ball traps.

The downstream side of this system line segment is equipped with a bleed valve (page 13). The upstream side of the inlet valve is equipped with a hydrostatic relief valve (page 14).

If this line segment warms, pressure can rise high enough to cause periodic releases at the relief valve. This protects the segment from rupture, but does not clear the line.

trapped in the system, and no NH3vapor

can be

A66

A61

A30

A61

A62

A63

A61

Valves Open in Use

Valves Closed with

NH3 Present

A62

Figure 29

NH3 Trapped in Line

Clearing a Line Trap

To clear a line segment with possible trapped NH3:

▲ Move the equipment outdoors.

▲ If calm, wait for wind.

▲ Stand up-wind of the bleed valve.

▲ Point the bleed valve oriﬁce down-wind and away from all

personnel.

▲ If it’s a hose bleed valve, make sure you can set the hose

down with the valve still pointing in a safe direction.

▲ Open the valve very slowly. Once any discharge is

observed, (set any hose down) depart up-wind.

▲ Remain up-wind until the discharge completes.

A61

A63

31616

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38 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Avoid Ball Traps

IDLH Anhydrous Ammonia Exposure Hazard:

Beware of closed ball valves. A ball valve can trap liquid NH If opened when disconnected, this liquid is likely at extreme pressures, is emitted forcefully and vaporizes rapidly. A13⁄4in ball valve can trap enough NH3 to reach IDLH vapor concentrations, within moments, in a space the size of a two car garage. Anyone present could be burned, blinded, or receive serious or permanent lung injury. If this happens in an enclosed space, the consequences could be fatal.

Refer to Figure 30

Always assume a closed ball valve contains liquid NH under high pressure.

The ﬂow gate of a traditional ball valve is a solid steel ball with a hole through it. When closed, the hole cavity is sealed by the side walls of the valve body.

If closed with the line full, the ball cavity is full of NH3. If the valve is well constructed, that ﬂuid remains there indeﬁnitely, presenting future ﬁeld and service hazards.

Note: If the valve has a bleed valve and/or relief valve,

those safety valves do not vent the ball cavity when a solid ball valve is closed. One of them may vent just the downstream side of an oriﬁce ball with the ball closed.

The emergency shut-off valve (page 42) supplied on

A18

Great Plains implements in October 2010 and later has a relief oriﬁce on the downstream (strainer) side of the valve.

Nurse tank hoses are likely to have solid ball valves indeﬁnitely. Treat all ball valves as potential traps.

▲ Wear your PPEa when servicing lines and ﬁttings that are

in an uncertain status.

▲ Fully bleed all lines prior to servicing.

▲ Never carry a valve by the operating wheel or handle.

▲ Open ball valves when both sides of their lines are bled.

▲ Re-check the bleed on at least one side of the opened valve.

▲ If closing a ball valve for storage or parking, ﬁrst wait for

the valve to warm to ambient temperature to ensure that no liquid NH3 remains.

▲ Never point a hose at your face.

Legacy Solid

Ball Valve

Newer Oriﬁce

Ball Valve

Valve Open in Use

Valve Closed with

NH3 Present

Lines Bled on Both

Sides of Valve

Valve Removed for

Service Still Closed

Figure 30

31614

Legacy Valve Ball Trap

▲ Treat all closed valves as possible traps.

▲ Never open a closed valve in an enclosed area.

▲ Never point a closed valve at your face.

▲ If replacing a ball valve, don’t just check that the new valve

is speciﬁed for NH3 service:

Replace oriﬁce ball valves only with oriﬁce ball valves.

Replace solid ball valves with oriﬁce ball valves.

▲ Install an oriﬁce ball valve correctly. The oriﬁce side points

down-stream (in the direction of ﬂow).

a. PPE: Personal Protective Equipment

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Maintenance Safety 39

System Discharge

These steps are for clearing an implement for service or for storage near untrained persons. These instructions presume that you have followed the steps at: “Stopping Application” on page 29, and the nurse tank is unhitched, per: “Final Nurse Tank Unhitch” on page 31.

