dear sir
hi
please be informed that as per ASME B31.8 reduction or 10 percent of thickness is accepted and no need for repair but if you insist for repair this solution is acceptable and you can repair the area by low hydrogen electrode E7018 size 2.4mm(baking and using as per manufacturer recommendation).meanwhile you can repair the area by composite without PWHT.
best regards
h.sarpasi
On Saturday, December 9, 2017, 6:06:09 AM GMT+3:30, 'raouf salhi' via Materials & Welding <materials-welding@googlegroups.com> wrote:
We have a feed water piping ( A 106 C ) thickness is 47 mm we remark a thickness lost of 3.5 to 4 mm( during supports modification ).
Our construction team propose to repair this damage by welding ( the same WPS used for production ) and after PWHT and NDE .
According your experience this solution it's acceptable or we should cut the damaged area and replace by new spool ?
regards
SALHI Raouf
QA/QC Engineer
Tel: Morocco +212628979891
Tunisia +21621458258
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
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