ML20086D953
| ML20086D953 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 11/21/1991 |
| From: | Zeringue O TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9111260342 | |
| Download: ML20086D953 (4) | |
Text
.
t.m., v,a, A#m g r. 4 OO e h.n 9 0 rn u%. Ums O ) % e' boira. joe 1 y,-. hr a.a n t m w n i w,y cq..,.e m November 21, 1991 U.S. Nuclear Regulatory Comminulon ATTN Document Control Denk Wanhington, D.C.
20555 Centlement In the Matter of
)
Docket Hon. 50-259 Tenneance Valley Authority
)
50-260 50-296 IIROVNS FERRY NUCl. EAR PLANT (liFN) - CONTR01, ROOM EMERuENCY VENTI!.ATION SY3 TEM (CREVS) CORRECTIVE ACTION pl.AN Thin letter provides the achedule for the submittal of the CREVS corrective action plan.
In keference 1, TVA requented approval of a technical specification amendment to allow operation dn g Cycle: 6 of lirowna Ferry Unit 2 with the CREVS conaldered technically inoperable nince it did not meet ita design bania for escentially zero unfiltered inleakage. CREVS la required to remain functional during Cycle 6 and all applicable surveillances are being performed. Approval of thin proponed technical cpecification amendment was provided in Reference 2.
Ao part of Reference 3, TVA committed to prenent the long-term corrective action plan for CREVS to NRC within 90 days af ter Unit 2 rentart.
In Reference 4, TVA notified NRC that thin commitment van ocheduled for November 22, 1991.
At that time, TVA committed to nubmit:
- 1) A description of the control room operator dose calculations and a comparinon to Standard Review plan methodology, and
- 2) A dencription of the modificationn which will be implemented as part of the resolution of this problem.
Since TVA's laat submit'.al,11FN Identified a potential correct ive action plan which requirca further evaluation. This approach would involve the robotic application of a qualified later baned acalant on the innide of the ductwork which transvernen the control room habitability zone. Thin method han the potential for nignificantly reducing the impact of the CREVS corrective actions on control room operationn and warranto a more l
\\
];gb q t12403'Jf 781'A3 OSUOyy '
\\
pOn ADOCK t
2 U.S. Nuclear Regulatory Commission November 21, 1991 thorough evaluation. As previously committed, the resolution of the CREVS deficiencies will be implemented prior to the restart of Unit 2 from the next refueling outage. The submittal of the description of the modifications and the control room operator dose calculations has been scheduled for May 5, 1992.
A summary list of commitments contained in this letter is provided in the enclosure to this letter.
If you have any questions, please contact R. R. Baron, Manager of Site Licensing, at (205) 729-7566.
Very truly yours, 0.'J.
Zeringue Enclosure cc (Enclosure):
NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637 Athens, Alabama 35611 Mr. Thierry M. Ross, Project Manager U.S. Nucicar Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. B. A. WJ1 son, Project Chief U.S. Nucler? Regulatory Commission Region II 10.1 Marietta Street, NW, Suite 2900 Atlunta, Georgia 30323 i
e REFERENCES
- 1) TVA letter, dated February 14, 1989, Unit 1, 2, and 3 Technical Specification No. 265T
- 2) NRC letter, dated September 18, 1989 Technical
-Specification Revisions Concerning Operability of the Control Room Emergency Ventilation System
- 3) TVA letter, dated September 15, 1988, Control Room Habitability
- 4) TVA letter, dated August 21, 1991, Control Room Emergency Ventilation System Corrective Action Plan l
1 i
L l
1
\\~
t ENCLOSURE BROWNS FERRY NUCLEAR PLANT
SUMMARY
OF COMMITMENTS On May 5, 1992, TVA will cubmit:
1.
A description of the control room operator dose calculations and a comparison to Standard Review Plan methodology, and 2.
A description of the modifications which will be implemented as part of the resolution M this problem.
____