ytl powerseraya handbook on gas supply · handbook shall mean this handbook on gas supply; internal...

YTL PowerSeraya

Handbook on Gas Supply

Apr 2016

Contents 1 General Information ........................................................................................................................ 1

1.1 Background ......................................................................................................................... 1

1.2 Gas Supply System Overview ............................................................................................. 1

1.3 Definitions .......................................................................................................................... 2

1.4 Contact Details ................................................................................................................... 3

1.5 Professional Engineer and Licensed Gas Service Worker................................................... 4

1.6 Handbook, Standard Operating Procedures and Regulatory Requirements ..................... 4

1.7 Regulated Tariffs................................................................................................................. 5

2 Procedure for Gas Supply and Connection (New Premises) ........................................................... 6

2.1 Preliminary Assessment ..................................................................................................... 6

2.2 For Transmission Consumers ............................................................................................. 7

2.2.1 Application for Gas Supply and Connection and Site Survey .............................. 7

2.2.2 Notification to Consumers on the Project Cost .................................................. 7

2.2.3 Construction of the Gas Fitting (from the GSIV to the Meter Installation) by the

Gas Transporter .................................................................................................. 8

2.2.4 Construction of the Gas Fitting (from the GSIV to the Meter Installation) by

Consumer ............................................................................................................ 9

2.2.5 Consumer to Proceed with Construction of Gas Installation (from outlet valve

of the Meter Installation to the Consumer's Gas Appliance) ........................... 10

2.2.6 Application of Gas Turn-On ............................................................................... 10

2.3 For Distribution Consumers ............................................................................................. 12

2.3.1 Application for Gas Supply and Connection and Site Survey ............................ 12

2.3.2 Notification to Consumers on the Project Cost ................................................ 12

2.3.3 Construction of the Gas Fitting (from the GSIV to the MPRS) .......................... 13

2.3.4 Construction of Gas Installation (from outlet valve of the MPRS to the

Consumer's Gas Appliance)............................................................................... 13

2.3.5 Application and Approval of Turn-On of Gas .................................................... 13

3 Procedures for Replacement, Addition and Alteration of Gas Fittings and Appliances ............... 14

4 Gas Supply Termination/Disconnection ........................................................................................ 15

5 Gas Supply Interruptions and Restoration .................................................................................... 16

5.1 Interruption due to Gas Leak ........................................................................................... 16

5.2 Interruption of Gas Flow .................................................................................................. 16

Apr 2016

5.3 Restoration of Gas Flow ................................................................................................... 16

Appendix A: Overview of Application for Gas Connection / Gas Supply / Disconnection /

Discontinuation for Distribution Consumers ........................................................................................ 17

Appendix B: Transmission Connection Flowchart ................................................................................ 18

Appendix D: Transmission Connection Forms From Gas Transporter .................................................. 22

Appendix E: Distribution Connection Forms From Gas Transporter .................................................... 23

Appendix F: Standard DR Forms for Consumer .................................................................................... 24

Appendix G: Demarcation of Responsibility of Gas Service Work of Single / Multiple Retail Consumers

.............................................................................................................................................................. 25

Appendix H: Natural Gas Safety Information ........................................................................................ 26

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1 General Information

1.1 Background

YTLPS's power generation and electrical retail business has a licensed generating capacity of

3,100MW, and sits on Jurong Island – Singapore’s oil, gas and petrochemicals hub.

Through YTLPS's four key business activities – utilities services, energy markets, physical oil trading

and storage tank leasing, as well as energy retailing – YTLPS focuses on providing energy solutions to

its customers by anticipating their needs that span across a wide spectrum of energy retailing and

energy market activity.

YTLPS has a proven in-depth understanding of the relationships linking the electricity generation

market, electricity retail market, wholesale electricity market and the fuel market. These four areas

of YTLPS's businesses have been successful in bringing out each other’s strengths and playing

complementary roles to deliver outstanding results and value to the shareholders.

YTLPS became a natural gas retailer in April 2015, which complements the company’s multi-utilities

offering to customers. Industrial customers who use natural gas for electricity generation, boiler and

water heating now have an alternative retailer who is able to offer a one-stop bundled solution

(electricity, gas and steam) to help them manage the cost of business operations.

1.2 Gas Supply System Overview Natural gas is imported from Indonesia, Malaysia and re-gasified LNG and supplied to consumers

through high pressure (transmission) and medium pressure (distribution) networks. The supply

pressure of the high pressure network is around 40 barg and 28 barg, while that of the medium

pressure network is around 4 or 8 barg for premises in Jurong Island. The network pressure to

consumers in Tuas and Jurong is around 3 barg, while the delivery pressure to consumers is around 1

to 2.5 barg. Any consumer requiring pressure higher than the network operating pressure shall

install the necessary equipment to achieve the required pressure at consumer’s own cost. A list of

Singapore’s natural gas specifications can be found at EMA’s website at www.ema.gov.sg.

Consumers enquiring about connection and supply of gas, replacement, addition and alteration of

Gas Installations can refer to this Handbook as a general guide. This Handbook should be read in

conjunction with the Gas Act, Gas (Supply) Regulations, Gas Supply Code and all other relevant

regulations, codes and standards.

