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PETOL™ Bull Tong
LA116H
Operating Manual
GEARENCH™
P.O. Box 192
4450 South Highway 6
Clifton, Texas 76634
Phone: (254) 675-8651
Fax: (254) 675-6100
© 2014 by GEARENCH. All rights reserved
Form LA116H revision 01/10/14
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Table of Contents
LA116H PETOL™ Bull Tong Description .......................................................................... 1
Warranty ................................................................................................................................. 2
Overloading / Shock Loads / Side Loading ........................................................................................................ 6
Environmental Conditions .................................................................................................................................. 7
Normal Life Expectancy ..................................................................................................................................... 7
Lubrication ......................................................................................................................................................... 8
Periodic Inspection List for PETOL Special Chain ............................................................................................ 8
Operation ............................................................................................................................... 11
Suspension ........................................................................................................................................................ 11
Chain Identification Guide ............................................................................................................................... 12
Dimensions ............................................................................................................................. 13
Torque and Diameter Capacity ........................................................................................... 14
Chain Selection ...................................................................................................................... 15
Torque – Handle Load Diagram ......................................................................................... 16
Parts List ................................................................................................................................ 17
Tong Assembly Parts Li s t................................................................................................................................. 17
Chain Assembly Part s List ............................................................................................................................... 19
Wear Limits ........................................................................................................................... 20
Non-Destructive Evaluation ................................................................................................. 21
Weld Repairs ......................................................................................................................... 22
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LA116H PETOL™ Bull Tong Description
The PETOL™ Bull Tongs were desi gned for making up and breaking out casing, drill pipe,
and tubular products requiring substantial torque. The LA116H will work diameters from 16
inches to 40 inches and up to 81,900 foot pound of torque.
The tong is adjusted by exchanging chain sections and chain hooks to work the various
diameters.
The Bull Tongs have the following features:
A high strength, heat treated alloy chain for rugged, dependable service.
High strength alloy steels used throughout for long life with the toughest jobs.
A hanger attached to the tong handle to suspend the tong during operation when used
on vertical pipe applications.
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Warranty
What Is Covered
GEARENCH™ tools are expressly warranted to you, the purchaser, to be free of defects in material and
workmanship.
How Long Coverage Lasts
This express warranty lasts for the lifetime of the GEARENCH tool. Warranty coverage ends when the tool
becomes unusable for reasons other than defects in workmanship or material.
How Can You Get Warranty Service
To obtain the benefit of this warranty, contact a GEARENCH sales representative in Clifton, Texas.
GEARENCH · 4450 South Highway 6 · P.O. Box 192 · Clifton, TX 76634
What Will We Do To Correct Problems
Warranted products will be repaired or replaced, at GEARENCH’s option, and returned at no charge to you, the
original purchaser; or, if after three attempts at repair or replacement during the warranty period, the product
defect in material or workmanship persists, you can elect to receive a full refund of your original purchase price
for the product.
What Is Not Covered
Defects, failures or conditions that are due to normal wear and tear, abuse or misuse, are not covered by this
limited warranty. In add ition, this li mited warranty is in lieu o f all other warranties, e xpress or i mplied, verba l
or written. To the maximum extent allowed b y law GEARENCH disclaims all implied warranties, incl uding
implied warranties of merchantability and/or fitness for a particular purpose. GEARENCH also specifically
denies any liability for any incidental damages and/or consequential damages, including but not limited to
property damage to property other than the product itself, loss of sales profits, down time, costs or any other
damages measurable in money, whe ther or not included in the forego ing enumeration.
Please be advised that some states do not allow the exclusion or limitation of incidental or consequential
damages, so t hi s li mi ta t io n o r e xclu si o n ma y no t ap p l y to yo u. This warr ant y gi ve s yo u specific rights, and yo u
may also have other rig hts, which vary from state to state, province to province, or country to country.
Are Personal Injuries Covered
In the event you, someone wo r kin g for yo u, o r an y ot he r pe r so n s usta i n a p e rso na l i nj ury as a result o f u sin g t he
GEARENCH tool, GEARENCH limits its potential liability for such a claim or injury to the fullest extent
allowed by law, and disclaims a nd denies any liability for such personal injury.
Please be advised that so me states do not allo w the exclusion or limitation of liability for personal injuries, so
the above limitation or exclusion may not apply to you, or the individual cla iming injury.
