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Natural Gas Transmission System

The transmission pipeline of PTT stretches including onshore and subsea pipelines. PTT’s gas pipeline system connects with various gas pipelines in the Gulf of Thailand, LNG terminal, the pipeline grid from Yadana, Yetagun and Zawtika Myanmar at the Thai-Myanmar border with power plants, the Gas Separation Plants and industrial users. The system also contains Dew Point Control Unit and the Header which control the quality of gas from different sources in the Gulf of Thailand to ensure common and uniformed heat and quality.

At PTT, every gas pipeline is laid according to stringent safety regulations. We underscore the importance of welfare, property and environment of the community.


Distribution Pipeline

This pipeline system of over 511 kilometers, is a connecting pipeline branching out from the main pipeline to connect with industries. Presently, there are a total of 450 industrial users.


 

Map of Natural Gas Pipeline Network



Vision Mission and Value of Natural Gas Transmission Pipeline

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Picture of Vision Mission and Value of Natural Gas Transmission Pipeline


Natural Gas Pipeline System Operation

In order to control and manage PTT’s natural gas pipeline system effectively and ensure maximum safety, the operations are divided into 3 main sections which are Western Pipeline Operations, Eastern Pipeline Operations and Offshore Pipeline Operations.

Chonburi Operation Center

It is the main center for operating and controlling natural gas receiving from the producers and transmitting to customers located along the pipeline routes. It provides control and planning, engineering support, maintenance, control of safety and environment of the pipeline and that of metering stations (M&R Station). It also prevents and responds to pipeline emergencies through the Supervisory Control and Data Acquisition System (SCADA) through the use of a number of strategic communication tools such as microwave, optic fibers and satellite, etc.


Thailand Quality Award (TQA) Criteria in Natural Gas Transmission Pipeline Management

Since 2003, natural gas transmission pipeline management brought Thailand Quality Award criteria in organization development until, in 2010, successfully received the Thailand Quality Award, the highest award given by the Thailand Quality Award Office to organizations with world-class quality and potential in integrated management.


Scopes and Areas of Gas Operations Systems

 

 Map of Scopes and Areas of Gas Operations Systems

 


Region I Gas Operations Division is responsible for gas transmission in Chonburi, Chachoengsao, Rayong, Samutprakarn and Bangkok.

Region II Gas Operations Division is responsible for gas transmission in Bangkok, Pathumthani, Ayutthaya, Saraburi, Lopburi and Prachinburi.

Region III Gas Operations Division is responsible for gas transmission in Rayong and Chonburi.

Region IV Gas Operations Division is responsible for gas transmission in Khonkaen.

Region V Gas Operations Division is responsible for gas transmission in Ratchaburi and Nakhon Pathom.

Region VI Gas Operations Division is responsible for gas transmission in Bangkok, Samutsakorn, Samutprakarn, Pathum Thani and Nakhon Pathom.

Region VII Gas Operations Division is responsible for gas transmission in Songkhla.

Region VIII Gas Operations Division is responsible for gas transmission in Kanchanaburi and Rathchaburi.

Region IX Gas Operations Division is responsible for gas transmission in Bangkok, Pathum Thani and Samutprakarn.

Region X Gas Operations Division is responsible for gas transmission in Chachoengsao, Prachinburi and Nakhonnayok.

Offshore Pipeline Operations Department is responsible for offshore gas transmission, Erawan Riser Platform (ERP) and PTT Riser Platform (PRP) covering the areas of Pattani, Songkhla, Nakhon Sri Thammarat, Suratthani, Chumphon, Prachuabkirikhan and Rayong.


 

Main responsibilities of Gas Operations Division

  • Monitor and maintain the pipeline system to comply with international standard.
  • Supervise, oversee and maintain the Block Valve Stations, M&R Stations, and the control system to be in line with the standard and able to deliver the gas to customers correctly.
  • Prevent and respond to emergency of the pipeline.
  • Supervise and carry out community relations activities to ensure confidence of the people in the responsible areas in the safety and environmental systems of the pipeline.


Automation Control and Communication System


 

Supervisory Control and Data Acquisition: SCADA

SCADA is a computer network technology designed for real-time remote gas dispatching control through the whole pipeline network to ensure the time, quality, safety, and continuity of natural gas transmitted to customers. The current main control center is located in Chonburi.


Block Valve Station

Each Block Valve Station is equipped with a Remote Terminal Unit (RTU) and a communication system which connects the signal from the field instrument to the control center for the continuity of gas transmission control and safety monitoring.


Communications Systems

To ensure the optimum security of the system, we adopt a number of highly sophisticated and state-of-the-art technologies of communication systems and devices as follows:

  • The fiber optic cable is laid along the pipeline. Currently, it is the major communication system that can support Bit Rate 622 Mbps.
  • Satellite telecommunication is the communication system to transfer data between gulf and control center.
  • Microwave is the communication system to use for some areas that Fiber Optic cannot be located.
  • UHF (Ultra High Frequency) and VHF (Very High Frequency) radio systems are used extensively to cover the entire gas transmission pipeline as well.
  • GPRS System is used for transmitting data between RTU with SCADA system of NGV stations and AMR


Pipeline Integrity Management System: PIMS

PIMS has been used with PTT main gas transmission pipelines to keep the safety, strength and integrity of the pipelines to the designed level so that the transmission can be done continuously to serve customers' demand and the pipelines will last long and be working at full efficiency.


Geographic Information System: GIS

GIS, which consists of computer hardware, software and process, is a tool used for analyzing spatial data. Varieties of data in the study area will be organized in relational format by its type and details. The system is designed to store, manage, generate, analyze, model, and show the data for solving complicated planning problems and management problems.