LPG BOTTLING PLANT - BATHINDA
Doc No: 266763-000-SP-3037
Rev:A
Page 1 of 7
Design Philosophy
For
Fire Protection System
Hindustan Petroleum Corporation Ltd
LPG Bottling Plant,
Bathinda.
Mott MacDonald Consultants (India) Pvt.
Ltd.
Kothari House, CTS No. 185
Off Andheri - Kurla Road
Andheri (East)
Mumbai 400 059
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LPG BOTTLING PLANT - BATHINDA
Doc No: 266763-000-SP-3037
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Page 2 of 7
SR. NO. CONTENTS
PAGE NO.
1.
SCOPE
3
2.
CODES AND STANDARDS
3
3.
FIRE HYDRANT AND WATER SYSTEM DESCRIPTION
4
4.
FIRE HYDRANT AND WATER SPRAY SYSTEM OPERATION
6
5.
SPARE PHILOSOPHY
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6.
ATTACHMENTS
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LPG BOTTLING PLANT - BATHINDA
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Scope
The scope covers the fire protection system which includes Fire water Pumping system,
Hydrant System, Automatic Operated Medium Velocity Water Spray System and Hand
Appliances suitable for the type of risk / fire for different buildings, equipments, storage tanks
etc.
2.
Codes and Standards
Following codes and standards are referred to prepare this design specification
2.1. Design Codes
OISD - 144, 2008 “Liquefied Petroleum Gas”
2.2. Reference Codes
2.2.1. National Fire Protection Act. Codes by NFPA
NFPA 14: 2007
systems
NFPA 15: 2007
protection
NFPA 20: 2007
NFPA 24: 2007
Mains and
NFPA 30: 2008
Standard for installation of Standpipe and Hose
Standard for water spray fixed systems for fire
Standard for the installation of stationery pumps for fire
Protection
Specification for the Installation of Private Services
Their appurtenances
Flammable and Combustible Liquid Code
2.2.2. IS codes
IS 636:1988 Type B,
IS 903:1993
IS 5290:1993
IS 10221:1982
underground
IS 2171:1999
IS 2878: 2004
IS10658:1999
Fire
IS 2546:1974
Reinforced rubber-lined fire hose.
Fire hose delivery coupling and Branch pipe with nozzle
Hydrant valve (Landing valve)
Anti corrosion treatment (coating and wrapping) for
M.S. pipes
Specification for Portable (10 Kg) DCP fire Extinguisher
Fire Extinguisher (4.5 / 6.8) CO2 Type.
Specifications for High Capacity (25 / 50 / 75 Kg) DCP
Extinguisher
Specifications for Galvanised M.S Fire Bucket
2.2.3. TAC Codes
Fire Protection Manual (Issued by TAC)
Water spray codes of TAC
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LPG BOTTLING PLANT - BATHINDA
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Fire Hydrant and Water System Description
The following type of systems shall be provided for the LPG Terminal at Bathinda.
3.1. Fire Water Pumping System
Fire Water Pumping System comprises of Diesel Engine driven pumps of capacity
410 m3 / hr with adequate head (3 Working + 2 Standby) and Electric motor driven 2
Nos. Jockey Pumps of 20 m3 / hr with adequate head, Suction / Delivery piping,
Strainers, Gate Valves, Check Valves, Instruments, Diesel Engine Control Panels for
auto operation of Fire Pumps etc. shall be installed in common Fire Water Pump
House. Fire Water Pumps will draw the water from two dedicated Fire Water Tanks
each having fire water storage capacity of 3500 m3.
Make-up water system is also provided at the inlet of the Fire water tanks, which
consists of make up water pumps of capacity 35 m3/hr mounted on the make-up
water compartment of the underground sump. A 2” fresh water line is provided at the
inlet of the Make up water sump. Also, raw water from the bore wells is provided as
an alternate source in case of an emergency.
The make-up water pump shall start automatically whenever the level in any of the
two fire water tanks falls below 500 mm from the maximum level of the tank. The
pump shall stop automatically when the level shall reach the maximum level.
Make up fire water compartment of the underground sump will store mainly potable
water but even bore well pump water can be sourced to fill the make up fire water
sump, in case of emergency.
The fire water tanks are provided with level switch connections near the tank bottom
and tank top. The level switch provided at the tank top shall control the on-off of the
Make up water pumps, to maintain the total level in the tank to the required capacity.
The level switch at the tank bottom shall be ensure that the fire water pumps do not
run dry at low low level in the tank.
The fire water storage tanks shall be provided with a level switch which is a part of
Main
Control Panel installed in Main MCC block to indicate both Low-low level and Highhigh
level alarm / indication at Main Control Room.
Diesel engine control panel installed at Fire Water Pump House shall have following
minimum features

Auto/manual switch for start/stop of Diesel engine pump

Battery charger(s) with battery selector switch for working + standby sets of
batteries

