ML20031E897
| ML20031E897 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 09/16/1981 |
| From: | Beckman J GEORGIA POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML20031E889 | List: |
| References | |
| NUDOCS 8110160529 | |
| Download: ML20031E897 (4) | |
Text
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Georg.a Power Company f
e 333 Pcdmont Avenae At'.anta Georgia 30308 Teicprove 404 526-7020 Va kng Address Post Ofhce Ocx 4545 September 16, 1981 Avanta Georg;a 30302 m
Oa Georgia Power t
J. T. Beckham, Jr.
V+ce President and Gererat Vanageir Nuclear Generat,on U. S. Nuclear Regulatory Commission
REFERENCE:
Office of Inspection and Enforcement RII: JP0 Region II - Suite 3100 50-321/50-366 101 Marietta Street, NW Inspection Report 81-21 Atlanta, Georgia 30303 ATTENTION: Mr. James P. O'Reilly GENTLEEN:
Georgia Power Company offers the following in response to NRC Inspection Report 50-321/81-21 and 50-366/81-21 dated August 17, 1981, concerning the notice of violation for Hatch Unit 1 and Unit 2.
VIOLATION A.
Technical Specification 3.7.1.2 requires that two independent Plant Servica Water (PSW) system loops shall be operable during all plant conditions.
Contrary to the above, two independent loops of PSW were not operable in that the Division II PSW supply to the reactor building was found isolated on June 23, 1981.
This condition may have existed for as long as 3 1/2 months. Valve position was last verified on March 8, 1981.
This violation is applied to Unit 2 only.
This is a Severity Level IV Violation (Supplement I.D.3).
RESPONSE
(1) Admission or denial of alleged violation--the event did occur and is admitted.
(2) Reason for violation--the reason for the valve being closed could not be positively identified.
It is suspected that the control switch may have been bumped to the close position due to work in the area.
(3) Corrective steps taken and results achieved--the valve was immediately opened and locked.
A cover was placed over the control switch to prevent inadvertent operation.
All other plant service water Isolation Valves were identified and verified to be in their proper positions.
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1 Georgia Power d U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Atlanta, Georgia 30303 September 16, 1981 Page Two (4) Corrective steps which will be taken--no further actions are planned.
(5) Date when full compliance was achieved--full compliance was acnieved on August 17, 1981.
VIOLATION B.
Technical Specification 4.7.1.2.b requires that plant service water (PSW) system valves that are not locked or sealed have their position verified as correct every 31 days.
Contrary to the above, PSW system valve positions were not being verified every 31 days as required.
Licensee procedures did not address PSW valve position verification requirements.
The licensee had erroneously assumed that equipment operability checks satisfied this requirement.
This violation is applied to Unit 2 only.
This is a Severity Level IV Violation (Supplement I.O.2).
RESPONSE
(1) Aamission or denial of alleged violation--the event did occur and is admitted.
(2) Reason for violation--since the system is in service continuously and required for operation, it was believed that if a major branch of the system was to go out of service (e.g., valve F315 shut) it would be obvious from plant parameters.
(3) Corrective steps taken and results achieved--Plant Service Water, HHR Service Water System and Standuy Service Water Subsystem valve position verification procedure (HNP-2-3187) was written to verify once per 31 days that applicable valves are correctly positioneo.
The procedure includes all valves in the above systems that service s 'ety-related equipment and are not locked, sealed or otherwise sucured in position.
The procedure was approved and implemented on August 17, 1981.
(4) Corrective steps which will be taken--no further actions are planned.
(5) Date full compliance was achieved--full compliance was achieved on August 17, 1981.
L
O Georgia Power d U. S. Nuclear Regulatory Commission Office of Inspection and Enforcerrent Atlanta, Georgia 30303 September 16, 1981 Page Three VIOLATION C.
Technical Srecification 6.8.1 requires that written procedures be established, implemented and mcfatained covering the activities referenced in Appendix A of Regulatory Gide 1.33, Revision 2, February 1978.
Appendix A.4. of the regulatory guide specifies procedures for control of safety-related systems.
Hatch Nuclear Plant Procedure, HP-1-3104, Condenser Vacuum Instrument Test and Calibration, step F.3.P.
requires that the isolation valve to the low vacuum scram switches be left in the open condition with the padlock bracket installed on the valve.
Contrary to the above, the valve referenced in the HP-1-3104 procedure was found not locked.
The tube locking device which was installed to lock three valve handles simultaneously in this system was defective.
The locking device as designed never could lock the valve in question.
Inadvertent closure of this valve resulted in Unit scrams (2) on July 6 and 7, 1981 due to false low vacuum signals.
This violation is applied to Unit 1 only.
This is a Severity Level V Violation (Supplement I.E.).
RESPONSE
(1) Admission or denial of alleged violation--the event did occur.
(2) Reason for violation--the locking device utilized was used incorrectly and therefore did not perform its intended function.
(3) Corrective steps taken and results achieved--the locking devices were replaced with a device which woulo secure the valves and not allow incorrect application.
Other instrument isolation valves locking devices were checked to insure their function was being accomplished. No other cases of unsecured valves were found.
(4) Corrective steps which will be taken--no further action b planned.
(5) Date full compliance was achieved--full compliance was achieved July 8, 1981.
k Georgia Power h U. S. tA; clear Regulatory Commission Office of Inspection and Enforcement Atlanta, Georgia 30303 September 16, 1981 Page Four If you have any questions or comments in regard to our response to Inspection Report 81-21, please contact my office.
J. T. Beckham, Jr. states that he is Vice President of Georgia Power Company and is authorized to execute this oath on behalf of Georgia Power Company, and that to the best of his knowledge and belief the facts set forth in this letter are true.
GEORGIA POWER COWAN/
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By:
GJ.T.Beckham,Jr."
Swor o nd ubscribed befo e m s16thdayofSeptember;eeg.,
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M. Manry R. F. Rogers, III