For a breakaway event, follow the instructions on page 33 up through breakaway re-connection. Then perform a normal shutdown (other than nurse tank steps), per page 29.

The challenges in system discharge are:

•NH3 liquid can remain in the system after the recommended stopping procedures.

•NH3 liquid self-cools as it evaporates, slowing evaporation. It can take a long time for all of it to turn to vapor, particularly in cooler weather.

• Once there is only vapor in the system, there is usually little gas movement to drive the rest of it out.

• The applicator tubing loops are usually the last to clear, and may not fully clear. See sidebar.

Even if no ammonium hydroxide forms, the NH3vapor in the system dilutes slowly with air. Harmless trace amounts, noticed as occasional odor, may remain indeﬁnitely.

Suffocation, Blinding, Burning, Freezing, Disabling and Disﬁgurement Hazards:

Do not perform maintenance with anhydrous ammonia in the system. Fully discharge the system of NH3 liquid and vapor before working on the implement.

The applicator tubes are open to the atmosphere at the tines or knives. When they don’t clear immediately, they are likely to absorb atmospheric moisture, forming ammonium hydroxide (NH4OH) in the tubes. This liquid is highly caustic, and can persist for weeks or months, but remains liquid at ambient temperatures, is harmless to the tubing, and emits ammonia vapor slowly. If there is liquid in the tubes, and it is not cold, it is likely to be an NH4OH solution, and not pure NH3.

Normal Discharge

At the completion of stopping application and nurse tank unhitching, all line valves are closed and all bleed valves are open, and have been that way for at least an hour. Transport may also have occurred, which aids clearing.

1. Verify that all line valves are closed, and all bleed

valves open. If this is not the case, there is risk of trapped ammonia. See “Clearing a Line Trap” on page 37.

2. Carefully walk down-wind of the implement. Check

for ammonia odor. If pungent, there is at least some pure NH3 vapor in the system, and possibly some liquid. Give the implement some time to vent.

If there is no, or only mild odor, check the applicator loops for visible ﬂuid. If only a few hours have elapsed since application ended, this liquid is pure

NH3. Stay away until it has vaporized.

3. From up-wind, check all the ﬁttings and lines. If any

are cold (more than a few degrees below ambient temperature), liquid evaporation is still in progress or has only recently completed. Give the implement more time to vent.

Steps continue on next page...

Figure 31

Applicator Loops

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40 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Hydrostatic Relief Valve Maintenance

Relief valves require scheduled replacement and periodic inspection.

Relief Valve Inspection

Inspect relief valves seasonally, and during periodic maintenance. Check for cap present (step 2) prior to each application from a fresh tank of anhydrous.

1. Bleed the line at a relief valve before a detailed inspection. See “System Discharge” on page 39.

Refer to Figure 32 (depicting cooler relief valve)

2. Check that the rain/dust cap is in place and fully seated.

Do not operate with a missing cap. The cap keeps the spring mechanism, outlet (vent port) and weep

holes free of contaminants that could prevent valve operation in an over-pressure situation.

A missing or dislodged cap also indicates that the valve may have operated, or may be malfunctioning. Understand and correct the reason for a dislodged cap prior to ﬁeld operations.

Replacement caps are:

breakaway: Continental 400-DC cooler: Squibb-Taylor 1325-8.

Ammonia Exposure Hazards:

▲ Wear safety equipment when inspecting or performing

maintenance on relief valves. Even if the line is bled, NH

liquid or vapor may still be present.

▲ Always bleed the system before removing a relief valve cap

or performing any more detailed inspection or valve maintenance.

▲ Never stand in front of or look directly into a relief valve.

Use a mirror. If an overpressure event or valve malfunction is imminent or in progress, you can expect multiple valve activations. The initial activation can blow debris as well as liquid ammonia into your face.

▲ Follow inspection and replacement instructions carefully.

Use the instructions on these two pages only if no separate instructions were supplied with the original and/or replacement valve.