No Other Express Warranty Applies
This GEARENCH LIMITED WARRANTY is the sole and exclusive warranty, express or implied for
GEARENCH products. No employee, agent, dealer or other person is authorized to alter, modify, expand or
reduce the terms of this warranty or to make any other warranty on behalf of GEARENCH.
Law Applicable
All matters related to the sa le and/or use of the GEARENCH to ol that is the subject of this limited warranty,
along with the construction and enforce ment of the terms of this limited warranty itse lf, shall be subject to the
substantive and procedural laws of the state of Texas, not the conflicts of laws provisions of Texas, but rather
the laws of Texas themselves.
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Forum Selection Clause
Any dispute arising out of the sale and/or use of the GEARENCH tool that is the subject of this limited
warranty shall be presented in the form of a cla im or lawsuit to the offices of GEAREN CH in Clifto n, Bosque
County, T exas. No c lai m or s uit ma y b e br oug ht a gains t G EAR ENC H, a risi ng o ut o f the sal e a nd/o r use of the
tool, or arising out of the te rms of this warranty, except in such forum. Purc hase and/or use of the GEARENCH
tool makes you subject to the benefits and limitations of this limited warranty. Accord ingly, a ny writ, jud gme nt
or other enforcement, obtained from a jurisdiction, county, parish, state or federal court or other country, other
that from the forum identified above, shall be void and unenforceable against GEARENCH.
Arbitration Clause
In the event of dispute or claim arise s out of the sale and/or use o f the GEARENCH tool that is the s ubject of
this limited warranty, or arises out of the interpretation or enforcement of the terms and conditions of this
limited warranty, such dispute shall be sub mitted to binding arbitration pursuant to the rules of the American
Arbitration Association. I f required to acco mplish the purpo se of this Arbitration clause, the p urchaser hereb y
expressly waives any right to de mand trial by jury.
Complete Agreement
This express limited warranty contains the entire agreement regarding express or implied warranties related to
the GEARENCH tool that is the subject of it. No writing or language contained in the purchase order or any
other document of the purchaser, or invoice of GEARENCH or any intermediate seller, shall be construed as
modifying, in any way, the righ ts and liabilities co ntained in this limi ted warranty. GEARENCH exp ressly
disclaims any obligations expressed in any customer purchase order or document that are contrary to the terms
and limitations of this warrant y.
Severability
If any term or limitation c ontained i n this li mited warra nty is d eemed u nenforceab le by law, then the ter m shall
be severed from the remaining portions of the limited warranty which shall remain enforceable.
All communications to GE ARENCH regarding the use of the tool and any aspect of the sale of the tool of this
limited warranty should be addressed to GEARENCH.
GEARENCH · 4450 South Highway 6 · P.O. Box 192 · Clifton, TX 76634
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Safe Pract ices and Procedures
Responsibility
"It is the responsibility of the employer to train the employee in the proper selection and
usage of tools, chains, etc., and to ensure that they are selected and used in that manner. In
many instances, injury results because it is assumed that anybody knows how to use common
hand tools. Observations and the record show that this is not the case. A part of every job
instruction program should therefore be detailed training in the proper use of hand tools (and
of all other special tools and equipment needed to accomplish the job)." - (Source: National
Safety Council)
"Employers are responsible for the safe condition of tools and equipment used by employees,
including tools and equipment which may be furnished by employees." - (Source: OSHA
1910.242A)
Replacement Parts
Use only PETOL™ replacement parts - no other parts are of comparable strength, quality and
interchangeability.
Safety
While we pride ourselves on the quality and dependability we build into GEARENCH™
tools and products, we caution users that it is only prudent to know and follow the simple
rules of safety when using our products, or anyone else's.
Always follow safe practices and procedures in accordance with the recommendations of
OSHA, The National Safety Council (NSC), The Hand Tools Institute (HTI), The National
Association of Chain Manufacturers (NACM), The International Association of Drilling
Contractors ( IADC), Et c. All applicable Governmental rules, regulations or restrictions, now
in effect or which may be promulgated, take precedence over the suggestions in this
publication. The information in this publication is designed to supplement standard safe
practices and procedures, not in lieu of, or replacement thereof.
Safe Practices
(Source: The National Safety Council)
Failure to observe one or more of the following five safe practices accounts for most hand
and powered tool accidents:
1. ALWAYS WEAR SAFETY GOGGLES TO PROTECT EYES
2. SELECT THE RIGHT TOOL FOR THE JOB
3. KEEP TOOLS IN GOOD CONDITION
4. USE TOOLS CORRECTLY
5. KEEP TOOLS IN A SAFE PLACE
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Safety Goggles must always be worn by persons in any area where hand and powered tools
are being used.
