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Storage of Liquefied Storage of Liquefied Petroleum Gas (LPG) Petroleum Gas (LPG)

Seminar Seminar

Scope

Introduction Introduction

Characteristics of LPG Characteristics of LPG

General Checklist for LPG Manifold General Checklist for LPG Manifold SystemSystem

Conclusion Conclusion

Introduction Introduction LPG used in residential, LPG used in residential, commercial & industrial commercial & industrial premises.premises.

LPG a hazard if not properly LPG a hazard if not properly installed, handled or stored. installed, handled or stored. Examples: Over storage of Examples: Over storage of LPG cylinders, bad house LPG cylinders, bad house keeping & unsafe manner of keeping & unsafe manner of usage of LPG cylinders. usage of LPG cylinders.

LPG Manifold system LPG Manifold system introduced in 1990 introduced in 1990 --centralisedcentralised LPG cylinders. LPG cylinders.

Information of LPG Information of LPG Characteristics of LPG Characteristics of LPG

FLAMMABLEGAS

2

Mixture of propane and butaneMixture of propane and butaneColourlessColourlessOdourlessOdourlessExpansion ratio of 1: 250Expansion ratio of 1: 250LiquefiedLiquefiedHeavier than airHeavier than airHighly flammableHighly flammable

Owner’s (MCST, Town Council, etc) endorsement of approval Owner’s (MCST, Town Council, etc) endorsement of approval QP’sQP’s endorsement of LPG storage & manifold systemendorsement of LPG storage & manifold systemLocation and site planLocation and site planSchematic diagrams of LPG manifold systemSchematic diagrams of LPG manifold systemPlan and elevation views with following details: Plan and elevation views with following details:

All LPG cylinders installations shall be All LPG cylinders installations shall be approved by SCDF. approved by SCDF.

LPG plans submitted for approval shall LPG plans submitted for approval shall include the following items: include the following items:

General Requirements General Requirements

Location, quantity and capacity (in kg) of LPG cylindersLocation, quantity and capacity (in kg) of LPG cylindersLocation of ancillary fixtures & fittings, Location of ancillary fixtures & fittings, egeg. . VapouriserVapouriserHousing for LPG cylinders, Housing for LPG cylinders, egeg. cabinet . cabinet All openings and exits adjacent to LPG installationAll openings and exits adjacent to LPG installationLocation of hydrant, access way, access road, etcLocation of hydrant, access way, access road, etcFire safety provision, Fire safety provision, egeg. Fire hose reel. Fire hose reel

General Requirements General Requirements Sample of LPG Plan Sample of LPG Plan –– Floor Plan Floor Plan

FSSD Endorsement

HDB / Town Council / Building OwnerEndorsement

Tenant / Applicant

QP Endorsement

Project Title

Prior to any LPG manifold system installation, Prior to any LPG manifold system installation, plan approval must be obtained from SCDF. plan approval must be obtained from SCDF.

Upon completion of LPG installation, installed Upon completion of LPG installation, installed system must be checked by Registered system must be checked by Registered Inspector (RI), prior to application of Fire Inspector (RI), prior to application of Fire Safety Certificate (FSC). Safety Certificate (FSC).

Can only start operating LPG manifold Can only start operating LPG manifold system after the appropriate approvals are system after the appropriate approvals are obtained. obtained.

General Requirements General Requirements

LPG Manifold SystemLPG Manifold System

Inside the buildingOutside the building

CabinetPig Tail Assembly

Yellow Pipe Line – Vapour LPG

Blue Pipe Line – Liquid LPG

Auto change over valve

Outside the building

1

Vapouriser Regulator

Regulator

2

Outside the building

Overpressure Protection Device

Knock-out Pot

3

Outside the building

Emergency Shut-off Valve (ESV)

Fire Extinguisher

4

Outside the building

Cabinet

Vapouriser

Regulator

Regulator

Pig Tail Assembly

Knock-out Pot

Emergency Shut-off Valve (ESV)

Fire Extinguisher

Yellow Pipe Line – Vapour LPG

Blue Pipe Line – Liquid LPG

Auto change over valve

Outside the building

Overpressure Protection Device

5

Inside the building

Gas Meter

Down Pipe to Consumption Point

LPG Manifold System Requirements LPG Manifold System Requirements (LPG Cabinet) (LPG Cabinet)

LPG Technical Requirements

LPG Manifold System Checks (LPG Cabinet) Y N Remarks

LPG cylinders is housed in steel (non-corroded) cabinet.