Fail to start Alarm/indication

Low lube oil pressure Alarm/indication

High cooling water temperature Alarm/indication

Fuel low level Alarm/indication

Over speed Alarm/indication

Low hydrant pressure Alarm/indication
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All above alarms shall be repeated at Main Control Room in Main MCC room
Potential free NO/NC contacts shall be provided by Hydrant system contractor along
with pressure, level, flow switches and pump failure relay contacts. These contacts
shall be used by fire detection vendor to map this on fire detection and alarm system
with date and time stamping. Monitor modules will be provided by the fire detection
and alarm system vendor in marshalling box near pump/ Engine control panel.
3.2. Fire Hydrant System
Hydrant system comprises of a network of piping installed mostly above ground on
sleepers
around the areas to be protected excluding underground piping at road crossing and
paved
areas etc. Double Headed Hydrants, Water Monitors, Fire Hoses, Hose cabinets,
Branch Pipe
with nozzles will be placed at strategic locations as per OISD 144.
Refer attachment titled “Fire Protection and Gas Detection MATRIX” for area that
requires fire
hydrant system.
The Fire Hydrant header sizes shall be designed, as per OISD 144, for the minimum
residual pressure of 7 Kg / cm2 g at hydraulic remotest point of application in the
plant.
Fire hydrant system shall be in closed loops to ensure multidirectional flow in the
system.
Isolation valves shall be provided to enable isolation of any section of the network
without
affecting the flow in the rest. The isolation valves shall be located normally near the
loop
junction. Additional isolation valves shall be provided in the segments where, the
length of the
segment exceeds 300 Mts.
All underground mains shall be coated and wrapped as per Speciation to protect it
against soil corrosion.
Double headed hydrants, Water Monitors shall be placed 30m apart in the entire
Terminal
except in non-hazardous area, where they shall be spaced at 45m interval. Hydrant /
Monitor
stand post shall be located 15m away from the periphery of storage tank or
equipment under
protection. In case of non-hazardous buildings this distance shall not be less than 2m
and not
more than 15m. Hydrants /Monitors shall be located along road side for easy
accessibility.
Each hydrant stand pipe will be 100 mm size with two 80mm outlets for two separate
hydrant
valves. Each hydrant will be provided with a Hose Box containing 2 x 15m long fire
hose pipes
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with instantaneous coupling to IS 636 (Type A), Branch pipe with nozzle, spanner,
etc.
Monitors shall be used to protect the tanks/equipments and shall not be installed
within 15m of
hazardous equipment. The location of Monitor shall not exceed 45 m from the hazard
to be
protected. Fire water flow rate through a hydrant is considered as 36m3/hr and
through a
monitor as 144 m3/hr.
3.3. Automatically Operated Medium Velocity Water Spray System
Automatically Operated Medium Velocity Water Spray System tapped from hydrant
system
includes Pipe and Pipe Fittings, Water Spray Nozzles of suitable K factor (Nozzle
Factor), Gate
Valve, Strainer etc. The Nozzles shall be of a capacity to generate good quality water
spray at a
pressure of 1.4 to 3.5 kg /cm2. Each nozzle shall have minimum orifice of 6mm.
Water spray system shall be designed with a design density of 10.2 LPM / m2 for all
areas requiring fire spray system except product pump house /LPG
compressor house
which is designed for water spray density of 20.4 LPM / m2
Hand Appliances
The quantity and location of Potable Fire Extinguishers shall be designed as per OISD
144, 2008. Fire extinguishers shall be located at convenient locations and shall be readily
accessible
and clearly visible at all times. The maximum running distance to locate an
extinguisher shall
not exceed 15 m. The extinguisher shall be installed in such a way that
its top surface is not more than 1.5 m above floor/ground level..
4.
Fire Hydrant and Water Spray System Operation
Brief operation of fire protection system is as under
4.1. Fire Water Pumping System
All Main Fire Water Pumps along with Jockey Pump shall be kept in auto position for
its automatic operation during emergency. The jockey pump shall maintain a
minimum header pressure of 7.5 Kg/Sq. cm in the entire fire water network. Jockey
pumps shall start automatically at the 7.5 Kg/Sq. cm preset pressure and stop
automatically at the 8.8 Kg / Sq. cm. In case the demand of water is more than the
capacity of jockey pump, the header pressure (indicated by pressure switch (1W+1S)
mounted on the header) shall drop down, which will initiate the starting of the first
main diesel driven fire water pump. In case the header pressure continues to drop
down, the second main diesel driven fire water pump shall get started after a pre-set
time interval. The same philosophy shall be followed for the start of the subsequent
main fire water pumps. Each main fire water pump shall have its own control panel. A
duty selection switch provided in the control room shall determine the sequence of
triggering of the main fire water pumps. The main pump(s) shall have to be stopped
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manually. All the pumps shall be started sequentially during fire condition through the
control panel installed at Fire Water Pump House provided for each pump.
4.2. Fire Hydrant System
In the unlikely event of a fire in the terminal, one end of fire hose(s) shall be
connected to the outlet of hydrant valve and branch pipe with nozzle shall be
attached to its other end. Upon opening of the valve, water shall flow through the
hose(s) and the water jet through the nozzle shall be directed towards the seat of fire.
Depending upon the intensity of fire water monitors shall be operated. The effective
fire fighting through the trained personnel will reduce the loss.
4.3. Automatically Operated Medium Velocity Water Spray System
The water spray system shall be automatic in operation. On detection of fire through
QBD (Quartz bulb Detector), the deluge valve shall open automatically, allowing water
to flow through the spray header and eventually flooding the entire protected area from
the spray nozzles. The deluge valve shall be kept in shut position through pneumatic
actuation system
QBD the pneumatic will drop and the valve will open. The entire area of zone will be
flooded.
One deluge valve shall be provided for each zone. In case of adjoining zones
adjacent deluge
valve shall also be come into operation. The operation of deluge valve shall have
indication on fire alarm panel as well as main panel. In case saline water from the
bore well is used during emergency, the system shall be completely flushed with fresh
water.
4.4. Hand Appliances
Hand appliances like DCP (Dry Chemical Powder), Sand Bucket, CO2 are used to
extinguish
initial stage of fire. Each extinguisher shall be operated
as
per
operation
instructions given on
each extinguisher.
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