QUOTE(mushigen @ Apr 2 2025, 11:08 AM)
maybe he install spark arrestor on the exhaust of the enginemaybe loh
Putra height - Day before pipeline erupted
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Apr 2 2025, 11:11 AM
Show posts by this member only | IPv6 | Post
#101
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911 posts Joined: Jun 2005 |
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Apr 2 2025, 11:12 AM
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1,035 posts Joined: Feb 2007 |
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Apr 2 2025, 11:12 AM
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4,954 posts Joined: Jul 2010 |
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). 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. 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. If leak is upstream of flow meter, reading may momentarily drop but may be compensated by control valves movement. Skidd Chung liked this post
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Apr 2 2025, 11:18 AM
Show posts by this member only | IPv6 | Post
#104
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190 posts Joined: Feb 2021 |
That road crossing over the pipeline with backhoe moving back and fro , sure will cause stress to the underground pipe
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Apr 2 2025, 11:33 AM
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479 posts Joined: May 2010 |
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. 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. 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... 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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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. 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..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. 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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Apr 2 2025, 11:38 AM
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#107
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17 posts Joined: Jan 2014 |
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. 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.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. This post has been edited by FreedomSeeker: Apr 2 2025, 11:40 AM |
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Apr 2 2025, 11:44 AM
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479 posts Joined: May 2010 |
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. Yes, this is true.If leak is upstream of flow meter, reading may momentarily drop but may be compensated by control valves movement. 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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Apr 2 2025, 11:49 AM
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4,954 posts Joined: Jul 2010 |
QUOTE(Skidd Chung @ Apr 2 2025, 11:44 AM) Yes, this is true. Yup, 50kg per hour loss is usually not detectable by operator.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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Apr 2 2025, 11:51 AM
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#110
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167 posts Joined: Jan 2010 |
Ini salah dap
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Apr 2 2025, 11:55 AM
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4,954 posts Joined: Jul 2010 |
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 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. 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... 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. |
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Apr 2 2025, 11:58 AM
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Senior Member
4,895 posts Joined: May 2008 |
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Apr 2 2025, 12:01 PM
Show posts by this member only | IPv6 | Post
#113
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717 posts Joined: Nov 2012 |
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Apr 2 2025, 12:03 PM
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479 posts Joined: May 2010 |
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. In the industry, but not an expert. Just average joe. My opinions are based on my experience, not 'expertise'. FreedomSeeker liked this post
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Apr 2 2025, 12:08 PM
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204 posts Joined: Aug 2011 |
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.
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Apr 2 2025, 12:20 PM
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14 posts Joined: Oct 2014 From: Bandar Damai dan Indah |
Palatao
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Apr 2 2025, 12:26 PM
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239 posts Joined: Mar 2018 |
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.. Look at usj 3 entire stretch is all right next to the pipelineIn 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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Apr 2 2025, 12:36 PM
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#118
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717 posts Joined: Nov 2012 |
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? 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 |
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Apr 2 2025, 12:39 PM
Show posts by this member only | IPv6 | Post
#119
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717 posts Joined: Nov 2012 |
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Apr 2 2025, 12:41 PM
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1,026 posts Joined: Jul 2011 |
Gila mia developer, Main2 sama itu gas pipe
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