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 Putra height - Day before pipeline erupted

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TSAcoen
post Apr 2 2025, 08:27 AM, updated 9 months ago

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https://www.facebook.com/share/v/16Doqptn4E/


y500
post Apr 2 2025, 08:30 AM

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dest9116
post Apr 2 2025, 08:36 AM

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QUOTE(y500 @ Apr 2 2025, 08:30 AM)
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From the video it' seems they were digging at the southern side means further away from the leak point
machomama
post Apr 2 2025, 08:36 AM

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This post has been edited by machomama: Apr 2 2025, 02:52 PM
ZeroSOFInfinity
post Apr 2 2025, 08:38 AM

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

ground 0
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Did.... did they just dig BETWEEEN the gas pipes to put the sewage pipes????
dest9116
post Apr 2 2025, 08:38 AM

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

ground 0
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Ground zero at left hand side they dig right hand side

Infront is the shoplot, is to the left

Nampak macam developer not responsible wei

This post has been edited by dest9116: Apr 2 2025, 08:38 AM
dest9116
post Apr 2 2025, 08:39 AM

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QUOTE(ZeroSOFInfinity @ Apr 2 2025, 08:38 AM)
Did.... did they just dig BETWEEEN the gas pipes to put the sewage pipes????
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The hole looks massive though, those big pipes they dig out is severage pipe?
Medusakia
post Apr 2 2025, 08:41 AM

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Bila tengok video ni. 1 yang aku terfikir... lepas tengok pulak tempat kejadian selepas kebakaran. Mana agaknya mesen2 dan pekerja2 ni. Adakah api terlalu panas sampai depa pun jadi abu? Ke diorang dah tau gas bocor jadi depa dah lari siap siap?

user posted image
dest9116
post Apr 2 2025, 08:43 AM

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QUOTE(Medusakia @ Apr 2 2025, 08:41 AM)
Bila tengok video ni. 1 yang aku terfikir... lepas tengok pulak tempat kejadian selepas kebakaran. Mana agaknya mesen2 dan pekerja2 ni. Adakah api terlalu panas sampai depa pun jadi abu? Ke diorang dah tau gas bocor jadi depa dah lari siap siap?

user posted image
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Tengok video 30/3 malam, semua mesin dah xde kat sana
NEP1971
post Apr 2 2025, 08:44 AM

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Let’s see what /k experts comment
ZeroSOFInfinity
post Apr 2 2025, 08:45 AM

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QUOTE(dest9116 @ Apr 2 2025, 08:38 AM)
Ground zero at left hand side they dig right hand side

Infront is the shoplot, is to the left

Nampak macam developer not responsible wei
*
Possible. But still can't discard theory the digging could have contributed to fracturing the pipe somewhere due to pressure applied
galkelly
post Apr 2 2025, 08:48 AM

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what a disaster ...
crazy aftermath picture like in warzone
kevintth
post Apr 2 2025, 08:50 AM

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QUOTE(dest9116 @ Apr 2 2025, 08:43 AM)
Tengok video 30/3 malam, semua mesin dah xde kat sana
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I thought they already put so many AWAS signboards on the grass, yet people still go and dig around it?
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sonypshomer
post Apr 2 2025, 08:51 AM

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korek korek kaboom
dest9116
post Apr 2 2025, 08:53 AM

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QUOTE(ZeroSOFInfinity @ Apr 2 2025, 08:45 AM)
Possible. But still can't discard theory the digging could have contributed to fracturing the pipe somewhere due to pressure applied
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Definitely hard to prove theory

At most they kena fine for encroach or work without permit if no approval
prophetjul
post Apr 2 2025, 08:56 AM

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QUOTE(kevintth @ Apr 2 2025, 08:50 AM)
I thought they already put so many AWAS signboards on the grass, yet people still go and dig around it?
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This is Malaysia. What do you expect? That they follow rules and heed warning signboards? laugh.gif
ZeroSOFInfinity
post Apr 2 2025, 08:56 AM

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QUOTE(Medusakia @ Apr 2 2025, 08:41 AM)
Bila tengok video ni. 1 yang aku terfikir... lepas tengok pulak tempat kejadian selepas kebakaran. Mana agaknya mesen2 dan pekerja2 ni. Adakah api terlalu panas sampai depa pun jadi abu? Ke diorang dah tau gas bocor jadi depa dah lari siap siap?

user posted image
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QUOTE(dest9116 @ Apr 2 2025, 08:43 AM)
Tengok video 30/3 malam, semua mesin dah xde kat sana
*
Possible theory - 28 to 30 March (afternoon) digging to place the sewerage pipes. Could have fractured the gas pipe nearby due to pressure during digging.

30 March (evening) - keep equipment because Raya on Monday (31 March). Car video at night showed nothing there.

Between 30 March to 1 April - gas leaking, no worker detect or smell because not working.

1 April - pressure hit critical level, and boom.
yhtan
post Apr 2 2025, 08:57 AM

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QUOTE(ZeroSOFInfinity @ Apr 2 2025, 08:45 AM)
Possible. But still can't discard theory the digging could have contributed to fracturing the pipe somewhere due to pressure applied
*
gas pipe reserve land mana boleh conduct work, u need petronas gas approval or inspection during construction.

Even LRT/MRT track surrounding also need Prasarana approval, this one confirm need.
ZeroSOFInfinity
post Apr 2 2025, 09:01 AM

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QUOTE(yhtan @ Apr 2 2025, 08:57 AM)
gas pipe reserve land mana boleh conduct work, u need petronas gas approval or inspection during construction.

Even LRT/MRT track surrounding also need Prasarana approval, this one confirm need.
*
You hire foreign workers who don't give a shit about safety..... they will do ANYTHING just to get the job done.
SUS~min~
post Apr 2 2025, 09:01 AM

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the comments section is more fun. paip bocor also can become tindas & ambil hak melayu story
prophetjul
post Apr 2 2025, 09:02 AM

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QUOTE(ZeroSOFInfinity @ Apr 2 2025, 08:56 AM)
Possible theory - 28 to 30 March (afternoon) digging to place the sewerage pipes. Could have fractured the gas pipe nearby due to pressure during digging.

30 March (evening) - keep equipment because Raya on Monday (31 March). Car video at night showed nothing there.

Between 30 March to 1 April - gas leaking, no worker detect or smell because not working.

1 April - pressure hit critical level, and boom.
*
For fire to start, you need heat, fuel and oxygen.
Where did the heat come from? Smokers' cig?

