ASME VIII-2008 pdf download.RULES FOR CONSTRUCTION OF PRESSURE VESSELS.
ASME has established procedures to authorize qualified organizations to perform various activities in accordance with the requirements of the ASME Boiler and Pressure Vessel Code. Itis the aimofthe Society to provide recogni- tion of organizations so authorized. An organization hold- ing authorization to perform various activities in accordance with the requirements of the Code may state this capability in its advertising literature. Organizations that are authorized to use Code Symbols for marking items or constructions that have been con- structedandinspectedincompliancewiththeASMEBoiler and Pressure Vessel Code are issued Certificates ofAutho- rization. Itis the aim ofthe Society to maintain the standing of the Code Symbols for the benefit of the users, the enforcement jurisdictions, and the holders of the symbols who comply with all requirements. Based on these objectives, the following policy has been established on the usage in advertising of facsimiles of the symbols, Certificates of Authorization, and reference to Code construction.
(a) the welding end connection forthe firstcircum- ferential joint for welded connections [see UW-13(h)]; (b) the firstthreaded jointforscrewed connections; (c) the face of the first flange for bolted, flanged connections; (d) the first sealing surface for proprietary connec- tions or fittings; U-1(e)(2) where nonpressure parts are welded directly to either the internal or external pressure retaining surface of a pressure vessel, this scope shall include the design, fabrication, testing, and material requirements establishedfornonpressurepartattachments bytheapplica- ble paragraphs of this Division; 3 U-1(e)(3) pressure retaining covers for vessel open- ings, such as manhole or handhole covers, and bolted cov- ers with their attaching bolting and nuts; U-1(e)(4) the first sealing surface for proprietary fit- tings or components for which rules are not provided by this Division, such as gages, instruments, and nonmetallic components. U-1(f) The scope of the Division includes provisions for pressure relief devices necessary to satisfy the require- ments of UG-125 through UG-137 and Appendix 11. U-1(g)(1) Unfired steam boilers shall be constructed in accordance with the rules ofSection I or this Division [see UG-125(b) and UW-2(c)]. U-1(g)(2) The following pressure vessels in which steam is generated shall not be considered as unfired steam boilers, and shall be constructed in accordance with the rules of this Division: U-1(g)(2)(a) vessels known as evaporators or heat exchangers; U-1(g)(2)(b) vessels in which steam is generated by the use of heat resulting from operation of a processing system containing a number of pressure vessels such as used in the manufacture of chemical and petroleum products; U-1(g)(2)(c) vessels in which steam is generated but not withdrawn for external use.
(1) The Manufacturer of any vessel or part to be marked with the Code Symbol has the responsibility of complying with all of the applicable requirements of this Division and, through proper certification, of assuring that all work done by others also complies. The vessel or part Manufacturer shall have available for the Inspector’s review the applicable design calculations. See 10-5 and 10-15(d). (2) Some types ofwork, such as forming, nondestruc- tive examination, and heat treating, may be performed by others (for welding, see UW-26 and UW-31). It is the vessel or part Manufacturer’s responsibility to ensure that all work so performed complies with all the applicable requirements ofthis Division. Afterensuring Code compli- ance, the vessel or part may be Code stamped by the appropriate Code stamp holder after acceptance by the Inspector. (c) A vessel may be designed and constructed using any combination of the methods of fabrication and the classes of materials covered by this Division provided the rules applying to each method and material are complied with and the vessel is marked as required by UG-116. (d) When the strength of any part cannot be computed with a satisfactory assurance of safety, the rules provide procedures for establishing its maximum allowable work- ing pressure.