ML20057G102
| ML20057G102 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 10/14/1993 |
| From: | J. J. Barton GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| C321-93-2284, NUDOCS 9310200174 | |
| Download: ML20057G102 (3) | |
Text
..
r k
GPU Nuclear Corporation G - U M-uclear
- s;,or
- :mr388 e
Forked River. New Jersey 08731-0388 609 971-4000 Wnter's Direct Dial Number:
C321-93-2284 October 14, 1993 U.S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, DC 20555 l
t
Dear Sir:
Subject:
Oyster Creek Nuclear Generating Station Docket No. 50-219 Reply to a Notice of Violation (Inspection Report 93-11)
In accordance with 10 CFR 2.201, Attachment I provides GPU Nuclear's reply to l
the Notice of Violation as documented in the subject Inspection Report.
t If you should have any questions or require further information, please contact Brenda DeMerchant, OC Licensing Engineer at (609) 971-4642.
\\
/
l Very tr11y ours, Q
s Jo n J. B V'ce Pres nt & Director yster Cre k i
~
JJB/BDEM:jc cc:
Administrator, Region 1 Senior NRC Resident Inspector 3
Oyster Creek NRC Project Manager 9310200174 931034 Of gDR ADOCK 05000219 PDR GPU Nuc; ear Cupo' anon is a w;snNry n! Genee PwN u ?
- a Comrenn j
4 ATTACHMENT 1 VIOLATION:
Title 10 CFR 50, Appendix B, Criterion XVI, " Corrective Action," requires that measures shall be established to assure that conditions adverse to quality are promptly identified and corrected.
Contrary to the above, on July 9,1993, the NRC identified that a condition adverse to quality had existed since July 9,1992, which had not been corrected.
The condition concerned inadequate controls for monitoring vital switchgear room temperatures to ensure that the design basis maximum temperature is not exceeded.
4 This is a severity level IV violation (Supplement I).
RESPONSE
GPUN concurs with the violation as stated.
The violation occurred when guidance issued via memo to mitigate temperature concerns was not implemented. Consequently, a heat wave which occurred in early July,1993, caused temperatures in both switchgear rooms to reach 100 F.
Immediate actions were taken to reduce and monitor switchgear room i
temperatures to prevent exceeding the 104 F design basis value for electrical components.
l l
A contributing cause to this violation was the fact that engineering / technical guidance was issued via memo rather than using a controlled work 1
request / tasking / tracking system such as the Technical Functions Action Item l
system.
i Corrective Actions and Results Achieved:
3 The high temperature setpoint of the temperature alarm for the 480V Switchgear i
Room has been changed from 105 F to 104 F, Additionally, the alarm response procedure for 480V switchgear room high temperature has been reviewed to incorporate manual corrective actions outlined in engineering memo #5310 1 045. Thermometers have been installed in the 480V Switchgear Room and the Reactor Building Summer Tour Sheet has been revised to include monitoring room temperature twice per shift.
J i
'w s
~
C321-93-2285 J
'(Attachment 1 i
Page 2)
)
In the 4160V Switchgear Room, thermometers have been installed and the Turbine Building Summer Tour Sheet has been revised to include monitoring room temperature twice per shift.
During the July heat wave, the roll-up fire barrier doors between the A&B and C&D 4160V busses were raised in accordance with engineering memo #5310-93-165 to reduce the high temperature condition in the C&D bus fire barrier enclosure. As a result, room temperatures did not exceed 100 f.
l To address the concern of engineering / technical guidance being issued via
- memo, a directive has been issued by the Site Director advising personnel to use the Technical functions Action Item Tracking System, in lieu of a memo, in instances where action is requested on the part of the Receiving Department.
These actions are complete.
Corrective Actions tp be Taken:
Procedure revisions will be made to include guidance to reduce Switchgear Room temperatures such as opening fire barrier doors, using portable fans and opening security doors. Additionally, the use of portable fans with flexible ducting will be investigated as a viable solution to high temperatures in the switchgear rooms.
Date Wheq_ Full Compliance will be Achieved:
Full compliance was achieved on 7/9/93 when the above corrective actions were implemented to monitor and alleviate switchgear room temperatures. The additional corrective actions specified above shall be completed by 4/1/94.
l
_ _ _. _ _ _ _... _ _ _. _ _ _.,.