Re: [MW:31699] Preheat Requirements for in service pressure vessel ,

During the repair, you have to implement the same WPS used for production welds..

The depth of the repair may be smaller than the total weld thickness but the PWHT depends on the base metal thickness and not on the deposited metal thickness

Στις Τρί, 3 Νοε 2020 στις 5:51 π.μ., ο/η senthil vel <senthil7tlnd@gmail.com> έγραψε:

Dear Sir

As per design the vessel have no PWHT ,

During Repair Preheat Need?

On Mon, 2 Nov 2020, 14:30 NIKHIL THOMAS JOY, <nikhil.thomasjoy@gmail.com> wrote:

Dear experts,

Greetings of the day

I have a query related to the F Number in welding process.

IF I QUALIFY A WELDER WITH F No.6, He can weld all F.No-6.

But, if I Qualify with F No.5, can he weld F No.1 to 4.

Experts please reply as per code reference.

BEST REGARDS,

NIKHIL THOMAS JOY

IWI LIMITED 

ADNOC-WHRP

0544975526

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Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

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

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

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