Never apply ex cess leverage t o a wrench o r tool b y means of a "Cheater Bar". Never strik e
wrenches and tools with hammers or other objects.
All tools should be kept clean, inspected on a regular basis, and replaced when th ey show
signs of wear.
Be especially careful not to place yourself in a position that could result in bodily injury in
the event of a failure. Brace yourself firmly and pull rather than push when wrenching. (If
necessary to push, do so with the flat of the hand rather than gripping around the wrench.)
Never stand under or near loads being hoisted off the ground.
READ SAFE PRACTICES AND PROCEDURES MANUA L, CATALOG INFORMATION
AND PRODUCT LABELING PRIOR TO OPERATION.
Spinning and drill pipe chain, cathead chain, and the PETOL™ Connecting Link attachment
are designed for the specific purpose for which the name indicates. Chains and attachments
that are to be used for any other purpose should be selected in accordance with the
recommendations of ASTM, NACM, Rigger's Handbook, and the commercial chain
manufacturer's technical manuals.
Safety Sources and Publications
In the interest of Safety the following sources of Safety information is furnished:
The Hand Tools Institute (HTI)
25 North Broadway
Tarrytown, New York 10591
(914) 332-0040
www.hti.org
The National Safety Council (NSC)
1121 Spring Lake Drive
Itasca, Illinois 60143-3201
(630) 285-1121
www.nsc.org
International Safety Council
1121 Spring Lake Drive
Itasca, Illinois 60143-3201
(630) 285-1121
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Responsibility of Distributors
IT IS THE RESPONSIBILITY OF THE PURCHASE RS OF GEARENCH PR ODUCTS TO
CONVEY THE INFORMATION IN THIS PUBLICATION AND ANY OTHER
INFORMATION RELATING TO THE INDIVIDUAL PRODUCT, THROUGH THE
CHANNELS OF DISTRIBUTION, DOWN TO AND INCLUDING THE INDIVIDUAL
USING THE PRODUCT
NOTE:
In view of the fact that the actual use determines whether safety requirements have
been met, the ultimate responsibility to comply rests with the end user.
The service life of leaf chains can be altered by a variety of adverse operating conditions.
The following information discusses the most important of these conditions for consideration
when operating or scheduling replacement of leaf chain systems.
Overloading / Shock Loads / Side Loading
Attempting to “inch loads which are beyond the rated capacity of the tool.
Striking the tool with a hammer or other object while force is being exerted in an attempt to
loosen a “frozen” joint.
Side pull can be caused by pulling or pushing on the tong in a direction that is not along a
perpendicular plane, unleveled mounting of the tong or vise, inadequate support of the part
being broken out, and improper seating of the part being broken out in the tong or vise.
Improper seating will occur when the diameter of the part is not consistent within the width
of the tong or vise jaw.
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Environmental Conditions
Wrench chains operate in widely varying environments, from wet outdoor conditions to
mildly or highly corrosive industrial atmospheres. They can also be exposed to abrasives
such as sand or grit.
The possible effects include:
Moisture - Corrosion and rust reduce chain strength by causing pitting and cracking.
Temperature - Very cold temperatures reduce chain strength by embrittlement.
Chemical Solutions or Vapors - Corrosive attack of the chain components’ grain structure
and/or the mechanical connections between the chain components (crevice corrosion)
may occur. Cracking often is microscopic. Propagation to complete failure can be
eventual or sudden.
Abrasives - Accelerated wearing and scoring of the articulating chain members (pins and
plates) may occur, with a corresponding reduction in chain strength. Due to
inaccessibility of the bearing surfaces (pin surfaces and plate apertures), wear and scoring
are not readily noticeable.
These conditions, when coupled with normal chain wear and inherent residual stress
(normally in the chain as constructed), can result in environmentally assisted failure. It is
impossible to predict chain life under complex conditions, as the degree of hostility and its
effects are dependent on many variables such as temperature, time of exposure, concentration
of corrosive atmosphere or medium, degree of abrasive wear, etc. Establishing the degree
and frequency of unpredictable dynamic loading is also difficult.
Normal Life Expectancy
A leaf chain’s normal life expectancy can be expressed as a maximum percent of elongation.
This is generally between 2% and 3% of pitch. As the chain flexes back and forth, the
bearing joints (pins and inside link plates) gradually wear from articulation. As with all steel
bearing surfaces, the precision hardened steel joints of leaf chain require a constant film of
oil between mating parts to prevent wear and to resist corrosion.
