ML063180409

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Request for Additional Information Regarding Reactor Head Drop in the Licensing Basis
ML063180409
Person / Time
Site: Cook  American Electric Power icon.png
Issue date: 11/24/2006
From: Tam P
NRC/NRR/ADRO/DORL/LPLIII-1
To: Nazar M
Indiana Michigan Power Co
Peter Tam
References
TAC MD3046, TAC MD3047
Download: ML063180409 (4)


Text

November 24, 2006 Mr. Mano K. Nazar Senior Vice President and Chief Nuclear Officer Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106 SUBJECT D. C. COOK NUCLEAR PLANT (DCCNP), UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING REACTOR VESSEL HEAD LIFT IN THE LICENSING BASIS (TAC NOS. MD3046 AND MD3047)

Dear Mr. Nazar:

In a letter dated August 27, 1982, Indiana & Michigan Electric Company (I&M), the former licensee of DCCNP, responded to a letter from the Nuclear Regulatory Commission (NRC) staff dated December 22, 1980, regarding control of heavy loads. On page 9 and Table 2.3.4-c of the enclosure, the licensee referenced a Westinghouse Topical Report, WCAP-9198, Reactor Vessel Head Drop analysis, which evaluated the consequences of dropping a reactor vessel head during refueling operations.

As a result of recent inspection activities involving the subject issue, the NRC staff reviewed the referenced I&M letter against the specific provisions of 10 CFR 50.71, which states, in part, that

[the] submittal shall include the effects of: All changes made in the facility or procedures as described in the FSAR; all safety analyses and evaluations performed by the licensee either in support of approved license amendments, or in support of conclusions that changes did not require a license amendment in accordance with Section 50.59(c)(2) of this part; and all analyses of safety issues performed by or on behalf of the licensee at Commission request [emphasis added]. The updated information shall be appropriately located within the update to the FSAR.

It appears that the August 27, 1982, I&M letter, contained a reactor vessel head drop analysis performed by the licensee at Commission request. Specifically, the I&M letter stated that lifting the reactor head within the bounds set as assumptions in the WCAP-9198 model is safe.

Furthermore, I&Ms letter dated September 22, 2006, Justification for Reactor Vessel Head Lift With Fuel in The Core, continued to rely on the WCAP-9198 model. Accordingly, please either explain in your response to this letter why you believe that your analysis of reactor vessel head drop should not be included in the DCCNP licensing basis (i.e., should not be included in the Updated Final Safety Analysis Report (UFSAR)), or state that you plan to include such in the next update of the UFSAR.

Mr. M. K. Nazar We have previously discussed this information request with Ms. S. Simpson under several occasions. Please respond within 30 days of receipt of this letter. Feel free to contact me if you need clarification on this request for additional information.

Sincerely,

/RA/

Peter S. Tam, Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-315 and 50-316 cc: See next page

ML063180409 OFFICE LPL3-1\PM LPL3-1/LA SBPB SBPB/BC OGC LPL3-1/BC NAME PTam THarris SJones JSegala DRoth LRaghavan DATE 11/14/06 11/14/06 11/15/06 11/15/06 11/17/06 11/24/06 Donald C. Cook Nuclear Plant, Units 1 and 2 cc:

Regional Administrator, Region III Michigan Department of Environmental U.S. Nuclear Regulatory Commission Quality Suite 210 Waste and Hazardous Materials Div.

2443 Warrenville Road Hazardous Waste & Radiological Lisle, IL 60532-4351 Protection Section Nuclear Facilities Unit Attorney General Constitution Hall, Lower-Level North Department of Attorney General 525 West Allegan Street 525 West Ottawa Street P. O. Box 30241 Lansing, MI 48913 Lansing, MI 48909-7741 Township Supervisor Lawrence J. Weber, Plant Manager Lake Township Hall Indiana Michigan Power Company P.O. Box 818 Nuclear Generation Group Bridgman, MI 49106 One Cook Place Bridgman, MI 49106 U.S. Nuclear Regulatory Commission Resident Inspector's Office Mark A. Peifer, Site Vice President 7700 Red Arrow Highway Indiana Michigan Power Company Stevensville, MI 49127 Nuclear Generation Group One Cook Place James M. Petro, Jr., Esquire Bridgman, MI 49106 Indiana Michigan Power Company One Cook Place Bridgman, MI 49106 Mayor, City of Bridgman P.O. Box 366 Bridgman, MI 49106 Special Assistant to the Governor Room 1 - State Capitol Lansing, MI 48909 Susan D. Simpson Regulatory Affairs Manager Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106