PWHT required for HF service

[Hrushikesh Sangamnerkar]

Dear expert,

Query:

 

Service: HF

MoC: SA 516 Gr 70

P No. - 1

Thickness - 40mm

Is PWHT specifically required for HF service?

Client has not mentioned anything about Lethal or Sour service.

Pl suggest.

Regards,

[PGoswami]

If you’re following API RP-751, then yes. Look at clause 3.3 of this RP, for guidance on PWHT for HF service. What’s the precise service , HF Alkylation?? Ask your client to clarify.

 

Appreciate your response.

 

Thanks.

 

P.Goswami.P.Eng, IWE.

Welding & Metallurgical Specialist

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgos...@quickclic.net,pradip....@gmail.com

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[Mohamed Muneeb]

Greetings,

For your mentioned thickness need pwht. 

If you ask regardless to thickness for hf which is to be understood hydrogen service yes required but not necessarily for p no 1,but yes our client requires for p3, 4,5abc.

So its your clients requirements and his spec to be followed. 

Thanks 

Muneeb 

--

[ajay pathak]

Since the thk is more than 38 mm, PWHT is required irrespective of service as per Div.1.

Regards,

Ajay Pathak

On Sat, Aug 4, 2018 at 12:55 AM, PGoswami <pgos...@quickclic.net> wrote:

If you’re following API RP-751, then yes. Look at clause 3.3 of this RP, for guidance on PWHT for HF service. What’s the precise service , HF Alkylation?? Ask your client to clarify.

 

Appreciate your response.

 

Thanks.

 

P.Goswami.P.Eng, IWE.

Welding & Metallurgical Specialist

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgos...@quickclic.net,pradip....@gmail.com

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Hrushikesh Sangamnerkar
Sent: August 1, 2018 1:48 AM
To: Materials & Welding <materials-welding@googlegroups.com>
Subject: [MW:28154] PWHT required for HF service

 

Dear expert,

 

Query:

 

Service: HF

MoC: SA 516 Gr 70

P No. - 1

Thickness - 40mm

 

Is PWHT specifically required for HF service?

 

Client has not mentioned anything about Lethal or Sour service.

 

Pl suggest.

 

Regards,

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[Ramin Kondori]

NACE-01345  is a useful reference for HF and AHF applications.

 

Ramin  Kondori

Sr. QA/QC & Welding Engineer

-----------------------------------------------------------

PG-Dip. in Welding Engineering (IWE  AT  0070)

BSc. in Civil Engineering (IUT)

BGAS Painting Inspector

ASNT Level I&II

                        

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[Sankaran Sp]

Dear Friend,

Is it possible to avoid the martensite structure on HAZ area of base metal during hardafcing? if yes you can eliminate PWHT. During hard facing on 40.0mm thick base metal, more chance are there, martensite will be formed on HAZ area, so PWHT is essential one.  

Regards,

Sankaran.SP

Welding & Metallurgy expert

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[Kannayeram Gnanapandithan]

Any thickness greater than 38mm to be done SR.

[Souravbohray]

if weld joint thickness greater than thickness give UCS 56 -1 asme sec8 div 1 2017. ie 38mm .

[George Dilintas]

what is the design & construction Code/Standard?

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Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis