asme viii d1 (interpretação vol. 62) 2012
TRANSCRIPT
7/28/2019 ASME VIII D1 (Interpretação Vol. 62) 2012
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SECTION VIII-1
Subject Interpretation File No.UG-10 (2010 Edition), Recertified Material P-Number ............................... VIII-1-10-35 11-246
UG-20(d) [Division 1 (2010 Edition)] and
4.1.5.2(d)(3) [Division 2 (2010 Edition)] ................................................ VIII-1-10-34 10-1800
UG-27 (2010 Edition) ................................................................................. VIII-1-10-38 10-1670
UHA-34 (2007 Edition, 2009 Addenda) ...................................................... VIII-1-10-37 05-397
UW-13(f), Fig. UW-13.3(b), and Appendix 20,
Hub Design (2010 Edition) ..................................................................... VIII-1-10-36 11-335
7/28/2019 ASME VIII D1 (Interpretação Vol. 62) 2012
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Interpretation: VIII-1-10-34
Subject: UG-20(d) [Division 1 (2010 Edition)] and 4.1.5.2(d)(3) [Division 2 (2010 Edition)]
Date Issued: March 9, 2011
File No.: 10-1800
Question: When heat transfer calculations demonstrate that the temperature of a flange and its bolting is less than
the temperature of the adjacent vessel components, may the flange and bolting be considered as a zone in
accordance with Section VIII, Division 1, UG-20(d), and Section VIII, Division 2, 4.1.5.2(d)(3), which would
permit a lower design temperature to be used for the flange and bolting than that used for the adjacent components?
Reply: Yes.
Note: This interpretation also appears as VIII-2-10-05.
Interpretation: VIII-1-10-35
Subject: UG-10 (2010 Edition), Recertified Material P-Number
Date Issued: March 31, 2011
File No.: 11-246
Question: May a material that was originally identified with a specification not permitted by Section VIII,
Division 1, but was recertified by the vessel manufacturer to a permitted specification in accordance with
UG-10(a)(2), use the same P-Number designation of the permitted specification?
Reply: Yes.
Interpretation: VIII-1-10-36
Subject: UW-13(f), Fig. UW-13.3(b); and Appendix 20, Hub Design (2010 Edition)
Date Issued: April 29, 2011
File No.: 11-335
Question: A hub is machined from a flat plate by machining a groove in the plate such that the end of the hub
does not project beyond the face of the original plate as shown in Fig. UW-13.3(b). Do the requirements of Appendix 20 apply?
Reply: Yes.
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Interpretation: VIII-1-10-37
Subject: UHA-34 (2007 Edition, 2009 Addenda)
Date Issued: May 2, 2011
File No.: 05-397
Question: A vessel is constructed of austenitic chromium–nickel alloy steel, containing longitudinal and
circumferential seam welds that exceed a nominal size of 3/4 in. (19 mm). The welds are 100% radiographed in
accordance with UW-51 and UHA-33. May the radiography be used to substitute for the liquid penetrant
examination required by UHA-34?
Reply: No.
Interpretation: VIII-1-10-38
Subject: UG-27 (2010 Edition)
Date Issued: May 2, 2011
File No.: 10-1670
Question (1): An ellipsoidal head is attached to the outside diameter of a cylindrical shell by a threaded
connection. Does the threaded portion of the shell and head need to meet the wall thickness requirements of
UG-27(c) and UG-32(d), respectively, as measured to the root of the thread for each component?
Reply (1): Yes.
Question (2): Since Section VIII, Division 1 does not have rules for the design of the threads for the closure
described in Question (1), shall the MAWP of closure assembly be determined in accordance with U-2(g)?
Reply (2): Yes.
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