Ammonia Exposure and Loss Hazards:

Understand and correct the reason for any lifted or missing hydrostatic relief valve caps. If a cap is out of place, that line section may have been closed with liquid NH3 present, which later partially vented, dislodging the cap.

Liquid NH3 may still be present. Carefully bleed the line

section before taking any other action.

It is also possible that the valve disc has deteriorated, or has debris under the seat and is venting or leaking at normal operating pressures.

Any hydrostatic relief valve that fully opens (“pops”) must be removed and re-tested (or simply replaced).

3. Carefully remove the dust cap.

4. Check the replace-by date stamped on the valve.

If it has passed, replace the valve before next use.

5. Clean any clogged weep holes . If they cannot be

cleaned, replace the valve.

Figure 32

Uncapped Relief Valve

A23

Note: In severe conditions (such as exposure to salt,

corrosive chemicals or pollutants), or if a valve has fully opened, you may need to replace a hydrostatic relief valve sooner than 5 years.

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Great Plains Manufacturing, Inc. Table of Contents Index Ammonia Maintenance Safety 41

6. Inspect for dirt, sand, grease, paint, damage, corrosion, signs of tampering or insect activity. If visible, check the metal surface of the spring.

If debris cannot be easily cleared, replace the valve. If there are signs of damage, replace the valve. If there is any question, replace the valve.

7. If a valve is venting at normal operating pressures, replace the valve.

8. Never force a valve closed. If a valve has remained open after operating, or is leaking, it is seriously contaminated or failed. Replace the valve.

9. Never attempt to protect a valve oriﬁce with grease. Grease can harden over time, and/or collect contaminants. Either factor could prevent valve operation in an overpressure situation.

Never plug a relief valve outlet. Relief valves are economical defense against serious ruptures and major releases. Help a valve do its job of protecting you.

Valve Replacement

The safest source for a replacement valve is Great Plains. Check the latest edition of the Parts manual (page 1) or the Great Plains internet parts lookup. This assures a correct and compatible part that reﬂects any engineering enhancements.

Ammonia Exposure Hazard:

Fully discharge the system (page 39) before removing an old valve. Wear protective equipment. If the implement was recently used, or ammonia was trapped, there could still be NH3 liquid or vapor behind the valve.

Do not attempt to repair or adjust a relief valve. Hydrostatic relief valves are factory-set and tested, on specialized equipment, to discharge at a speciﬁc pressure.

On the component being protected by the valve, inspect the threaded hole after removing the valve. If there are signs of corrosion, replace the entire component.

Use pipe sealant when installing a replacement valve. Use only pipe sealant speciﬁed for use with anhydrous ammonia, such as RectorSeal No. 5. Do not use tape.

Record the replace-by date of the new valve in the “Replacement Log” section of the applicator Operator manual.

Ammonia Exposure and Rupture Hazards:

Always replace a relief valve with a valve:

▲ that is an external “hydrostatic relief valve”,

▲ that is speciﬁed for anhydrous ammonia service,

▲ that has the same NPT pipe thread size, and;

▲ that is rated for the same discharge pressure as the valve

removed (or as otherwise speciﬁed by Great Plains or the manufacturer of the protected component).

Discharge pressure is speciﬁc to the valve location in the system.

Using a valve rated too high could result in bursting of system components and a major liquid NH3 release.

Using a valve rated too low could result in unexpected liquid NH3 release, and material loss during application.

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42 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

Appendix

Single-Cooler NH3 Plumbing

See applicator Operator manual for legends, dual-cooler and section control diagrams.

