ML20084U955
| ML20084U955 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry, Sequoyah  |
| Issue date: | 04/15/1991 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML082420247 | List: |
| References | |
| NUDOCS 9104240159 | |
| Download: ML20084U955 (2) | |
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UNITED STATES n,1 NUCL " NEGULATORY COMMISSION
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uGHINoToN, D.C. 2005 o
ENCLOSURE 2 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR-REACTOR REGULATION TVA CORRECTIVE ACTION PLAN DEVIAT10h]
TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT, UNITS 1 AND ?
BROWNS FE'RRY NUCLEAR PLANT, U,1TS 1, 2 AND 3 1
DOCKET NOS. 50-259, 50 260. 50-296. 50-327 AND 50-328 1.0 REVIEW OF SEQUOYAH DEVIATIONS The NRC staff reviewed deviatio9 22303-SQN-01 whisn was identified in TVA reportdatedJune8,1990(Reference 1). The deviation involved changes to corrective actions that TVA had previously comitted to implement in its j
resolution of employee concerns. These corrective actions had been previously reviewed by the NRC staff and found acce 11,1988(ptable. Reference 2),
The previous staff-evaluation was forwarded to TVA on March Deviation 22303-SQN-01 was a significant change to the proposed corrective action for establishing the seismic adequacy of the field-mcunted instruments. The original corrective-action was to be implemented in two phases. The firet phase required TVA to establish the. seismic adequacy of field-mounted instruments for the.Sequoyah Unit 2 restart boundary prior to Unit 2 restart. The second phase required TVA to establish the seismic adequacy of the remaining safety-related field-mounted instruments for Units 1 and 2 prior to the Unit I restart. TVA's deviation changed the second phase of the corrective action from a requirement to establish the seismic adequacy of the remaining field-mounted instruments prior to Unit I restart to a requirement to establish the adequacy of the remaining field-mounted instruments as maintenance activities are performed. Based on TVA's June 8
-1990 letter, it appears that this deviation was approved after the Sequoyah Unit I restart. NRC discussed this issue with TVA in a conference call on August 24, 1990.
In a subsequent call.aetween TVA and the staff, TVA stated that work associated with the Sequoyah Unit I restart boundary 'had been completed.
Since TVA's June B, 1990 letter did not provide any justification for the deviation, the staff does not concur with the proposed deviation to the
. original corrective action. A schedule for cortpletion of the original correctiveactionplan(CAP)shouldbegiventothestaff.
The staff reviewed the other Sequoyah-related Level II and III CAP deviations discussedintheTVAsubmittalsofApril3,1989(Reference 3)andJune8,1990 (Reference 1) and found them acceptable. The Sequoyah-related Level I deviations are discussed in Enclosure 1 to this letter.
9104240159 910415 PDR ADOCK 05000259 P
7 2-2.0 REVIEW OF BROWNS FERRY OfVIATIONS The staff reviewed the Browns Ferry-related Level I,ference 3), June 8,199 II and III CAP deviations discussed in the TVA submittals of April 3, 1989 (Re (Reference 1)andOctober 29, 1990 (Reference 4) found them acceptable.
3.0 CONCLUSION
S The staff reviewed TVA's Level I,11 and III CAP deviations for Browns Ferry and Sequoyah and found them acceptable except for_22303-SQN-01. A schedule for completion of this corrective action program plan should be given to the staff.
4.0 REFERENCES
1.
Letter from E. G. Wallace (TVA) to NRC, dated June 8,1990, forwarding the "Second Annual Report of Employee Concerns Special Program Corrective Actions Implementation, October 1,1988 - December 31, 1989."
2.
Letter from G. G. Zech (NRC) to S. A. White (TVA), dated March 11, 1988, forwarding the " Preliminary Safety Evaluations on the Tennessee Valley Authority Employee Concern Element Reports."
3.
Letter _ from C. H. Fox, Jr. (TVA) to NRC, dated April 3,1989, forwarding the " Annual Report of Employee Concerns Special Program Corrective Actions Implementation, February 1,1986 - September 30, 1988."
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Letter from E. G. Wallace (TVA)-to NRC, dated October 29 1990, " Safety Evaluation _ Report on the Tennessee Valley Authority Employee Concerns Subcategory Reports - Browns Ferry Nuclear Plant, Units 1, 2, and 3 -
- May 31,-1990."
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-Principal Contrib'utor:
P. Cortland Dated: April 15, 1991 i
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