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Lubrication
One of the most important but often-overlooked factors is adequate lubrication. In addition
to reducing internal friction, maintaining a film of oil on all chain surfaces will inhibit rusting
and corrosion, This is important as corrosion of highly stressed, hardened steel chain
components can cause a major reduction in the load capacity of leaf chain and result in link
plate cracking.
Protection from corrosion is important in storage as well as in service. The factory lubricant
applied to PETOL™ Chain is a “Fingerprint Neutralizing Water-Displacing Corrosion
Preventative”. This is an excellent rust and corrosion inhibitor for chains in storage. When
installing these chains new, do not attempt to steam clean or degrease this lubricant. A grade
of SAE 30 or 40 weight, non-detergent motor oil should be used as supplemental lubricant
and a film of this oil should be maintained on all surfaces and internal bearing joints. Also,
do not attempt to paint new chains. Though painting may help inhibit corrosion, it will seal
off critical clearances and restricts oil from reaching the pin surfaces where it is needed for
good joint lubrication.
When operating in dusty environments, lubricated chains will accumulate a paste-like
buildup of grime. At periodic intervals, this buildup should be removed by cleaning and the
chain should be immediately re-lubricated. Do not use caustic or acid type cleaners; use a
stiff brush and a certified safe petroleum base solvent.
Periodic Inspection List for PETOL™ Special Chain
1
. PRIOR TO EACH USE, LEAF CHAIN AND TOOLS SHOULD BE
INSPECTED FOR SERVICEABILITY AND LUBRICATION.
2. USE ONLY PETOL™ AND TITAN™ REPLACEMENT PARTS - NO
OTHER PARTS ARE OF COMPARABLE STRENGTH, QUALITY, AND
INTERCHANGEABILITY.
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Safety Precautions
1. Always wear safety goggles to protect eyes.
2. Select the right tool for the job.
3. Keep tools in good condition.
4. Use tools correctly.
5. Keep tools in a safe place.
6. Wear protective clothing, gloves and safety shoes as appropriate.
7. Use lengths of assembled chain. Do not build lengths from individual components.
8. Do not attempt to rework damaged chain by replacing only the components obviously
faulty. The entire chain may be compromised and should be discarded.
9. Never electroplate assembled leaf chains or components. Plating will result in failure
from hydrogen embrittlement.
10. Do not weld any chain or component. Welding spatter should never be allowed to
come into contact with chain or components.
11. Leaf chains are manufactured exclusively from heat-treated steels and therefore must
not be annealed. If heating a chain with a cutting torch is absolutely necessary for
removal, the chain should not be reused.
12. Inspect chains frequently and regularly for link plate cracking, pin turning, pin
protrusion and corrosion.
13. Use only PETOL™ & TITAN™ replacement parts to ensure proper strength.
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Operation
The typical application of one Bull Tong is shown in the figure below. Normally an
additional tong is used as a backup. The backup tong is not shown for clarity. The tong will
exert torque in the direction shown. The tong will ratchet when moved in a direction
opposite to the line pull. Ratcheting is used when the tong must be pulled more than once to
completely makeup or breakout the connection.
Suspension
When working vertical pipe, the tong should be suspended by the attached hanger. Adjust
the hanger to obtain the best possible balance of the tong. Always use a suspension l ine of
adequate capacity to safely hold up the tong during operation.
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Chain Identification Guide
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Dimensions
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Torque and Diameter Capacity
Diameter
Torque
(inches)
(foot-pounds)
(pounds)
16
44.62
78,600
21,100
17
44.83
78,600
21,100
18
45.03
78,700
21,000
19
45.24
78,800
20,900
20
45.45
78,900
20,800
21
45.65
79,000
20,800
22
45.86
79,100
20,700
23
46.07
79,200
20,600
24
46.28
79,300
20,600
25
46.48
79,400
20,500
26
46.69
79,600
20,400
27
46.90
79,700
20,400
28
47.10
79,800
20,300
29
47.31
80,000
20,300
30
47.52
80,100
20,200
31
47.72
80,300
20,200
32
47.93
80,500
20,100
33
48.14
80,600
20,100
34
48.35
80,800
20,100
35
48.55
81,000
20,000
36
48.76
81,200
20,000
37
48.97
81,300
19,900
38
49.17
81,500
19,900
39
49.38
81,700
19,900
40
49.59
81,900
19,800
The following table lists the maximum working torques and the corresponding handle loads
for the diameter range of the tong.
