Instruction Manual
TM
D103665X012
October 2014 - Rev. 00
BM7 Series Slam-Shut Valve
SUMMARY
Introduction ........................................................................ 1
PED Categories and Fluid Group ...................................... 2
Characteristics ................................................................... 2
Labelling ............................................................................ 2
Overpressure Protection .................................................... 3
Transport and Handling ..................................................... 3
BM7 Series
Atex Requirements ............................................................ 3
Slam-Shut Controller ......................................................... 3
Dimensions and Weights ................................................... 4
Installation ......................................................................... 4
Startup ............................................................................... 5
OS/66 Slam-Shut Controller Adjustment ........................... 5
Shutdown ........................................................................... 5
Maintenance ...................................................................... 6
Spare Parts ........................................................................ 6
Troubleshooting ................................................................. 6
Parts List ............................................................................ 7
INTRODUCTION
Scope of Manual
Figure 1. BM7 Series Slam-Shut Valve
Product Description
The BM7 Series slam-shut valves are automatic isolating
elements suitable for installation as safety devices in
regulating stations.
The slam-shut valves in the BM7 series are used in ltered
natural gas reduction stations.
This product has been 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 agent.
The slam-shut valves used in the assemblies dealt with
into EN 12186 and EN 12279 are considered standard gas
pressure devices.
In the safety slam-shut valves manufactured by Emerson
Process shall be used additional pressure accessories (e.g.
controller or lters) manufactured and labeled by Emerson
Process.
Emerson Process will be not responsible for any possible
inefciency due to installation of not own production
additional pressure accessories.
This manual provides instructions for installation, startup,
maintenance and spare parts ordering for the BM7 Series
slam-shut valves.
When pressure containing parts of the product have different
maximum allowable pressures (PS), the slam-shut valve is
differential strength type.
BM7 Series
PED CATEGORIES AND FLUID GROUP
According to EN 14382, only in Class A conguration (when
both over and under pressure protections are set up), this
slam-shut valve can be classied 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 conguration is a safety
accessory for pressure equipment in the following Pressure
Equipment Directive 97/23/EC categories.
For values of PS over 6 bar the BM7 slam-shut is differential
strength.
Table 1. P.E.D. Category for BM7 Series Slam-Shut Valves
PRODUCT SIZE CATEGORY FLUID GROUP
DN 1 1/2” - 2” and DN 40-50 IV 1
Built-in pressure accessories (OS/66 controller) conform
to Pressure Equipment Directive (PED) 97/23/EC Article
3 section 3 and were designed and manufactured in
accordance with sound engineering practice (SEP).
Per Article 3 section 3, these “SEP” products must not bear
the CE marking.
Minimum/Maximum Allowable Temperature (TS)
(1)
See label.
1. The pressure/temperature limits indicated in this instruction manual or any
applicable standard or code limitation should not be exceeded.
Functional Features
Accuracy Class AG : ± 1%
Response Time ta : ≤ 1 second
Temperature
Standard Version: Working -10° to 60°C
Low Temperature Version: Working -20° to 60°C
Materials
Threaded body: Spheroidal cast iron
Flanged body: Spheroidal cast iron or steel
Covers: Aluminium
Seat: Bras
Diaphragm: Fabric Nitrile (NBR) rubber
CHARACTERISTICS
Body Sizes and End Connection Styles
DN 1 1/2” - 2” GAS
DN 40 - 50 PN 16
DN 50 ANSI 150 (on request)
WARNING
!
Maximum Operating Inlet Pressure
p
= 14 bar
u,max
Version with OS/66 controller
Underpressure Set Range
0.007 to 0.45 bar
Overpressure Set Range
0.022 to 0.6 bar
Version with OS/66-AP controller
Underpressure Set Range
0.1 to 2.5 bar
Overpressure Set Range
0.2 to 5 bar
(1)
LABELLING
Notified
APPARECCHIO TIPO / DEVICE TYPE
BOLOGNA ITALY
TARTARINI
MATRICOLA / ANNO
SERIAL Nr. / YEAR
REAZIONE
FAIL SAFE MODE
NORME ARMONIZ.
