ML20154B291
| ML20154B291 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 02/17/1986 |
| From: | Gucwa L GENERAL PUBLIC UTILITIES CORP., GEORGIA POWER CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 0315C, 315C, NUDOCS 8603040275 | |
| Download: ML20154B291 (4) | |
Text
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Georg:a Power Company
)h 333 P:edmont Acence AMant3. Georgo 30308 Tel+1recce 404 62tir65.'6 L83.' ng A.i b en Pett 0"a Bos 4545 AFJ"a Georg a 30302 L T. Gucws ve r out'en tsct c s;Vem Ma:uc;0r Nz!Aar Erg ^eer rg y
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February 17, 1986 c
U. S. Nuclear Regulatory Commission
REFERENCE:
Office of Inspection and Enforcement RII: JNG Region II - Suite 2900 50-321/50-366 101 Marietta Street, NW I&E Report
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Atlanta, Georgia 30323 85-34 ATTENTION: Dr. J. Nelson Grace Gentlemen:
The following information in response to Inspection Report No.
50-k21, 50-366/85-34 dated January 15, 1986 The report concerns the inspection conducted by Messrs. P. Holmes-Ray, G. M.
Nejfelt and L. W. Garner of you office from November 10, to December 20, 1985.
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Violation 1:
Technical Specification Table
- 3. 7,-1 requires that the Reactor Water!
Cleanup valve G31-F001 have a maximisa closure time of 30 seconds.
Contrary to the above, on November 18,1985, valve 1G31-F001 was observed by the inspector to be backseated.
The inspector questioned the closure time from the backseat.
The ifcensee timed the valve from the ~ switch being positioned to closed to the indication that the valve was closbd and found the time to close exceeded the specification time of 30 seconds.
The valve was reopened, but not backscated, and timed again.
This time was within specifications.
This is a Severity Level IV violation (Supplement I) for Unit 1 only.
Response to Violation 1:
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Admission or dental of alleged violation: The violation occurred, f
f Reason for Violation 1:
The root cause of this violation is a procedural deficiency in that existing procedures related to Technical Specification compliance with valve closure time requirements did not contain provisions to
.i assure that the 1G31-F001 valve would meet the closure time requirement of the Technical Specifications from the backseated position.
Corrective steps which have been taken and the results achieved:
e Valve 1G31-F001 was removed from the backseated condition until the unit was shutdown for refueling.
As an interim measure, standing order 30-0PS-02-1185 0603040275 860217 PDR ADOCM 05000321 gg 0
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Georgia Power A U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II - Suite 2900 February 17, 1986 Page Two 4
Response to Violation 1: (continued) was put into effect to require an engineering review prior to leaving a safety-related valve in a backseated condition that has a required closure time.
A check was performed on other backseated valves on i
Units 1 and 2 and no further problems were found.
The procedure for performing electrical backseating,
52GM-MEL-022-05, was written ensuring an assessment is made on the impact to stroke time requirements when backseating a valve.
The procedure also requires Engineering to perform a review to ensure that backseating the valve will not cause valve damage or other possible problems as well as requiring a Maintenance Work Order (MWO) to be generated to repair the valve as the last step in backseating.
The review is to include stroke time data from the backseated position.
Standing order S0-0PS-02-1185 was issued on November 27, 1985 Procedure 52GM-MEL-022-0S was made effective on December 16, 1985.
4 Corrective steps which will be taken to avoid further violations:
The above actions are sufficient to prevent recurrence.
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Date when full compliance was achieved:
The plant achieved full compliance when the valve (lG31-F001) was removed from its backseated condition on November 20, 1985.
Violation 2:
Technical Specification 6.8.1 requires that written procedures be established, implemented and maintained covering maintenance and surveillance activities.
Contrary to the above, Procedure 42SP-DCI-009-1S was incorrect since when performing this procedure on December 6, 1985, shutdown cooling was inadvertently isolated when link CC 80 in panel 1H11 was opened in accordance with procedure 42SP-DCI-009-1S.
The statement to open the link was incorrect.
This is a Severity Level IV violation (Supplement I) for Unit 1 only.
Response to Violation 2:
Admission or dental of alleged violation: The violation occurred.
Reason for violation:
The cause of the violation was an inadequate procedure.
Special purpose procedure, 42SP-DCI-009-1S, had an error in the step concerning opening link CC 80 70077$
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Georgia Power A U; S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II - Suite 2900 February 17, 1986
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Page Three Response to Violation 2: (continued) g Corrective steps which have been taken and the results achieved:
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Ir. mediately after the event occurred the ~ tsolation signal was removed, the valve was opened, the RHR pump was restarted, and shutdown
- cooling was restored.
Temporary modifications were performed per.
30AC-0PS-005-0S (modification sheet number 1-85-171), which included the necessary information from procedure 42SP-DCI-009-lS to prevent the isolation, and allowed the design change work to be finished; Both the writer and reviewer of procedure.42SP-DCI-009-1S were disciplined on Decerser 19, 1985 The seriousness of this event and the importance of performing complete and thorough reviewsyprior to issuing procedures was conveyed as part of the disciplinary action.
The eight other procedures which involved these two individuals were reviewed by December 31,1985,f tof ensure they were correct.
Of the eight procedures, there was one with' a discrepancy similar to that found in 42SP-DCI-009-lS.
This discrepancy was corrected before the procedure was' implemented.
Corrective steps which will be taken to avoid further violation:'
The above actions are sufficient to prevent recurrence.
Date when full compliance was achieved:
The plant achieved full compliance on December 6, 1985 (date of incident) when shutdown cooling was restored.
Violation 3:
Technical Specification 6.8.1 re' quires. that written procedures be established, implemented and maintained covering maintenance and, surveillance activities.
Contrary to the above, procedure 575V-E41-003-2 was not properly performed since.on December 18, 01983, with Unit 2 at rated-conditions, the Instrument and Control technician plugged into the Reactor Core Isolation Cooling (RCIC) module rather than the High Pressure Core. Injection module for differential steam line pressure; This caused the RCIC isolation valve to close. - The error was immediately recognized and the RCIC isolation valve was reopened, returning RCIC to its standby lineup.
- This l's a Severity Level IV violation (Supplement I) for Unit 2 only.
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GeorgiaPower A U. S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II - Suite 2900 February 17, 1986 Page Four Response to Violation 3:
Admission or denial of alleged violation: The violation occurred.
Reason for violation:
Procedure 57SV-E41-003-2 was improperly performed due to personnel error.
Contributing to this event was the fact that the RCIC instrument is located on the same instrument panel approximately three inches above the HPCI instrument.
Corrective steps which have been taken and the results achieved:
The RCIC isolation valve was immediately reopened, returning RCIC to its standby lineup.
Personnel directly involved were disciplined and this specific incident was discussed with other I & C personnel on December 19, 1985, to stress the importance of attention to detail.
Surveillance personnel (I&C) have been rotated to avoid problems with over familiarity with procedures and subsequent mistakes.
Corrective steps which will be taken to avoid further violations:
The above actions are sufficient to prevent recurrence.
Date when full compliance was achieved:
Full compliance was achieved when the RCIC system was returned to its standby configuration on December 18,1985 (date of event).
Please contact this office if you have any questions.
Very truly yours, LZ Cm/%
L. T. Gucwa MJBlackwood/lc xc:
Mr. J. T. Beckham, Jr.
Mr. H. C. Nix, Jr.
Dr. J. N. Grace (NRC-Region II)
Senior Resident Inspector GO-NORMS 700775
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