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1.3 Definitions The following terms shall have the following meanings when used in this Handbook:

Check Meter shall mean any additional device which is required to be used to verify the readings

taken by a Meter;

Designated Representative (DR) shall mean (i) a Professional Engineer or (ii) a Licensed Gas Service

Worker (where the relevant work is permitted by the Regulatory Requirements to be performed by a

Licensed Gas Service Worker);

EMA shall mean the Energy Market Authority;

Firm Capacity shall mean the maximum authorised volume of gas that can be conveyed through the

gas networks to consumer’s premises;

Gas Appliance shall mean any appliance in which gas is consumed, either for domestic requirements

(including for cooking, heating or cooling purposes) or for industrial or commercial requirements

(including for powering a gas engine or as feedstock in a chemical process);

Gas Fitting shall mean any pipe, valve, Meter, regulator or other device for the control,

measurement and use of gas;

Gas Installation shall mean a discrete grouping of Gas Fittings linking a Gas Service Pipe to a Gas

Appliance;

Gas Main shall mean any gas pipe used for the distribution of gas from a Gas Transmission Pipeline

to a consumer but does not include a Gas Service Pipe or an Internal Pipe;

GSA shall have the meaning given to it in Section 2.2.2;

Gas Service Isolation Valve (GSIV) shall mean a valve, located at or near the boundary line of any

property or the apron of any building, used by the Gas Transporter to isolate the supply of gas to

that property or building;

Gas Service Pipe shall mean a pipe or any part thereof, other than a Gas Main, used for the purpose

of conveying gas from a Gas Main to a Gas Service Isolation Valve, and includes any pipe owned by,

or under the management or control of, a Gas Transporter which is used for the purpose of

conveying gas from the Gas Service Isolation Valve to the Meter at a consumer’s premises;

Gas Service Work shall mean any work carried out on any Gas Installation or Gas Appliance, in whole

or in part, including any design, construction, installation, commissioning, erection, testing, repair,

addition, alteration or maintenance work;

Gas Transmission Pipeline shall mean a bulk transmission pipeline or interconnected transmission

pipeline, together with equipment (including pressure regulating and control valves) used for the

conveyance of gas to a direct access consumer or a Gas Mains network;

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Gas Transporter shall mean PowerGas Ltd;

Handbook shall mean this Handbook on Gas Supply;

Internal Pipe shall mean any and all pipes, not being a gas pipeline, used for the purpose of

conveying gas from a Gas Service Pipe to a Gas Appliance, including a Gas Fitting inserted therein but

excluding a Meter;

Interruption shall mean gas flow issues like gas leak, gas incidents, gas curtailment by importer

and/or transporter, etc;

Licensed Gas Service Workers (LGSW) shall mean a person who is licensed under section 12(3) of

the Gas Act;

Meter shall mean any device for computing the volume of gas supplied or amount of energy

supplied, for charging purposes, but does not include a Check Meter;

Meter Installation shall mean any meter and its associated equipment and installation, including any

associated pipework, filter, valve, pressure regulating equipment, seal, housing, mounting, telemetry

equipment and gas chromatograph if applicable;

MPRS shall mean the metering and pressure regulating skid;

Professional Engineer (PE) shall mean a person who is registered as a professional engineer in the

mechanical engineering discipline under the Professional Engineers Act (Cap. 253);

Regulatory Requirements shall have the meaning given to it in Section 1.6; and

YTLPS shall mean YTL PowerSeraya Pte Ltd.

1.4 Contact Details

In case of natural gas leak for

transmission and distribution

networks or other emergencies

PowerGas Senoko CCR 1800 752 1800 (24 hours)

In case of natural gas flow issues YTLPS CCR 6890 4711 (24 hours)

For gas connection and billing

issues

YTLPS Consumer Service 6622 6200 (8 am to 5:30 pm,

Mondays to Fridays, excluding

public holidays)

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1.5 Professional Engineer and Licensed Gas Service Worker All Gas Service Work shall be carried out by a Designated Representative, namely a Professional

Engineer with a valid practising certificate in the mechanical engineering discipline or a Licensed Gas

Service Worker who holds a valid Gas Service Worker license.

The PE or LGSW shall be responsible for designing and constructing the Gas Installation from the

GSIV or the outlet valve of the Meter Installation to the Gas Appliance in full compliance with the

Regulatory Requirements. If a PE is engaged for the Gas Service Work, the work can be performed by

or be conducted by an LGSW under the supervision of the PE.

Submission of plans for Gas Installation pipework and addition and alteration work shall be carried

out by a PE. An LGSW may submit plans for (i) Gas Installation pipework to existing individual landed

houses, (ii) all retail consumers' Internal Pipe, including the Meter, of existing multi-storey

apartments or similar developments, and (iii) all retail consumers’ Internal Pipe, including the Meter,

of existing commercial and industrial premises. Where any of the above mentioned works is meant

for operating pressures above 30 mbars or involves a gas booster system, gas leakage detection

system incorporating solenoid valve or welded steel pipe joints or specialised gas equipment not

used for cooking purposes, plans for the Gas Service Works shall be submitted by a PE.

