Rules for qualification of NDT systems in Sweden (PDF ... - Vattenfall

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PBM2 Appendix 5 8(38) have to be fixed in the inspection procedure and/or technical justification. This first category of essential parameters is called the “essential parameters to be considered within a tolerance”. The second category of essential parameters are those which really do influence the performance of the inspection as they vary within a certain range. It should be demonstrated that the inspection will have adequate capability for the full ranges of values over which this second category of essential parameters can vary. The number of essential parameters belonging to this second category will in general be small. The definition of technical justification concludes by saying that “It might include physical reasoning, mathematical modelling, results from RRTs [Round Robin Trials], field NDT results or laboratory studies as appropriate.” It was agreed to use “experimental studies” instead of “laboratory studies”. Edition 4 toleranser måste fixeras inom provningsproceduren och/eller den tekniska motiveringen. Denna första kategori av viktiga variabler kallas ”viktiga variabler att beaktas inom ett toleransområde”. Den andra kategorin viktiga variabler är de som faktiskt påverkar provningens prestanda när de varierar inom ett givet område. Här ska påvisas att provningen har adekvat kapacitet för hela värdeområdet inom vilket denna andra kategori av viktiga variabler kan variera. Antalet viktiga variabler som hör till denna andra kategori är vanligen litet. Definitionen av den tekniska motiveringen avslutas med följande uttalande: ”Den kan innefatta kvalitativ bedömning, matematisk modellering, resultat från RRT [Round Robin Trials], fältresultat från OFP eller laboratoriestudier i tillämpliga fall.” Överenskommelse har nåtts om att tillämpa begreppet ”experimentella studier” i stället för ”laboratoriestudier”.
PBM2 Appendix 5 9(38) Legend : Part of the Technical J u s tific a tio n responsibilities U tility*: can be contracted out to e.g. vendor fdjfkldsjflkdsfdsfdfjdsf Figure 1: General concept of technical justification in the framework of the whole qualification approach, including all the elements of the European methodology (detail of implementation will vary from country to country) Figur 1: Generellt koncept för teknisk motivering inom ramen för hela kvalificeringsarbetet, inkluderande alla de delar som ingår i den Europeiska Metodiken (detaljer om implementeringen varierar från land till land). Edition 4 U tility provides Q ualification objectives + ISI objectives + input info (components and defects) W hat is assessed by what part of the TJ? and how and how is the TJ assessed? Q ualification Body perform s A ssessm ent of NDT procedure U tility*/vendor perform s Review of influential/essential param eters and personnel requirem ents Physical reasoning U tility*/vendor provides supporting evidence Q ualification Body perform s A ssessm ent of prelim inaryTJ NO U tility*/vendor produces Final TJ dossier Q ualification Body perform s Final assessm ent of TJ NO U tility defines Q u a lific atio n le ve l Q ualification Body produces Qualification Procedure Recommendation Requirem ent for generalisation Is the sum of T J + P T sufficient to fulfil the req uirem ents of the q ualificatio n YES Feed-back Feed-back Overall evaluation : Is there enough evidence that the NDT system can m eet its stated objectives YES Q ualification Body perform s A ssem bling of qualification dossier U tility*/vendor perform s In-service inspection U tility*/vendor develops and provides NDT system (procedure + equipment + personnel) + Existing works and documents for TJ What is assessed by what practical tria l (P T ), and how ? Q ualification Body/U tility produces D efinitio n of practica l tria ls (m od a lities, test blocks, acceptance criteria ,… ) Q ualification Body perform s Evaluation of expected conclusions of PT, in term s of giving evidence on “NDT re liab ility” Q ualification Body/U tility organises Vendor performs P ractica l tria ls Q ualification Body organises Vendor performs Personnel qualification (if needed) Feed-back
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PBM2 RULES FOR QUALIFICATION OF NDT
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PBM2 3(21) Appendix 1 Kvalificering
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PBM2 Chapter 1 5(21) 1 SCOPE Editio
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PBM2 Chapter 7 19(21) 7 TEST PIECES
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PBM2 Chapter 9 21(21) 9 REFERENCES
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