Non Destructive Examination (NDE) for Welding at Valves

[From:http://instrumentation.web.id] [Author:admin] [Date:11-08-16] [Hit:]

See also,Non Destructive Test (NDE) for Casting and Forging Valves Body

 

All welds at valve body or bonnet shall be 100% NDE as per BPV Section VIII Division 1.

 

Any welding (including procedure, performance of welder and operator) shall be as per ASME B31.3. Examination of welding shall be as per BPV Code, Section V.Welds which are suitable for RT shall be radiographed. Welds which are not suitable for RT, but are suitable for ultrasonic examination shall be examined using ultrasonic and magnetic particle examined. Welds which are not suitable for ultrasonic examination shall be examined using magnetic particle examination for every layer.”

 

Radiography procedure shall be as per ASTM E 94 & ASTM E 142
Magnetic Particle Examination procedure shall be as per ASTM E709 and ASTM A 275
Liquid Penetrant Examination procedure shall be as per ASTM E 165
Ultrasonic Examination shall be as per ASTM A 388 and ASTM A 609

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SHANGHAI SANZHOU AUTOMATION DASH CO.,LTD
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