A16

A15

A18

A17

A20

A13

A14

A19

A27

A12

A21

A22

A34

A28

A11

A23

A47

A48

A47

A24

A40

A33

A45

A42

A44

A49

A25

A29

A41

A43

A45

A32

A31

A26

Figure 33

Plumbing - Single Cooler Single Section System

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A46

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Great Plains Manufacturing, Inc. Table of Contents Index 43

Index

accident .............................................. 7

AccuFlow™ ...................................... 25

acids ................................................... 5

Acme .... 10

AG .................................................... 19

AIHA ................................................... 4

air, in tank .........................................16

alkaline ............................................... 5

aluminum ................................ 11

ammonium hydroxide .1

anhydrous ammonia .......................... 1

ANSI ................................................. 19

ANSI K61.1 ...................................... 19

ANSI K61.1-1999 ............................. 23

applicator tank .................................... 8

ASME ............................................... 19

, 11, 13, 15, 17, 36

, 35

, 5, 35, 39

ball trap ................................... 29, 38

ball valve .......................................... 35

black cap .......................................... 14

bleach .............................................. 35

bleed valve .............................. 16

hose ........................................... 13

brakes .............................................. 10

brass ......................................... 5

breakaway ............................... 33

bronze .............................................. 35

bushing, reducer .............................. 15

B620 ................................................. 19

, 36

, 35 , 39

cadmium .......................................... 35

calcium ............................................. 35

callout .......................................... 3

Canada ............................................ 23

cap, black ......................................... 14

cap, missing ..................................... 40

cap, valve .........................................40

Cargo Tank (CT) .............................. 19

carry (hose) ...................................... 13

cart, nurse tank .................................. 8

CAS number ...................................... 4

cast iron ........................................... 35

CAUTION, deﬁned ............................. 3

CDS-John Blue .................................. 1

CDS-JohnBlue ................................. 32

CGA ................................................. 19

CGA G-2.1 ....................................... 19

CGA G-2.1-1999 .............................. 23

chain, safety ..................................... 10

checklists

NH3 tank acceptance ................. 23

chemical burning ................................ 5

children ............................................ 32

chlorine ............................................ 35

Class 2.2 ............................................ 4

clevis hitch ....................................... 10

clothing ........................................ 5

, 8

, 6

color code ................................16

color-code ........................................ 14

combustible ................................5

commercial availability ....................... 1

contact lens ....................................... 6

Continental ...................................... 40

copper .............................................. 35

corrosive ............................................ 5

cream ................................................. 7

criminal .............................................. 5

CSA ................................................. 19

CSA B620 ........................................ 23

CT .................................................... 19

, 17

, 16

DANGER, deﬁned .............................. 3

date ............... 12

decal .................................................. 2

decals ................................................ 9

tank ............................................ 19

decal, mirror image .......................... 11

deferring maintenance ..................... 35

deﬁnitions .......................................... 3

detection threshold ............................ 4

diamond .......................................4

dip tube ....................................16

directions ........................................... 3

discharge ......................................... 39

documents ....................................... 32

DOT ..................................4

down-wind ....................................... 26

drain valve ....................................... 21

dry run ............................................. 27

dual tanks ........................................ 11

dual-cooler ....................................... 11

, 15, 17, 19, 40

, 5

, 17

, 19, 23

EC INDEX .......................................... 4

EC NUMBER ..................................... 4

education ........................................... 2

EHS ................................................... 1

EINECS ............................................. 4

emergency ......................................... 7

emergency response ......................... 5

enclosed cab ................................... 26

end-of-life ......................................... 35

EPA .................................................... 1

ERPG-2 ............................................. 4

excess ﬂow valve ............................. 15

exchange nurse tank ....................... 31

expiration ......................................... 32

exposure ............................................ 7

ﬁrst aid .........................................3, 7

ﬁrst aid water ...........................21

ﬁxed level gauge .............................. 17

ﬂammable .......................................... 4

ﬂow, stopping ................................... 29

ﬂow, suspending .............................. 30

FMCSA ............................................ 19

, 26

full-trailering ......................................10

FVC062, manual .............................. 32

galvanized ........................................35

gas cloud ............................................ 5

gasket ...............................................11

gauge

level, fixed ..................................17

level, float ................................... 18

pressure, tank ............................. 17

gloves ................................................. 6

goggles ...............................................6

gold ..................................................35

grease in valve .................................41

green ..................................................4

G-2.1 ................................................ 19

halogen ............................................35

hand wheel ....................................... 13

hazardous material .............................1

hazmat ...............................................1

headlands .........................................27

hose inspection ................................ 12

hose, carrying ...................................13

hydrostatic relief valve .... 14

hygroscopic ........................................5

, 25, 40

IDLH .......................... 4, 6, 29, 35

insect ................................................ 41

IP-1300 ...............................................1

IP-1800 ...............................................1

joint compound .................................32

knives ...............................................32

K61.1 ................................................ 19

left-hand, deﬁned ...............................3

lever valve ........................................13

lighting .............................................. 10

line trap ................................... 29

liquid ﬁller valve ................................17

liquid level ﬂoat gauge ......................18

lithium ...............................................35

livestock ..............................................7

lotion ...................................................7

, 37

magnesium .......................................35

maintenance .....................................35

MDMT ..............................................19

mercury ............................................ 35

mirror .........................................6

mirror image decal ...........................11

missing cap ...................................... 40

MSDS ........................................2

mucous membrane .............................5

, 36

, 32

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44 NH3 Safety Table of Contents Index Great Plains Manufacturing, Inc.