Arm
Length
Maximum
Torque
Maximum
Line Pull
WARNING: Under no circumstances should the maximum working load be
exceeded. Overloading may result in injury or death. Always use a load cell or
other calibrated indicating device to monitor the line pull on the tong to avoid an
overload.
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Chain
Min Dia.
(inches)
Max Dia.
(inches)
Chain
Min Dia.
(inches)
Max Dia.
(inches)
161-45-27L6250
16
16-5/8
161-45-49L6250
28-1/8
28-5/8
161-45-29L4500
16-1/8
17-1/8
161-45-51L4500
28-3/4
29-1/4
161-45-29L5375
16-3/8
17-3/8
161-45-51L5375
29
29-1/2
161-45-29L6250
16-5/8
17-5/8
161-45-51L6250
29-1/4
29-3/4
161-45-31L4500
17-1/8
18-1/8
161-45-53L4500
29-3/4
30-1/4
161-45-31L5375
17-1/2
18-1/2
161-45-53L5375
30
30-1/2
161-45-31L6250
17-3/4
18-3/4
161-45-53L6250
30-3/8
30-7/8
161-45-33L4500
18-1/2
19-3/8
161-45-55L4500
31
31-3/8
161-45-33L5375
18-3/4
19-5/8
161-45-55L5375
31-1/4
31-5/8
161-45-33L6250
19
19-7/8
161-45-55L6250
31-1/2
31-7/8
161-45-35L4500
19-5/8
20-1/2
161-45-57L4500
32
32-1/2
161-45-35L5375
19-7/8
20-3/4
161-45-57L5375
32-1/2
32-3/4
161-45-35L6250
20-1/8
21
161-45-57L6250
32-3/4
33
161-45-37L4500
20-3/4
21-1/2
161-45-59L4500
33-1/8
33-1/2
161-45-37L5375
21-1/8
21-7/8
161-45-59L5375
33-1/2
33-3/4
161-45-37L6250
21-3/8
22-1/8
161-45-59L6250
33-3/4
34-1/8
161-45-39L4500
21-7/8
22-5/8
161-45-61L4500
34-1/4
34-5/8
161-45-39L5375
22-1/4
23
161-45-61L5375
34-5/8
34-7/8
161-45-39L6250
22-1/2
23-1/4
161-45-61L6250
34-7/8
35-1/8
161-45-41L4500
23
23-3/4
161-45-63L4500
35-1/4
35-5/8
161-45-41L5375
23-3/8
24-1/8
161-45-63L5375
35-5/8
36
161-45-41L6250
23-1/2
24-1/4
161-45-63L6250
36
36-1/4
161-45-43L4500
24-1/8
24-7/8
161-45-65L4500
36-3/8
36-3/4
161-45-43L5375
24-3/8
25-1/8
161-45-65L5375
36-3/4
37
161-45-43L6250
24-5/8
25-3/8
161-45-65L6250
37
37-1/4
161-45-45L4500
25-1/4
25-7/8
161-45-67L4500
37-3/8
37-7/8
161-45-45L5375
25-5/8
26-1/4
161-45-67L5375
37-7/8
38-1/8
161-45-45L6250
25-7/8
26-1/2
161-45-67L6250
38-1/8
38-3/8
161-45-47L4500
26-3/8
27
161-45-69L4500
38-1/2
38-7/8
161-45-47L5375
26-5/8
27-1/4
161-45-69L5375
38-7/8
39-1/8
161-45-47L6250
27
27-5/8
161-45-69L6250
39-1/8
39-1/2
161-45-49L4500
27-5/8
28-1/8
161-45-71L4500
39-5/8
40
161-45-49L5375
27-7/8
28-3/8
Chain Selec tion
The following table lists the diameter range of all chain assemblies used with this tong.
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Torque – Handle Load Diagram
To use chart:
Draw a line from the diameter of the pipe through the desired torque. Read the handle load
from the right hand column.
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Parts List
The following drawings, diagrams, and parts lists describe all parts, which may be needed as
replacement items.
All tong components are manufactured only by GEARENCH™. DO NOT
ATTEMPT TO SUBSTITUTE THESE COMPONENTS. The tong will
not work properly unless these components are matched to the specific
application. Consult our factory as your requirements change. Any nonGEARENCH substitutions of these components void all warranties and
subject the user to assumption of liabilities resulting from subsequent use.
Tong Assembly Parts List
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Tong Assembly Parts List
Item
Qty.
