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Participant

Join Date: Feb 2016
Posts: 1

Post Heat Treatment

02/25/2016 7:40 AM

Hi all
cross country Pipeline project with pipe Dia 100"(2500 mm) and wall thickness 0.82"(20.66 mm) Thickness
Our standard for welding and Inspection is API 1104 and ASME B31.4
The w.p.s is done without post heat treatment and the preheat is only until 100 C.
IS this pipe with this thickness need Heat treatment and we have to change the specification or we can continue by this W.P.S
The W.P.S is 6010 for root and 7010 for Hot filling and cap

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Guru

Join Date: Oct 2008
Posts: 39041
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#1

Re: Post heat treatment

02/25/2016 8:54 AM

Go ahead. It'll be fine.

Just tell anyone who asks that Mr. lyn said it was OK.

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Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain, and now disconnecting as Little England and Wales (not too sure about Wales bit, either). Kettle's on.
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#2

Re: Post heat treatment

02/25/2016 10:11 AM

It would be most unwise to diverge from the pre-approved procedure, and the motive for doing so is questionable, too.

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Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
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#3

Re: Post heat treatment

02/25/2016 11:30 AM

You need to ask whatever local agencies have jurisdiction, as well as observe any contract documents.

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New Zealand - Member - Kiwi Popular Science - Weaponology - New Member Engineering Fields - Power Engineering - New Member Engineering Fields - Electrical Engineering - New Member

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Location: Auckland, New Zealand
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#4

Re: Post heat treatment

02/25/2016 3:49 PM

How long's the pipe?

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jack of all trades
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Guru

Join Date: Oct 2008
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#5
In reply to #4

Re: Post heat treatment

02/25/2016 4:53 PM

All the way!

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Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain, and now disconnecting as Little England and Wales (not too sure about Wales bit, either). Kettle's on.
Posts: 25652
Good Answers: 673
#6

Re: Post heat treatment

02/25/2016 4:59 PM

Is this an ordinary pipe or a LynDoorTM special pipe?

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Guru

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#7
In reply to #6

Re: Post heat treatment

02/25/2016 5:39 PM

LynDoor™Industries Cross Country Division was forced to cease operations shortly after being launched. We no longer supply 100"(2500 mm) and wall thickness 0.82"(20.66 mm pipe in cross country lengths due to logistical/transportation issues.

After derailing three different trains trying to transport the pipeline on less than straight tracks, we were forced to convert the cross country line into sections of long pipe for ease of handling.

Believe me, it was quite a job painting over all those "Cross Country" designations and re-marking the pipe as "Long Pipe". Then re-applying rust in those areas was no small task either.

No, we "no-bid" the job.

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Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain, and now disconnecting as Little England and Wales (not too sure about Wales bit, either). Kettle's on.
Posts: 25652
Good Answers: 673
#8

Re: Post Heat Treatment

02/28/2016 4:51 PM

Another option would be to use a train of tank cars instead. Like a sort of pipe-on-wheels.

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