This post has been edited by prophetjul: Apr 2 2025, 09:02 AM
kevintth
post Apr 2 2025, 09:03 AM

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QUOTE(prophetjul @ Apr 2 2025, 08:56 AM)
This is Malaysia. What do you expect? That they follow rules and heed warning signboards?  laugh.gif
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Then who approved this project in the first place? LOL. I really think this is the developer's problem—they should compensate all the victims.
hoonanoo
post Apr 2 2025, 09:03 AM

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QUOTE(dest9116 @ Apr 2 2025, 08:38 AM)
Ground zero at left hand side they dig right hand side

Infront is the shoplot, is to the left

Nampak macam developer not responsible wei
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any house drop value, kena burnt down?
ZeroSOFInfinity
post Apr 2 2025, 09:03 AM

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QUOTE(prophetjul @ Apr 2 2025, 09:02 AM)
For fire to start, you need heat, fuel and oxygen.
Where did the heat come from? Smokers' cig?
*
That's for investigators to find out where the heat comes from.
jojolicia
post Apr 2 2025, 09:03 AM

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QUOTE(Acoen @ Apr 2 2025, 08:27 AM)
Good video recording
Medusakia
post Apr 2 2025, 09:04 AM

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QUOTE(dest9116 @ Apr 2 2025, 08:43 AM)
Tengok video 30/3 malam, semua mesin dah xde kat sana
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Jeng3🫢
WongTheThief
post Apr 2 2025, 09:10 AM

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QUOTE(Medusakia @ Apr 2 2025, 10:04 AM)
Jeng3🫢
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what if they actually opened the pandora box (gas pipeline) a little, then found out they fked out, and all cabut midnight first
red_satu
post Apr 2 2025, 09:11 AM

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QUOTE(ZeroSOFInfinity @ Apr 2 2025, 08:56 AM)
Possible theory - 28 to 30 March (afternoon) digging to place the sewerage pipes. Could have fractured the gas pipe nearby due to pressure during digging.

30 March (evening) - keep equipment because Raya on Monday (31 March). Car video at night showed nothing there.

Between 30 March to 1 April - gas leaking, no worker detect or smell because not working.

1 April - pressure hit critical level, and boom.
*
If pipe fractured then how does the pressure increase? Wouldn't it be slowly leaking, which will result in a fire geyser probably, but not an explosion.
ZeroSOFInfinity
post Apr 2 2025, 09:13 AM

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QUOTE(WongTheThief @ Apr 2 2025, 09:10 AM)
what if they actually opened the pandora box (gas pipeline) a little, then found out they fked out, and all cabut midnight first
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Or they kept the equipment because of Raya....
Porkycorgi5588
post Apr 2 2025, 09:14 AM

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QUOTE(dest9116 @ Apr 2 2025, 08:39 AM)
The hole looks massive though, those big pipes they dig out is severage pipe?
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those are RC drain culverts.
Those are storm drains, not sewerage pipes.

sewerage is usually 4" Clay pipe

user posted image


Based on this, it could be that they are upgrading/connecting monsoon drains for the new shoplots.
Perhaps they dig one side no issue, got over confident with the other side.

Either way, it is normal to dig next to services like TNB/Air Selangor/Gas pipe.
However, precautions is required. cannot simply hentam
annoymous1234
post Apr 2 2025, 09:15 AM

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https://www.freemalaysiatoday.com/category/...-pipeline-fire/
ZeroSOFInfinity
post Apr 2 2025, 09:16 AM

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QUOTE(red_satu @ Apr 2 2025, 09:11 AM)
If pipe fractured then how does the pressure increase? Wouldn't it be slowly leaking, which will result in a fire geyser probably, but not an explosion.
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Initially it was an explosion, then fire geyser for hours.
prophetjul
post Apr 2 2025, 09:21 AM

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QUOTE(kevintth @ Apr 2 2025, 09:03 AM)
Then who approved this project in the first place? LOL. I really think this is the developer's problem—they should compensate all the victims.
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What project? The housing? The contractor who caused the explosion shoudl compensate.
And yes, the housing is too near IMO.




SUSRorschach85
post Apr 2 2025, 09:22 AM

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QUOTE(yhtan @ Apr 2 2025, 09:57 AM)
gas pipe reserve land mana boleh conduct work, u need petronas gas approval or inspection during construction.

Even LRT/MRT track surrounding also need Prasarana approval, this one confirm need.
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can, but the work is going to be super tedious, need alot of pilot trenching (manual digging) along the suspected pipe ROW.
Even if they manage to safely exposed pipes, erosion can happen along the excavated slope which can add burden to the pipe, this is the thing happened to my project years back, high voltage cable snapped caused by soil pressure caused by erosion on the side, producing beautiful arc, luckily no one was nearby at the time.

This post has been edited by Rorschach85: Apr 2 2025, 09:23 AM
pinamorita
post Apr 2 2025, 09:24 AM

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QUOTE(machomama @ Apr 2 2025, 08:36 AM)
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ground 0
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for sure this the main cause of it
bereev
post Apr 2 2025, 09:25 AM

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QUOTE(y500 @ Apr 2 2025, 08:30 AM)
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Where is the excavator after fire ? Vaporised ?
loserguy
post Apr 2 2025, 09:26 AM

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QUOTE(bereev @ Apr 2 2025, 09:25 AM)
Where is the excavator after fire ? Vaporised ?
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cuti raya, excavator balik kelate
y500
post Apr 2 2025, 09:27 AM

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QUOTE(bereev @ Apr 2 2025, 09:25 AM)
Where is the excavator after fire ? Vaporised ?
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Check 30/3 malam video, all sau gong jor.
Jasonist
post Apr 2 2025, 09:28 AM

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QUOTE(kevintth @ Apr 2 2025, 08:50 AM)
I thought they already put so many AWAS signboards on the grass, yet people still go and dig around it?
Attached Image
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first time in mareshia ka??? signboards here are for deco only.. doh.gif
damonlbs
post Apr 2 2025, 09:31 AM

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all the gas and construction expert come out already
desmond2020
post Apr 2 2025, 09:32 AM

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remember the last sohai contractor dig near the LRT pier then the pier GG, which cause the line to be interrupted for 1 year plus

sohai contractor need to be educated
kitzai
post Apr 2 2025, 09:34 AM

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QUOTE(dest9116 @ Apr 2 2025, 08:38 AM)
Ground zero at left hand side they dig right hand side

Infront is the shoplot, is to the left

Nampak macam developer not responsible wei
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This is just yesterday.
They started the digging months before and got video they already encroach inside before this
bigduck
post Apr 2 2025, 09:36 AM

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scary shit, i always take this shortcut to my favourite ikan bakar place
Mattrock
post Apr 2 2025, 09:36 AM

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QUOTE(Medusakia @ Apr 2 2025, 08:41 AM)

user posted image
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Any idea where the pipeline is on this pix?
iandope
post Apr 2 2025, 09:40 AM

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QUOTE(Medusakia @ Apr 2 2025, 08:41 AM)
Bila tengok video ni. 1 yang aku terfikir... lepas tengok pulak tempat kejadian selepas kebakaran. Mana agaknya mesen2 dan pekerja2 ni. Adakah api terlalu panas sampai depa pun jadi abu? Ke diorang dah tau gas bocor jadi depa dah lari siap siap?

user posted image
*
BLEVE EXPLOSION.

contractor dah luka kan pipe pastu lari, it may causes the gas to leak already and with just a spark, explosion will happen.
Iconia18
post Apr 2 2025, 09:41 AM

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QUOTE(dest9116 @ Apr 2 2025, 08:38 AM)
Ground zero at left hand side they dig right hand side

Infront is the shoplot, is to the left

Nampak macam developer not responsible wei
*
Not as simple as that. Its probably a rigid straight line carbon steel pipeline coated with other linings. So the weak point will not be exactly on the pressure applied side. It can be nearby pipe joints which is typically the weak part of the connection.

