Reply (1): No. UG-99 and UG-100 provide only for hydrostatic or pneumatic test of the entirevessel.

Question (2): Is it permissible, in accordance with Section VIII, Division 1, to construct (includinghydrostatic or pneumatic testing) a vessel in the shop including stamping with the "U" Symbol. Thevessel would then be cut in half, rewelded in the field, and the field weld only would be tested by use of ahalf pipe as a test ring welded to the vessel shell in lieu of retesting the whole vessel?

Reply (2): The Code is applicable to a vessel up to and including the stamping of the vessel. Anymodifications, alternations, or repairs to a stamped vessel must be performed in accordance with therequirements of tile jurisdiction where the vessel is to be located.

Interpretation: VIII-79-02Subject: Section VIII, Division 1, UG-32 and UW-12Date Issued: January 3, 1979File: BC78-774

Question: May a seamless hemispherical head complying with UG-32(f) of Section VIII, Division 1with a weld efficiency from Table UW-12 of E = 0.90 be permitted to have the minimum requiredthickness reduced by using, E = 1.0 in areas of the head other than the head-to-shell joint?

Reply: No. The minimum required thickness of the head after forming, exclusive of corrosionallowance, must be based on E = lowest efficiency of any joint in the head, and for hemispherical headsthis includes head-to-shell joint. See UG-32(a) and definition of E in UG-32(c) of Section VIII, Division1.

Interpretation: VIII-79-03Subject: Section VIII, Division 1, UG-11(c)Date Issued: January 4, 1979File: BC78-668

Question (1): May SA-403 standard pipe fittings fabricated by welding under tile dimensionalrequirements of ANSI B16.9 be radiographed and examined by the parts manufacturer and furnished tothe vessel manufacturer without a Partial Data Report if the radiographs are also furnished?

Reply (1): No. (See Preamble of SA-403)

Question (2): May A403 standard pipe fittings fabricated by welding under the dimensionalrequirements of ANSI B16.9 be radiographed and examined by the parts manufacturer and furnished tothe vessel manufacturer without a Partial Data Report if the radiographs are also furnished?

Reply (2): Yes. (See UG-11)

Question (3): Can A403 standard pipe fittings under the dimensional requirements of B16.9 beradiographed and examined by the parts manufacturer and furnished to the vessel manufacturer Without aPartial Data Report if the radiographs are not furnished?

Reply (3): No. Partial Data Reports are required. (See UG-11)