ML14308A015
| ML14308A015 | |
| Person / Time | |
|---|---|
| Site: | Holtec, Arkansas Nuclear  |
| Issue date: | 11/03/2014 |
| From: | William Allen Spent Fuel Licensing Branch |
| To: | Pyle S Entergy Operations |
| Allen W | |
| References | |
| TAC L24954 | |
| Download: ML14308A015 (4) | |
Text
November 3, 2014 Ms. Stephenie L. Pyle Manager, Regulatory Assurance Arkansas Nuclear One Entergy Operations, Inc.
1448 S.R. 333 Russellville, AR 72802
SUBJECT:
REQUEST FOR EXEMPTION FROM HOLTEC INTERNATIONAL CERTIFICATE OF COMPLIANCE NO. 1014 FUEL SPECIFICATION AND LOADING CONDITIONS AT ARKANSAS NUCLEAR ONE INDEPENDENT SPENT FUEL STORAGE INSTALLATION - REQUEST FOR ADDITIONAL INFORMATION (TAC NO. L24954)
Dear Ms. Pyle:
By letter dated October 2, 2014, as supplemented October 14, 2014, Entergy Operations, Inc.
(Entergy) submitted a request for exemption from fuel specification and loading conditions in the Holtec International Certificate of Compliance No. 1014, Amendment No. 5, which is employed at their Arkansas Nuclear One Independent Spent Fuel Storage Installation.
The U.S. Nuclear Regulatory Commission (NRC) staff has determined that additional information is required to complete its technical review of your application. The request for additional information (RAI) is identified in the enclosure to this letter. We request that you provide this information by December 9, 2014, to support issuance of the exemption in January, 2015. Please inform us at your earliest convenience, but no later than November 28, 2014, if you are not able to provide the information by that date. To assist us in re-scheduling your review, you should include a new proposed submittal date and the reasons for the delay.
Please reference Docket Nos. 50-313, 50-368, 72-13, and 72-1014 as well as TAC No. L24954 in future correspondence related to this exemption request. If you have any questions regarding this matter, feel free to contact me at (301) 287-9225.
Sincerely,
/RA/
Chris Allen, Project Manager Spent Fuel Licensing Branch Division of Spent Fuel Management Office of Nuclear Material Safety and Safeguards Docket Nos.: 50-313, 50-368, 72-13, 72-1014 TAC No. L24954
ML14308A015 OFC:
SFM SFM SFM SFM SFM NAME: WAllen WWheatley via e-mail JSolis via e-mail CAraguas via e-mail MSampson DATE:
10/31/14 10/31/14 11/3/14 11/3/14 11/3/14
Arkansas Nuclear One cc:
Senior Vice President Chief Operating Officer Entergy Operations, Inc.
1340 Echelon Parkway Jackson, MS 39286-1995 Arkansas Department of Health Radiation Control Section 4815 West Markham St., Slot 30 Little Rock, AR 72205-3867 Winston & Strawn 1700 K Street, N.W.
Washington, DC 20006-3817 Senior Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 310 London, AR 72847 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 1600 East Lamar Blvd.
Arlington, TX 76011-4511 County Judge of Pope County 100 West Main Street Russellville, AR 72801 Executive Vice-President, Nuclear Operations and CNO Entergy Services, Inc.
1340 Echelon Parkway Jackson, MS 39286-1995 Vice President, Oversight Entergy Operations, Inc.
1340 Echelon Parkway Jackson, MS 39286-1995 Wise, Carter, Child & Caraway P. O. Box 651 Jackson, MS 39205 Director, Nuclear Safety Assurance Entergy Operations, Inc.
Arkansas Nuclear One 1448 S.R. 333 Russellville, AR 72802 Mr. Jeremy Browning Vice President Operations Arkansas Nuclear One Entergy Operations, Inc.
1448 S. R. 333 Russellville, AR 72801 Manager, Licensing Entergy Operations, Inc.
Arkansas Nuclear One 1448 S.R. 333 Russellville, AR 72802 Arkansas Department of Health Arkansas Nuclear Planning and Response Program P.O. Box 1749 Russellville, AR 72811
Enclosure Request for Additional Information Entergy Operations, Inc.
Docket Nos. 50-313, 50-368, 72-13, 72-1014 Exemption Request By letter dated October 2, 2014, as supplemented October 14, 2014, Entergy Operations, Inc.
(Entergy) submitted a request for exemption from fuel specification and loading conditions in the Holtec International Certificate of Compliance No. 1014, Amendment No. 5, which is employed at their Arkansas Nuclear One Independent Spent Fuel Storage Installation.
Request for Additional Information
- 1.
Identify the technical specifications or applicable Final Safety Analysis Report location where there is any specified limit on the MPC surface while it is located in the transfer cask (HI-TRAC).
Page 2 of Attachment 1 to ANO letter 0CAN101403 states that HI-TRAC/MPC annulus temperatures have remained steady at approximately 130°F to 135°F. This temperature monitoring may indicate the user needs to show compliance with an established limit.
Therefore, the staff needs to make sure a thermal limit is not been exceeded for the MPC in this configuration.
This information is needed to assure compliance with 10 CFR 72.236(f).
- 2.
Clarify the statements None of the rectangular openings in the entire fuel basket are credited in the thermal analysis, so that the deposition of any fuel-related debris such as crud would be bounded. and A fuel pellet in contact with the baseplate would efficiently reject heat to the baseplate through conduction and would continue to be cooled by the thermosiphon natural convection flow through the mouseholes.
The first statement (see Section 2.2.3 of Holtec Report HI-2146265) seems to contradict Page 4.4.-4 of FSAR Section 4.4.1.1.ii.d which states the mouseholes are explicitly modeled, while the second statement (on same report) contradicts the first statement. In addition, the impact of one or more blocked mouseholes, either partially or completely, on the natural convection heat transfer capabilities of the MPC does not appear to have been analyzed in the FSAR. Therefore, since natural convection heat transfer was employed in the HI-STORM thermal model, it is difficult for staff to determine how the statements in the FSAR bound the current as-loaded configuration.
This information is needed to assure compliance with 10 CFR 72.236(f).