ML20212P960
| ML20212P960 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 03/11/1987 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20212P952 | List: |
| References | |
| NUDOCS 8703160414 | |
| Download: ML20212P960 (2) | |
Text
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4.
j :
SEQUOYAH NUCLEAR POWER' PLANT, UNITS 1 & 2 j
SAFETY EVALUATION REPORT FOR EMPLOYEE CONCERN ELEMENT REPORT EN 210.2, " INADEQUATE I
Subiect m
Category: Engineering (EN200)
Subcategory: EQ Process (210)
Element: Inadequate E0 Program (210.2)
The basis for Element Repnrt EN 210.2, Revision 2, dated February 2, 1987, is the following employee concerns:
WI-85-100-005 XX-85-122-014 XX-85-122-015 XX-85-122-016
" Environmental qualification of electrical and I&C equipment and components is inadequate.
Qualification was often not done, or if it was done, records do not exist in many cases, which results in modification or replacement. Current upgrade program for environmental qualifications needs scrutiny. CI has no further information. Anonymous concern via letter."
XX-85-094-013 "Sequoyah: It is the quality problems regarding environrental qualification of comparents per NUREG 0588 that made the Sequoyah plant shutdown. CI has no specifics or hardware details."
HI-85-077-N13 "NRC identified the following concern from review of the QTC file: ' Inadequate environmental cualification/documentations.'"
OE-QMS-4
" Individual had information that might be helpful in the equipment qualification effort."
II.
Summary of Issue The issue defined by TVA is:
/-
A.
The environmental qualification (EQ) progran at Sequoyah is inadequate.
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t A
, B.
Not all required equipment was qualified.
C.
Qualification records do not exist or are inadequate in many cases.
D.
Current upgrade program for E0 needs scrutiny.
III. Evaluation TVA personnel determined that the concerns with the EQ program were valid; however, the Sequoyah EQ program had been determined to be inadequate by TVA management reviews independent of and prior to the filing of these concerns.
The inadequate program was documented in WESTEC/TVA report entitled " Management Review of Environmental Qualification Activities and Documentation for Ccmpliance with 10 CFR 50.49," dated September 25, 1985.
As a result of the iindirgs, Sequoyah was shutdown on August 21-22, 1985, and an extensive new E0 program was implemented at Sequoyah to ensure qualification of all equipment within the scope of 10 CFR 50.49. This program will be completed prior to restart of the plant.
TVA has also addressed these concerns in Nuclear Safety Review Staff (NSRS)
Report I-85-225-SON, " Environmental Qualification / Electrical /I&C Equipment /
Components," dated March 12, 1986, and drew the same conclusions that the WESTEC/TVA report did. The NSRS report concluded that the corrective actions listed in the report, as agumented by the new E0 program described in the SQN Nuclear Performance Plan, should be sufficient to resolve these concerns.
The element report further acknowledged that there were outstanding items to be completed in the EQ program; however, it concluded that once the EQ program was complete these EQ program concerns would be adequately resolved.
The report determined that a long term EQ program has been established to provide continued support in these areas to Sequoyah and other TVA operating units.
IV. Conclusions The NRC staff believes that the TVA investigation of the concerns was adequate, and their resolution of the concerns as described in Element Report EN 210.2, Revision 2, is acceptable. The NRC has conducted inspections of the Sequoyah EQ proaram January 6-17, February 10-14, June 23-27, and December 8-12, 1986, and a final inspection of the program
~
is scheduled prior to Unit 2 restart.
Although deficiencies were found during the inspections, TVA has corrected the deficiencies or will have them corrected prior to restart. Subject to completion of the Sequoyah EQ program by TVA and certification that Sequoyah is in compliance with 10 CFR 50.49,'the staff believes that the Sequoyah EQ program will ensure satisfactory resolution of this issue. Allegations which have a potential impact on these conclusions have not been fully evaluated.
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