ML20004E023
| ML20004E023 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 04/17/1981 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML20004D793 | List: |
| References | |
| NUDOCS 8106100628 | |
| Download: ML20004E023 (2) | |
Text
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TEN N E G iEE V ALLEY A UNC ""
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. s-,sr-400 Chestnut Street Tower II April 17, 1981 Mr. James ?. O'Reilly, Directcr Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II - Suite 3100 101 Marietta Street Atlanta, Georgia 30303
Dear Mr. O'Reilly:
SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 - NRC-OIE REGION II INSPECTION REPORT 50-327/81-12, 50-328/81 RESPONSE TO VIOLATION The subject inspection report dated March 27, 1981, cited TVA with one Severity Level IV Violation in accordance with 10 CFR 2.201.
Enclosed is-our response.
If you have any questions, plet le get in touch with D. L. Lambert at FTS 857-2581.
To the best of my knowledge, I declare the statements contained herein are complete and true.
Very truly yours, TENNESSEE VALLEY AUTHORITY
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~L. M. Mills, Manager Nuclear Regulation and Safety Enclosure cc:
Mr. Victor Stello, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 810 6i 10 0 GJ B'
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g ENCLOSURE s.
SEQUOYAH NUCLEAR PLANT UNIT 1 RESPONSE TO VIOLATIOMO Violefcion 50-327/81-12-01 Technical Specification 3 6.1.1 requires that containment integrity shall be maintained in modes 1, 2, 3, and 4 and that containment penetration isolation be verified periodically.
Containment integrity is based in part on 10 CFR 50, Appendix A, Criterion 56, which requires that lines that penetrate containment and are open to the containment atmosphere be isolated by one locked closed volve inside and one locked closed valve outside containment.
Centrary to the above, containment integrity has not been adequately maintained or verified in that, position requirements for the inside containment isolation valve for the service air system, valve 1-33-704, was not included in system operating instruction SOI-88.1, Containment Isolation Integrity. Valve 1-33-704 was normally maintained in ths open position; however, the outside containment isolation valve, 1-33-740, was maintained closed and periodically verified to be in the proper position during unit operation.
This is a Severity Level IV Violation (Supplement I.D.3.).
Admission or Denial of the Alleged Violation The violation occurred as stated.
Reason for Violation Drawing 47W846-2 showed valve i-35-704 as a check valve; therefore, it was not required to be checked closed to establish containment integrity.
Corrective Actions Taken and Resu'ts Achieved Upon the discovery that valve 1-33-704 was a normally open manually operated valve, a temporary alteration control form was issued to ensure that this valve was closed.
Actions Taken to Avoid Further Violations Drawing #.7W846-2 is being changed to show valve 1-33-704 as a normally closed manually operated valve.
1perating instruction SOI-88.1 and surveillance instruction SI-14 are being revised to include valve 1 704. These changes will be completed on or before July 15, 1981.
Date Full Compliance Will be Achieved We are now in full compliance.
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