you mean 200 KV high voltage transmission line?

Yup, i think the weather sun that day also very hot and trigger the pressure ignition

you is not see enough Ukraine war videos?
Is you not yet seen mighty British Challenger 2 tank with turret tossed into stratosphere?

220v biasa la , autogate, door bell , pillar light also use 220 v pass through car pouch under the car

This post has been edited by bereev: Apr 2 2025, 10:07 AM

this pipeline carry the processed gas, so H2S isn't a concern I think

unless there is line carrying raw gas from production platform then there is risk of H2S

but anyhow, majlis is still damn sohai kebal bodo for approving this

What hard to proof.

This all is handled by forensic and expert. There can pin point exact the problem.

This is not BLEVE which is Boiling Liquid Expansion Vapor Explosion.

BLEVE is only for liquid containers that is heated to a point that the vapors contained within suddenly expands outwards when the containement failed and the expanded vapor ignited.

Something like your tong gas which is liquidfied gas, you put fire outside until the heated tong vaporised all the liquid inside, causing high pressure. Then the tong cracked under intense heat and pressure, the resulting vapor released is what is called a BLEVE.

This is a pressurised gas line rupture, and the gas ignited. There was no fire before the rupture, else we can see smoke everywhere before the explosion.

Based on the still standing building beside the site of release that is not black in color, there was no large release of gas before ignition, or else everything around it will be caught in the explosion and either burned or shatter.

Thus I will conclude it is a pipe rupture, gas sudden released and subsequent ignition of the fuel/air rich mixture. Thus is my amateur conclusion.

This post has been edited by Skidd Chung: Apr 2 2025, 10:11 AM

i wonder how they can give approval or get approval building so close to the gas line...what's the actual guideline, limit distance from the gas line to build.

Prob trying to install pipe to siphon some of the gas for $
If no leak nobody know

Ppl say contractor rapture the pipe then lari. I not sure this theory make sense or not la... It is pressurized pipe and i dont think nowadays there is no sensor to detect pressure leaking la... You are telling me contractor bocor the pipe on 30 march then lari and explosion on 1 april and gas company unable to detect pipe leaking pressure? If ini macam then whole malaysia punya gas pipe ma very jialat lo no early leaking detection?

I want to debunk this theory a bit.

Steel does not fracture easily. Altough the works might cause the pipe to be damaged, leaks happen at point of impact, not 100m away. You dont knock a pipe at point A and it leaks at point C 100m away.

If gas is leaking and covered a large area before igniting, the resulting explosion should have destroyed the buildings beside it. I'm not sure how badly destroyed the shophouses beside is, but i would assume if it was caught in a fiery explosion, it would be burned badly.

Regarding pressure hitting critical, what pressure? The only pressure is in the pipes, once it leaks out to atmosphere, there is only atmospheric pressure.

A pipe failure/rupture can be due to a integrity issues like corrosion or cracks due to errosion or worse case scenario, an impact.

i lol'd when i saw 'expert' claim is BLEVE

anyone from O&G knows its not

i'd put it as VCE without knowing the details.. but definitely not BLEVE

Simply impossible for a high pressure gas line.

Small leaks are hard to detect. Especially for high capacity, high pressure gas.

The leak rate can be discounted as an error of calibration.

100t/h flowrate at 50barg, you won't notice 50kg/h leaks.

usually gas company will put additive, ayam forget the name, but it smell really terrible so that people will notice the leak

problem is this case the digging did by some small time contractor with little knowledge working
on high risk area, their method of digging must like when your excavator bucket hit something, that's the max point of the digging

Fully agree with your BLEVE theory. You need a surrounding fire to cause BLEVE too. There was no report of a fire prior to the main fire, and that was a live pipeline which means rupture from overpressuing was unlikely as there must be an alarm and relief system for the line.

I'm scratching my head looking for the source of ignition. NG has very high auto ignition temperature way above the temperature at which NG is stored or transported in the pipeline. Maybe the invisible gas cloud had travelled outside of the leaking point and caught a source of ignition.

Good theory

let's ask Grok

Mercaptans.

even it is pipe rupture, you still need an ignition source. natural gas don't auto ignite at ambient temperature

so it is a vapor cloud explosion, the nearby house should be the ignition source.