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ASME B31.3-2016 or ultrasonically examined shall be examined by mag- certified for the method to be utilized following a proce- netic particle or liquid penetrant methods in accordance dure as described in BPV Code, Section V, Article 1, with para. 344.3 or 344.4. T-120(e) or (f). (c) Additional Examination Required for Autogenous Welds, Without Filler Metal, in Austenitic Stainless Steel 342.2 Specific Requirement and Austenitic High Nickel Alloys. Autogenously welded For in-process examination,the examinations shall be pipe shall receive nondestructive examination in accor- performed by personnel other than those performing dance with the material specification. Autogenously the production work. welded expansion joint bellows shall be examined in accordance with para. X302.2.2(c). (d) Certification and Records. The requirements of 343 EXAMINATION PROCEDURES (16) para. 341.4.1(c) apply. Any examination shall be performed in accordance 341.5 Supplementary Examination with a written procedure that conforms to one of the methods specified in para. 344,including special meth- Any of the methods of examination described in ods (see para. 344.1.2). Procedures shall be written as para. 344 may be specified by the engineering design to required in the BPV Code, Section V, Article 1, T-150. supplement the examination required by para. 341.4. The employer shall make the examination procedures The extent of supplementary examination to be per- employed available to the Inspector. formed and any acceptance criteria that differ from those in para. 341.3.2 shall be specified in the engineering design. 344 TYPES OF EXAMINATION 341.5.1 Spot Radiography 344.1 General (a) Longitudinal Welds. Spot radiography for longitu- 344.1.1 Methods. Except as provided in dinal groove welds required to have a weld joint factor para. 344.1.2, any examination required by this Code, Ej of 0.90 requires examination by radiography in accor- by the engineering design, or by the Inspector shall dance with para. 344.5 of at least 300 mm (1 ft)in each be performed in accordance with one of the methods 30 in(100 ft)of weld for each welder or welding operator. specified herein. Acceptance criteria are those stated in Table 341.3.2 for radiography under Normal Fluid Service. 344.1.2 Special Methods. If a method not specified (b) Circumferential Butt Welds and Other Welds. It is herein is to be used,it and its acceptance criteria shall recommended that the extent of examination be not less be specified in the engineering design in enough detail than one shot on one in each 20 welds for each welder to permit qualification of the necessary procedures and or welding operator.Unless otherwise specified,accept- examiners. ance criteria are as stated in Table 341.3.2 for radiogra- 344.1.3 Definitions. The following terms apply to phy under Normal Fluid Service for the type of joint any type of examination: examined. (c) Progressive Sampling for Examination. The provi- 100%examination:complete examination of all of a speci- sions of para. 341.3.4 are applicable. fied kind of item in a designated lot of piping (d) Welds to Be Examined. The locations of welds and random examination: complete examination of a per- the points at which they are to be examined by spot centage of a specified kind of item in a designated lot radiography shall be selected or approved by the of piping Inspector. spot examination:2 a specified partial examination of (16) 341.5.2 Hardness Tests. Hardness tests are not each of a specified kind of item in a designated lot of required to verify proper heat treatment except as other- wise specified in the engineering design. 1 A designated lot is that quantity of piping to be considered 341.5.3 Examinations to Resolve Uncertainty. Any in applying the requirements for examination in this Code. The quantity or extent of a designated lot should be established by method may be used to resolve doubtful indications. agreement between the contracting parties before the start of work. Acceptance criteria shall be those for the required More than one kind of designated lot may be established for differ- examination. ent kinds of piping work. See Pipe Fabrication Institute Standard ES-48, Random Examination, for examples of lot selection. 342 EXAMINATION PERSONNEL 2 Random or spot examination will not ensure a fabrication prod- uct of a prescribed quality level throughout.Items not examined 342.1 Personnel Qualification and Certification in a lot of piping represented by such examination may contain defects that further examination could disclose.Specifically,if all Personnel performing nondestructive examination to radiographically disclosable weld defects must be eliminated from the requirements of this Code shall be qualified and a lot of piping,100%radiographic examination must be specified.