Section I coil hydro without AI witness
Section I coil hydro without AI witness
(OP)
Where in ASME Section I does it allow the S stamp holder to hydrotest coils without the Authorized Inspector witnessing?
Thanks.
Thanks.
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Section I coil hydro without AI witness
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RE: Section I coil hydro without AI witness
If the item contains no pressure retaining welds, see PG-106.8.1.
RE: Section I coil hydro without AI witness
RE: Section I coil hydro without AI witness
RE: Section I coil hydro without AI witness
Once the PART is installed in the field, the PART will be hydro tested and that hydro will have to be witnessed by the Inspector signing the Final Data Report (or R-1 form in case of a field Repair).
PG-106.8 Stamping and Marking of Parts.
PG-106.8.1 When only a part of the boiler is
supplied and the data are recorded on Form P-4,
Manufacturer’s Partial Data Report (see PG-112.2.4), the
part shall be stamped with
(a) Certification Mark above the word “part”
(b) certified by (name of Manufacturer)
(c) Manufacturer’s serial number of the part
(d) year built
Parts may be stamped with the Certification Mark
without being pressure tested prior to shipment
RE: Section I coil hydro without AI witness
Once the ASME Section I PART is installed, it falls under the NBIC and only the connecting welds are subject to NDT/pressure testing based on current rules in the NBIC. The pressure retaining welds fabricated under ASME Section I with no code-Hydrostatic test is where problems have been happening in the field. Owner/Users did not specify a code Hydrostatic test during fabrication of the PART.
RE: Section I coil hydro without AI witness
However, I believe the Code must allow for this option, as many PARTs (with pressure retaining welds) can't be hydro tested till they are installed. A head manufacturer might have to make a large head by 2 pc construction and Code stamp the head as a PART, but he cannot hydro test just a single head in the shop, so the Code must allow for PARTs to be made without necessarily performing the final hydro test prior to shipment. Since this option is possible, I think you are exactly correct when stating the Owner/User or even R stamp holder purchasing the PART needs to specify the Code hydro test be performed in the shop.
RE: Section I coil hydro without AI witness
RE: Section I coil hydro without AI witness
I wonder if ASME Sect. I might ever look at an appendix or Code Case for "Multiple Duplicates" as Sect. VIII-1 has (App. 35?). If a shop is producing 100 superheater elements and wants to continue to perform hydrostatic testing on 2nd or 3rd shift, could there be some sort of allowance that the A.I. only has to witness those performed during his 8 hour (1st) shift? He might see most all fabrication of these Parts during his normal 8 hour shift, but just miss the final hydro test if they are done on a 2nd or 3rd shift.
Section VIII-1 App. 35 allows complete vessels to be fabricated and stamped on 2nd shift after AI has worked his normal 1st shift. In the case of the Sect. I multiple duplicate PARTS (superheater elements, economizer elements, etc) they are not fabricated and completed in a single shift, so the AI does see them during fabrication. It just seems there should be some sort of way to allow qualified individual (QC) to witness any hydro tests of such multiple duplicate Parts on 2nd shift. Such items are usually exempt from stamping as well, so no stamping to witness (just verifying markings or tags).
I think such a classification (Multiple Duplicate Parts as described) would be beneficial to the stamp holder and the AIA. If AIA has to sell/provide coverage for 2nd or 3rd shift...what do they do with that manpower when no such work is going on on the 2nd or 3rd shifts?
RE: Section I coil hydro without AI witness
RE: Section I coil hydro without AI witness