ML13114A156
| ML13114A156 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/26/2013 |
| From: | Nadiyah Morgan Plant Licensing Branch 1 |
| To: | Heacock D Dominion Nuclear Connecticut |
| Morgan N | |
| References | |
| TAC MF0435 | |
| Download: ML13114A156 (3) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 26, 2013 Mr. David A. Heacock President and Chief Nuclear Officer Dominion Nuclear Connecticut, Inc.
Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711
SUBJECT:
MILLSTONE POWER STATION, UNIT NO.2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING SPENT FUEL STORAGE LICENSE AMENDMENT (TAC NO. MF0435)
Dear Mr. Heacock:
By letter dated December 17, 2012, Dominion Nuclear Connecticut, Inc. submitted a license amendment request to revise Technical Specification (TS) 1.39, "Storage Pattern," TS 3.9.18, "Spent Fuel Pool - Storage," TS 3.9.19, "Spent Fuel Pool - Storage Patterns," TS 5.3.1, "Fuel Assemblies," TS 5.6.1, "Criticality," and TS 5.6.3, "Capacity" for Millstone Power Station, Unit No.2 (Millstone), as a result of a new criticality safety analysis for fuel assembly storage in the Millstone fuel storage racks.
The Nuclear Regulatory Commission (NRC) staff is reviewing the submittal and has determined that additional information is needed to complete its review. The specific questions are found in the enclosed request for additional information (RAI). The NRC staff is requesting a response to the RAI within 45 days of the date of this letter.
If you have any questions regarding this issue, please contact me at (301) 415-1016.
Sincerely,
/1
~ /1
//----
~adiyah S. Morgan, Project Manager Plant Licensing Branch 1-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-336
Enclosure:
RAI cc w/encl: Distribution via Listserv
REQUEST FOR ADDITIONAL INFORMATION REGARDING SPENT FUEL STORAGE LICENSE AMENDMENT REQUEST DOMINION NUCLEAR CONNECTICUT, INC.
MILLSTONE POWER STATION, UNIT NO.2 DOCKET NO. 50-336 By letter dated December 17,2012 (Agencywide Documents Access and Management Systems Accession No. ML12362A391), Dominion Nuclear Connecticut, Inc. submitted a license amendment request to revise Technical Specification (TS) 1.39, "Storage Pattern," TS 3.9.18, "Spent Fuel Pool-Storage," TS 3.9.19, "Spent Fuel Pool-Storage Patterns," TS 5.3.1, "Fuel Assemblies," TS 5.6.1, "Criticality," and TS 5.6.3, "Capacity" for Millstone Power Station, Unit No.2 (Millstone), as a result of a new criticality safety analysis for fuel assembly storage in the Millstone fuel storage racks. In order to complete its review, the Nuclear Regulatory Commission (NRC) staff needs the following additional information:
- 1. Discuss if the neutron absorbing capability of the borated stainless steel rodlets will be maintained such that degradation of the material does not exceed the assumptions made in the criticality analysis of record.
- a. Describe how long each borated stainless steel radlet may be used in the spent fuel pool over the life of the spent fuel pool.
- b. Discuss whether a removed borated stainless steel radlet can be reused in other fuel assemblies. In addition, describe how there is reasonable assurance that the re-used rod let maintains the criticality analysis' assumed boron content of 2 percent. Include in the discussion, the expected maximum calculated fiuence over the life of the spent fuel pool which includes time after the reactor is decommissioned; and if there would be any significant change in the material properties at this calculated fluence.
- c.
Is the program for surveillance and inspection of the poison rodlets described in the letter dated July 16, 1993, currently used at Millstone? If so, discuss in more detail the visual inspection aspect of the program including the parameters to be monitored and acceptance criteria to ensure that there is no material degradation occurring and that the boron content in the rodlets remains at the criticality analysis' assumed boron content of 2 percent.
Enclosure
April 26, 2013 Mr. David A. Heacock President and Chief Nuclear Officer Dominion Nuclear Connecticut, Inc.
Innsbrook Technical Center 5000 Dominion Boulevard Glen Allen, VA 23060-6711 SUB~IECT:
MILLSTONE POWER STATION, UNIT NO.2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING SPENT FUEL STORAGE LICENSE AMENDMENT (TAC NO. MF0435)
Dear Mr. Heacock:
By letter dated December 17,2012 (Agencywide Documents Access and Management System Accession No. ML12362A391), Dominion Nuclear Connecticut, Inc. submitted a license amendment request to revise Technical Specification (TS) 1.39, "Storage Pattern," TS 3.9.18, "Spent Fuel Pool - Storage," TS 3.9.19, "Spent Fuel Pool-Storage Patterns," TS 5.3.1, "Fuel Assemblies," TS 5.6.1, "Criticality," and TS 5.6.3, "Capacity" for Millstone Power Station, Unit No.2 (Millstone), as a result of a new criticality safety analysis for fuel assembly storage in the Millstone fuel storage racks.
The Nuclear Regulatory Commission (NRC) staff is reviewing the submittal and has determined that additional information is needed to complete its review. The specific questions are found in the enclosed request for additional information (RAI). The NRC staff is requesting a response to the RAI within 45 days of the date of this letter.
If you have any questions regarding this issue, please contact me at (301) 415-1016.
Sincerely, Ira!
Nadiyah S. Morgan, Project Manager Plant Licensing Branch 1-1 Division of Operating Reactor licensing Office of Nuclear Reactor Regulation Docket No. 50-336
Enclosure:
RAI cc w/encl: Distribution via Listserv DISTRIBUTION:
PUBLIC RidsNrrDorlLpl1-1 RidsNrrPMMilistone LPL1-1 RtF RidsNrrLAKGoldstein RidsAcrsAcnw_MailCTR RidsNrrDorlDpr RidsRgn1 MailCenter EWong, NRR RidsOGCMailCenter RidsNrrDeEsgb NMorgan, NRR ADAMS A ccesslon N0.: ML13114A156
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--iLI-'IBC NAME NMorgan KGoldstein MYoder for GKulesa Meighan (A) (DPickett r)
! DATE 4/26/2013 4/26/2013*
4/23/2013**
4/26/2013 OFFICIAL RECORD COPY