Basically u move pipe 100 meter away pun the whole pipe section can move.

If its water pipe then its ok for small leak at the joints. But gas pipeline is a big no no.
RT8081
post Apr 2 2025, 09:42 AM

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QUOTE(Iconia18 @ Apr 2 2025, 09:41 AM)
Not as simple as that. Its probably a rigid straight line carbon steel pipeline coated with other linings. So the weak point will not be exactly on the pressure applied side. It can be nearby pipe joints which is typically the weak part of the connection.

Basically u move pipe 100 meter away pun the whole pipe section can move.

If its water pipe then its ok for small leak at the joints. But gas pipeline is a big no no.
*
So means now entire piping need to investigate for any damages ?
desmond2020
post Apr 2 2025, 09:42 AM

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QUOTE(iandope @ Apr 2 2025, 09:40 AM)
BLEVE EXPLOSION.

contractor dah luka kan pipe pastu lari, it may causes the gas to leak already and with just a spark, explosion will happen.
*
yes, people don't realize gas vapor explosion need a ignition source before it can go off

so contractor must realize they have hit the jackpot before cabut in hurry


now most likely already in thailand chilling
caksz
post Apr 2 2025, 09:44 AM

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How deep the gas line is ?
ZeroSOFInfinity
post Apr 2 2025, 09:45 AM

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QUOTE(caksz @ Apr 2 2025, 09:44 AM)
How deep the gas line is ?
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According to sources - 6tf.
popice2u
post Apr 2 2025, 09:47 AM

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still dont understand why got a gas pipeline
Iconia18
post Apr 2 2025, 09:50 AM

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QUOTE(RT8081 @ Apr 2 2025, 09:42 AM)
So means now entire piping need to investigate for any damages ?
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It gonna be by sections. Cannot be in in situ only.
Actually i work in iraq last 3 years involve in building gas lines to power plant. Gas line is no joke. So much thoughts on all the potential weak points on how to protect against civil work and militants activity etc.

But in the end we know that we cant protect everything. Everyone nearby need to be responsible and educated on how to approach nearby lines area.

The funny thing is even in our project the council only approve 1.5 km at least from gas lines pagar for any road works or civil works.
Skidd Chung
post Apr 2 2025, 09:54 AM

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QUOTE(popice2u @ Apr 2 2025, 09:47 AM)
still dont understand why got a gas pipeline
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How do you think our power stations are run?

Even refineries with their own power generation units imports natural gas, and it is via pipelines it is delivered.

Do u think gas trucks have the ability to sustain a power plant?
desmond2020
post Apr 2 2025, 09:54 AM

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QUOTE(Iconia18 @ Apr 2 2025, 09:50 AM)
It gonna be by sections. Cannot be in in situ only.
Actually i work in iraq last 3 years involve in building gas lines to power plant. Gas line is no joke. So much thoughts on all the potential weak points on how to protect against civil work and militants activity etc.

But in the end we know that we cant protect everything. Everyone nearby need to be responsible and educated on how to approach nearby lines area.

The funny thing is even in our project the council only approve 1.5 km at least from gas lines pagar for any road works or civil works.
*
but this one the excavation is done within 100 meter of gas line leh
RT8081
post Apr 2 2025, 10:01 AM

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QUOTE(Iconia18 @ Apr 2 2025, 09:50 AM)
It gonna be by sections. Cannot be in in situ only.
Actually i work in iraq last 3 years involve in building gas lines to power plant. Gas line is no joke. So much thoughts on all the potential weak points on how to protect against civil work and militants activity etc.

But in the end we know that we cant protect everything. Everyone nearby need to be responsible and educated on how to approach nearby lines area.

The funny thing is even in our project the council only approve 1.5 km at least from gas lines pagar for any road works or civil works.
*
Thanks bro for sharing. Yeah, Gas line is something no one should play with.

I was in kerteh in 1998 and found out that the entire township is sitting on a gas pipe. Someone back then mentioned that if something bad happen to the pipes, the whole township and nearby area will be wiped out
Porkycorgi5588
post Apr 2 2025, 10:01 AM

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QUOTE(RT8081 @ Apr 2 2025, 09:42 AM)
So means now entire piping need to investigate for any damages ?
*
partly of annual inspection anyway.

DOSH related items all have to check for wall thickness annually.


RT8081
post Apr 2 2025, 10:03 AM

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QUOTE(Porkycorgi5588 @ Apr 2 2025, 10:01 AM)
partly of annual inspection anyway.

DOSH related items all have to check for wall thickness annually.
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Oh ok. Hopefully through check done la
Porkycorgi5588
post Apr 2 2025, 10:03 AM

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QUOTE(Skidd Chung @ Apr 2 2025, 09:54 AM)
How do you think our power stations are run?

Even refineries with their own power generation units imports natural gas, and it is via pipelines it is delivered.

Do u think gas trucks have the ability to sustain a power plant?
*
wait till he fins out got 220v cable underneath his car porch brows.gif brows.gif brows.gif
desmond2020
post Apr 2 2025, 10:03 AM

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QUOTE(popice2u @ Apr 2 2025, 09:47 AM)
still dont understand why got a gas pipeline
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because gas pipeline was there before they decide it is good idea to put a taman there
Iconia18
post Apr 2 2025, 10:04 AM

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QUOTE(desmond2020 @ Apr 2 2025, 09:54 AM)
but this one the excavation is done within 100 meter of gas line leh
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In this case majlis damn crazy approving whole residential section within couple of meters from main gas distribution line.

Normally the concern is either gas explosion or h2s contamination. Normally natural gas contains some h2s depending on scavenging efficiency at processing plant. Even small leak with less than 10 ppm h2s can kill people without any explosion.
desmond2020
post Apr 2 2025, 10:04 AM

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QUOTE(Porkycorgi5588 @ Apr 2 2025, 10:03 AM)
wait till he fins out got 220v cable underneath his car porch  brows.gif  brows.gif  brows.gif
*
you mean 200 KV high voltage transmission line?
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post Apr 2 2025, 10:05 AM

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QUOTE(ZeroSOFInfinity @ Apr 2 2025, 08:56 AM)
Possible theory - 28 to 30 March (afternoon) digging to place the sewerage pipes. Could have fractured the gas pipe nearby due to pressure during digging.

30 March (evening) - keep equipment because Raya on Monday (31 March). Car video at night showed nothing there.

Between 30 March to 1 April - gas leaking, no worker detect or smell because not working.