The cabinet is placed directly on a firm floor.

The cabinet is adequately ventilated with openings at the bottom of the cabinet.

Back of LPG cabinet is fully enclosed.

No additional (unauthorised) storage of LPG cylinders around the LPG cabinet at all times

LPG cabinet is properly labeled with the hazard warning sign.

LPG cabinet is locked at all times.

LPG cabinet is always be kept free of any combustible materials.

CChecklist

hecklist

LPG cylinders shall be housed in a LPG cylinders shall be housed in a steel cabinet. steel cabinet.

The cabinet shall be placed directly The cabinet shall be placed directly on a firm floor.on a firm floor.

The cabinet shall be adequately The cabinet shall be adequately ventilated with openings at the ventilated with openings at the bottom of the cabinet.bottom of the cabinet.

The back of the LPG cabinet should The back of the LPG cabinet should be fully enclosed. be fully enclosed.

LPG Cabinet LPG Cabinet

Requirements Requirements Purpose Purpose –– To store LPG cylinders To store LPG cylinders

LPG cabinet should always be kept LPG cabinet should always be kept free of any combustible material. free of any combustible material.

No additional (No additional (unauthorisedunauthorised) storage ) storage of LPG cylinders around the LPG of LPG cylinders around the LPG cabinetcabinet

LPG cabinet should be locked at all LPG cabinet should be locked at all times. times.

LPG Cabinet LPG Cabinet Requirements Requirements

LPG Cabinet LPG Cabinet Requirements Requirements

LPG Cabinet should be properly labeled with the hazard warningLPG Cabinet should be properly labeled with the hazard warning sign. sign.

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LPG Cabinet LPG Cabinet Violations Violations

Without LPG cabinetWithout LPG cabinet Corroded cabinetCorroded cabinet

LPG Cabinet LPG Cabinet Violations Violations

UnauthorisedUnauthorised storage of storage of LPG cylindersLPG cylinders

““Illegal” additional Illegal” additional connection connection

Storage of Combustible materials Storage of Combustible materials around the LPG cabinet around the LPG cabinet

Unenclosed back side of the Unenclosed back side of the LPG CabinetLPG Cabinet

LPG Cabinet LPG Cabinet Violations Violations

LPG Manifold System Requirements LPG Manifold System Requirements (Pig Tail Assembly) (Pig Tail Assembly)

LPG Technical Requirements

LPG Manifold System Checks (Pig Tail Assembly) Y N Remarks

Tee-check valves are in good condition.

Flexible hoses are in good condition.

CChecklist

hecklist

The flexible hose or tube, a teeThe flexible hose or tube, a tee--check valve and a ball valve check valve and a ball valve should be in good working conditions.should be in good working conditions.

Pig Tail Pig Tail Purpose Purpose –– To facilitate the flow of LPG from To facilitate the flow of LPG from

LPG cylinders to LPG piping system LPG cylinders to LPG piping system Requirements Requirements

Pig Tail Pig Tail Violations Violations

Cracks / Stripes on Hose Cracks / Stripes on Hose due to wear and teardue to wear and tear

Corroded Pig Tail assemblyCorroded Pig Tail assembly

LPG Manifold System Requirements LPG Manifold System Requirements ((VaporiserVaporiser) )

LPG Technical Requirements

LPG Manifold System Checks (Vaporiser) Y N Remarks

Vaporizer is not installed inside the building

Vaporizer is not installed inside compartment or same housing ofLPG cylinder

Vaporizer is of at least 1.8 m height

CChecklist

hecklist

Vaporizer Vaporizer Purpose Purpose –– To covert liquid LPG into gaseous state To covert liquid LPG into gaseous state

RequirementsRequirements

Shall Shall notnot be installed be installed inside the buildinginside the building

Shall Shall not not be installed be installed inside the steel inside the steel cabinetcabinet or or within the same housingwithin the same housing of the of the LPG cylinders.LPG cylinders.

