Hello, ZHY370137,
I'm not sure why you're asking this question is general forum, when your contract is bound by your clients' specifications and project requirements. Aramco has very comprehensive specifications for almost everything. If Aramco SAES-W-012 is applicable for your project you need to what's needed as per this spec.
What's the design code, of the pipeline B-31.4 or 31.8? And what're the Aramco specifications applicable?
Usually for sour service hardness control is "mandatory" to mitigate the HIC. One of the effective ways to ensure hardness control is PWHT, unless vendor is able to prove otherwise.
Appreciate your response.
Thanks.
Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Engineering Specialist ,
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of zhy370137@gmail.com
Sent: Wednesday, September 14, 2016 10:59 AM
To: Materials & Welding
Subject: [MW:25392] PWHT
Dear sir
good day
pls hlep us confirm whether we need apply PWHT for every girth weld according to your experience.
pipe ：API 5 L X60 HIC resistant pipe
welding method: CRC automatic
pipeline diameter and thickness:20inch 0.4inch(10MM)
medium：sour condensate
pressure:960psi
pipeline distance：164km between two gas plant in saudi （safaniya plant to berris gas plant)
client：saudi aramco
CNPC daqing saudi
QAQC
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