1 April - pressure hit critical level, and boom.
*
Yup, i think the weather sun that day also very hot and trigger the pressure ignition
Porkycorgi5588
post Apr 2 2025, 10:05 AM

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QUOTE(bereev @ Apr 2 2025, 09:25 AM)
Where is the excavator after fire ? Vaporised ?
*
you is not see enough Ukraine war videos?
Is you not yet seen mighty British Challenger 2 tank with turret tossed into stratosphere? brows.gif brows.gif brows.gif
bereev
post Apr 2 2025, 10:06 AM

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QUOTE(Porkycorgi5588 @ Apr 2 2025, 10:03 AM)
wait till he fins out got 220v cable underneath his car porch  brows.gif  brows.gif  brows.gif
*
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
desmond2020
post Apr 2 2025, 10:06 AM

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QUOTE(Iconia18 @ Apr 2 2025, 10:04 AM)
In this case majlis damn crazy approving whole residential section within couple of meters from main gas distribution line.

Normally the concern is either gas explosion or h2s contamination. Normally natural gas contains some h2s depending on scavenging efficiency at processing plant. Even small leak with less than 10 ppm h2s can kill people without any explosion.
*
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
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post Apr 2 2025, 10:08 AM

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QUOTE(dest9116 @ Apr 2 2025, 08:53 AM)
Definitely hard to prove theory

At most they kena fine for encroach or work without permit if no approval
*
What hard to proof.

This all is handled by forensic and expert. There can pin point exact the problem.
Skidd Chung
post Apr 2 2025, 10:08 AM

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QUOTE(iandope @ Apr 2 2025, 09:40 AM)
BLEVE EXPLOSION.

contractor dah luka kan pipe pastu lari, it may causes the gas to leak already and with just a spark, explosion will happen.
*
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
Jv8888
post Apr 2 2025, 10:12 AM

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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.
urnicksux2
post Apr 2 2025, 10:13 AM

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Prob trying to install pipe to siphon some of the gas for $
If no leak nobody know
FreedomSeeker
post Apr 2 2025, 10:27 AM

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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?
Skidd Chung
post Apr 2 2025, 10:29 AM

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QUOTE(ZeroSOFInfinity @ Apr 2 2025, 08:56 AM)
Possible theory - 28 to 30 March (afternoon) digging to place the sewerage pipes. Could have fractured the gas pipe nearby due to pressure during digging.

30 March (evening) - keep equipment because Raya on Monday (31 March). Car video at night showed nothing there.

Between 30 March to 1 April - gas leaking, no worker detect or smell because not working.

1 April - pressure hit critical level, and boom.
*
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.






SUSsihamsedap
post Apr 2 2025, 10:31 AM

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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
Skidd Chung
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QUOTE(urnicksux2 @ Apr 2 2025, 10:13 AM)
Prob trying to install pipe to siphon some of the gas for $
If no leak nobody know
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Simply impossible for a high pressure gas line.
Skidd Chung
post Apr 2 2025, 10:34 AM

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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?
*
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.
desmond2020
post Apr 2 2025, 10:36 AM

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QUOTE(Skidd Chung @ Apr 2 2025, 10:31 AM)
Simply impossible for a high pressure gas line.
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usually gas company will put additive, ayam forget the name, but it smell really terrible so that people will notice the leak
pinamorita
post Apr 2 2025, 10:36 AM

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QUOTE(Rorschach85 @ Apr 2 2025, 09:22 AM)
can, but the work is going to be super tedious, need alot of pilot trenching (manual digging) along the suspected pipe ROW.
Even if they manage to safely exposed pipes, erosion can happen along the excavated slope which can add burden to the pipe, this is the thing happened to my project years back, high voltage cable snapped caused by soil pressure caused by erosion on the side, producing beautiful arc, luckily no one was nearby at the time.
*
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
mushigen
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QUOTE(Skidd Chung @ Apr 2 2025, 10:08 AM)
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.
*
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.

JimbeamofNRT
post Apr 2 2025, 10:37 AM

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QUOTE(Medusakia @ Apr 2 2025, 08:41 AM)
Bila tengok video ni. 1 yang aku terfikir... lepas tengok pulak tempat kejadian selepas kebakaran. Mana agaknya mesen2 dan pekerja2 ni. Adakah api terlalu panas sampai depa pun jadi abu? Ke diorang dah tau gas bocor jadi depa dah lari siap siap?

user posted image
*
Good theory

let's ask Grok cool2.gif
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QUOTE(desmond2020 @ Apr 2 2025, 10:36 AM)
usually gas company will put additive, ayam forget the name, but it smell really terrible so that people will notice the leak
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Mercaptans.
desmond2020
post Apr 2 2025, 10:40 AM

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QUOTE(mushigen @ Apr 2 2025, 10:37 AM)
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.
*
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.
Raddus
post Apr 2 2025, 10:43 AM

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QUOTE(Iconia18 @ Apr 2 2025, 09:41 AM)
Not as simple as that. Its probably a rigid straight line carbon steel pipeline coated with other linings. So the weak point will not be exactly on the pressure applied side. It can be nearby pipe joints which is typically the weak part of the connection.

Basically u move pipe 100 meter away pun the whole pipe section can move.

If its water pipe then its ok for small leak at the joints. But gas pipeline is a big no no.
*
saw some drone image, the gas pipeline is actually sticking out of the ground where the crater is

somehow the pipe just snap in half

user posted image
user posted image
mushigen
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QUOTE(pinamorita @ Apr 2 2025, 10:36 AM)
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
*
A long fully operational pipeline is very heavy and need structural supports along the way.
Not referring to this pipeline in particular, but if a support is disturbed or shifted due to soil movement (tremors ke, soil erosion ke) or a pipe itself kena mechanical shocks, it places big mechanical stress on the piping, and the weakest point, especially welded joints might give way.
My 2 sen opinion jer.
Iconia18
post Apr 2 2025, 10:47 AM

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QUOTE(desmond2020 @ Apr 2 2025, 10:06 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
*
Sometimes it depends on sale spec. Because its hard to reduce h2s until below 5 ppm. For utilization by industry the small h2s will just burn into sulfur dioxide a anyway. So they can accept that.

But still like you said. Its questionable approving residential area within couple of meters from gas line.

I even saw road already built crossing the line? If that is true thats even more irresponsible.


mushigen
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QUOTE(desmond2020 @ Apr 2 2025, 10:40 AM)
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.
*
It's always vapour cloud that ignites. You throw a lighted match in a bucket of diesel and the match probably just dies off. Heat up the diesel to generate enough fumesand it may be a different story.

I've mentioned about its high auto ignition temperature and the need for an ignition source.