WallWall--mounted vaporizersmounted vaporizers shall be at least shall be at least 1.8 m above1.8 m above the ground.the ground.

Vaporizer Vaporizer Violations Violations

Installing Installing vaporiservaporiser inside the inside the buildingbuilding

Installing Installing vaporiservaporiser inside the inside the cabinetcabinet

LPG Manifold System Requirements LPG Manifold System Requirements (Knock(Knock--out Pot) out Pot) LPG Technical Requirements

LPG Manifold System Checks (Knock-out Pot) Y N Remarks

Knock-out pot is installed

Drain valve of the Knock-out pot ends at the ground level and plugged at the end

At least 2 drain valves are installed at the Knock-out pot

CChecklist

hecklist

Purpose Purpose –– To filter off / collect heavy ends, residue & To filter off / collect heavy ends, residue & impurities in the LPG. impurities in the LPG.

At least 2 drain valves At least 2 drain valves Drain shall end at ground level and plugged at the endDrain shall end at ground level and plugged at the end

Drain valve Drain valve (open (open position position ––valve valve parallel to parallel to the pipe) the pipe)

KnockKnock--out Potout Pot

Drain valve Drain valve (close (close position position ––valve 90valve 90°°to the pipe) to the pipe)

RequirementsRequirements

Missing KnockMissing Knock––out Potout Pot Missing drain valve & drain did Missing drain valve & drain did not end at groundnot end at ground

KnockKnock--out Potout PotViolations Violations

LPG Technical Requirements

LPG Manifold System Checks (Emergency Shut Off Valve) Y N Remarks

Emergency Shut Off Valve is installed after Knock-out Pod

Proper and complete installation of Emergency Shut Off Valve

Proper label of Emergency shut-off valve box

LPG Manifold System Checks (Fire Extinguisher) Y N Remarks

At least 1 x B:C rating dry chemical fire extinguisher (of 9kg) is in working condition

Fire Extinguisher is mounted on wall

Remote Emergency shut-off valve is installed at safe distance away from the edge of installation

LPG Manifold System Requirements LPG Manifold System Requirements (Emergency Shut Off Valve & (Emergency Shut Off Valve &

Fire Extinguisher) Fire Extinguisher)

CChecklist

hecklist

Emergency ShutEmergency Shut--off Valve off Valve Purpose Purpose -- A shutoff valve that provides for remote means of A shutoff valve that provides for remote means of

shutting off the gas supply in case of emshutting off the gas supply in case of emergency.ergency.

RequirementsRequirements

Installed after KnockInstalled after Knock--out Potout PotLinked to a release mechanism so that the valve can be Linked to a release mechanism so that the valve can be closed from a safe distance from the edge of the installationclosed from a safe distance from the edge of the installationProper and complete installationProper and complete installationProper labeling of Emergency ShutProper labeling of Emergency Shut--off Valve box off Valve box

Emergency ShutEmergency Shut--off Valve off Valve Violations Violations

UnauthorisedUnauthorisedstorage in ESV box storage in ESV box Incorrect Incorrect labellinglabelling

Incomplete installation Incomplete installation ESV box installed on ESV box installed on LPG cabinetLPG cabinet

Emergency ShutEmergency Shut--off Valve off Valve Violations Violations

NonNon--connecting ESV connecting ESV

Emergency ShutEmergency Shut--off Valve off Valve Violations Violations

NonNon--connecting ESV box connecting ESV box

Fire Extinguisher Fire Extinguisher Purpose Purpose –– For fire fighting from a safe distanceFor fire fighting from a safe distance

RequirementsRequirements

At least one approved At least one approved portable portable B:C rating dry B:C rating dry chemical fire extinguisherchemical fire extinguisher with with minimum capacity of minimum capacity of 9 kg9 kg (in (in working condition) shall be working condition) shall be provided provided

Fire extinguisher mounted on Fire extinguisher mounted on wallwall

Fire ExtinguisherFire ExtinguisherViolations Violations

““Expired” Fire Extinguisher Expired” Fire Extinguisher ““Missing” Fire Extinguisher Missing” Fire Extinguisher

ConclusionConclusion

yProper installations of LPG manifold system, coupled with regular and proper maintenance program for the system can go a long way to ensure safety of such system.

Thank You