The PE must endorse his plans and confirm / certify that the submission complies with the

Regulatory Requirements. These plans will then be used for application for gas admittance and gas

turn-on.

A list of registered LGSWs can be obtained from EMA’s website at www.ema.gov.sg.

1.6 Handbook, Standard Operating Procedures and Regulatory

Requirements The design of the Gas Installation or part and the Gas Service Work being carried out on the Gas

Installation, must comply with the requirements of this Handbook, the Standard Operating

Procedures for Gas Connection of the Gas Transporter and the latest revision of the following

(collectively, the "Regulatory Requirements"): -

Gas Act (Cap 116A);

Gas (Supply) Regulations;

Gas Supply Code;

Gas Metering Code;

Code of Practice for Gas Installation, Singapore Standard, SS 608: 2015; and

All relevant acts, regulations and codes of practice.

A PE/LGSW, applying on behalf of the consumer for the supply of gas, must ensure that the above

requirements are followed.

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1.7 Regulated Tariffs

Transportation tariffs are determined by the Gas Transporter and are reviewed by the EMA from

time to time. Further details on the tariffs may be obtained from Singapore Power’s website at

www.singaporepower.com.sg.

(1) Charges for consumers who are connected to the transmission network:

The charges consist of transmission usage charge and transmission capacity charge. If the actual

offtake quantity is above the Firm Capacity, then overrun charges will apply.

(2) Charges for consumers who are connected to the distribution network:

The charges consist of both transmission usage charge, transmission capacity charge and distribution

charge. If the actual offtake quantity is above the Firm Capacity, then overrun charges will apply.

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2 Procedure for Gas Supply and Connection (New Premises)

2.1 Preliminary Assessment

Consumers can make an enquiry by calling 6622 6200 during office hours or send an enquiry via

Seraya Energy’s website (http://www.serayaenergy.com.sg/contact-us). Information required:

Company Name

Address of premise

Consumer type (e.g. residential, non-residential)

Consumer with existing gas connection [Yes and if so, which network / No]

Transmission or Distribution connection

Gas usage purpose (e.g. electricity generation, boiler, cooking, water heating, etc)

Average consumption per day (mmbtu per day)

Minimum pressure required (Barg)

Expected date of supply

Interruptible supply or non-interruptible supply

YTLPS will follow up on the enquiry and arrange for connection assessment. If the consumer’s

premises are within the gas network connection zone, the consumer will then be required to appoint

a Designated Representative who will liaise directly with YTLPS on all matters relating to the Gas

Installation. The DR shall ensure that the Gas Installation is designed, constructed, tested and

commissioned in accordance with the Regulatory Requirements. The DR shall also endorse all

drawings, documents, applications and submissions in relation to the Gas Installation.

A flowchart on the application procedures for transmission consumers is attached in Appendix B:

Transmission Connection Flowchart and the flowchart for distribution consumers are attached in

Appendix C: Distribution Connection Flowchart. The relevant forms as mentioned in the procedures

below are attached in Appendix D: Transmission Connection Forms From Gas Transporter,

Appendix E: Distribution Connection Forms From Gas Transporter and Appendix F: Standard DR

Forms for Consumer.

For connection to medium pressure natural gas distribution network, typically a lead time of 18 to

20 weeks is required to fabricate, deliver, install and commission the MPRS (Metering and Pressure

Reduction Skid). For connection to town gas network, typically a lead time of 6 to 8 weeks is

required to apply for and obtain services’ plans and opening permit from the relevant authorities /

agencies before excavation, pipe laying and connection works could commence.

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2.2 For Transmission Consumers

2.2.1 Application for Gas Supply and Connection and Site Survey

The consumer must first submit Form GTP102 [Consumer Project Data Sheet]. There will be a

feasibility study and site survey conducted with the DR, YTLPS and the Gas Transporter’s

representative to discuss about the entry point at the consumer’s premises, location of the Meter

Installation, the distance of connection pipelines and the project evaluation. The consumer is then

required to submit Forms DR01 [Application for Gas Supply / Disconnection / Discontinuation], DR02

[Submission of Plan & Specification], DR03 [Designated Representative Declaration Form] and

GTP101 [Application for Gas Transmission Connection] with the following information:

(i) 3 sets of location / site plans showing the proposed site and connection point;

(ii) Pipe route from property boundary to the Meter Installation; and

(iii) Location of the Meter Installation.

If the applicant of Form DR01 [Application for Gas Supply / Disconnection / Discontinuation] is not

the owner of the Gas Installation, the applicant has to obtain and submit the written consent of the

responsible person for such Gas Installation to be used for the supply.

All proposed Gas Installation drawings / plans which are submitted together with Forms DR01

[Application for Gas Supply / Disconnection / Discontinuation], DR02 [Submission of Plan &

Specification] and GTP101 [Application for Gas Transmission Connection] must be duly endorsed by

the DR and submitted to YTLPS. This submission will not cover the compliance and engineering

design checks and the DR has to check, ensure and confirm/certify that the submission and all Gas

Service Works are in compliance with the Regulatory Requirements.

