ML18012A714
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| ML18012A714 | |
| Person / Time | |
|---|---|
| Issue date: | 01/12/2018 |
| From: | Stephen Cumblidge, Ali Rezai NRC/NRR/DMLR/MPHB |
| To: | |
| Rezai A, NRR-DMLR 415-1328 | |
| Shared Package | |
| ML18002A510 | List: |
| References | |
| Download: ML18012A714 (5) | |
Text
ASMECodeCaseN780 StephenCumblidge NRC/IndustryNDETechnical InformationExchangeMeeting January1618,2018
ASMECodeN780
- N780allowsanessentialvariables,typically equipment,tobechangedinanAppendixVIII qualifiedprocedure
- ThegoalofN780istoprovideflexibilityin upgradingequipment
- TheNRChasconcernsthatuntested equipmentcouldbeusedininspections, reducingtheeffectivenessofAppendixVIII requirements 2
ProposedRG1.193Revision5
- Atthistime,theNRCwillreviewapplicationofCode CaseN780onacasebycasebasis.TheCodeCaseisa newalternativetothecurrentrequirementsinSection XI,AppendixVIII.Thetechnicaljustificationforthe alternativeisbasedlargelyontheexpertiseof nondestructiveexaminationexpertsandlaboratory testing.Whilethelaboratorytestingwaswell conducted,itwasnotbounding.TheNRCbelievesthat industryexperienceinapplyingthealternativeis neededtoensuregenericapplicabilityand demonstratereliabilitybeforethealternativecanbe approvedinRG1.147.
3
N780andAppendixVIII
- AppendixVIIIParagraph3130EssentialVariable Rangesrequiresablindpersonnel demonstrationtesttoalteranessentialvariable
- AppendixVIII4000providestolerancesinsome essentialvariables
- Supplement1providesrulesforevaluatingthe electroniccharacteristicsofultrasonicsystems
- N780requiresatechnicaljustificationanda practicaldemonstration,withthePDAevaluating both 4
PathForwardforN780
- TheNRCisnotopposedtotheconcept,butwe haveconcernsabouthowN780couldbeapplied
- ExamplesoftheN780processwouldbevery usefulindemonstratinghowthecodecasewould beusedtoupdateequipment
- TheNRCwouldtakeanyadditionaltechnical justificationforN780intoaccountinthenext roundofrulemakingforRG1.147andRG1.193 5