My theory is the leaks cause gas to acculumate, and the gas travelled until it caught a source of ignition. In a housing estate, there aren't many intrinsically safe devices being used, so it can easily find a source of ignition. A TNB meter? Anything.
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post Apr 2 2025, 10:52 AM

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QUOTE(Medusakia @ Apr 2 2025, 08:41 AM)
Bila tengok video ni. 1 yang aku terfikir... lepas tengok pulak tempat kejadian selepas kebakaran. Mana agaknya mesen2 dan pekerja2 ni. Adakah api terlalu panas sampai depa pun jadi abu? Ke diorang dah tau gas bocor jadi depa dah lari siap siap?

user posted image
*
Wtf is Omen Necrofis
desmond2020
post Apr 2 2025, 10:52 AM

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QUOTE(mushigen @ Apr 2 2025, 10:50 AM)
It's always vapour cloud that ignites. You throw a lighted match in a bucket of diesel and the match probably just dies off. Heat up the diesel to generate enough fumesand it may be a different story.

I've mentioned about its high auto ignition temperature and the need for an ignition source.

My theory is the leaks cause gas to acculumate, and the gas travelled until it caught a source of ignition. In a housing estate, there aren't many intrinsically safe devices being used, so it can easily find a source of ignition. A TNB meter? Anything.
*
a burning incense, a hot engine surface and etc

thousand of potential spark point in a residential area.
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QUOTE(desmond2020 @ Apr 2 2025, 10:52 AM)
a burning incense, a hot engine surface and etc

thousand of potential spark point in a residential area.
*
Bingo.
SuperGampang
post Apr 2 2025, 10:55 AM

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Do we know already which company that fuck up and who gave them permission? Kamon /k.
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post Apr 2 2025, 10:56 AM

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QUOTE(desmond2020 @ Apr 2 2025, 10:52 AM)
a burning incense, a hot engine surface and etc

thousand of potential spark point in a residential area.
*
cigarette bud. owai..
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post Apr 2 2025, 10:56 AM

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QUOTE(desmond2020 @ Apr 2 2025, 10:36 AM)
usually gas company will put additive, ayam forget the name, but it smell really terrible so that people will notice the leak
*
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.
desmond2020
post Apr 2 2025, 10:57 AM

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QUOTE(brkli @ Apr 2 2025, 10:56 AM)
cigarette bud. owai..
*
if it is a cigarette when dude was chilling outside, dude need year of stay in ICU if not KO on the spot
FreedomSeeker
post Apr 2 2025, 11:01 AM

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QUOTE(Skidd Chung @ Apr 2 2025, 10:34 AM)
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.
*
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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QUOTE(desmond2020 @ Apr 2 2025, 10:40 AM)
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.
*
back hoe operated korek korek while smoking cigarette lo.....

typical construction site behaviour, brought into oil and gas environment
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post Apr 2 2025, 11:05 AM

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QUOTE(Porkycorgi5588 @ Apr 2 2025, 11:03 AM)
back hoe operated korek korek while smoking cigarette lo.....

typical construction site behaviour, brought into oil and gas environment
*
Actually has anyone bothered to chekc if they have a missing backhoe and foreign worker who hasn't checked in.....
desmond2020
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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.....
*
dude probably already check and now in thailand chilling
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QUOTE(kevintth @ Apr 2 2025, 08:50 AM)
I thought they already put so many AWAS signboards on the grass, yet people still go and dig around it?
Attached Image
*
You never play minesweeper?

Those with flag are the danger area, you just have to dig around area without flag confirm safe cool2.gif
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QUOTE(Raddus @ Apr 2 2025, 10:43 AM)
saw some drone image, the gas pipeline is actually sticking out of the ground where the crater is

somehow the pipe just snap in half

user posted image
user posted image
*
Interesting pic, but we dont know if that is the gas pipe or some other pipe beside the gas pipe. There might be more than 1 pipe running the same route.

For now, we can speculate but can't be sure until more details are out.
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QUOTE(Porkycorgi5588 @ Apr 2 2025, 11:03 AM)
back hoe operated korek korek while smoking cigarette lo.....

typical construction site behaviour, brought into oil and gas environment
*
Dey, the backhoe's diesel engine is already a source of ignition.
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QUOTE(Iconia18 @ Apr 2 2025, 10:47 AM)
Sometimes it depends on sale spec. Because its hard to reduce h2s until below 5 ppm. For utilization by industry the small h2s will just burn into sulfur dioxide a anyway. So they can accept that.

But still like you said. Its questionable approving residential area within couple of meters from gas line.

I even saw road already built crossing the line? If that is true thats even more irresponsible.
*
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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post Apr 2 2025, 11:09 AM

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QUOTE(desmond2020 @ Apr 2 2025, 11:05 AM)
dude probably already check and now in thailand chilling
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Salah.

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

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

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

But bonus if he isekai with a backhoe in a medieval world he will be the tauke now
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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.
*
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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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
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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...
*
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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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.
*
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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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.
*
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.
*
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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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.
*
Yup, 50kg per hour loss is usually not detectable by operator.
bamkai
post Apr 2 2025, 11:51 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...
*
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.
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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
*
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.
*
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.
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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.
*
Look at usj 3 entire stretch is all right next to the pipeline
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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?
*
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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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
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post Apr 2 2025, 12:41 PM

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Gila mia developer, Main2 sama itu gas pipe
Clubtoska
post Apr 2 2025, 12:42 PM

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Firstly, I know absolutely nothing about gas pipes & engineering. But I just needed to visualise the situation based on what some members on this post was saying. Is this what happened?

user posted image
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post Apr 2 2025, 12:42 PM

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QUOTE(omron @ Apr 2 2025, 12:08 PM)
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.
*
I notice in several areas in USJ and Putra Heights the distance of the houses from the centre line of the pipeline is something like 30 to 100 metres. sad.gif

SUSBoomwick
post Apr 2 2025, 12:52 PM

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QUOTE(Clubtoska @ Apr 2 2025, 12:42 PM)
Firstly, I know absolutely nothing about gas pipes & engineering. But I just needed to visualise the situation based on what some members on this post was saying. Is this what happened?

user posted image
*
Make sense
SUSAzurues
post Apr 2 2025, 12:53 PM

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So during public holiday also they busy digging?
poweredbydiscuz
post Apr 2 2025, 12:59 PM

 
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Unsurprisingly, now /ktards think they are pipe experts.
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post Apr 2 2025, 01:02 PM

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QUOTE(poweredbydiscuz @ Apr 2 2025, 12:59 PM)
Unsurprisingly, now /ktards think they are pipe experts.
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Every night do intense backdoor plumbing and pipe clashing, of cos experk
Porkycorgi5588
post Apr 2 2025, 01:13 PM

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QUOTE(Clubtoska @ Apr 2 2025, 12:42 PM)
Firstly, I know absolutely nothing about gas pipes & engineering. But I just needed to visualise the situation based on what some members on this post was saying. Is this what happened?

user posted image
*
bawah still keras.

how to lead to your scenario la?

user posted image
GagalLand
post Apr 2 2025, 01:15 PM

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Pn pas mca trying to topple madani