After the submission is processed, the consumer will be informed of the outcome. YTLPS will then

follow up to submit the completed forms to the Gas Transporter. The Gas Transporter will reply

within 30 calendar days upon receipt of the submission from YTLPS on the availability of pipeline

capacity.

2.2.2 Notification to Consumers on the Project Cost

If there is sufficient pipeline capacity, the consumer will be informed of the approval, and the Gas

Transporter will provide the applicable connection charge and the estimated project lead time

through YTLPS. YTLPS will then furnish this information together with Form RR01 [Response letter to

Consumer’s Application] to the consumer. Once the consumer has accepted the project cost and

lead time, the Gas Sales Agreement (“GSA”) will be executed.

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the Gas Transporter

The procedures in the steps below are only applicable in the event that the Gas Transporter designs

and constructs the Gas Fitting from, but excluding, the GSIV up to and including the Meter

Installation.

Upon execution of the Gas Sales Agreement between YTLPS and the consumer, YTLPS will confirm

the project with the Gas Transporter who will then commence construction of the Gas Fitting from

the GSIV up to and including the Meter Installation once relevant documentation is in place.

When the Gas Fitting from the GSIV to the Meter Installation is ready to receive gas, the DR is

required to notify all relevant parties, including but not limited to, the responsible person,

owner/developer, main contractor, sub-contractors, architect, engineer, suppliers and vendors, that

gas will be admitted into the Gas Installation. Also, the DR is to ensure that the Gas Installation is

not tampered with and hot works in the vicinity of the Gas Installation are carried out with all

necessary safety precautions.

Once the Gas Fitting and Meter Installation are ready to receive gas, the DR shall submit GTP105A

[Application for Admittance of Gas (Meter by Others)] and GTP108A [Certification of Completion

(GSIV to Meter)], requesting the Gas Transporter for admittance of gas up to the outlet valve of the

Meter Installation.

The DR is to submit Form DR04 [Notification of Final Pressure Test] to YTLPS prior to conducting the

final pressure test. Once the installation has passed the final pressure test, the DR shall certify on

the Forms GTP109A [Certification of Final Pressure Test (GSIV to Meter)] and DR05 [Certificate of

Final Pressure Test].

The DR will conduct the necessary proof test and after completion of the test, submit Form

GTP110A [Certificate of Proof Test (GSIV to Meter)] to the Gas Transporter and Form DR07

[Certificate of Proof Test] to YTLPS.

The DR must also ensure that all plugs, caps and other ends of the installation are affixed with

warning labels marked ‘Live Gas. Do Not Tamper!’. After the proof test on the Gas Installation, no

one is allowed to carry out any further work without prior written approval from YTLPS. Any further

work on the Gas Installation will render the proof test null and void. If any further work has to be

carried out, a new application for the work shall be made together with the plans.

Upon completion of the proof test, if the gas supply is not turned on and the consumer’s Internal

Pipe including the Meter Installation is left unattended, the DR must ensure that the Meter is

removed or a spool is placed at the gas pipe which is connected to the relevant Meter Installation to

prevent any flow of gas into the Gas Installation. The tests must be conducted again before turning

on the gas supply.

The Gas Transporter will then connect the Gas Fitting to the Gas Transmission Pipeline and

preliminarily admit gas into the Gas Fitting up to and excluding the Meter Installation. Upon

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successful admittance of gas up to and excluding the Meter Installation, the Gas Transporter will

issue Form GTP106A [Statement of Interim Admittance of Gas] and the DR shall proceed to purge

and commission up to, and excluding, the Meter Installation. The Meter Installation will be purged

and commissioned by the Gas Transporter, following which the Gas Transporter will then issue Form

GTP106 [Statement of Admittance of Gas].


Consumer

The procedures in the steps below are only applicable in the event that a DR (engaged by a

consumer) designs and constructs the Gas Fitting from, but excluding, the GSIV up to and including

the Meter Installation.

Upon execution of the Gas Sales Agreement between YTLPS and the consumer, YTLPS will confirm

the project with the Gas Transporter.

When the Gas Fitting from the GSIV to the Meter Installation is ready to receive gas, the DR is

required to notify all relevant parties, including but not limited to, the responsible person,

owner/developer, main contractor, sub-contractors, architect, engineer, suppliers and vendors, that

gas will be admitted into the Gas Installation. Also, the DR is to ensure that the Gas Installation is

not tampered with and hot works in the vicinity of the Gas Installation are carried out with all


Once the Gas Fitting and Meter Installation are ready to receive gas, the DR shall then submit Forms

GTP105A [Application for Admittance of Gas (Meter by Others)] and GTP108A [Certification of

Completion (GSIV to Meter)], requesting the Gas Transporter for admittance of gas up to the outlet

valve of the Meter Installation.

The DR is to submit Form DR04 [Notification of Final Pressure Test] to YTLPS prior to conducting the

final pressure test. Once the installation has passed the final pressure test, the DR shall certify on

the Forms GTP109A [Certification of Final Pressure Test (GSIV to Meter)] and DR05 [Certificate of

Final Pressure Test].

