Re: [MW:25455] RE: 25392] PWHT

Regarding the belowmentioned

I need to confirm that HIC is not controlled by hardness control but by steel chemistry

All shall be reminded that wet sour service induce

Sulfide stress cracking

Hydrogen induced cracking

Stress oriented hydrogen induced cracking

Hydrogen blistering

Nace MR 0175 or nace MR 0103 only control ssc, please read these code introduction /preface

Ahmed eissa

Materials and Corrosion Engineer

Sent from Yahoo Mail on Android

On Thu, 15 Sep, 2016 at 5:38 am, pgoswami
<pgoswami@quickclic.net> wrote:

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

pgoswami@quickclic.net

pradip.goswami@gmail.com

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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