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{{#Wiki_filter:Public Meeting with Holtec HISTORM UMAX Storage System Amendment No. 3 December 15, 2020
{{#Wiki_filter:PublicMeetingwithHoltec HISTORMUMAXStorageSystem AmendmentNo.3 December15,2020


Agenda
Agenda
* Welcome and Introduction
* WelcomeandIntroduction
* Technical Issues
* TechnicalIssues
* Public Comments
* PublicComments
* Conclusion 2
* Conclusion 2


===Background===
===
* In UMAX Amendment No. 3, Holtec proposed to include TNs 24PT1DSC as an approved canister to be stored within Holtecs HISTORM UMAX Storage System.
Background===
* Staffs review focuses on Holtec demonstrating safety of the UMAX storage system 3
* InUMAXAmendmentNo.3,Holtec proposedtoincludeTNs24PT1DSCas anapprovedcanistertobestoredwithin Holtecs HISTORMUMAXStorage System.
* StaffsreviewfocusesonHoltec demonstratingsafetyoftheUMAX storagesystem 3


Technical Issues 4
TechnicalIssues 4


Issue #1 Certificate of Compliance Boundary
Issue #1 Certificate of Compliance Boundary
* Holtec proposed certificate of compliance (CoC) boundaries in its responses to RAI26 and RAI28 (ML20002A300)
* Holtec proposedcertificateofcompliance (CoC)boundariesinitsresponsestoRAI26 andRAI28(ML20002A300)
  - The boundary of the HISTORM UMAX license begins when the canister is already loaded and staged in the NUHOMS transfer cask and transfer begins to the HITRAC transfer cask.
TheboundaryoftheHISTORMUMAXlicensebegins whenthecanisterisalreadyloadedandstagedinthe NUHOMStransfercaskandtransferbeginstothe HITRACtransfercask.
  - For the unloading process, the boundary of the HISTORM UMAX license is with removal of the DSC from the HISTORM UMAX transfer cask.
Fortheunloadingprocess,theboundaryofthe HISTORMUMAXlicenseiswithremovaloftheDSC fromtheHISTORMUMAXtransfercask.
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5


Certificate of Compliance Boundary
Certificate of Compliance Boundary
* The proposed CoC boundaries should be clear and specific.
* TheproposedCoC boundariesshouldbe clearandspecific.
* The unloading process seems to imply a transfer back to the TN NUHOMS.
* Theunloadingprocessseemstoimplya transferbacktotheTNNUHOMS.
* Clear CoC boundary is important for the staff to make its regulatory findings.
* ClearCoC boundaryisimportantforthe stafftomakeitsregulatoryfindings.
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6


Certificate of Compliance Boundary
Certificate of Compliance Boundary
* Staff seeks to define CoC boundary by specifying clear and specific transition points and understand the implications for these defined transition points.
* StaffseekstodefineCoC boundaryby specifyingclearandspecifictransition pointsandunderstandtheimplications forthesedefinedtransitionpoints.
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Issue #2 Canister Service Time
Issue #2 Canister Service Time
* NRCs RAI27 asked about the restriction in UMAX FSAR that 24PT1DSC canisters in use for longer than 20 years are not permitted to be stored in UMAX system.
* NRCsRAI27askedabouttherestriction inUMAXFSARthat24PT1DSCcanisters inuseforlongerthan20yearsarenot permittedtobestoredinUMAXsystem.
In response to RAI27 (ML20002A300),
InresponsetoRAI27(ML20002A300),
Holtec explained that the canister in storage greater than 20 years will be removed from service or a renewal application will be submitted.
Holtec explainedthatthecanisterin storagegreaterthan20yearswillbe removedfromserviceorarenewal applicationwillbesubmitted.
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Canister Service Time
Canister Service Time
* The service life of the canister in the UMAX storage system is controlled only by UMAX CoC.
* Theservicelifeofthecanisterinthe UMAXstoragesystemiscontrolledonly byUMAXCoC.
* Clarity of the canisters allowable service life is important for the staff to make its regulatory findings.
* Clarityofthecanistersallowableservice lifeisimportantforthestafftomakeits regulatoryfindings.
* It is not clear how the 20 years is counted.
* Itisnotclearhowthe20yearsis counted.
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9


Canister Service Time
Canister Service Time
* Staff seeks to understand the proposed language; canister in service greater than 20 years as a license condition or TS, whichever is appropriate.
* Staffseekstounderstandtheproposed language;canisterinservicegreater than20yearsasalicenseconditionor TS,whicheverisappropriate.
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10


Public Comments 11
PublicComments 11


Please complete the online public feedback form 12}}
Pleasecompletetheonline publicfeedbackform 12}}

Latest revision as of 13:14, 29 November 2024

Umax Amendment 3 Public Meeting Handout Re Holtec Hi_Storm Umax Storage System
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)
v • d • e


Text

PublicMeetingwithHoltec HISTORMUMAXStorageSystem AmendmentNo.3 December15,2020

Agenda

  • WelcomeandIntroduction
  • TechnicalIssues
  • PublicComments
  • Conclusion 2

=

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.

8

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

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