The DR will conduct the necessary proof test and after completion of the test, submit Form GTP110A

[Certificate of Proof Test (GSIV to Meter)] to the Gas Transporter and Form DR07 [Certificate of Proof

Test] to YTLPS.




work on the Gas Installation will render the proof test null and void. If any further work has to be

carried out, a new application for the work shall be made together with the plans.

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on the gas supply.

The Gas Transporter will then connect the Gas Fitting to the Gas Transmission Pipeline and

preliminarily admit gas into the Gas Fitting up to and excluding the Meter Installation. Upon

successful admittance of gas up to and excluding the Meter Installation, the Gas Transporter will

issue Form GTP106A [Statement of Interim Admittance of Gas] and the DR shall proceed to purge

and commission up to, and including, the Meter Installation, following which the Gas Transporter

will then issue Form GTP106 [Statement of Admittance of Gas].

2.2.5 Consumer to Proceed with Construction of Gas Installation (from outlet

valve of the Meter Installation to the Consumer's Gas Appliance)

The DR is required to liaise with YTLPS in respect of the construction of Gas Installation from outlet

valve of the Meter Installation to the Gas Appliance at the consumer’s premises. The DR shall

ensure that the Gas Installation is constructed in accordance with the plan approved for construction

and in full compliance with the Regulatory Requirements. Prior written consent must be sought from

YTLPS for plans which deviate from the original plan approved for construction. Such requests will

be sent to the Gas Transporter for approval.

2.2.6 Application of Gas Turn-On

When the construction of the Internal Pipe from outlet valve of the Meter Installation to the Gas

Appliance is completed, the DR is required to notify YTLPS using Form DR04 [Notification of Final

Pressure Test] before conducting the final pressure test. Once the installation has passed the final

pressure test, the DR shall certify on Form GTP109 [Certificate of Final Pressure Test (Consumer’s

Internal Pipe)] and Form DR05 [Certificate of Final Pressure Test].

Once the consumer’s Internal Pipe from outlet valve of the Meter Installation up to the Gas

Appliances is ready to receive gas, the DR is required to submit Form GTP108 [Certificate of

Completion (Consumer’s Internal Pipe)]. Forms GTP107 [Application for Gas Turn-On] and DR06

[Request for Turn-on / Re-commissioning of Gas Supply] shall be submitted once the consumer’s

Internal Pipe from the Meter Installation up to the Gas Appliances is ready to receive gas.

The DR will then conduct the necessary proof test and submit Form GTP110 [Certificate of Proof Test

(Consumer’s Internal Pipe)] to the Gas Transporter and Form DR07 [Certificate of Proof Test] to

YTLPS after completion of the test.

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work on the installation will render the proof test null and void. If any further work has to be carried

out, a new application for the work shall be made together with the plans.





on the gas supply.

The DR is required to notify all relevant parties, including but not limited to, the responsible person,

owner / developer, main contractor, sub-contractors, architect, engineer, suppliers and vendors,

that gas will be admitted into the Gas Installation. Also, the DR is to ensure that the Gas Installation

is not tampered with and hot works in the vicinity of the Gas Installation are carried out with all


Upon successful interim gas turn-on, the Gas Transporter shall issue Form GTP111 [Statement of

Interim Turn-On] and the DR shall then proceed to purge and commission the consumer’s Internal

Pipe up to the Gas Appliance.

The Gas Transporter will then issue Form GTP112 [Statement of Turn-On] upon certification by the

DR of successful purging and commissioning of the consumer’s Internal Pipe. The DR is required to

submit Forms DR08 [Acknowledgement of Turn-on / Re-commissioning of Gas Supply], DR09

[Certificate of Conformity for Gas Appliance] and DR10 [Statement of Safe for Use] to YTLPS.

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2.3 For Distribution Consumers

2.3.1 Application for Gas Supply and Connection and Site Survey

The consumer must first submit Form GDP102 [Consumer Project Data Sheet]. There will be a

feasibility study and site survey conducted with the DR, YTLPS and the Gas Transporter’s

representative to discuss the entry point at the consumer’s premises, the location of the MPRS, the

distance of connection pipelines and the project evaluation. The consumer is then required to

submit Forms GDP101 [Application for Gas Distribution Connection], DR01 [Application for Gas

Supply / Disconnection / Discontinuation], DR02 [Submission of Plan & Specification] and DR03

[Designated Representative Declaration Form] with the following information:

(i) 3 sets of location / site plans showing the proposed site and connection point;

(ii) Pipe route from property boundary to the MPRS; and

(iii) Location of the MPRS.

If the applicant of Form DR01 [Application for Gas Supply / Disconnection / Discontinuation] is not

the owner of the Gas Installation through which gas is to be supplied, the applicant has to obtain and

submit the written consent of the responsible person for such Gas Installation to be used for the

supply.

All proposed Gas Installation drawings / plans which are submitted together with Forms GDP101

[Application for Gas Distribution Connection], DR01 [Application for Gas Supply / Disconnection /

Discontinuation] and DR02 [Submission of Plan & Specification] must be duly endorsed by the DR

and submitted to YTLPS. This submission does not cover compliance and engineering design checks

and the DR has to check, ensure and confirm/certify that the submission and all Gas Service Work

are in compliance with the Regulatory Requirements. YTLPS will submit the completed forms to the

Gas Transporter, on behalf of the consumer. The Gas Transporter will reply within 14 calendar days

upon receipt of such requests from YTLPS.

