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@Sjones, Thansks for sharing. it's very usefully information from reaserch and study.

The threads replated to correcsion for understanding https://www.eng-tips.com/viewthread.cfm?qid=220853#post https://www.eng-tips.com/viewthread.cfm?qid=510967

@Edtainless, I tend to your point of view. 1. The outer ring (CS)with SS falnge and outer ring (SS) with CS flange very localized to a lint of corrosion. 2. At the sealing surface (the area contacted by winding material), winding material (SS)+ graphite filter with CS flange at high compressed...

Dear Corrosion Experts, A pair of flanges connection: one is SA-105 and another is SA-182F316L. Spiral Wound Gasket, wounding material of SS316L winding and graphite filter. Outer ring is CS and inner ring is SS316L. Q1, Is there the galvanic corrosion between the CS flange and SS flange? Q2...

@IdanPV, totally agree.

@Idan and XL83NL, Thanks for inputs. Now my understanding is that whether U2 stamp and CE to be required/applied depends on user only.

Hi, Are U2 stamped and CE (Certified Engineer)approval mandatory by code for pressure vessel designed/CONSTRUCTION by ASME VIII-2? Thanks,

Dear weld experts, May apply strength weld to the joint between SA-266Gr2 of tube sheet and SA-312TP316L of tubes? Thanks

Hi QC experts, I have a vendor, the nominal dished head thickness is 14 mm, after forming 7 mm, the stress calculation thickness required is 6 mm. It is ok in deign/stress calculation. But I don't believe it is a good/qualified product with reduced a half of the nominal thickness after forming...

@r6155 and Heaviside1925, please share your idear on MAWP and MAP, just like SnTMAN and Geoff13, whatever your idear is correct or not. Here is open technical discussion palce, but please don't make the meaningless comments and off the topicel of technical discussion. That will help to make the...

Hi code experts, In design view, I would not see the necessity of giving two symbols/concepts for the maximum allowable/working pressure at the design temperatures. the highest allowable design pressure shall meet the design temperatures, whatever the highest one of design temperature or the...

@ KevinNS, The davit design as per pressure Vessel Design Manual, 4th Ed, Moss, which does not mention the test requiremnt for the davit arm

Hi all, Kindly advise what is the test weight factor (not design impact factor) for davit arm of flange cover of heat exchanger or 24" manway (FPSO project) and what is the basis (induatry standards, ABS rule...)? Thanks.

@NRP99, yes, totally agree. For client and user review, the manufacturer has the responsibility to explain the design whatever questions are from them. But for the third party, teaching the inexperience reviewer by paying money to him, in general speaking, will make people will instinctively...

@Gr8blu, thanks for sharing, the anwer seems hopeless as the same problem may be also in my company, too nagetive.

Hi Who shall be the Auditor, Regulatory Agent to qualify ABS work quality and where can I get the link for searching the auditor? I have a design reviewer from ABS, who commented and took the thickness (the minimum) at OD of the flange cover as the calculated thickness as per code. That shows...

Dear Experts, ASME VIII-1 requires the bolt load design to meet the requirement ASME PCC-1 Appendix O. UG-44(b)(2) The actual assembly bolt load (see Nonmandatory Appendix S) shall comply with ASME PCC-1, Nonmandatory Appendix O. PCC-1 is the reference standard in ASME VIII-1, Table U-3...

@EdStainless, Thanks. Agree with you in technical. If the weld seams requreiment is not metioned in the PO, one weld or two welds shall be deterimed by the elbow vendor.

Dear experts, The super duplex 24" elbow (SA-815) will be made by plate. Question: are there any limits from a code/standard for using two weld lines on the elbow, the half welds to the half? The user wants a single weld seam, but the vendor wants to use double seams for the 24" elbow. It is not...

This situation is somewhat similar to UG-20 (f). I called it “experience method”. In my view, UG-20(f) and UCS-66 (c) may be applicable for the components without the calculated MDMT by using UCS-66 curves. It is worth noting that most of clients (EPC/user)do not allow using UG-20(f). IOGP-619...