ML20212L280
| ML20212L280 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 02/27/1987 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8703100332 | |
| Download: ML20212L280 (5) | |
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V TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 37401 SN 157B Lookout Place FEB 271987 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Office of Nuclear Reactor Regulation Washington, D.C.
20555 Attention:
Dr. J. Nelson Grace In the Mattar of
)
Docket Nos. 50-327 Tennessee Valley Authority
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50-328 SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 - NRC REGION II INSPECTION REPORT NOS.
50-327/86-65 AND 50-328/86 RESPONSE TO VIOLATION
- provides our response to your January 28, 1987 letter which transmitted Notice of Violation No. 327/85-65-01 for the Sequoyah Nuclear Plant. is a list of those actions in this submittal which TVA considers to be commitments.
If you have any questions, please call G. B. Kirk at (615) 870-6549.
To the best of my knowledge I declare the stctements contained herein are complete and true.
Very truly yours, TENNESSEE VALLEY AUTHORITY
/
R. Gridley, rector Nuclear Safety and Licensing Enclosures cc:
see page 2 8703100332 870227 PDR ADOCK 05000327 g
G PDR
$'O i i An Equal Opportunity Employer
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e U.S. Nuclear Regulatory Commission FEB 271987 cc (Enclosures):
Mr. J. J. Holonich Sequoyah Project Manager U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue Bethesda, Maryland 20814 Mr. James M. Taylor, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Mr. B. J. Youngblood U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue Bethesda, Maryland 20814 Mr. G. G. Zech, Director TVA Projects 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 4
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.c ENCLOSURE 1 RESPONSE - NRC INSPECTION REPORT NOS. 50-327/86-65 and 50-328/86-65 GARY G. ZECH'S LETTER TO S. A. WHITE DATED JANUARY 28, 1987 During the Nuclear Regulstory Commission (NRC) inspection conducted on November 17-20, a violation of NRC requirements was identified. The violation involved design control for HVAC seismic supports.
In accordance with the
" General Statement of Policy and Procedure for NRC Enforcement Actions," 10 CFR Part 2, Appendix C (1986), the violation is listed below:
10 CFR 50, Appendix B, criterion,III, as implemented by paragraph 17.1.3 of TVA Topical Report TVA-TR75-1A, requires that measures shall include provisions to assure that appropriate quality standards are specified and included in design documents and that deviations from such standards are controlled.
The design control measures shall provide for verifying or checking.the adequacy of design.
i contrary to the above, design control measures were not provided for verifying or checking the adequacy of design in that no original design calculations were found for KVAC seismic supports 1030 HDABHVAC-0820, 0822, and 7965.
This is's Severity Level V violation (Supplement I).
1.
Admission or Denial of the Alleged Violation TVA admits the violation.
2.
Reason for the Violation Lack of an effective administrative control system for maintaining retrievability of these calculations.
3.
Corrective Action Taken and Results Achieved To ensure the integrity of the questioned supports, TVA performed design l
calculations to assess the adequacy of the variance to typical HVAC duct support 47A055-144. These calculations demonstrate that the HVAC seismic support meets design requirements.
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4.
Corrective Steps Which Will Be Taken to Avoid Further Violations TVA Division of Nuclear Engineering issued a Civil Engineering Branch (CEB) Policy Memorandum (PM) 86-02, Revision 1, " Civil Discipline Policy l
For Design Calculations," dated December 2, 1986.
This PM was written to J
establish a program for achieving a consistent, continuous approach in development and maintenance of civil discipline calculations.
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..The PN identifies the calculations which are essential and also requires a project specific implementation plan for calculations.
The Sequoyah Civil Implementation Plan contains criteria to categorize essential calculations as pre-or postrestart. Prerestart essential calculations,will be verified for retrievability before restart of the unit associated with the calculations. Any calculation in this category which cannot be retrieved will be regenerated before restart of the applicable unit. All calculations identified as essential but not required for restart will be verified for retrievability or regenerated after restart, 5.
Date When Full Compliance Will Be Achieved Those calculations designated as required for restart by the Sequoyah Civil Impl~ementation Plan will be verified for retrievability, or regenerated if necessary, by April 1, 1987, for unit 2 and before restart of unit 1 as applicable to that calculation. A schedule for calculations which are essential but not required for restart is currently being developed as part of implementation of the program plan.
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4 ENCLOSURE 2 ACTION DATE TVA will verify retrievability of all calculations April 1, l'987, for identified by the sequoyah Civil Implementation unit 2 or unit i restart Plan as essential and required for restart by as applicable for that either verifying retrievability or regenerating calculation, unretrievable calculations.
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