SAFETY ASPECTS IN GAS DISTRIBUTION FOR RESIDENTIAL AND DISTRIBUTION FOR RESIDENTIAL AND

COMMERCIAL CUSTOMERS

Table of ContentsTable of Contents

• Safety Responsibility

Safety Tips• Safety Tips

• What to do when there is no What to do when there is no gas supply

• Our Recommendations

SAFETY RESPONSIBILITYRESPONSIBILITY

Demarcation of ResponsibilitySafety Responsibility

Demarcation of Responsibility

1000 psig

GMB Responsibility

Building Management Responsibility

Owner Responsibility

DistributionLine

GU

OdorizerStation Feeder

Line

DistrictStation City Gate

RegulatingStation

4.3 psig

M

M

PG 260 psig 60 psigInternalPiping

M

M

Multiple Endusers/Shopping Complexes

InternalArea Station

= METERM0.43 psig

Internal Piping

M

DistributionLine

60 psig

Area Station

= METERMResidential

Responsibility by GMBSafety Responsibility

Responsibility by GMB

• GMB is responsible for main system

up to station outlet inclusive of gas

metermeter

Operations and maintenance

Odorisation

OdorisationSafety Responsibility

Odorisation

• Regulatory Requirement

Odor is added at the odoriser

stationstation

Gas shall be detectable when the

density of gas in air is 1%

Odorant InspectionSafety Responsibility

• To ensure sufficient odorant content

Odorant Inspection

is maintained

• Inspection Frequency:

Every 3 months at strategic stations

and random buildingsand random buildings

Daily monitoring at strategic

location

Safety Features of GMB SystemSafety Responsibility

Safety Features of GMB System

• Isolation valve before station

• Overpressure design in the station

• Emergency Shut-Off Valve

Responsibility by Building Safety Responsibility

Responsibility by Building Management or Owners

• Building management is responsible Building management is responsible

from station outlet to gas meter inlet

• Owner is responsible from gas meter

outlet to appliances

Safety Features of Building Safety Responsibility

y gManagement or Owners System

• Solenoid valve

• Meter valve

• Riser / shut off valve

• Gas detector

Emergency Shut Off ValveEmergency Shut Off Valve

Solenoid ValveSolenoid Valve

Meter ValveMeter Valve

Riser ValveRiser Valve

Gas DetectorSafety Responsibility

Gas Detector

Gas Detector

SAFETY TIPS

Customers shallSafety Tips

Customers shall

• Understand gas characteristics

• Aware of gas leaks

• Always inspect piping and • Always inspect piping and installation

• Always keep appliance attended

Safety Tips

• Ensure the right flame for cooking• Ensure the right flame for cooking

• Shut the appliance valve after work / pp /cooking

E d til ti f • Ensure good ventilation for appliance

• Keep good appliance maintenance

If Leakage OccursSafety Tips

• Do not turn on / off electrical switches

If Leakage OccursDo not turn on / off electrical switches

• Stop cooking – turn off appliances

• Open up windows and doors

• Conduct leak check

• Shut the relevant valve

C ll GMB (if )• Call GMB (if necessary)

In Case of Emergency / FireSafety Tips

In Case of Emergency / Fire

• Shut off the ESV / Solenoid valve

E t• Evacuate

• Call BOMBA• Call BOMBA

• Call GMB

How to Identify LeaksSafety Tips

G ll

How to Identify Leaks

• Gas smell• Hissing sound (if any)g ( y)• Presence of insects• Pressure drop• Unusual high billUnusual high bill• Conduct leak check

How to Identify LeaksHow to Identify Leaks

Use soapy solutionUse soapy solution

How to Identify LeaksHow to Identify Leaks

Leak at ConnectionsLeak at Connections

Leak at ConnectionsLeak at ConnectionsHow to Identify LeaksHow to Identify Leaks

Leak at ConnectionsLeak at ConnectionsHow to Identify LeaksHow to Identify Leaks

How to Identify Leaks

L k t d d i t ll tiLeak at corroded installation

How to Identify Leaks

L k t d d i t ll tiLeak at corroded installation

How to Identify Leaks

L k t liLeak at appliances

How to Identify Leaks

Leak at appliances

WHAT TO DO WHEN THERE IS NO GAS SUPPLYTHERE IS NO GAS SUPPLY

For tenantsWhat We Do When There is No Gas Supply

For tenants

• Check the appliance:Check the appliance:Open the knobCheck the spark

• Check the gas valve in the Check the gas valve in the kitchen

• Check the rubber hose

What We Do When There is No Gas Supply

• Check the payment status• Check the payment status

• Check the meter valveCheck the meter valve• If problem persist, contact the

b ildi t building management

For managementWhat We Do When There is No Gas Supply

For management

• Check the meter valve

• Check the riser valve• Check the riser valve

• Check the solenoid valveCheck the solenoid valve• Purge at the customer’s

liappliance

• If the problem persists, call GMB e p ob e pe s s s, ca G

OUR RECOMMENDATIONSOUR RECOMMENDATIONS

Customer shallCustomer shall

• Install safety devices:

Solenoid valveGas detector

• Engage a competent person

Our Recommendations

E t bli h i ti • Establish an inspection program

Visual inspectionVisual inspectionLeak check

Customer’s Responsibility

• Maintain piping color codes

f• Engage competent person for any piping modification

• Monitor any renovation works

GMB Emergency NumberGMB Emergency Number

THANK YOU