QUOTE(~min~ @ Apr 2 2025, 09:01 AM)
the comments section is more fun. paip bocor also can become tindas & ambil hak melayu story
*
Pain4UrsinZ
post Apr 2 2025, 01:16 PM

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QUOTE(Porkycorgi5588 @ Apr 2 2025, 01:13 PM)
bawah still keras.

how to lead to your scenario la?

user posted image
*
since every one in /k semua automatic become expert, i want to comment also, conlanfirm underground soil movement from the nearby housing project and salah Hujan. they just need 1mm movement slowly welding point broken

This post has been edited by Pain4UrsinZ: Apr 2 2025, 01:17 PM
sportivo
post Apr 2 2025, 01:17 PM

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QUOTE(poweredbydiscuz @ Apr 2 2025, 12:59 PM)
Unsurprisingly, now /ktards think they are pipe experts.
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🤣plenty of O&G civil engineers
truly hidden komodo dragon & crouching tiger biscuit 🤪
keyibukeyi
post Apr 2 2025, 01:17 PM

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Raya eve
Play mercun
??????
Kabooom
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post Apr 2 2025, 01:17 PM

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Inb4 contractor apa race?
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post Apr 2 2025, 01:22 PM

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QUOTE(keyibukeyi @ Apr 2 2025, 01:17 PM)
Raya eve
Play mercun
??????
Kabooom
*
lol, actually ayam quite surprised it took so long for this theory to come up
keyibukeyi
post Apr 2 2025, 01:23 PM

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QUOTE(Raddus @ Apr 2 2025, 10:43 AM)
saw some drone image, the gas pipeline is actually sticking out of the ground where the crater is

somehow the pipe just snap in half

user posted image
user posted image
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Wind blow to housing area, resident got smell any gas leak?
keyibukeyi
post Apr 2 2025, 01:24 PM

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QUOTE(loserguy @ Apr 2 2025, 01:22 PM)
lol, actually ayam quite surprised it took so long for this theory to come up
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Cuti la bang, kasi chance la
Porkycorgi5588
post Apr 2 2025, 01:27 PM

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QUOTE(Pain4UrsinZ @ Apr 2 2025, 01:16 PM)
since every one in /k semua automatic become expert, i want to comment also, conlanfirm underground soil movement from the nearby housing project and salah Hujan. they just need 1mm movement slowly welding point broken
*
if like this also not possible.
unlike city area, there are no concrete slab or road to hide sinkholes.

if the soil below the pipe give way due to development, the surrounding would have sunk way before the cavity below become a possible source of pipe stress and pipe snap. but need to ask hotdayum la. he sexpert in digging his waifu punya lobang

user posted image
keyibukeyi
post Apr 2 2025, 01:31 PM

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Heavy truck housing project belum kira lagi, soil movement, why got road across that piping lulz

This post has been edited by keyibukeyi: Apr 2 2025, 01:32 PM
sakuraboo
post Apr 2 2025, 01:35 PM

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QUOTE(Clubtoska @ Apr 2 2025, 12:42 PM)
Firstly, I know absolutely nothing about gas pipes & engineering. But I just needed to visualise the situation based on what some members on this post was saying. Is this what happened?

user posted image
*
Immediately thought of the same thing

Often leverage easier to break stuff
hotdayum
post Apr 2 2025, 01:40 PM

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QUOTE(Porkycorgi5588 @ Apr 2 2025, 01:27 PM)
if like this also not possible.
unlike city area, there are no concrete slab or road to hide sinkholes.

if the soil below the pipe give way due to development, the surrounding would have sunk way before the cavity below become a possible source of pipe stress and pipe snap. but need to ask hotdayum la. he sexpert in digging his waifu punya lobang

user posted image
*
Ayam tatau my job is mop floor whenever and wherever boss 2feidei tells me to mop
teehk_tee
post Apr 2 2025, 01:42 PM

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QUOTE(NEP1971 @ Apr 2 2025, 08:44 AM)
Let’s see what /k experts comment
*
/k a lot expert
Porkycorgi5588
post Apr 2 2025, 01:44 PM

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QUOTE(hotdayum @ Apr 2 2025, 01:40 PM)
Ayam tatau my job is mop floor whenever and wherever boss 2feidei tells me to mop
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arwah baik orangnya notworthy.gif notworthy.gif innocent.gif innocent.gif
brkli
post Apr 2 2025, 01:48 PM

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QUOTE(Pain4UrsinZ @ Apr 2 2025, 01:16 PM)
since every one in /k semua automatic become expert, i want to comment also, conlanfirm underground soil movement from the nearby housing project and salah Hujan. they just need 1mm movement slowly welding point broken
*
not due to earthquake at Myanmar and acheh? or maybe some butterfly flap wings across the globe.
ze2
post Apr 2 2025, 01:50 PM

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QUOTE(keyibukeyi @ Apr 2 2025, 01:17 PM)
Raya eve
Play mercun
??????
Kabooom
*
U mean a leak and mercun and kaboom ?
MasBoleh!
post Apr 2 2025, 01:59 PM

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QUOTE(keyibukeyi @ Apr 2 2025, 01:23 PM)
Wind blow to housing area, resident got smell any gas leak?
*
Is odourless.

I believe the leakage happened for sometimes, just tiny leakage… and it accumulated till yesterday morning where something sparks it
hcmalaya
post Apr 2 2025, 01:59 PM

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QUOTE(kevintth @ Apr 2 2025, 08:50 AM)
I thought they already put so many AWAS signboards on the grass, yet people still go and dig around it?
Attached Image
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user posted image
SUSfuzzy
post Apr 2 2025, 02:01 PM

*pew pew pew*
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QUOTE(NEP1971 @ Apr 2 2025, 08:44 AM)
Let’s see what /k experts comment
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The same k/ experts that claim it was petrol station burn until they got proven wrong whistling.gif
desmond2020
post Apr 2 2025, 02:12 PM

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QUOTE(fuzzy @ Apr 2 2025, 02:01 PM)
The same k/ experts that claim it was petrol station burn until they got proven wrong  whistling.gif
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even a MP named wong chen also said it is a petronas station
hcmalaya
post Apr 2 2025, 02:13 PM

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https://www.mdpi.com/2076-3417/14/9/3609#:~...ried%20pipeline.


Untuk bacaan sahaja
Tiada kaitan dgn yg hidup mati atau peristiiwa berlaku
hotdayum
post Apr 2 2025, 02:19 PM

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QUOTE(Porkycorgi5588 @ Apr 2 2025, 01:44 PM)
arwah baik orangnya  notworthy.gif  notworthy.gif  innocent.gif  innocent.gif
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user posted image
SUSfuzzy
post Apr 2 2025, 02:31 PM

*pew pew pew*
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QUOTE(desmond2020 @ Apr 2 2025, 02:12 PM)
even a MP named wong chen also said it is a petronas station
*
He then claim it's not subang jaya OK.

