ML20236A045
| ML20236A045 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 03/07/1989 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 8903160319 | |
| Download: ML20236A045 (2) | |
Text
t' TENNESSEE VALLEY AUTHORITY CH ATTANOOGA, TENNESSEE 37401 SN 157B Lookout Place MAR 071989 U.S. Nuclear Regulatory Commission ATTN:
Document Control Desk Hashington, D.C.
20555 Gentlemen:
In the Matter of
)
Docket Nos. 50-327 Tennessee Valley Authority
)
50-328 SEQUOYAH NUCLEAR PLANT (SQN) - TEMPORARY EXEMPTION FROM ADMINISTRATIVE PROVISIONS OF 10 CFR 50.46 - ASSOCIATED COMMITMENT REVISIONS
References:
1.
TVA letter to NRC dated September 19, 1988, "Sequoyah Nuclear Plant (SQN) - Request for Temporary Exemption from Administrative Provisions of 10 CFR 50.46" 2.
NRC letter to TVA dated October 26, 1988, " Temporary Exemption to 10 CFR 50.46(a)(1) - Sequoyah Nuclear Plant, Unit 1 (TAC R0052)"
3.
TVA letter to NRC dated November 3, 1988, "Sequoyah Nuclear Plant (SQN) - Temporary Exemption From Administrative Provisions of 10 CFR 50.46" 4.
TVA letter to NRC dated December 5, 1988, "Sequoyah Nuclear Plant (SQN) - Temporary Exemption from Administrative Provisions of 10 CFR 50.46 - Request for Additional Information" 5.
NRC letter to TVA dated January 26, 1989, " Exemption to 10 CFR 50.46(a)(1) for Operating Cycle 4 - Sequoyah Nuclear Plant, Units 1 and 2 (TAC R00496, R00497)"
In reference 1, TVA provided justification for a temporary exemption to certain administrative provisions of 10 CFR 50.46.
The temporary exemption was to remain in effect until a confirmatory upper head injection (UHI) emergency core cooling system (ECCS) analysis could be performed.
TVA committed to submit this analysis to NRC on or before May 31, 1989.
Reference 2 granted this temporary exemption and recognized the associated commitment.
In references 3 and 4, TVA submitted additional information to justify extending the exemption for the entire cycle 4 operation of both SQN units.
This in turn would support TVA's schedule to remove UHI from service during the cycle 4 refueling outage of SQN units 1 and 2.
NRC granted this exemption for cycle 4 operation in reference 5.
Reference 5 also recognized TVA's I
commitment (originally made in reference 3) to restart SQN units 1 and 2 from their respective cycle 4 refueling outages with the necessary modifications, s90307 3 $$bc.,k 0300$f'$7
.I I
An Equal opportunity Employer
U.S. Nuclear Regulatory Commission MAR 071989 license amendments, and evaluation models required by 10 CFR 50.46 to support plant operation with UHI removed from service. To support this commitment, Westinghouse Electric Corporation (W) will be preparing a non-UHI ECCS analysis for SQN units 1 and 2.
This analysis will be generated by the utilization of an approved code in accordance with 10 CFR 50.46.
W is currently scheduled to provide TVA with this analysis in mid-August 1989.
Submittal of this analysis to NRC is expected to occur in mid-October 1989.
In any event, submittal of the non-UHI ECCS analysis will occur in time to support the above commitment.
Subsequently, the commitment provided in reference 1 is considered superseded and closed.
Please direct questions concerning this issue to R. R. Thompson at (615) 843-7470.
Very truly yours, TENNESSEE VAL >EY AUTHORITY
- /
R. Gridley, Ma ager Nuclear Licensing and Regulatory Affairs cc: Ms. S. C. Black, Assistant Director for Projects TVA Projects Division U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. F. R. McCoy, Assistant Director for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Sequoyah Resident Inspector Sequoyah Nuclear Plant 2600 Igou Ferry Road Soddy Daisy, Tennessee 37379
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