Emerson BM5A Instruction Manual
Instruction Manual
D103580X012
January 2021
Type BM5A Slam-Shut Valve
Table of Contents
Introduction ................................................................. 1
Specifications ............................................................. 2
Principle of Operation ................................................. 4
Transport and Handling .............................................. 5
Installation .................................................................. 7
Overpressure Protection ............................................. 8
Startup ........................................................................ 8
Slam-Shut Controller Adjustment ...............................9
Shutdown ....................................................................9
Maintenance ............................................................... 9
Parts Ordering ........................................................... 11
Spare Parts ............................................................... 11
Parts Lists ................................................................. 13
Type BM5A
WARNING
▲
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion
and/or fire causing property damage and
personal injury or death.
Tartarini™ slam-shut valve must be
installed, operated and maintained
in accordance with federal,
state and local codes, rules and
regulations and Emerson Process
Management Regulator Technologies,
Inc. (Emerson) instructions.
If the slam-shut valve vents gas or a
leak develops in the system, service
to the unit may be required. Failure
to correct trouble could result in a
hazardous condition.
Call a gas service person to service the
unit. Only a qualified person must install
or service the slam-shut valve.
Figure 1. Type BM5A Slam-Shut Valve
Introduction
Scope of the Manual
This Instruction Manual provides instructions for
installation, startup, maintenance and spare parts
ordering for the Type BM5A slam-shut valves.
This manual also contains information for the
OS/80X Series slam-shut controller.
Product Description
The Type BM5A slam-shut valves are axial flow
type with a single seat and counterbalanced shutter.
They are designed for use in high pressure natural
gas transmission/city gate stations, large capacity
distribution systems and power plant feeds.
They provide smooth and reliable operation, tight
shutoff and long life.
Type BM5A
Specifications
The Specifications section gives some general specifications for the Type BM5A slam-shut valve. The nameplates
give detailed information for a particular slam-shut valve as built in the factory.
Available Body Sizes
DN 25, 50, 80, 100 and 150 /
NPS 1, 2, 3, 4 and 6
Available End Connection Styles
CL300 RF and CL600 RF
Maximum Allowable Pressure
(1)
CL300 RF: 51.7 bar / 750 psig
CL600 RF: 103 bar / 1500 psig
(1)(2)
Maximum Operating Inlet Pressure (PS
max
)
CL300 RF: 50.0 bar / 725 psig
CL600 RF: 100 bar / 1450 psig
Inlet Pressure Range (bpu)
(1)(2)
CL300 RF: 0 to 50.0 bar / 0 to 725 psig
CL600 RF: 0 to 100 bar / 0 to 1450 psig
Overpressure Set Range (Wdo)
CL300 RF: 0.03 to 50.0 bar / 0.44 to 725 psig
CL600 RF: 0.03 to 80.0 bar / 0.44 to 1160 psig
Underpressure Set Range (Wdu)
CL300 RF: 0.01 to 50.0 bar / 0.15 to 725 psig
CL600 RF: 0.01 to 80.0 bar / 0.15 to 1160 psig
Accuracy Class (AG)
Up to ± 1%
Response Time (ta)
≤ 1 s
Minimum/Maximum Allowable Temperature (TS)
Class 1: -10 to 60°C / 14 to 140°F
Working Temperature Capabilities
(1)(2)
Standard Version, Nitrile (NBR) or
Fluorocarbon (FKM): -10 to 60°C / 14 to 140°F
Construction Materials
Slam-Shut Valve
Body: ASTM A105 Steel
Shutter: Steel
O-ring: Nitrile (NBR) or Fluorocarbon (FKM)
Pad: Nitrile (NBR) or Fluorocarbon (FKM)
Pad holder: Steel
OS/80X Series Slam-Shut Controller
Body: Aluminum (Types OS/80X-BP and
OS/80X-BPA-D) or Steel (Types OS/80X-MPA-D
and OS/80X-APA-D)
Diaphragm: Fabric-finished Nitrile (NBR)
O-ring: Nitrile (NBR)
Types OS/84X and OS/88X
Slam-Shut Controller
Body: Brass
Lip Seal: Polytetrafluoroethylene (PTFE)
O-ring: Nitrile (NBR)
Types PRX/181-PN, PRX/182-PN,
PRX-AP/181-PN and PRX-AP/182-PN Pilots
Body: Steel
Diaphragm: Fabric-finished Nitrile (NBR)
O-ring: Nitrile (NBR)
Slam-Shut Controller and Pilot Connection
1/4 NPT
Approximate Weights
See Table 3
(1)(2)
Accessories
• Proximity Switch or Micro Switch
for Remote Monitoring
• Solenoid Valve for Remote-controlled Closure
• IT/3V Three-Way Valve for Setting Control
Available Slam-Shut Controllers
See Table 2
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
2. Published values are in accordance with EN14382 specications.
This product is designed to be used with fuel gases of
1st and 2nd family according to EN 437 and with other
non-aggressive and non-fuel gases. For any other
gases, other than natural gas, please contact your
local Sales Office.
