Re: [MW:35672] CRA

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On 5 Jun 2025, at 2:03 PM, Raviraj Gohil <raviraj.gohil001@gmail.com> wrote:



Hi..

If your equipment in hydrogen service and Hydrogen Disbonding test is required..

On Wed, 4 Jun 2025, 14:26 Deerendra Karanth, <dkaranths@gmail.com> wrote:

Sir, 

With reference to your query regarding the required tests for corrosion resistant overlay procedure and performance qualification as per ASME Section IX, Table QW-453, in addition to the mentioned LPT and bend tests, the following supplementary tests are recommended—especially considering the application for overlay:

1. Chemical Analysis – As per ASME Section IX Figure QW-462.5(a) to verify composition of the deposited layer. Attached snapshot 

2. Hardness Survey – In accordance with NACE MR0175 to ensure compatibility with sour service, if applicable.

3. Metallographic Examination – To assess overlay quality, dilution, and fusion characteristics.

4. Microstructure Examination – Typically conducted at 100X to 500X magnification.

5. Ultrasonic Testing (UT) – To check for disbondment between the base metal and overlay.

Please ensure these tests are reviewed in alignment with project or client-specific requirements.

BR, 

Deerendra 

<gmail_images20250604_142122.png>

On Wed, 4 Jun, 2025, 13:50 Elavarasan Mech, <elavarasan1861994@gmail.com> wrote:

Dear all 

Please clarify below 

What's are the test required for corrosion resistant overlay 

procedure and performance qualification

As per ASME SEC IX TABLE QW -453 

LPT , BEND TEST -PROCEDURE QUALIFICATION 

BEND TEST - PERFORMANCE QUALIFICATION 

if any additional test required  please gudie me 

We useing this PQR for flange groove overlay 

Regards 

ELAVARASAN

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