lap time between root & hot pass

[ahmed boh]

Hi all,

hot pass was performed after 20 mn of hot pass.

the client recommend to cut out this weld because the maximum of lap time between root and hot is 10 mn.

I tried ti explain him it is no problem is no big difference than 10 mn. pls help me if I did right??

Ahmed R

[george....@gr.bureauveritas.com]

The important factor is the interpass temperature and not the time, If the temperature before the hot pass was lower than the interpass one, no issue

best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor

I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS PIRAEUS - GREECE

Tel: +30 210 40 63 113 /4 /5
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"'ahmed boh' via Materials & Welding" ---12/01/2016 10:41:36---Hi all, hot pass was performed after 20 mn of hot pass.

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[Noe Mota]

You won't see much of a difference between the 10 and the 20 minutes time lapse just the interpass temperature difference, the point is you need to strictly follow what you qualified as welding procedure.

Regards

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