ASME BPVC SECTION IX WELDING_TRAINING - PART 16

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How to Prepare a pWPS?
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Example situation for filling pWPS. CASE 1

We have to weld a pipe to pipe joint using GTAW welding. The material of the pipe is SA106 Gr B, 2" X Sch 40. Prepare the pWPS (Proposed Welding Procedure Specification) for the same.
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Previous Blog: 

https://hareeshkv.blogspot.com/2018/07/asme-bpvc-section-ix-weldingtraining_25.html

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Please see the format in the previous blog for number references.
(27) Thickness range Fillet:
Refer Table QW-451.4: Fillet weld qualified by Groove-Weld Tests

Thickness T of test coupon (Plate or Pipe) as welded: All groove tests
Range Qualified: All fillet sizes on all base metal thickness and all diameters.

This means that all the fillet welds can be welded of all sizes on all base material thickness using a WPS qualified on groove. Fillet on all diameters can also be welded using a WPS qualified on groove.

(28) & (29): Maximum pass thickness ≤13mm : yes/no

This is included to note that if any process is welded with more than 13mm thickness then the welder will be qualified to unlimited thickness. No more significance is found in this matter.


(30) Any special comments needed in the WPS can be included here. (This is an optional one.)

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