Sarahan other people.
Porkycorgi5588
post Apr 2 2025, 02:36 PM

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QUOTE(desmond2020 @ Apr 2 2025, 02:12 PM)
even a MP named wong chen also said it is a petronas station
*
I didnt know Putra Heights ADUN same as Kota Kemuning ADUN same as Sri Muda ADUN until that day rclxub.gif rclxub.gif rclxub.gif

You'd think Putra heigts ADUN would be KUALA LANGAT OR PUCHONG
machomama
post Apr 2 2025, 02:48 PM

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QUOTE(dest9116 @ Apr 2 2025, 08:38 AM)
Ground zero at left hand side they dig right hand side

Infront is the shoplot, is to the left

Nampak macam developer not responsible wei
*
agreed +/- coupla meters

user posted image

This post has been edited by machomama: Apr 2 2025, 02:49 PM
kevintth
post Apr 2 2025, 02:51 PM

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QUOTE(hcmalaya @ Apr 2 2025, 01:59 PM)
user posted image
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ya la sigboard ignore... no risk nobody care... now u see what happened!

just like you put AWAS or danger sign on the power fence... will anyone go touch it lol...
FreedomSeeker
post Apr 2 2025, 03:39 PM

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QUOTE(Skidd Chung @ Apr 2 2025, 12:03 PM)
In the industry, but not an expert. Just average joe. My opinions are based on my experience, not 'expertise'.
*
So i take it as u 50/50 in this gas pipe field. Your 1st answer to my earlier question is they can’t detect small leak then ur 2nd answer is they can find small leak but decide not to shut it down for repair due to it is high value industry.

Now the question is does the small single gas leak like u said got the risk of explosion or not?

Not shutting down the pipe for 1 small leak repair work is common industry practice or just ur personal opinion?


milolauda
post Apr 2 2025, 04:25 PM

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so , fireworks together with stressed gas pipeline = kaboom , a damage that cost victims a total of rm1,000,000,000 in total loss


vhs
post Apr 2 2025, 08:42 PM

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inb4 a kid threw fire cracker into the hole
Ttbatdtptsm
post Apr 2 2025, 10:31 PM

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user posted image
Still noone wants to admit
kamfoo
post Apr 2 2025, 10:32 PM

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Let police investigate
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QUOTE(Ttbatdtptsm @ Apr 2 2025, 10:31 PM)
user posted image
Still noone wants to admit
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Siapa admit dia might bankrupt
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post Apr 3 2025, 12:15 AM

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QUOTE(ZeroSOFInfinity @ Apr 2 2025, 09:45 AM)
Possible. But still can't discard theory the digging could have contributed to fracturing the pipe somewhere due to pressure applied
*
I saw some other image of similar gas piping installation.

Apparently the piping tanam is just merely 3-3.5 feet from the top of the tarmac….

Damn a backhoe would have ruptured it in minutes with that kinda shallow installation ohmy.gif
Skidd Chung
post Apr 3 2025, 08:05 AM

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QUOTE(FreedomSeeker @ Apr 2 2025, 03:39 PM)
So i take it as u 50/50 in this gas pipe field. Your 1st answer to my earlier question is they can’t detect small leak then ur 2nd answer is they can find small leak but decide not to shut it down for repair due to it is high value industry.

Now the question is does the small single gas leak like u said got the risk of explosion or not?

Not shutting down the pipe for 1 small leak repair work is common industry practice or just ur personal opinion?
*
Let me be clear and clarify in case you misunderstand my statements as implying that companies are being irresponsible because of profit. It is a step by step procedural framework of assessment and conclusion. Not a blanket 'SHUTDOWN' if leak detected policy.

A small leak is undetectable by operators running a large volume high pressure pipeline. The only way to detect such a leak is that you walk the entire line meter by meter and detect via smell or instrument like gas meters. There isn't a special alarm that goes 'beep boop' when there is a small leak. That is what I meant when I said a small leak is 'undetectable' by the operators sitting in a control room looking at gauges and running parameters in their DCS screen.

Now let's just say a small leak is detected by chance by a passerby or during a routine inspection in a public urban area. They aren't going to go 'FULL EMERGENCY SHUTDOWN'. No, instead they will assess the situation and see if they can fix it while the pipe is live. Can they disperse the gas or dilute it so that they can work while the leak is present. Based on the risk assessment and job scope, they might lower the pressure to reduce the leak, to work on it. Or if it isn't possible, they might assess that the leak is maybe too dangerous to work on while the pipe is 'Live', so that will then escalate to planning of a pipe shutdown for a scheduled maintenance. So based on assessment, if a leak is assessed to be a danger to public and asset, of course the best thing to do is plan a shutdown ASAP.

An explosion occurs when there is an accumulation of flammable gas in an oxygen rich environment and a source of ignition is introduced. A small leak in an open area won't cause an explosion if it is disperse by the wind. But a small leak underground, it might accumulate in crevices or in loose soil. We don't know if this was due to a sudden rupture causing high volume of gas to be released then ignited or caused by a small leak slowly saturating the ground then ignited when a car passed by.

Small pipe leaks are a common industry experience not only for gas pipes but for ALL pipes in general. If a leak is detected, of course they won't ignore it, but will try to mitigate it. But don't expect an 'EMERGENCY SHUT DOWN' for every leak is found. If it can be fixed 'Live', it will be done so, if cannot, then a planned shutdown with all stakeholders informed and alerted. Most leaks can be just 'clamped' or 'sealed' off when it is small enough. So a shutdown of a billion dollar industry isn't necessary.

If you want an example of gas pipes not being shutdown even if there are multiple small leaks. Did you know that there are hundreds of kilometers of natural gas pipes under the sea? Where a leak can only be detected by divers looking for bubbles? Do you think a pipeline as important as supplying an entire country worth of gas will be shutdown for a small leak under the sea?

So I hope this clears up any misunderstanding of how pipes in the industry works.

Yes, if dangerous to public and asset, shut it down.

If not dangerous, plan a work to mitigate leak while pipe is still LIVE.

Small leaks are difficult to detect.

Some small leaks are acceptable.

This post has been edited by Skidd Chung: Apr 3 2025, 08:10 AM
FreedomSeeker
post Apr 3 2025, 09:02 AM

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QUOTE(Skidd Chung @ Apr 3 2025, 08:05 AM)
Let me be clear and clarify in case you misunderstand my statements as implying that companies are being irresponsible because of profit. It is a step by step procedural framework of assessment and conclusion. Not a blanket 'SHUTDOWN' if leak detected policy.

A small leak is undetectable by operators running a large volume high pressure pipeline. The only way to detect such a leak is that you walk the entire line meter by meter and detect via smell or instrument like gas meters. There isn't a special alarm that goes 'beep boop' when there is a small leak. That is what I meant when I said a small leak is 'undetectable' by the operators sitting in a control room looking at gauges and running parameters in their DCS screen.

