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{{#Wiki_filter:Coverage Relief Request Update Stephen Cumblidge 2020 Industry/NRC NDE Technical Information Exchange Public Meeting
{{#Wiki_filter:Coverage Relief Request Update Stephen Cumblidge 2020Industry/NRCNDETechnicalInformation ExchangePublicMeeting


2015 Presentation on Impractical Relief Requests In 2015 the NRC prepared a presentation that covered issues that commonly resulted in Requests for Additional Information (RAIs)
2015PresentationonImpractical ReliefRequests In2015theNRCpreparedapresentationthatcoveredissuesthat commonlyresultedinRequestsforAdditionalInformation(RAIs)
It can be found in ADAMS under Accession Number ML15013A266 2
ItcanbefoundinADAMSunderAccessionNumberML15013A266 2


What has changed since 2015?
Whathaschangedsince2015?
The quality of impractical relief requests has improved substantially This improvement has resulted in fewer RAIs, but has not eliminated them Many RAIs are based on missing information or errors the submittal Some RAIs are related to issues that makes justifying reasonable assurance of leak tightness and structural integrity more challenging 3
Thequalityofimpracticalreliefrequestshasimproved substantially ThisimprovementhasresultedinfewerRAIs,buthasnot eliminatedthem ManyRAIsarebasedonmissinginformationorerrorsthe submittal SomeRAIsarerelatedtoissuesthatmakesjustifyingreasonable assuranceofleaktightnessandstructuralintegritymore challenging 3


Themes in RAIs Since 2015 Welds with low coverage may get extra scrutiny Some RAIs are in response to operating experience welds with new issues may get more questions Some RAIs address inconsistencies in submittals, such as including information on some welds but not others A review of recent RAIs did not find a strong common issue that resulted in many RAIs 4
ThemesinRAIsSince2015 Weldswithlowcoveragemaygetextrascrutiny SomeRAIsareinresponsetooperatingexperience weldswith newissuesmaygetmorequestions SomeRAIsaddressinconsistenciesinsubmittals,suchas includinginformationonsomeweldsbutnotothers AreviewofrecentRAIsdidnotfindastrongcommonissuethat resultedinmanyRAIs 4


What Information is Helpful?
WhatInformationisHelpful?
Recent examples of RAIs have asked for the following additional information to help provide reasonable assurance in difficult cases:
RecentexamplesofRAIshaveaskedforthefollowingadditional informationtohelpprovidereasonableassuranceindifficult cases:
A summary of the evaluation for accepting the proposed limited coverages required by ASME Code Case N716 Alternative Classification and Examination Requirements Section XI A discussion of measures that could ensure or monitor the structural integrity of the subject welds, including the reactor coolant system leakage detection systems, routine system leakage tests in accordance with IWA/B5000 of the ASME Code, Section XI, boric acid monitoring programs, operator walkdowns, and any augmented examinations.
Asummaryoftheevaluationforacceptingtheproposedlimited coveragesrequiredbyASMECodeCaseN716Alternative ClassificationandExaminationRequirementsSectionXI Adiscussionofmeasuresthatcouldensureormonitorthe structuralintegrityofthesubjectwelds,includingthereactor coolantsystemleakagedetectionsystems,routinesystem leakagetestsinaccordancewithIWA/B5000oftheASMECode, SectionXI,boricacidmonitoringprograms,operatorwalkdowns, andanyaugmentedexaminations.
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Discussion What have we missed?
Discussion Whathavewemissed?
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Latest revision as of 23:51, 22 December 2024

NRC Coverage Relief Request Update January 2020 NDE Technical Information Exchange Public Meeting
ML20009E155
Person / Time
Issue date: 01/09/2020
From: Stephen Cumblidge, Ali Rezai
NRC/NRR/DNRL/NPHP
To:
Rezai A, NRR-DNRL 415-1328
References
Download: ML20009E155 (6)
v • d • e


Text

Coverage Relief Request Update Stephen Cumblidge 2020Industry/NRCNDETechnicalInformation ExchangePublicMeeting

2015PresentationonImpractical ReliefRequests In2015theNRCpreparedapresentationthatcoveredissuesthat commonlyresultedinRequestsforAdditionalInformation(RAIs)

ItcanbefoundinADAMSunderAccessionNumberML15013A266 2

Whathaschangedsince2015?

Thequalityofimpracticalreliefrequestshasimproved substantially ThisimprovementhasresultedinfewerRAIs,buthasnot eliminatedthem ManyRAIsarebasedonmissinginformationorerrorsthe submittal SomeRAIsarerelatedtoissuesthatmakesjustifyingreasonable assuranceofleaktightnessandstructuralintegritymore challenging 3

ThemesinRAIsSince2015 Weldswithlowcoveragemaygetextrascrutiny SomeRAIsareinresponsetooperatingexperience weldswith newissuesmaygetmorequestions SomeRAIsaddressinconsistenciesinsubmittals,suchas includinginformationonsomeweldsbutnotothers AreviewofrecentRAIsdidnotfindastrongcommonissuethat resultedinmanyRAIs 4

WhatInformationisHelpful?

RecentexamplesofRAIshaveaskedforthefollowingadditional informationtohelpprovidereasonableassuranceindifficult cases:

Asummaryoftheevaluationforacceptingtheproposedlimited coveragesrequiredbyASMECodeCaseN716Alternative ClassificationandExaminationRequirementsSectionXI Adiscussionofmeasuresthatcouldensureormonitorthe structuralintegrityofthesubjectwelds,includingthereactor coolantsystemleakagedetectionsystems,routinesystem leakagetestsinaccordancewithIWA/B5000oftheASMECode, SectionXI,boricacidmonitoringprograms,operatorwalkdowns, andanyaugmentedexaminations.

5

Discussion Whathavewemissed?

6

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