Part Number
Description
1 1 LH116H
Handle
2 1 LJ116H
Jaw 3 1
HP249
Jaw-handle pin with kliprings
4 2 HXRR150
Retaining r i ng only
5 1 HS18
Spring (outside)
6 1 HS09
Spring (inside)
7 1 HG09
Spring guide
8 1 HU36
Spring pin bushing
9 1 HP250
Spring pin with cotter
10 1 HXC003
Spring pin c otter only
11 2 HI06D
Diamond point insert
12 2 HP904
Insert key
13 2 HS21
Insert key spring
14 1 HH16
Bar hanger
15 1 HU49
Hanger bushing
16 1 HB19
Hanger bolt with nut
17 1 HXW001
Hanger flat washer
18 1 HXW002
Hanger lock washer
19 1 HXN023
Hanger nut only
20 1 HP234
Master link – handle pin
21 1 See tables
Chain assembly (not shown)
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Chain Assembly Parts List
Item
Part No.
Description
1
161-45-02
Special chain only
1
161-45-04
Special chain only
1
161-45-05
Special chain only
1
161-45-07
Special chain only
2
HM06-45
Master link 3 HP247
Master link – chain rivet
4
161-45-02-4500
Chain hook assembly
4
161-45-02-5375
Chain hook assembly
4
161-45-02-6250
Chain hook assembly
5
HC01-45-4500
Chain hook only
5
HC01-45-5375
Chain hook only
5
HC01-45-6250
Chain hook only
6
HP247
Chain hook rivet
7
HB52
Splice bolt with nut
8
HXN016
Splice bolt nut only
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Wear Limits
Part
Number
Description
Location
Limit Dimension
HP249
Jaw – handle pin
Pin body diameter
1.485 (min)
HP234
Chain – handle pin
Pin body diameter
0.985 (min)
HB52
Chain splice bolts
Bolt body diameter
0.615 (min)
161-45-XX
Chain links
Pin hole diameter
0.640 (max)
161-45-XX
Chain links
Pitch center – center
1.738 (max per pitch)
LH116H
Handle
Jaw pin hole diameter
1.525 (max)
LH116H
Handle
Chain pin hole
diameter (master link)
1.025 (max)
LH116H
Handle
Load loop diameter
2.125 (max)
LJ116H
Jaw
Jaw pin hole diameter
1.525 (max)
The following table indicates limiting diameters on the components of the PETOL™ Bull
Tong. When localized wear is beyond any one of the limits indicated, the component should
be replaced.
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Non-Destructive Ev alu at io n
The figures below ind icate the critical areas of the tong handle an d jaw. A critical area is
defined as an ar ea in which no unrepaired cr ack indications are permitt ed and in which no
major weld repairs are permitt ed. There are no cri ti cal are as on th e bar h an ger . W el d r epai rs
are only permitted on the handle, jaw, and bar hanger.
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Weld Repairs
Scope:
This procedure is to be followed for minor repairs of crack indications in heat treated alloy steels. A
weld repair shall be considered minor when the depth of the cavity does not exceed 30% of the actual
wall thickness or 1 inch, whichever is smaller, or when the extent of the cavity does not exceed
approximately 10 square inches. Major weld repairs must be performed by GEARENCH™ or an
approved repair center using appropriate procedures followed by full heat treatment and load testing.
Application:
This procedure applies to steel castings, forgings and, wrought with carbon content between 0.15%
and 0.31%.
Weld preparation:
The crack indication is to be removed by carbon arc gouging, grinding, or machining until all
indication is removed. Magnetic particle inspection shall be used to verify that the crack indication
has been removed.
Filler material and process:
Repairs made with the FCAW process shall use a filler material of class E120T5-K4 or equivale nt
with CO2 shielding gas. Repairs made with the SMAW process shall use a filler material of type E12018-M. All welding is to be performed by a qualified welder.
Preheat:
Preheat the weld area to 300°F minimum.
Interpass temperature:
The interpass temperature is to be 600°F maximum. All weld slag to be removed prior to application
of additional layers by chipping, grinding or wire brushing. Do not peen the weld repair.
Post weld heat treatment:
Do not allow weld to cool below 300°F before stress relief. Post heat immediately after welding to
1010 - 1040°F for 1 hour per inch of thickness, 2 hours minimum at temperature. Water quench after
stress relief.
Weld blending and inspection:
The weld is to be ground flush with the adjacent parent material. The weld is to be inspected by
magnetic particle to verify that the weld area is free of all crack indications.
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