ML18065A142
| ML18065A142 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 09/29/1995 |
| From: | Smedley R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9510060318 | |
| Download: ML18065A142 (2) | |
Text
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I consumers Power POWE RI Nii lllllCHlliAN"S PROliREll Palisades Nuclear Plant: 27780 Blue Star Memorial Highway, Covert, Ml 49043 September 29, 1995 U S Nuclear Regulatory Commission Document Cont~ol Desk Washington, DC 20555 DOCKET 50-255 - LICENSE DPR PALISADES PLANT ADDITIONAL INFORMATION IN SUPPORT OF REQUEST-FOR NRC CONCURRENCE WITH INTERPRETATION OF CERTIFICATE OF COMPLIANCE FOR PACIFIC SIERRA NUCLEAR VENTILATED STORAGE CASK VSC-24 In a letter dated June 12, 1995, Consumers Power Company (CPCo) requested NRC concurrence with our interpretation of section 1.2.13 of the Certificate of Compliance {COC) for the Pacific Sierra Nuclear Vehtilated Storage Cask
{VSC-24).
ln that letter a commitment was made to submit an analysis showing that the shell temperature of Mult i-aS,§.~l))bly Sealed Baskets (MSBs) CMSB-01 through 04 will remain abov.e ambient :t:e.nip~rature during their licensed lives.
This letter provides that analysis. -
Section 1.2.13 of the COC states that movement of the MSBs inside a cask will only be allowed at ambient temperatures of 0°F or above.
This temperature limit assumes that the shell material of each MSB had been shown by Charpy testing to have at least J~ ft-lbs of absorbed energy at -5o*F.
A 50°F inar~in is added to this temperature to establish the COC limit above which MSB movement is permitted.
The MSBs (CMSB-01 through 04) stored in casks with identification numbers CVCC-24-001, 002, 003 and 004 have shell material which does not have 15 ft~lbs of absorbed energy at -S0°F.
These MSBs have 15 ft-lbs of absorbed energy at -40°F.
CPCo conservatively interprets Section 1.2.13 of the COC to restrict the movement of these four casks to temperatures 1-0~F or above, thus retaining the S0°F temperature margin defined in the COC.
The basis of Section 1.2.13 of the COC also states that calculations show that the shel~ temperaiure of a l-0aded MSB (for this interpretation the shield lid mater-i-a l is limiting) will be substant i a 11 y greater than ambient during licensed life. Attachment 1 to this letter provides the calculations which confirm that statement.
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9510060318 950929
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PDR ADOCK 05000255
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I A CMS' ENERGY COMPANY
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SUMMARY
OE COMMITMENTS This letter contains no new.commitments and n.o revisions to existing commitments.
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Richard W. Smedley Manager, Licensing CC Administrator, Region III, USNRC Project Manager, NRR, USNRC NRC Resident Inspector - Palisades Attachment 2