RE: [MW:13580] Ultrasonic Testing & Intergranular Corrosion Testing; G28 Method A for CRO Welding on Carbon Steel with Inconel 625

Hi Abdul Ghafor Mohamad,

ASME Sec-IX is the procedure qualification code, not the code for design or construction of the components. If the component is intended for offshore applications and API-5LD- Specification for CRA Clad or Lined Steel Pipe is applicable design document then corrosion testing (clause 8.2) as stated below would be required.

May be it would be a good idea to look at the design documents for details.

Thanks

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist & Consultant

Ontario, Canada.

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

Corrosion Testing

A corrosion sensitivity test shall be performed as a manufacturing procedure qualification test (MPQT) on the CRA layers of austenitic steel and N i-base alloy as described below. The purpose of this test is to assure proper manufacturing procedures for austenitic steel and Ni-base alloys. It is not a test to determine susceptibility for use with a particular environment.

a) Summary of test procedure. The testing procedure shall conform to the requirements of the latest editions of ASTM A262, Practice E or Practice B. or ASTM G28, Method A or ASTM G48, Method A (Section 8), whichever is suitable for the cladding or liner material and as agreed between the purchaser and manufacturer. The method thatis used shall be agreed to between the purchaser and the manufacturer. Other practices may be agreed upon.

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Eswaran samikannu
Sent: Saturday, January 28, 2012 4:55 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:13577] Ultrasonic Testing & Intergranular Corrosion Testing; G28 Method A for CRO Welding on Carbon Steel with Inconel 625

No requirement of UT & Intergranular corrosion tests.

Thanks

Regards

E.Jegan

Hp-65-96163449

From: Ghafor Mohamad <ghaformohamad@gmail.com>
To: materials-welding@googlegroups.com
Sent: Saturday, 28 January 2012 2:28 PM
Subject: [MW:13576] Ultrasonic Testing & Intergranular Corrosion Testing; G28 Method A for CRO Welding on Carbon Steel with Inconel 625

Dear Experts

I am qualified a PQR for CRO Welding using Inconel 625 on Carbon Steel plate. As per ASME IX, mandatory test is:

Dye Penetration Test
Transverse Side Bend Test
Chemical Analysis
Hardness (location may refer to ISO 15056 Fig 6 for NACE req.)
Macro Etch photo

What I am confusing is that Intergranular Corrosion (G28 Method A) and Ultrasonic Test is applicable to conduct or not?

Thanks

BR; Abdul Ghafor Mohamad

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