Hi Nilesh,
Since the casing is carbon steel base material, so due to caustic service their is a possibility of "Caustic Stress corrosion cracking" when temp is about 80 Deg C, and due to its inherent stresses..
Thanks and regards,
Venugopal
Singapore
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On Thu, Jul 17, 2008 at 1:05 PM, Darji Nilesh (Mumbai - Machinery) <N.Darji@ticb.com> wrote:
In Process data sheet, Process has asked to perform PWHT for Centrifugal pump Material due to caustic service.
Pump casing material is A 216 Gr WCB.
Can any one clarify why It is required !! any specific reason !!
Regards,
Nilesh.
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