ASME B31.3 pdf free download

ASME B31.3 pdf free download Process Piping ASME Code for Pressure Piping, B31
300 GENERAL STATEMENTS
(a) Identification. This Process Piping Code is aSection of the American Society of Mechanical EngineersCode for Pressure Piping, ASME B31,an AmericanNational Standard.It is published as a separate docu-ment for convenience of Code users.
(b) Responsibilities
(1) Owner.The owner of a piping installation shall
have overall responsibility for comglianaceawotnh aiCode, and for establishing the requirements for design,
construction, examination, inspection, and testing thatwill govern the entire fluid handling or process installa-tion of which the piping is a part. The owner is alsoresponsible for designating piping in Category D,Category M,High Pressure,and High Purity FluidServices, and for determining if a specific QualitySystem is to be employed. [See paras. 300(d)(4) through(7) and Appendix Q.]
(2) Designer. The designer is responsible to theowner for assurance that the engineering design of pip-
ing complies with the requirements of this Code andwith any additional requirements established by the
owner.
(3)Manufactirer, Fabricator, and Erector. The manu-facturer, fabricator, and erector of piping are responsiblefor providing materials, components, and workmanshipin compliance with the requirements of this Code andof the engineering design.
(4) Owner’s Inspector. The owner’s Inspector (seepara. 340) is responsible to the owner for ensuring thatthe requirements of this Code for inspection, examina-tion, and testing are met.If a Quality System is specifiedby the owner to be employed, the owner’s Inspector isresponsible for verifying that it is implemented.
(c) Intent of the Code
(1) It is the intent of this Code to set forth engi-neering requirements deemed necessary for safe design
and construction of piping installations.
(2)This Code is not intended to apply to the opera-tion, examination, inspection, testing, maintenance,orrepair of piping that has been placed in service. Theprovisions of this Code may optionally be applied for those purposes, although other considerations may alsobe necessary.
(3) Engineering requirements of this Code,whileconsidered necessary and adequate for safe design, gen-erally employ a simplified approach to the subject. Adesigner capable of applying a more rigorous analysisshall have the latitude to do so; however, the approachmust be documented in the engineering design and itsvalidity accepted by the owner.The approach used shallprovide details of design, construction, examination,inspection, and testing for the design conditions of para.30i, with calculations consistent with the design criteriaof this Code.
(4) Piping elements should, insofar as practicable,conform to the specifications and standards listed inthis Code.Piping elements neither specifically approvednor specifically prohibited by this Code may be usedprovided they are qualified for use as set forth in applica-ble Chapters of this Code.
(5) The engineering design shall specify anyunusual requirements for a particular service. Whereservice requirements necessitate measures beyond thoserequired by this Code, such measures shall be specifiedby the engineering design.Where so specified, the Coderequires that they be accomplished.
(6)Compatibility of materials with the service andhazards from instability of contained fluids are notwithin the scope of this Code. See para. F323.
(d) Determining Code Requiremnents
(1)Code requirements for design and constructioninclude fluid service requirements, which affect selectionand application of materials,components,and joints.Fluid service requirements include prohibitions, limita-tions,and conditions, such as temperature limits or arequirement for safeguarding (see Appendix G).Coderequirements for a piping system are the most restrictiveof those that apply to any of its elements.
(2) For metallic piping not designated by the owneras Category M，High Pressure,or High Purity FluidService(see para. 300.2 and Appendix M), Code require-ments are found in Chapters 1 through Vl (the baseCode) and fluid service requirements are found in