Re: Re: [MW:29022] Interpretation available (IX-04-03)

Hi,

I have did with 400 deg C for 2hours without any interupption for P5A materials and also hydrogen bake out has been ensured in B 31.8.

Thanks. 

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Regards,

Mohamed Muneeb Mahaboob

CSWIP 3.2-89247/2 

IRCA-9001:2015 LA

ASNT-NDT-L2-RTFI-RT-UT-MT-PT.

SAP#:70021650 APs:JAPID, QCS & QCI.

E muneebslsa@gmail.com M +91-636-955-7189

''If you know any art by any means then SCULPT IT - no matter how cheap or useless it is - JUST SCULPT IT, you will never know when experts will be on demand'' 

 

From: Kannayeram Gnanapandithan

Date: 2019-02-01 09:31

To: materials-welding

Subject: Re: [MW:29021] Interpretation available (IX-04-03)

50 to 100 degree above preheat temp. Holding time minimum 30minutes . As per ASME it is not essential variable but it is good Engineering practice for carbon steel above 40mm, 

On Fri, 1 Feb 2019 8:25 am bilal wahla <bilalwahla047@gmail.com wrote:

Dear Friend,

Purpose of post heat is to DIFFUSE hydrogen after welding , for this purpose we hold our joint at 93-80 degree for 1 hour after completion of welding. 

PWHT always Performed below Lower Transformation Temperature, PWHT and Post Heat is different things.

Kind Regards 

On Tue, Jan 29, 2019 at 2:27 PM George Dilintas <dilintas@gmail.com> wrote:

Most propably your client wants you to perform a hydrogen bake-out treatment 

Στις Δευ, 7 Ιαν 2019, 08:58 ο χρήστης muneebslsa@gmail.com <muneebslsa@gmail.com> έγραψε:

Hi All,

Client specification calls for post weld baking/heating (not stated as PWHT) of a P No.1 material after welding for a specific reason. Does it consider a PWHT condition as per ASME Sec IX QW-407.1(a) Point#2, i.e PWHT below lower transformation temperature? If it is considered as PWHT as per the clause above, then would a PQR with 200 Deg C PWHT qualifies to perform PWHT on the weld at 600 Deg C which is below the lower transformation temperature of P No.1 keeping all other essential variables same. Note: Though there is an interpretation available (IX-04-03), it doesn't state the answer instead it refers to QW-407.1 (throwing the ball away wisely).

Originally posted in Linkedin

by

Ishack Mohammed Ismail 

• 1st

Technical Representative at ABS Consulting

4d • Materials-Welding

---

Regards,

Mohamed Muneeb Mahaboob

CSWIP 3.2-89247/2 

IRCA-9001:2015 LA

ASNT-NDT-L2-RTFI-RT-UT-MT-PT.

SAP#:70021650 APs:JAPID, QCS & QCI.

E muneebslsa@gmail.com M +91-636-955-7189

''If you know any art by any means then SCULPT IT - no matter how cheap or useless it is - JUST SCULPT IT, you will never know when experts will be on demand'' 

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Respected Sir,

Please find the enclosed file.

Bilal Arshad Wahla

P.W.H.T Engineer

SEPCO Electric Power Construction Corporation

Saudi Aramco JAZAN IGCC Power Block Project (EPC-4)

Jazan Economic City, KSA 

Mobile: +966 591317207

Email: bilalwahla.047@gmail.com

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