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As a result of the PTT Public Company Limited gas pipeline, an explosion and fire occurred in Bang Bo District, Samut Prakan Province. This last week resulted in a series of deaths and injuries. Initially, Mr. Supatthanaphong Phanmichaow, Deputy Prime Minister and Minister of Energy. Leading the PTT management team and the Electricity Generation Authority of Thailand (EGAT) enter the area to immediately treat the affected people. Ready to order to fully assist ASAP
Recently, PTT has not “summarized” the cause of the explosion. The pieces of the gas pipeline and the soil samples were delivered to the National Materials and Metals Technology Center (MTEC) to analyze the damage. This will result in an expert assessing the damage further.
Implement “fuel oil” instead
The PTT gas pipeline system is known to have a total length of 4,255 kilometers with marine and terrestrial gas pipelines. Where the incident line is the second pipeline, Bang Pakong-Wang Noi period has been in operation since 1996.
Mr. Manoon Siriwan, an energy expert, said that PTT is currently the sole operator of gas pipelines in Thailand. (Since the installation of the gas pipeline system last year 1981), unlike oil pipelines, there are many operators. There are 2 routes for the gas pipeline, namely the east side. From the Gulf of Thailand to land on Map Ta Phut With gas separation plants And forwarded to Bangpakong Power Plant And in the west it came from Myanmar But initially the explosive pipeline was not connected to the power plant. But it is a natural gas pipeline to industrial factories in Bang Bo district, so the power plants will not be affected. The affected factories will have to adjust their production plans from the use of natural gas to fuel oil, which may result in a slight increase in production costs.
Security – backup plan
On the subject of safety standards, “Mr. Manoon” said that PTT really deals with safety according to international standards. From the pipeline and operation That this explosion occurs for the first time in 30 years, the real cause that is produced by a pipe failure must be investigated. Typically, if a pipe is faulty, a notification will be sent to a system that measures the pressure inside the pipe, for example:
Leaky pipe, should be alerted to pressure drop. But this happens early, you have to check the system. Or has someone damaged the pipe? However, I don’t want everyone to look at this incident and fear that it is unsafe. In the process of operation, during this time, it should be closed for repair during the damage period. As for the “liability” issue, PTT will repair first. What is insured? The insurer then has to investigate the damages of the person who caused the explosion.
ASME B31.8 standard
While “Mr. Atikom Terbsiri”, director of operations of the Upstream Petroleum and Gas business group, PTT explained the security measures of the gas pipeline system as “PTT has always strictly complied with the International Standard (ASME B31.8) for its management of gas pipelines. From the stage of design, construction, management, transportation and maintenance of gas pipelines. For efficiency in gas transmission AND maximum safety is important
Controlling and monitoring gas transmission By automatic control system (data acquisition and supervision control system) or SCADA system at Chonburi Operations Center Which can control and track gas transmission data in real time 24 hours a day day, allowing gas transmission failures.
There is also a block valve station that monitors gas pressure, temperature and flow along the pipeline. The gas operator can directly close the valve to shut down the system at the scene of the incident through the SCADA system.
The EGAT transmission line was also bombed.
Not only the explosion also caused damage to The “power transmission line” is a 230 kilovolt (kV) high voltage transmission line. Khlong Mai-Lam Luk Ka circuits 1 and 2 are absent from both circuits and the 230 kV Bang Pakong-Nong Jok circuit 1 transmission line cannot be used. The Electricity Generation Authority of Thailand repaired the transmission line to 100% on October 27, 2020.
But because EGAT has a backup system to guarantee uninterrupted power transmission, called N-1 or ring. If the transmission line is broken, electricity can pass to the other side. With the backup system covered almost 100%, there will only be some areas that do not yet have a backup system such as Satun or Chanthaburi-Trat, where EGAT has invested in developing more power transmission lines to cover the country.
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