MWAP .............................................. 19

nameplate ................................. 9, 19

NFPA .................................................. 5

NFPA 704 ........................................... 4

NH3 .................................................... 4

NH4OH .............................1

NIOSH ............................................... 4

nitrogen ............................................ 25

Note, deﬁned ..................................... 3

NOTICE, deﬁned ................................ 3

NPT ......................................... 12

nurse tank ................................... 8

nurse tank exchange ........................ 31

nurse tank unhitch ........................... 31

, 26, 39

, 15

, 9

odor .................................................... 4

ointment ............................................. 7

olfactory fatigue ................................ 26

orange .............................................. 16

orientation rose .................................. 3

oriﬁce ............................................... 13

oriﬁce, bleed valve ........................... 36

oriﬁce, relief ............................ 37

OSHA ................................................. 4

oxidizers ........................................... 35

, 38

parking ............................................... 9

parking plug ..................................... 11

pass planning ................................... 27

PEL ........................................... 4

Personal Protective Equipment .......... 6

pH .................................................... 25

placard ............................................... 4

plug, parking .................................... 11

plumbing, single ............................... 42

PPE .................................................... 6

ppm .................................................... 4

pressure gauge ................................ 17

pressure limit, low ............................ 25

pump ................................................ 16

, 27

Raven ............................................... 32

reactive .............................................. 5

red .................................................... 16

reducer bushing ............................... 15

refrigerant .......................................... 5

relief oriﬁce ............................. 37

relief valve ............................... 17

repair stamp ..................................... 19

replacement cap .............................. 40

respirator ............................................ 6

response center ................................. 3

right-hand, deﬁned ............................. 3

rose, orientation ................................. 3

running gear .............................. 9

, 38 , 21

, 10

safety chain ......................................10

safety training .....................................2

salve ...................................................7

SCS 450 .............................................1

SCS-450 .............................................1

semi-mounted ............................9

serial number, tank ...........................19

silver .................................................35

single cooler .....................................42

skin ..............................................5

slack, hose ........................................10

SMV ..................................................22

soil drying .........................................25

SP-13354 .........................................23

SP-13554 .........................................19

Squibb- Taylor ...................................40

Squibb-Taylor ....................................32

stainless steel ...................................11

STEL ..................................................4

stopping application ..........................29

substandard parts .............................35

suspending application .....................30

, 10

, 7

tank temperature ..............................25

tank upset .........................................28

tank, nurse ..........................................8

temperature ......................................17

temperature, tank .............................25

threshold, odor ...................................4

tines ..................................................32

tissue damage ....................................5

toxic gas .............................................5

training ................................................2

trapped .............................................35

tubing loop ........................................35

turns, tight .........................................28

TWA ....................................................4

two-axle ..............................................9

UN 1005 .............................................4