2.3.2 Notification to Consumers on the Project Cost

Once the Gas Transporter has reverted to YTLPS with details on the project cost and lead time, YTLPS

will notify the consumer on the applicable connection charge and the estimated project lead time

with Form RR01 [Response letter to Consumer’s Application]. Once the consumer has accepted the

project cost and lead time, the GSA will be executed.

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2.3.3 Construction of the Gas Fitting (from the GSIV to the MPRS)

Upon execution of the GSA between YTLPS and the consumer, YTLPS will confirm the project with

the Gas Transporter. The Gas Transporter will then commence design and construction of the Gas

Fitting from the GSIV up to and including the MPRS, once relevant documentation is in place.

When the Gas Fitting from the GSIV to the MPRS is ready to receive gas, the DR is required to notify

all relevant parties, including but not limited to, the responsible person, owner / developer, main

contractor, sub-contractors, architect, engineer, suppliers and vendors, that gas will be admitted

into the Gas Installation. Also, the DR is to ensure that the Gas Installation is not tampered with and

hot works in the vicinity of the Gas Installation are carried out with all necessary safety precautions.

2.3.4 Construction of Gas Installation (from outlet valve of the MPRS to the

Consumer's Gas Appliance)

The DR is required to liaise with YTLPS in respect of the construction of Gas Installation from outlet

valve of the MPRS to the Gas Appliance at the consumer’s premises. The DR shall ensure that the

Gas Installation is constructed in accordance with the plan approved for construction and in full

compliance with the Regulatory Requirements. Prior written consent must be sought from YTLPS for

plans which deviate from the original plan approved for construction. Such requests will be sent to

the Gas Transporter for approval.

2.3.5 Application and Approval of Turn-On of Gas

When the construction of the pipes from outlet valve of MPRS to the Gas Appliance is completed,

the DR is required to certify Form GDP106 [Certificate of Completion] and notify YTLPS using Form

DR04 [Notification of Final Pressure Test] before conducting the final pressure test. Once the Gas

Installation has passed the final pressure test, the DR shall certify on Forms GDP107 [Certificate of

Final Pressure Test] and DR05 [Certificate of Final Pressure Test].

The DR is to submit Form DR06 [Request for Turn-on / Re-commissioning of Gas Supply] and Form

DR05 [Certificate of Final Pressure Test] to YTLPS and Forms GDP105 [Application for Admittance of

Gas], GDP106 [Certificate of Completion] and GDP107 [Certificate of Final Pressure Test] to the Gas

Transporter requesting for admittance of gas into the Gas Installation up to, but excluding, the

Meter Installation. The DR will then conduct the necessary proof test and complete Forms DR07

[Certificate of Proof Test] and GDP108 [Certificate of Proof Test] and request for interim admittance

of gas.




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work on the installation will render the proof test null and void. If any further work has to be carried

out, a new application for the work shall be made together with the plans.





on the gas supply.

Upon successful interim admittance of gas, the Gas Transporter will issue Form GDP109 [Statement

of Interim Admittance of Gas] and the DR shall proceed to purge and commission the Gas

Installation up to, but excluding, the Meter Installation. The Gas Transporter shall then purge and

commission the Meter Installation and issue Form GDP110A [Statement of Admittance of Gas (with

MPRS)] upon successful admittance of gas.

The DR is then required to submit Form GDP111 [Authorisation to Turn On Gas Meter Control Valve]

to apply for gas turn-on. Before the Gas Transporter proceeds to turn on the gas meter control

valve, YTLPS is to respond to the request to turn on and register the initial meter reading for billing

purpose. The DR shall then proceed to purge and commission the consumer’s Internal Pipe up to

the Gas Appliance. The DR is to acknowledge the turn-on of the gas supply using Form DR08

[Acknowledgement of Turn-on / Re-commissioning of Gas Supply] together with Form DR09

[Certificate of Conformity for Gas Appliance] and Form DR10 [Statement of Safe for Use].

3 Procedures for Replacement, Addition and Alteration of Gas

Fittings and Appliances

The procedures for transmission and distribution connections are also applicable for the

replacement, addition and alteration of Gas Fittings and Gas Appliances. Application for works to be

carried out on the underground Gas Mains, such as the application for the termination of the gas

supply to premises and the diversion of underground gas pipes, shall be made to YTLPS who will

then inform the Gas Transporter.

The consumer has to submit Form DR01 [Application for Gas Supply / Disconnection /

Discontinuation] to YTLPS informing the intention of addition and alteration works. Upon approval

from YTLPS, the consumer is required to submit to YTLPS with the following information:

(i) Either Form GTP102 [Consumer Project Data Sheet] or GDP102 [Consumer Project Data

Sheet];

(ii) Existing pipeline layout plan;

(iii) Mark up of the existing pipeline layout plan indicating any replacement, or addition or

alteration of Gas Fittings and Gas Appliances;

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(iv) Form DR02 [Submission of Plan & Specification]; and

(v) Form DR03 [Designated Representative Declaration Form].