Use of gas pressure devices (safety shut-off
devices - SSD slam-shut type) shall comply with
EN 12186 and EN 12279.
Safety slam-shut valves manufactured by Emerson
must use additional pressure accessories (e.g.
controller or filters) manufactured or approved
by Emerson. Emerson is not responsible for any
possible inefficiency due to installation of additional
pressure accessories not manufactured or approved
by Emerson.
When pressure containing parts of safety slam-shut
device (SSD) valve and controller have different
maximum allowable pressures (PS), the SSD is
differential strength type.
2
Note 1: See Body Size and End Connection Style
Note 2: Year of manufacture
Note 3: Class A or Class B
Note 4: Class 1: -10 to 60°C / 14 to 140°F
Note 5: Maximum Allowable Pressure (PS)
Figure 2. Type BM5A Slam-Shut Valves Nameplate
Table 1. PED Category for Type BM5A Slam-Shut Valves
PRODUCT SIZE CATEGORY FLUID GROUP
DN 25, 50, 80, 100, and 150 /
NPS 1, 2, 3, 4, and 6
IV 1
Only valves with overpressure and underpressure settings can be classied
in Class A.
CL300 RF: 50 bar / 725 psig
CL600 RF: 100 bar / 1450 psig
Type BM5A
Pressure Equipment Directive (PED)
Categories and Fluid Group
According to EN 14382, only in integral strength type
and Class A configuration (when both overpressure
and underpressure protections are set up) this
slam- shut valve can be classified like a safety
accessory according to PED.
The minimum PS between SSD valve and controller
shall be the PS of the safety accessory to comply the
provisions of EN 14382 about integral strength type.
This product, in its Class A and integral strength
configuration, is a safety accessory for pressure
equipment in the following PED 2014/68/EU
categories on Table 1.
Built-in pressure accessories (e.g. controllers
Types OS/80 and OS/80-X) conform to
PED Article 4 section 3 and were designed and
manufactured in accordance with sound engineering
practice (SEP).
Per Article 4 section 3, these “SEP” products must not
bear the CE marking.
ATEX Requirements
WARNING
▲
If the provisions of EN 12186 and
EN 12279, national regulations or any
specific manufacturer recommendations
are not put into practice before
installation and if purge by inert gas
is not carried out before equipment’s
start-up and shut-down operations,
a potential external and internal
explosive atmosphere can be present in
equipment and gas pressure regulating,
measuring stations or installations.
If a presence of foreign material in the pipelines is
foreseen and purge by inert gas is not carried out,
the following procedure is recommended to avoid any
possible external ignition source inside the equipment
due to mechanical generated sparks:
• Drainage to safe area via drain lines of foreign
materials, if any, by inflow of fuel gas with low
velocity in the pipe-work (5 m/sec.)
3
Type BM5A
Figure 3. Type OS/80X-BP Slam-Shut Controller
Table 2. OS/80X and OS/80X-PN Series Slam-Shut Controller Details
TYPE
OS/80X-BP 5.0 73
OS/80X-BPA-D 20.0 290
OS/80X-MPA-D
OS/80X-APA-D 2.0 29 10.0 145 0.30 4.35 7.0 102
OS/84X 5.0 73 41.0 595 4.0 58 16.0 232
OS/88X 18.0 261 80.0 1160 8.0 116 70.0 1015
OS/80X-PN
OS/84X-PN
1. Type OS/80X-PN: Made of a Type OS/80X-APA-D, set at about 0.4 bar and Type PRX/182-PN pilot for overpressure and Type PRX/181-PN for underpressure as necessary to control the
system pressure. Type OS/84X-PN (Safety accessory): Made of a Type OS/84X, set at about 20 bar and Type PRX-AP/182-PN pilot for overpressure and Type PRX-AP/181-PN for underpressure as necessary to control the system pressure.
(1)
(1)
BODY RATING
bar psig bar psig bar psig bar psig bar psig
100 1450
OVERPRESSURE SET RANGE, W
Min Max Min Max
0.03 0.44 2.0 29 0.01 0.15 0.60 8.7 Aluminum
0.50 7.25 5.0 73 0.25 3.63 4.0 58
0.50 7.25 40.0 580 0.50 7.25 40.0 580 Steel
30.0 435 80.0 1160 30.0 435 80.0 1160 Brass
In any case,
• Provisions of Directive 1999/92/EC and 89/655/EC
shall be enforced by gas pressure regulating,
measuring station or installation’s end user.
