Tuesday, September 27, 2011

RE: [MW:12556] PWHT Requirement for SA 335 P91 (or P no. 5B Group 2/ 15E group 1)

Hello Asif,
 
I have seen the use of P-91 material in conventional thermal generation units, coal, HRSG ,Coal+Biomass. If the plant in question is a solar power plant, then what're the design and operating conditions (e.g temperature, pressure )?
 
Appreciate your response. 
 
Thanks.
 
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist & Consultant
Ontario,Canada.
Email-pgoswami@sympatico.ca,
 


From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Bathula Raghuram (Mumbai - PIPING)
Sent: Tuesday, September 27, 2011 1:30 AM
To: 'materials-welding@googlegroups.com'
Subject: RE: [MW:12546] PWHT Requirement for SA 335 P91 (or P no. 5B Group 2/ 15E group 1)

It is included in B31.1 as P5B in old editions, however  this material is regrouped as P15E in latest edition of ASME BPV Sec IX, , pl refer the table below.

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of ASIF
Sent: Tuesday, September 27, 2011 10:42 AM
To: materials-welding@googlegroups.com
Subject: [MW:12545] PWHT Requirement for SA 335 P91 (or P no. 5B Group 2)

 


Dear experts!

 

 

Project : Solar Power Plant

Construction Code ASME B31.1

 

ASME Sec IX

 

PWHT Requirement - SA 335 P91 or P no. 5B Group 2 material is not included in 132 Para and Table of B31.1, and also,

ASME Sec IX para QW-407 do not mention this material group.

 

Client Specification do not mention this requirement separately

 

Please advise! do we need to go for PWHT ?

 

 


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