The consumer will appoint a DR to carry out this addition and alteration works and the above

procedures from Sections 2.2 or 2.3 will apply. Application for gas turn-on will have to be submitted

to YTLPS with at least 2 weeks’ notice provided using Form DR06 [Request for Turn-on / Re-

commissioning of Gas Supply].

After the submission has been processed, the consumer will be informed of the outcome. If

approved, the works shall be carried out in accordance with the Regulatory Requirements.

4 Gas Supply Termination/Disconnection

In the event that the consumer wishes to terminate the gas supply upon expiry of the agreement or

in accordance with the terms of the relevant gas sales agreement, the consumer shall notify YTLPS in

accordance to the commercial arrangement and submit Form DR01 [Application for Gas Supply /

Disconnection / Discontinuation]. Upon receipt of the written notice and Form DR01 [Application

for Gas Supply / Disconnection / Discontinuation], YTLPS will make necessary arrangements with the

Gas Transporter to effect the disconnection and isolation of the gas supply to the premises.

The consumer shall be obliged to perform all the necessary action(s) for the removal of the Internal

Pipe between the MPRS/Meter Installation and the consumer's Gas Appliance in accordance with

the demarcation of responsibilities and all other Regulatory Requirements.

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5 Gas Supply Interruptions and Restoration

When there is a gas leak incidence detected within/outside the consumer’s premises, consumers

shall immediately inform the Gas Transporter’s Control Centre (PowerGas Senoko Control Centre) as

well as YTLPS’s Control Centre (YTLPS CCR) at the following contact numbers:

Gas Transporter’s Control Centre 1800 752 1800 (24 hours)

YTLPS's Control Centre 68904711 (24 hours)

5.1 Interruption due to Gas Leak

During the interim period before the arrival of officers from the Gas Transporter or YTLPS, the

consumer’s safety officer shall assess the condition of site and activate the appropriate emergency

procedure in accordance to its safety procedures. For safety reason, the consumer shall isolate the

gas valve immediately downstream of the MPRS outlet if required.

5.2 Interruption of Gas Flow

If the gas supply to the consumer’s premises is affected by a gas leak or damage to the network

which affects the delivery of gas to the consumer’s Gas Installation, YTLPS will inform the affected

consumers about such supply issue. The consumer shall activate its contingency plan such as using

standby fuel like LPG or diesel to support their production need. Pending the outcome of the

mitigating measures by the Gas Transporter, YTLPS will await further instructions from the Gas

Transporter and liaise with the consumer on the follow up action.

5.3 Restoration of Gas Flow

YTLPS will inform the affected consumers of the supply restoration as soon as possible.

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Appendix A: Overview of Application for Gas Connection / Gas Supply /

Disconnection / Discontinuation for Distribution Consumers

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Appendix B: Transmission Connection Flowchart

Start

Consumer submit Consumer Project Data Sheet (GTP102)

Feasibility study and site survey with the DR, Gas Transporter and YTLPS

Consumer to submit Application for Gas Transmission Connection (GTP101 & DR01), Submission of Plan & Specification (DR02) and

Designated Representative Declaration Form (DR03)

Consumer to sign GSA

Gas Transporter to revert on

capacity availability, connection

charge and lead time

Discussion on alternatives

Approved?

Gas Transporter

to build Meter

Installation?

Gas Transporter to construct the Gas Fitting from the GSIV up

to and including the Meter Installation

Gas Transporter to connect the Gas Fitting to the Gas

Transmission Pipeline and preliminarily admit gas into the Gas

Fitting up to and excluding the Meter Installation


DR to submit Certificate of Completion (GSIV to Meter)

(GTP108A) and Application for Admittance of Gas (Meter by

Others) (GTP105A)

DR (engaged by Consumer) to construct the Gas Fitting from

the GSIV up to and including the Meter Installation

DR to conduct proof test and DR to submit Certificate of Proof

Test (GSIV to Meter) (GTP110A) and DR07

No

Yes

No

No Yes

DR to submit DR04 and conduct Final Pressure Test. DR to

certify on Certificate of Final Pressure Test (GTP109A) and

DR05

Yes – YTLPS to issue RR01

DR to submit Certificate of Completion (GSIV to Meter)

(GTP108A) and Application for Admittance of Gas (Meter by

Others) (GTP105A)

DR to submit DR04 and conduct Final Pressure Test. DR to

certify on Certificate of Final Pressure Test (GTP109A) and

DR05

DR to conduct proof test and DR to submit Certificate of Proof

Test (GSIV to Meter) (GTP110A) and DR07

Gas Transporter to connect the Gas Fitting to the Gas

Transmission Pipeline and preliminarily admit gas into the Gas

Fitting up to and excluding the Meter Installation

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DR to purge and commission up to, and including, the Meter

Installation

Upon successful admittance of gas up to and excluding the

Meter Installation, the Gas Transporter will issue GTP106A

DR to submit Certificate of Completion (Consumer’s Internal Pipe) (GTP108) and Application for Gas