• With a view to preventing and providing protection
against explosions, technical and/or organizational
DO
• External tightness test shall be carried out after
each reassembly at installation site using testing
pressure in accordance with national rules.
• Periodical check/maintenance for surveillance shall
be carried out complying with national regulations,
if any, and specific manufacturer recommendations.
UNDERPRESSURE SET RANGE, W
DU
BODY
MATERIAL
Steel
Brass
measures appropriate to the nature of the operation
shall be taken (e.g.: filling/exhausting of fuel
Principle of Operation
gas of internal volume of the isolated part/entire
installation with vent lines to safe area - 7.5.2 of
EN 12186 and 7.4 of EN 12279; monitoring of
settings with further exhaust of fuel gas to safe
area; connection of isolated part/entire installation
to downstream pipeline; ….)
• Provision in 9.3 of EN 12186 and 12279 shall be
enforced by pressure regulating/measuring station/
installation’s end user.
Slam-Shut Valve
Type BM5A slam-shut valve is made of an axial
flow valve and a controller which keeps the valve
open in normal conditions. The slam-shut valve
features a shutter valve sliding axially, therefore,
no by-pass is needed for its opening even in the
presence of pressurized gas. This valve can only
be opened manually by turning the eccentric
shaft counterclockwise.
4
TYPE PS/79 OR PSA/79 PILOT
Type BM5A
BM5A SERIES
SLAM-SHUT VALVE
INLET PRESSURE, P
REGULATOR MOTORIZATION
PRESSURE, P
Figure 4. Type BM5A Slam-Shut Valve and Type FL or FLA1 Regulator Operational Schematics
u
m
TYPE FL OR FLA1
When the controlled pressure is within set values of
the slam-shut controller, the controller remains set and
prevents the rotation of the eccentric shaft, keeping
the valve open. When the controlled pressure varies
beyond setting limits, the controller releases the
eccentric shaft causing the valve close, following the
spring thrust.
The slam-shut controller has a manual release
push-button to quickly close the slam-shut valve
in case of emergency or during maintenance and
checking operations.
If the Type BM5A slam-shut valve is used with
pilot-operated pressure regulators, the supply
pressure to the pilot is taken from the downstream line
of the slam-shut valve. For this purpose, Type BM5A
slam-shut valve features a threaded hole which may
be used for the supply pressure to the pilot. This hole
is normally kept closed by a dowel.
STABILIZED PRESSURE, P
OUTLET PRESSURE, P
d
Slam-Shut Controller
The Type BM5A slam-shut valves are equipped with
the OS/80X or OS/80X-PN Series slam-shut controller.
The controllers are supplied in different models
according to set ranges required. The Type BM5A
with DN 150 / NPS 6 body size is equipped with a
reinforced version Type OS/80X-R.
OS/80X or OS/80X-PN Series slam-shut controller is
used to keep the slam-shut valve shutter open. These
Series are designed to operate on Overpressure
Shutoff (OPSO) only, Underpressure Shutoff (UPSO)
only, or Overpressure and Underpressure Shutoff
(OPSO/UPSO) protection.
Transport and Handling
Follow established transport and handling procedures
to avoid any damage on the pressure-containing parts
by shocks or excessive external pressure or stress.
Use appropriate eyebolts to aid in the handling of
heavy equipment.
Protect built-up sensing lines and pressure
accessories (e.g. slam-shut controller) from shocks or
excessive external pressure or stress.
D
REGULATOR
≥ 4D
up
5
Type BM5A
OUTLET PRESSURE
SLAM-SHUT VALVE WITH OS/80X SERIES CONTROLLER - INSTALLATION IN A LOW PRESSURE REGULATING LINE
BM5A SERIES
SLAM-SHUT VALVE
TYPE PS/79-1 TYPE PS/79-1
MONITOR
REGULATOR
D
≥ 4 X D
≥ 6 X D
BM5A SERIES
SLAM-SHUT VALVE
BLEED JET
(1 mm / 0.04 IN.)
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
TYPE PRX/18-PN
PRX SERIES:
B - SUPPLY PORT
L - LOADING PORT
A - SENSING PORT
TYPE PS/79 OR PSA/79
B
A
TYPE S PSA/79, PSA/80,
PSA/79-AP AND PSA/80-AP:
V - SENSING PORT
M - SUPPLY PORT
R - LOADING PORT
S - BLEED PORT
TYPE
PS/79 OR
PSA/79
V
R
SMM
MONITOR REGULATOR
TYPE PRX/182-PN
LL
B
A
R
V
S
D
≥ 4 X D
≥ 6 X D
SLAM-SHUT VALVE WITH OS/80X-PN SERIES CONTROLLER - OVERPRESSURE AND UNDERPRESSURE CONTROL DOWNSTREAM OF REGULATORS
Figure 5. Type BM5A Typical Connection/Installation Schematics
6
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