PQR

[DCMV]

Got a question to clarify when PWHT is required. B3.3 requires pwht for material over .750", so can a PQR per ASME sect IX have been done on a plate 1.5" thk. Without pwht and can a WPS use this PQR for a max thk of 8" without PWHT.

 

[racookpe1978]

?

If a section in the code requires a post weld heat treat for a cross-area thicker than 0.75 .... Why are you asking if no PWHT is required for a section not only greater than 0.75, but greater than 1.50 AND greater than 8.00 ??

That a previous PQR was done does mean it was done correctly.

 

[DCMV]

I guess my question is can a PQR have base metal thickness of 1.5 without PWHT and still be in the ASME SECT IX requirement?

 

[metengr]

I guess my question is can a PQR have base metal thickness of 1.5 without PWHT and still be in the ASME SECT IX requirement?

Yes, it is routinely done for ASME Section IX qualification of carbon steel base materials w/o PWHT.

 

[weldstan]

Yes, as per metengr. The governing thickness for carbon steel is often the deposited weld thickness - not the base metal thickness.