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 Putra height - Day before pipeline erupted

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desmond2020
post Apr 2 2025, 11:11 AM

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QUOTE(mushigen @ Apr 2 2025, 11:08 AM)
Dey, the backhoe's diesel engine is already a source of ignition.
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maybe he install spark arrestor on the exhaust of the engine

maybe loh
9m2w
post Apr 2 2025, 11:12 AM

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QUOTE(Porkycorgi5588 @ Apr 2 2025, 11:09 AM)
Salah.

The backhoe and bangala already to the moon already  brows.gif
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Isekai liao

But bonus if he isekai with a backhoe in a medieval world he will be the tauke now
mushigen
post Apr 2 2025, 11:12 AM

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QUOTE(Skidd Chung @ Apr 2 2025, 10:56 AM)
If you are talking about smell detection, yeah sure you can 'detect' a leak if you are there or the wind blows your direction, the concentration is sufficient, etc. So you can report it to authorities (BOMBA).

But the operators monitoring the pipe flows will not detect the 'neglegible' leaks. It is 'accepted' there will be leaks, whether it is 'harmless' or not, etc before a decision is made to shut the pipes down for maintenance.
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If the leak is downstream of flow meter, the flow won't change. If big leak, flow may even increase and the control valve will act to compensate.

If leak is upstream of flow meter, reading may momentarily drop but may be compensated by control valves movement.
mac_mac21
post Apr 2 2025, 11:18 AM

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That road crossing over the pipeline with backhoe moving back and fro , sure will cause stress to the underground pipe
Skidd Chung
post Apr 2 2025, 11:33 AM

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QUOTE(FreedomSeeker @ Apr 2 2025, 11:01 AM)
I dono la... If even you can come out thing like that then i dont think a million or billion dollar industry wont just dont care about it and never find a solution for this. Gas pipe line is not new also and it is not something that can be taken lightly for its safety. Even a small leakage can cause explosion and fatality. I pretty sure these industries know how important to detect early leakage big or small.

Korek then leak then boom terus this 1 i can understand la... korek then leak then boom 1 or 2 days later really susah to make sense. But still i can't say i am right also la... Better wait report out see la...
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You just answered your own question. It is a BILLION dollar industry. You don't shut down a billion dollar operation for every single little leak you find. Gas pipes powers the nation, if you shut down power supply for 1 week for every leak you find, you wont have power for the whole year.

Of course in an ideal world, all the pipes installed are perfectly manufactured, by competent workers, and it is perfectly checked by quality control and perfectly installed by highest paid workers with highest standard of safety and competence. I'm telling you, it is not.

Gas pipelines are not new, it is used because it works. It isnt perfect or maybe perfect pipes are just too expensive to install. Whatever the reason is, the industry can only pray their pipes don't rupture due to unforeseen circumstances. And will only replace pipes that are known to have their integrity suspect.


Iconia18
post Apr 2 2025, 11:37 AM

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QUOTE(Porkycorgi5588 @ Apr 2 2025, 11:08 AM)
There are many residential neighbourhoods built like this.
All the way from Subang to Kota Kemuning to Klang.

Heck, I can even tell you how these lines cross the road in some places.
Heck, there's one underneath Kesas itself.
Heck, how do you think it is tapped into factories for consumption?

It is not questionable for this practice, it is the practical way.
Got exclusion zone already.
Exclusion zone is taken cared of. no trees no big roots etc. no piling inside.
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Practical within safe margin its ok. But i worked in oil and gas industry so if its up to me no way i will allow road above two meter buried main gas line. If its for single phase dead oil line or water injection/production line then its ok..

In iraq we even relocate houses within certain distance if we want to build new gas lines.

In this case the way i read it gas line came first. So its responsibility of pbt not to allow residential within certain distance from the area.

FreedomSeeker
post Apr 2 2025, 11:38 AM

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QUOTE(Skidd Chung @ Apr 2 2025, 11:33 AM)
You just answered your own question. It is a BILLION dollar industry. You don't shut down a billion dollar operation for every single little leak you find. Gas pipes powers the nation, if you shut down power supply for 1 week for every leak you find, you wont have power for the whole year.

Of course in an ideal world, all the pipes installed are perfectly manufactured, by competent workers, and it is perfectly checked by quality control and perfectly installed by highest paid workers with highest standard of safety and competence. I'm telling you, it is not.

Gas pipelines are not new, it is used because it works. It isnt perfect or maybe perfect pipes are just too expensive to install. Whatever the reason is, the industry can only pray their pipes don't rupture due to unforeseen circumstances. And will only replace pipes that are known to have their integrity suspect.
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What ur profession? U in O&G Industry? Not mocking ya… just asking. If u are expert in this field then yeah i can share your explanation.

This post has been edited by FreedomSeeker: Apr 2 2025, 11:40 AM
Skidd Chung
post Apr 2 2025, 11:44 AM

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QUOTE(mushigen @ Apr 2 2025, 11:12 AM)
If the leak is downstream of flow meter, the flow won't change. If big leak, flow may even increase and the control valve will act to compensate.

If leak is upstream of flow meter, reading may momentarily drop but may be compensated by control valves movement.
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Yes, this is true.

However normally supplier and client have their own flowmeters, and also designated flow for each client.

