ML20338A060
| ML20338A060 | |
| Person / Time | |
|---|---|
| Site: | HI-STORM 100 |
| Issue date: | 12/15/2020 |
| From: | William Allen Storage and Transportation Licensing Branch |
| To: | |
| WCAllen - NMSS/DFM/STLB - 301.415.6877 | |
| References | |
| Download: ML20338A060 (12) | |
Text
PublicMeetingwithHoltec HISTORMUMAXStorageSystem AmendmentNo.3 December15,2020
Agenda
- WelcomeandIntroduction
- TechnicalIssues
- PublicComments
- Conclusion 2
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Background===
- InUMAXAmendmentNo.3,Holtec proposedtoincludeTNs24PT1DSCas anapprovedcanistertobestoredwithin Holtecs HISTORMUMAXStorage System.
- StaffsreviewfocusesonHoltec demonstratingsafetyoftheUMAX storagesystem 3
TechnicalIssues 4
Issue #1 Certificate of Compliance Boundary
- Holtec proposedcertificateofcompliance (CoC)boundariesinitsresponsestoRAI26 andRAI28(ML20002A300)
TheboundaryoftheHISTORMUMAXlicensebegins whenthecanisterisalreadyloadedandstagedinthe NUHOMStransfercaskandtransferbeginstothe HITRACtransfercask.
Fortheunloadingprocess,theboundaryofthe HISTORMUMAXlicenseiswithremovaloftheDSC fromtheHISTORMUMAXtransfercask.
5
Certificate of Compliance Boundary
- TheproposedCoC boundariesshouldbe clearandspecific.
- Theunloadingprocessseemstoimplya transferbacktotheTNNUHOMS.
- ClearCoC boundaryisimportantforthe stafftomakeitsregulatoryfindings.
6
Certificate of Compliance Boundary
- StaffseekstodefineCoC boundaryby specifyingclearandspecifictransition pointsandunderstandtheimplications forthesedefinedtransitionpoints.
7
Issue #2 Canister Service Time
- NRCsRAI27askedabouttherestriction inUMAXFSARthat24PT1DSCcanisters inuseforlongerthan20yearsarenot permittedtobestoredinUMAXsystem.
InresponsetoRAI27(ML20002A300),
Holtec explainedthatthecanisterin storagegreaterthan20yearswillbe removedfromserviceorarenewal applicationwillbesubmitted.
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Canister Service Time
- Theservicelifeofthecanisterinthe UMAXstoragesystemiscontrolledonly byUMAXCoC.
- Clarityofthecanistersallowableservice lifeisimportantforthestafftomakeits regulatoryfindings.
- Itisnotclearhowthe20yearsis counted.
9
Canister Service Time
- Staffseekstounderstandtheproposed language;canisterinservicegreater than20yearsasalicenseconditionor TS,whicheverisappropriate.
10
PublicComments 11
Pleasecompletetheonline publicfeedbackform 12