unapproved parts .............................35

unhitch nurse tank ............................31

untrained personnel ..........................32

UN1005 ............................................11

valve

drain ............................................21

excess flow .................................15

filler .............................................17

hose ............................................13

hydrostatic relief ..........................14

relief (tank) ..................................21

vapor ...........................................17

withdrawal ...................................16

valves

bleed ...........................................36

vapor cloud .........................................7

vapor valve ....................................... 17

vent ..................................................32

venting ................................................5

volatile ................................................5

WARNING, deﬁned ............................3

wash water ................................ 6

water tank .........................................26

water, wash ........................................ 6

welding ...............................................5

wind .................................................. 25

wind direction ..................................... 7

withdrawal valve ...............................16

, 21

yellow ............................................... 17

zinc ................................................... 35

Numerics

007-001-00-5, EC index .....................4

016-0159-403, manual .....................32

016-0159-831, manual .......................1

10 psi ................................................25

1005, UN code ................................... 4

12-M-29, manual ................................1

120 F ................................................. 17

1325-8, cap ...................................... 40

1961 ................................................. 19

1966 ................................................. 19

1988 ................................................. 19

1999 ................................................. 19

231-635-3, EC no. .............................. 4

300 ppm ............................................. 6

3-1-0 ................................................... 4

3-1-0 diamond ....................................5

40 C ...................................................17

400-DC, cap .....................................40

407-313P, manual .............................. 1

407-502M, manual ............................. 1

407-613M, manual ............................. 1

407-613P, manual .............................. 1

407-776M, manual ............................. 1

417-199M, manual ............................. 1

417-199P, manual .............................. 1

60 cc .................................................33

7664-41-7, CAS .................................4

82-0-0 ................................................. 4

85% ..................................................17

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Table of Contents Index

Page 50

Table of Contents Index

Great Plains Manufacturing, Inc.

Corporate Ofﬁce: P.O. Box 5060

Salina, Kansas 67402-5060 USA

Great Plains NH3 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Application Supplement

Table of Contents

Read All Manuals

Enhanced Vigilance Required

Missing Manual Hazard

Anhydrous Ammonia Education

Trained, Informed Personnel Only

Study All Decals

Be Aware of Signal Words

Prepare for Emergencies

Anhydrous Ammonia Information

NH3 Icons and Decals

NFPA 704 3-1-0 hazmat diamond:

DOT UN 1005 Class 2.2 hazmat placard:

General NH3Information

NH3 Concentrations (Parts Per Million)

Why Anhydrous Ammonia (NH3) Differs…

Personal Safety with Ammonia

Ammonia Emergency Action

Ammonia Nurse Tanks

Nurse Tank Security

Nurse Tank Safety

Nurse Tank Cart Components

Cart Hitch

Nurse Tank Front End

Nurse Tank Forward Fittings

Nurse Tank Sides and Mid-Section

Missing Nameplate?

Nurse Tank Rear End

Nurse Tank Acceptance

Anhydrous Application

Get Expert Advice

Weather Extremes

Cold Weather Low Flow

Hot Weather Venting

NH3 Temperature and Pressure Relationship

Avoid Dead Calm

Wash Water

Field Operation Safety

Dry Run

Row Implement Adjustments

Sealer Adjustment

Start of Pass Planning

Starting Application

Field Turns

Stopping Application

Suspending Application

Unhitching Nurse Tank

Exchanging Nurse Tanks

Final Nurse Tank Unhitch

Folding and Unfolding

General Safety Rules

Breakaway Event

Ammonia Maintenance Safety

Incompatible Cleaners

Incompatible Materials

Use a Mirror

About Bleed Valves:

Avoid Trapped Anhydrous

Avoid Line Traps

Clearing a Line Trap

Avoid Ball Traps

System Discharge

Normal Discharge

Hydrostatic Relief Valve Maintenance

Relief Valve Inspection

Valve Replacement

Appendix

Single-Cooler NH3 Plumbing

Index