78.보일러 및 압력용기에 대한 침투탐상검사(ASME Sec.V Art.6)에서 절차서 인정이 요구되는 경우에 실증에 의한 절차서 재인정이 필요한 경우는?

해설

[ASME Sec.V Art.6] T-621.2 Procedure Qualification. When procedure qualification is specified by the referencing Code Section, a change of a requirement in Table T-621.1 identified as an essential variable shall require requalification of the written procedure by demonstration. A change of a requirement identified as a nonessential variable does not require requalification of the written procedure. All changes of essential or nonessential variables from those specified within the written procedure shall require revision of, or an addendum to, the written procedure. Table T-621.1 Requirements of a Liquid Penetrant Examination Procedure (Nonessential Variable) Personnel qualification requirements Materials, shapes, or sizes to be examined and the extent of examination Post-examination cleaning technique