- by the diffusion of atomic hydrogen
- by the capability to sustain the pressure of molecular hydrogen by plastic transformation
Regarding the belowmentionedI need to confirm that HIC is not controlled by hardness control but by steel chemistryAll shall be reminded that wet sour service induceSulfide stress crackingHydrogen induced crackingStress oriented hydrogen induced crackingHydrogen blisteringNace MR 0175 or nace MR 0103 only control ssc, please read these code introduction /prefaceAhmed eissaMaterials and Corrosion Engineer--
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
--
http://www.linkedin.com/groups/MaterialsWelding- 122787?home=&gid=122787&trk= anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com .
To post to this group, send email to materials-welding@googlegroups.com .
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/ .f49f77aa-d202-4cc2-91c7- b5f1f828afcd%40googlegroups. com
For more options, visit https://groups.google.com/d/optout .
http://www.linkedin.com/groups/MaterialsWelding- 122787?home=&gid=122787&trk= anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com .
To post to this group, send email to materials-welding@googlegroups.com .
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/ 866914810.4904114. 1474907104598%40mail.yahoo.com .
For more options, visit https://groups.google.com/d/optout .
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To post to this group, send email to materials-welding@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/CAPOi40D8h6p9fJxADQA9iUi716b96mqALy8yzX6a602m7MQHWg%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.
No comments:
Post a Comment