Now let's just say a small leak is detected by chance by a passerby or during a routine inspection in a public urban area. They aren't going to go 'FULL EMERGENCY SHUTDOWN'. No, instead they will assess the situation and see if they can fix it while the pipe is live. Can they disperse the gas or dilute it so that they can work while the leak is present. Based on the risk assessment and job scope, they might lower the pressure to reduce the leak, to work on it. Or if it isn't possible, they might assess that the leak is maybe too dangerous to work on while the pipe is 'Live', so that will then escalate to planning of a pipe shutdown for a scheduled maintenance. So based on assessment, if a leak is assessed to be a danger to public and asset, of course the best thing to do is plan a shutdown ASAP.

An explosion occurs when there is an accumulation of flammable gas in an oxygen rich environment and a source of ignition is introduced. A small leak in an open area won't cause an explosion if it is disperse by the wind. But a small leak underground, it might accumulate in crevices or in loose soil. We don't know if this was due to a sudden rupture causing high volume of gas to be released then ignited or caused by a small leak slowly saturating the ground then ignited when a car passed by.

Small pipe leaks are a common industry experience not only for gas pipes but for ALL pipes in general. If a leak is detected, of course they won't ignore it, but will try to mitigate it. But don't expect an 'EMERGENCY SHUT DOWN' for every leak is found. If it can be fixed 'Live', it will be done so, if cannot, then a planned shutdown with all stakeholders informed and alerted. Most leaks can be just 'clamped' or 'sealed' off when it is small enough. So a shutdown of a billion dollar industry isn't necessary.

If you want an example of gas pipes not being shutdown even if there are multiple small leaks. Did you know that there are hundreds of kilometers of natural gas pipes under the sea? Where a leak can only be detected by divers looking for bubbles? Do you think a pipeline as important as supplying an entire country worth of gas will be shutdown for a small leak under the sea?

So I hope this clears up any misunderstanding of how pipes in the industry works.

Yes, if dangerous to public and asset, shut it down.

If not dangerous, plan a work to mitigate leak while pipe is still LIVE.

Small leaks are difficult to detect.

Some small leaks are acceptable.
*
Very detail explanation. So can i take it as what u say here is common practice for how pipe industry deal with leakage not just ur personal opinion?
Skidd Chung
post Apr 3 2025, 09:26 AM

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QUOTE(FreedomSeeker @ Apr 3 2025, 09:02 AM)
Very detail explanation. So can i take it as what u say here is common practice for how pipe industry deal with leakage not just ur personal opinion?
*
Yes, in OnG industry based on personal experience.


ate
post Apr 3 2025, 09:36 AM

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This my daily commute going back home to, last drive here was on 27/3.

I still have the video of dashcam driving through here on 27/3.

My wife has a friend who is 200m from the burst, total lost.
FreedomSeeker
post Apr 3 2025, 10:07 AM

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QUOTE(Skidd Chung @ Apr 3 2025, 09:26 AM)
Yes, in OnG industry based on personal experience.
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RT8081
post Apr 3 2025, 10:13 AM

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QUOTE(Skidd Chung @ Apr 3 2025, 08:05 AM)
Let me be clear and clarify in case you misunderstand my statements as implying that companies are being irresponsible because of profit. It is a step by step procedural framework of assessment and conclusion. Not a blanket 'SHUTDOWN' if leak detected policy.

A small leak is undetectable by operators running a large volume high pressure pipeline. The only way to detect such a leak is that you walk the entire line meter by meter and detect via smell or instrument like gas meters. There isn't a special alarm that goes 'beep boop' when there is a small leak. That is what I meant when I said a small leak is 'undetectable' by the operators sitting in a control room looking at gauges and running parameters in their DCS screen.

Now let's just say a small leak is detected by chance by a passerby or during a routine inspection in a public urban area. They aren't going to go 'FULL EMERGENCY SHUTDOWN'. No, instead they will assess the situation and see if they can fix it while the pipe is live. Can they disperse the gas or dilute it so that they can work while the leak is present. Based on the risk assessment and job scope, they might lower the pressure to reduce the leak, to work on it. Or if it isn't possible, they might assess that the leak is maybe too dangerous to work on while the pipe is 'Live', so that will then escalate to planning of a pipe shutdown for a scheduled maintenance. So based on assessment, if a leak is assessed to be a danger to public and asset, of course the best thing to do is plan a shutdown ASAP.

An explosion occurs when there is an accumulation of flammable gas in an oxygen rich environment and a source of ignition is introduced. A small leak in an open area won't cause an explosion if it is disperse by the wind. But a small leak underground, it might accumulate in crevices or in loose soil. We don't know if this was due to a sudden rupture causing high volume of gas to be released then ignited or caused by a small leak slowly saturating the ground then ignited when a car passed by.

Small pipe leaks are a common industry experience not only for gas pipes but for ALL pipes in general. If a leak is detected, of course they won't ignore it, but will try to mitigate it. But don't expect an 'EMERGENCY SHUT DOWN' for every leak is found. If it can be fixed 'Live', it will be done so, if cannot, then a planned shutdown with all stakeholders informed and alerted. Most leaks can be just 'clamped' or 'sealed' off when it is small enough. So a shutdown of a billion dollar industry isn't necessary.

If you want an example of gas pipes not being shutdown even if there are multiple small leaks. Did you know that there are hundreds of kilometers of natural gas pipes under the sea? Where a leak can only be detected by divers looking for bubbles? Do you think a pipeline as important as supplying an entire country worth of gas will be shutdown for a small leak under the sea?

So I hope this clears up any misunderstanding of how pipes in the industry works.

Yes, if dangerous to public and asset, shut it down.

If not dangerous, plan a work to mitigate leak while pipe is still LIVE.

Small leaks are difficult to detect.

Some small leaks are acceptable.
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Thanks for sharing. May i clarify further on the method of repair.

Will the use of any equipment to fix it can create safety hazard in the area..say a spark when trying to seal the pipes ?
craxors
post Apr 3 2025, 10:17 AM

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I tell u. Even though many ppl fail SPM, their science knowledge on gas leakage is more power than PHD!

level black widow.
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Ttbatdtptsm
post Apr 3 2025, 10:56 AM

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Only utusan i think interveiwd the victims that confirm there was an intrusion. Others Like the star , NST , mkini , bfm goyang kaki ?!!
SUSifourtos
post Apr 3 2025, 11:04 AM

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QUOTE(ZeroSOFInfinity @ Apr 2 2025, 08:56 AM)
Possible theory - 28 to 30 March (afternoon) digging to place the sewerage pipes. Could have fractured the gas pipe nearby due to pressure during digging.

30 March (evening) - keep equipment because Raya on Monday (31 March). Car video at night showed nothing there.

Between 30 March to 1 April - gas leaking, no worker detect or smell because not working.

1 April - pressure hit critical level, and boom.
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Your logic very flawed

Gas leak will contribute pressure grow????

So my tyre low pressure I go leak gas??



The leak gas already happen

1 raya mercun nearby gg all
Virlution
post Apr 3 2025, 11:36 AM

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can macgyver use chocolate or bubble gum to seal the slow leak?

 

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