Turn-On (GTP107 & DR06) to turn on gas supply

Upon successful admittance of gas up to and excluding the

Meter Installation, the Gas Transporter will issue GTP106A

DR to purge and commission up to, and excluding, the Meter

Installation. Gas Transporter to purge and commission the

Meter Installation

Gas Transporter to issue GTP106 Gas Transporter to GTP106

DR to liaise with YTLPS in respect of the construction of Gas Installation from outlet valve of the Meter

Installation to the Gas Appliance at the consumer’s premises

DR to notify YTLPS using DR04, conduct Final Pressure Test and certify on Certificate of Final Pressure

Test (Consumer’s Internal Pipe) (GTP109 & DR05)

DR to conduct proof test and submit Certificate of Proof Test (Consumer’s Internal Pipe) (GTP110 &

DR07)

Gas Transporter to issue Statement of Interim Turn-On (GTP111)

DR to purge and commission the consumer’s Internal Pipe up to the Gas Appliance and Gas

Transporter to issue Statement of Turn-On (GTP112). DR to issue DR08, DR09 & DR10.

End

20 | P a g e

Appendix C: Distribution Connection Flowchart

Yes – YTLPS to issue RR01

Consumer to submit Application for Gas Distribution Connection (GDP101 & DR01), Submission of Plan & Specification (DR02) and Designated Representative Declaration Form (DR03)

Start

Consumer to submit Consumer Project Data Sheet (GDP102)

Feasibility study and site survey with the DR, Gas Transporter and YTLPS

Gas Transporter to revert on connection charge and lead time YTLPS to revert on gas price

Consumer agreeable?

Discussion on alternatives


Gas Transporter to construct the Gas Fitting from the GSIV up to and including the MPRS

DR to submit Application for Admittance of Gas (with MPRS) (GDP105), GDP106, GDP107, and DR06

No

DR to liaise with YTLPS in respect of the construction of Gas Installation from outlet valve of the MPRS to

the Gas Appliance at the consumer’s premises

DR to certify GDP106, notify YTLPS using DR04 before conducting the final pressure test, and certify on

GDP107 and DR05

DR to conduct the necessary proof test, complete DR07 and GDP108 and request for interim

admittance of gas

Gas Transporter to issue GDP109 upon successful interim admittance of gas

DR to purge and commission the Gas Installation up to, but excluding, the Meter Installation. Gas

Transporter to purge and commission the Meter Installation and issue GDP110A upon successful

admittance of gas

21 | P a g e

End

DR to submit GDP111 to apply for gas turn-on

Before the Gas Transporter proceeds to turn on the gas meter control valve, YTLPS is to respond to the

request to turn on and register the initial meter reading for billing purpose

DR to purge and commission the consumer’s Internal Pipe up to the Gas Appliance

DR is to acknowledge the turn-on of the gas supply using DR08, DR09 and DR10

22 | P a g e

Appendix D: Transmission Connection Forms From Gas Transporter Form GTP101 Application for Gas Transmission Connection

Form GTP102 Consumer Project Data Sheet

Form GTP105A Application for Admittance of Gas (Meter by Others)

Form GTP106 Statement of Admittance of Gas

Form GTP106A Statement of Interim Admittance of Gas

Form GTP107 Application for Gas Turn-On

Form GTP108 Certification of Completion (Consumer’s Internal Pipe)

Form GTP108A Certification of Completion (GSIV to Meter)

Form GTP109 Certification of Final Pressure Test (Consumer’s Internal Pipe)

Form GTP109A Certification of Final Pressure Test (GSIV to Meter)

Form GTP110 Certificate of Proof Test (Consumer’s Internal Pipe)

Form GTP110A Certificate of Proof Test (GSIV to Meter)

Form GTP111 Statement of Interim Turn-On

Form GTP112 Statement of Turn-On

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Appendix E: Distribution Connection Forms From Gas Transporter Form GDP101 Application for Gas Distribution Connection

Form GDP102 Consumer Project Data Sheet

Form GDP105 Application for Admittance of Gas

Form GDP106 Certificate of Completion

Form GDP107 Certificate of Final Pressure Test

Form GDP108 Certificate of Proof Test

Form GDP109 Statement of Interim Admittance of Gas

Form GDP110 Statement of Admittance of Gas (without MPRS)

Form GDP110A Statement of Admittance of Gas (with MPRS)

Form GDP111 Authorisation to Turn On Gas Meter Control Valve

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Appendix F: Standard DR Forms for Consumer Form DR01 Application for Gas Supply / Disconnection / Discontinuation

Form DR02 Submission of Plan & Specification

Form DR03 Designated Representative Declaration Form

Form DR04 Notification of Final Pressure Test

Form DR05 Certificate of Final Pressure Test

Form DR06 Request for Turn-on / Re-commissioning of Gas Supply

Form DR07 Certificate of Proof Test

Form DR08 Acknowledgement of Turn-on / Re-commissioning of Gas Supply

Form DR09 Certificate of Conformity for Gas Appliance

Form DR10 Statement of Safe for Use

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Appendix G: Demarcation of Responsibility of Gas Service Work of

Single / Multiple Retail Consumers

26 | P a g e

Appendix H: Natural Gas Safety Information

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