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david339933 in this case you are right as the thickness is greater than 16 mm Regards - Juergen

Which code? If ASME VIII/1 is applicable read table UW-12. The joint shell to header is an corner joint, which means joint of type 7 and there is no Joint Efficiency. Regards - Juergen

Type 1 joint definition per table UW-12: -Butt joints welded from both sides or -Butt joints welded from one side only without a permanent backing strip, that are verified as having achieved full penetration and fusion as required by UW-35. In your case, the second bullet point applies if UW-35...

Working with the code means be precise and read the code. Which edition is applicable? Edition 2021 SB-677 UNS N08904 is mentioned in table Table UNF-23.3 as well in ASME IID, table 1b, line 37 and UG-4(a) will be met. Edition 2023 SB-677 UNS N08904 is mentioned in table Table UNF-23.3 but not...

The name(s) of the laboratory/laboratories who conducted the Mechanical Testing shall be stated on this line corresponding to the laboratory test number(s) in the same line. If there is not enough space for this, adapt the form or refer to an appendix where all laboratories are listed with the...

I assume you mean the original Code of Construction is ASME Section VIII Div. 2. NBIC Part 3, Para 4.4.1a)1) require for hydro test: Pressure tests shall be conducted using water or other liquid medium. The test pressure shall be the minimum required to verify the leak tightness integrity of...

If a company were to make such a suggestion to me, I would immediately blacklist them as an unqualified supplier, as they do not have sufficient knowledge of the manufacturing processes for pressure vessels. This is typical for engineering companies that have lost all connection to the pressure...

This discussion can only be based on ASME B31.3 Edition 2020 or later as there are several changes to the toughness testing requirements with Edition 2020. Basic for the Evaluation: ASME B31.3 Ed. 2020 323.2.2 Lower Temperature Limits, Listed Materials …… (d) Impact testing of the base metal...

It is permissible. Interpretation: VIII-1-10-15 Subject: UW-9(d), Table UW-12 (2007 Edition, 2009 Addenda) Date Issued: April 30, 2010 File: 02-3088 Question (1): Does Section VIII, Division 1 restrict the number of longitudinal welded joints that may be located in a single shell course? Reply...

This tube to tube sheet joint is used by several manufacturer. See Code Case 2428-4 "Attachment of Tubes to Flat Tube sheets Using Complete Penetration Welds Section VIII, Division 1" See also...

I want to avoid being unpolite, but the answer of DhurjatiSen is a bit too simple. A joint from P-No. 1 to P-No.5B is an unusual combination of materials. Normally a P-No. 4 transition material is used. But this does not work for tube to tubesheet welds. Some other Pressure Vessel Codes (e.g...

I agree 100% with MeltedEng. Back to the OP question: The thickness range for a pipe >2.5mm welded during the qualification test is: greater than 2.5mm (with no upper limit). Regards - Juergen

Hi, the stated requirement comes from Section VIII, Division 1, Paragraph UG-84(h)2()(-b) or Section VIII, Division 2, Paragraph 3.11.8.3(f)(2) and is therefore an addition to the variables of ASME IX and must be fulfilled if there are impact requirements for all P-No. until Edition 2021 and...

Read the Code: UG-848(h)(3) Material Over 11/2 in. (38 mm) Thick Regards - Juergen

1.4521 or UNS S44400 is a Ferritic stainless steels and is assigned to P-No. 7.1 acc. to ASME IX as well to Material Group 7. 1 acc. to ISO/TR 20172. In compliance with: • ASME VIII/1 Edition 2021, Table UHA-32-2 • ASME B31.3 Edition 2020, Table 331.1.1 general PWHT is required. But in...

For evaluating if impact tests are required you must follow the rules of UCS-66: "Each component shall be evaluated for impact test requirements based on its individual material classification, governing thickness ....., and the minimum design metal temperature." The following governing...

You Can put all the information on the same nameplate as long as the layout of the nameplate shows a distinct delineation between the area with the ASME certification mark for the chamber in the Scope of ASME Section and the area for the chamber not in the scope of ASME code section. Regards -...

Acc. to table QW-451.4 all groove tests qualify all fillet sizes on all base metal thicknesses and all diameters if impact tests are not required by the code of construction. If impact tests are required in addition the minimum qualified base metal thickness of QW-403.6 applies. Regards - Juergen

For build up with ER80S-B2 or ER90S-B3 a separate PQR according to QW-202.3(b) is required. This qualification is not part of the hard facing qualification. Regards - Juergen

See ASME I, PG-2.2 below ASME I PG-2 SERVICE LIMITATIONS PG-2.1 The rules of this Section are applicable to the following services: (a) boilers in which steam or other vapor is generated at a pressure of more than 15 psig (100 kPa) for use external to itself (b) high‐temperature water boilers...