So for instance in this case, client will experience sudden drop in pressure and flow, will attempt to compensate and will probably call the supplier to ask wtf going on.

Supplier will experience a sudden high flow and drop in pressure. Their own controls will compensate and reduce the flow and to build up pressure. They will check if any client is pulling too much.

At this point, if the bomba havent called them yet, they would have to quickly deduce that they might have a pipe burst somewhere and shut their valves and follow their emergency procedure.

However, this is only for large leaks relative to the normal flows. If they are only supplying 100kg/h, even a 10kg/h leak is considered big. If the suppliers are pushing 100t/h flows, 50kg/h leaks might not be noticeable and will be compensated by AUTO controls.
mushigen
post Apr 2 2025, 11:49 AM

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QUOTE(Skidd Chung @ Apr 2 2025, 11:44 AM)
Yes, this is true.

However normally supplier and client have their own flowmeters, and also designated flow for each client.

So for instance in this case, client will experience sudden drop in pressure and flow, will attempt to compensate and will probably call the supplier to ask wtf going on.

Supplier will experience a sudden high flow and drop in pressure. Their own controls will compensate and reduce the flow and to build up pressure. They will check if any client is pulling too much.

At this point, if the bomba havent called them yet, they would have to quickly deduce that they might have a pipe burst somewhere and shut their valves and follow their emergency procedure.

However, this is only for large leaks relative to the normal flows. If they are only supplying 100kg/h, even a 10kg/h leak is considered big. If the suppliers are pushing 100t/h flows, 50kg/h leaks might not be noticeable and will be compensated by AUTO controls.
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Yup, 50kg per hour loss is usually not detectable by operator.
bamkai
post Apr 2 2025, 11:51 AM

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Ini salah dap
mushigen
post Apr 2 2025, 11:55 AM

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QUOTE(FreedomSeeker @ Apr 2 2025, 11:01 AM)
I dono la... If even you can come out thing like that then i dont think a million or billion dollar industry wont just dont care about it and never find a solution for this. Gas pipe line is not new also and it is not something that can be taken lightly for its safety. Even a small leakage can cause explosion and fatality. I pretty sure these industries know how important to detect early leakage big or small.

Korek then leak then boom terus this 1 i can understand la... korek then leak then boom 1 or 2 days later really susah to make sense. But still i can't say i am right also la... Better wait report out see la...
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Korek then boom days later is not something unusual. If a pipeline suffers cracks, they can get worse over time due to pressure and vibration from the flow.

Meanwhile, hydrocarbons leak out and accumulate. If it's LPG, it should explode earlier as LPG is heavier than air and will accumulate at low points (harder for wind to disperse). If gas, may take a while as it's lighter and doesn't accumulate as easily as lpg. All it needs is to reach above lower explosive limit and a source of ignition.
JonSpark
post Apr 2 2025, 11:58 AM

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QUOTE(9m2w @ Apr 2 2025, 11:12 AM)
Isekai liao

But bonus if he isekai with a backhoe in a medieval world he will be the tauke now
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Arafo Isekai

Aired last season
Pugbunny
post Apr 2 2025, 12:01 PM

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QUOTE(machomama @ Apr 2 2025, 08:36 AM)
user posted image

ground 0
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Can't no pipul around this area during the explosion

Anyway good news
Skidd Chung
post Apr 2 2025, 12:03 PM

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QUOTE(FreedomSeeker @ Apr 2 2025, 11:38 AM)
What ur profession? U in O&G Industry? Not mocking ya… just asking. If u are expert in this field then yeah i can share your explanation.
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In the industry, but not an expert. Just average joe. My opinions are based on my experience, not 'expertise'.







omron
post Apr 2 2025, 12:08 PM

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gas leak do not play play , you cannot stand also 1km with gas burn if it happen again trust me, again this is serious issue national issue, imagine another gas burst or multiple like domino happen aa it gas, gas not like oil , thats reason malaysia use gas pipeline for fuel up our power station to generare us as modern country.
emburrar
post Apr 2 2025, 12:20 PM

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Raddus
post Apr 2 2025, 12:26 PM

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QUOTE(Iconia18 @ Apr 2 2025, 11:37 AM)
Practical within safe margin its ok. But i worked in oil and gas industry so if its up to me no way i will allow road above two meter buried main gas line. If its for single phase dead oil line or water injection/production line then its ok..

In iraq we even relocate houses within certain distance if we want to build new gas lines.

In this case the way i read it gas line came first. So its responsibility of pbt not to allow residential within certain distance from the area.
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Look at usj 3 entire stretch is all right next to the pipeline
Pugbunny
post Apr 2 2025, 12:36 PM

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QUOTE(FreedomSeeker @ Apr 2 2025, 10:27 AM)
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?
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Saw comment in FB, one of the residents there called up Petronas to report. The call center said nothing was shown up on thier screen. Let me if can find back the post
Pugbunny
post Apr 2 2025, 12:39 PM

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QUOTE(9m2w @ Apr 2 2025, 11:05 AM)
Actually has anyone bothered to chekc if they have a missing backhoe and foreign worker who hasn't checked in.....
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Why want to report.. Those fella just keep quiet, later can of worms will be spilt out
WebDpot
post Apr 2 2025, 12:41 PM

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Gila mia developer, Main2 sama itu gas pipe

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