Intercambiadores de calor

UG-85

2001 SECTION VIII — DIVISION 1

UG-90

performed by, or be under the control of, the fabricator who shall then place the letter “T” following the letter “G” in the Mill plate marking (see SA-20) to indicate that the heat treatments required by the material specification have been performed. The fabricator shall also document in accordance with UG-93(b) that the specified heat treatmenthas been performed. UCS-85, UHT-5(e), and UHT-81 provide requirements for heat treatment of test specimens.

INSPECTION AND TESTS
UG-90 GENERAL (a) The inspection and testing of pressure vessels to be marked with the Code U Symbol and the testing of vessels to be marked with the Code UM Symbol shall conform to the general requirements for inspection and testing in the following paragraphs andin addition to the specific requirements for Inspection and Tests given in the applicable Parts of Subsections B and C. (b) The Manufacturer has the responsibility of assuring that the quality control, the detailed examinations, and the tests required by this Division are performed. The Manufacturer shall perform his specified duties. See UG-92 and 10-15. Some, but not all, of theseresponsibilities, which are defined in the applicable rules, are summarized as follows: (1) the Certificate of Authorization from the ASME Boiler and Pressure Vessel Committee authorizing the Manufacturer to fabricate the class of vessel being constructed [UG-117(a)]; (2) the drawings and design calculations for the vessel or part [10-5 and 10-15(d)]; (3) identification for all material used in the fabrication ofthe vessel or part (UG-93); (4) securing Partial Data Reports [UG-120(c)]; (5) access for the Inspector in accordance with UG-92 and 10-15; (6) examination of all materials before fabrication to make certain they have the required thickness, to detect defects [UG-93(d)], to make certain the materials are permitted by this Division (UG-4), and that traceability (UG-77) to the material identification(UG-93) has been maintained; (7) documentation of impact tests when such tests are required (UF-5, UCS-66, UHA-51, UHT-6, and ULT-5); (8) concurrence of the Inspector prior to any repairs (UG-78, UW-38, UF-37, and UF-38); (9) examination of the shell and head sections to confirm they have been properly formed to the specified
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shapes within the permissible tolerances (UG-79, UG80, UG-81, UF-27,and UF-29); (10) qualification of the welding and /or brazing procedures before they are used in fabrication [UG84(h), UW-28(b), and UB-31]; (11) qualification of welders and welding operators and brazers before using the welders or brazers in production work (UW-29, UW-48, UB-32, and UB-43); (12) examination of all parts prior to joining to make certain they have been properly fitted for welding orbrazing and that the surfaces to be joined have been cleaned and the alignment tolerances are maintained (UW-31, UW-32, UW-33, and UB-17); (13) examination of parts as fabrication progresses, for material marking (UG-94), that defects are not evident (UG-95), and that dimensional geometries are maintained (UG-96 and UF-30); (14) provision of controls to assure that all required heat treatmentsare performed (UW-2, UW-10, UG-85, UF-31, and 10-11); (15) provision of records of nondestructive testing examinations performed on the vessel or vessel parts. This shall include retaining the radiographic film if radiographic examinations are performed (UW-51, UW52, and 10-10); (16) making the required hydrostatic or pneumatic test and having the required inspection performed during such test(UG-99, UG-100, and UW-50); (17) applying the required stamping and /or nameplate to the vessel and making certain it is applied to proper vessel (UG-116, UG-118, and UG-119); (18) preparing required Manufacturer’s Data Report and having it certified by the Inspector (UG-120); (19) providing for retention of radiographs (UW51), ultrasonic test reports (12-4), and Manufacturer’s Data Reports (UG-120)....