ML19210D233
| ML19210D233 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 10/24/1979 |
| From: | Parker W DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML16162A286 | List: |
| References | |
| NUDOCS 7911260173 | |
| Download: ML19210D233 (3) | |
Text
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DUKE POWER COMPANY Powen Bu Lotwo 422 SocTn Cnuncu STurzT, CnAntoTTE, N. C. 28242 October 24, 1979 WILU AM O. PA R K E R, J R.
wer Patsiormt TELEP=owt:Aata 704 STf au Pooovciron 373-4083 s _.
Mr. James P. O'Reilly, Director
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U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, Suite 3100 c._
Atlanta, Georgia 30303 N
Re: RII:FJ 50-269/79-23 50-270/79-21 50-287/79-23
Dear Mr. O'Reilly:
With regard to Mr. R. C. Lewis' letter of October 2, 1979, which transmitted IE Inspection Report 50-269/79-23, 50-270/79-21, 50-287/79-23 Duke Power Company does not consider the report to be proprietary.
Please find attached our responses to the cited items of noncompliance.
Very truly yours,
/
/
& & ~ 6?du/~ C William O. Parker, Jr.
p KRW:scs 1301 053 7911260
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OTHCJAL COIY
I DUKE POWER COMPAN't OCONEE NUCLEAR STATION Response to IE Inspection Report 50-269/79-23, -270/79-21, -287/79-23 ITEM Duke Power Company letter from W. O. Parker, Jr., to H. R. Denton, NRR, dated June 29, 1979, stated that the fire barrier penetrations would be completed by July 1, 1979, and that the cubic penetration fire stops were completed Decem-ber 31, 1978, as required by the NRC's Fire Protection Safety Evaluation Report for Oconee Nuclear Station dated August 11, 1978.
Contrery to the above, as of August 17, there were five identified items incom-plete with regard to five barrier penetrations and cubic penetration fire stops.
These were:
- 1) "Firewall 50" was determined inadequate around cables in a floor penetra-tion in the Unit #1 equipment room cable shaft;
- 2) "Firewall 50" surrounding cables supported by a square of unistrut was found to be inadequate in the Unit 2 equipment room near the smoke exhauster fan-3) lift ring holes in the concrete hatch in Unit #2 equipment room had not been reformed after being used;
- 4) no fire barrier was established in and around Cable ISX3A which penetrated the wall of Unit #1 equipment room; and,
- 5) door between Units 1 and 2 cable rooms discovered open without a fire watch.
All penetrations listed breached designated fire barriers.
RESPONSE
- 1) Fire barrier was reestablished on August 17, 1979
- 2) Fire barrier was reestablished on August 17, 1979 To minimize recurrence of the types of items listed above which resulted from degradation or modification of apparently correctly installed barriers a main-tenance procedure is being developed to ide stify and periodically inspect fire barriers. This procedure will be approved and issued by January 1, 1980.
- 3) Fire barrier was reestablished on September 27, 1979. A sign identifying the lift ring holes as penetrations requiring a fire barrier will be placed on hatch to prevent recurrence.
1301 054
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- 4) The size of the " breach" was insufficient to require a fire 'rarrier. The manufacturer of "Firewall 50" has identified a half-inch gap as a reason-able criteria for judging whether breaches exist. The gap in this case was less than one half-inch.
- 5) Fire barrier was ree.atablished on August 27, 1979. Periodic inspection of fire doors is currently being performed to prevent recurrence.
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