InspectorWilly
Mechanical
- Apr 25, 2013
- 11
We have a decent size (120"OD x 240" W-W, 1.25" thk Shell) unit which is having a 3-piece jacket installed per Appendix 9 in 3 sections: Bottom head to 1 can, then 2 additional cans on the shell only. All 3 shell cans have 1 long seam in them. The head will be provided 100%RT with PDR. The bottom head to shell can will be welded with a full-penetration double sided weld, but the other seams between the sections will be single-fillet welded to an appx. 1" x 2" divider plate to separate the jacket into 3 sections. Spot RT per UW-52 is applied giving an 85% joint efficiency to the jacket.
My question is this: If we cannot shoot but 1 of the 4 circumferential seams due to geometry, and still get the spot RT on the long seams and UW-11(a)(5)(b) requirement, can we still use 85%? See link for jacket closure rings.
Thanks,
Doc
“When doing a job — any job — one must feel that he owns it, and act as though he will remain in that job forever.”
-Admiral Hyman G. Rickover
My question is this: If we cannot shoot but 1 of the 4 circumferential seams due to geometry, and still get the spot RT on the long seams and UW-11(a)(5)(b) requirement, can we still use 85%? See link for jacket closure rings.
Thanks,
Doc
“When doing a job — any job — one must feel that he owns it, and act as though he will remain in that job forever.”
-Admiral Hyman G. Rickover