HARMONIZED STD.
CLASSE DI PERDITA
LEAKAGE CLASS
CLASSE FUNZIONALE
FUNCTIONAL CLASS
FLUIDO GRUPPO
FLUID GROUP
TS °C
TM
FAIL OPEN
EN
Note 3
Note 4Note 5
Figure 2. Label for BM7 Series Slam-Shut Valves
Note 1: See “Characteristics”
Note 2: Year of manufacture
Note 3: Class A or Class B
Only valves with overpressure and underpressure
settings can be classied in Class A.
Note 4: Class 1: -10°/60°C
Class 2: -20°/60°C
Note 5: PS: 14 bar
PSD: 6 bar
(differential strength congurations)
body
xxxx
DN1
Note 2
/
FAIL CLOSE
TIPO
TYPE
Cg
pmax
1
PS
DN2
Wds
Wdso
Wdsu
bar
bar x PS barPSD PT=Bar
DN seat
DN sede
Note 1
Note 5
pdo
bar
bar
bar
bar
1.5
2
Series BM7
OVERPRESSURE PROTECTION
The recommended maximum allowable pressures are
stamped on the slam-shut valve label.
Upstream overpressure protection shall be provided if the
inlet pressure is greater than the maximum operating inlet
pressure (p
(PS, PSD).
) and than the maximum allowable pressure
u,max
Downstream side pressure after slam-shut valve’s
intervention shall stay within the actual maximum operating
set-up range to avoid anomalous back pressures that can
damage the slam-shut controller.
Downstream overpressure protection shall be also provided
if the slam-shut valve outlet pressure can be greater than the
PS of the slam-shut controller (differential strength type).
Slam-shut valve operation below the maximum pressure
limitations does not preclude the possibility of damage from
external sources or debris in the line.
The slam-shut valve should be inspected for damage after
any intervention
TRANSPORT AND HANDLING
Established transport and handling procedures shall be
followed to avoid any damage on the pressure containing
parts by shocks or anomalous stresses.
Built-up sensing lines and slam-shut controller shall to be
protected by shocks or anomalous stresses
In any case,
• provisions of Directive 1999/92/EC and 89/655/EC shall
be enforced by gas pressure regulating/measuring station/
installation’s end user
• with a view to preventing and providing protection against
explosions, technical and/or organizational measures
appropriate to the nature of the operation shall be taken
(e.g. : lling/exhausting of fuel gas of internal volume
of the isolated part/entire installation with vent lines
to safe area - 7.5.2 of EN 12186 & 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 & 12279 shall be enforced by
pressure regulating/measuring station/installation’s end user
• 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
specic manufacturer recommendations.
SLAM-SHUT CONTROLLER
The following controllers are used with B/240 series
regulator with built-in slam-shut:
• OS/66 Series spring loaded controllers
ATEX REQUIREMENTS
WARNING
!
If the provisions of EN 12186 & EN 12279,
national regulations, if any, and specic
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 & gas pressure regulating/
measuring stations/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 inow of fuel gas with low velocity in the pipe-work
(5m/sec)
Figure 3. OS/66 Slam-Shut Controller
Table 2. OS/66 Characteristics
MODEL
OS/66 6 0.022 0.6 0.007 0.45
OS/66-AP 6 0.2 5 0.1 2.5
BODY
RESISTANCE
bar
OVERPRESSURE
SET RANGE
bar
W
do
Min. Max. Min. Max.
UNDERPRESSURE
SET RANGE
W
bar
du
Materials
Body: Aluminium
Cover: Steel
Diaphragm: NBR rubber
For further informations please
0048EN-OS66-IM.
see the Instruction Manual
3
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