ML19317D266
| ML19317D266 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 12/15/1977 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Parker W DUKE POWER CO. |
| References | |
| NUDOCS 7911190648 | |
| Download: ML19317D266 (4) | |
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NUCLSAn REGULATORY cot.U.11S510rl t'
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f k, +N f 4 f DEC 151977 Docket Nos. 50-269 50-270 50-287 Duke Power Company ATTH: Mr. William 0. Parker, Jr.
Vice President Steam Production 422 South Church Street P. O. Cox 2178 Charlotte, North Carolina 28242 Gentlemen:
We are currently reviewing the Oconee Nuclear Station fire protection On November 10, 1977, we forwarded you a request for program.
additional information (RFAI) which documented the requests made at a meeting with you en October 7,1977. We find that we need additional information as noted in the enclosure.
It is requested that you respond to the enclosed RFAI within 30 days of receipt of this letter.
Sincerely,!-
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A. Schwencer, Chief Operating Reactors Branch #1 Division of Operating Reactors
Enclosure:
Requests for Additional Information cc w/ encl:
See next page O
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DEC 151977 2-I Duke Peaer Company 4
cc: Mr. William L. Porter Duke Pcwer Company P. O. Box 2178 422 South Church Street Charlotte, North Carolina 28242 J. Michael McGarry, III, Esquire DeBevoise & Liberman 700 Shoreham Building 006-15th Street, NW.,
tJashington, D.C.
20005 Oconee Public Library 201 South Soring Street Walhalla, South Carolina 29691 t
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REQUESTS FOR ADDITIONAL INFOR!!ATION l
OCONEE UNITS 1, 2,_ AND 3 15.
Identify any provisions in turbine building drains, such as backfica prevention devices or drains entering belou sump level, that prevcnt a fire from being transmitted from one area to the next.
Provida drawings showing piping and valving on the drain systems serving sa fety-related. a reas.
16.
Describe whether any of the ventilation systems located at eleva-tion 838 feet of the Auxiliary Building are required for safe shutdo*::n functions, such as required roca cooling for continued equipment operation.
17.
Provide information on the combustibility of the electrical cable used in Oconee and whether it meets the requirements of IEEE 333.
~ 18'.
~ Provide drawings of the turbine building which shcw the rcuting and separation of the power feeds to the 4160 volt engineer'ed safe guards switchgear including feeds in the blockhouse and those external to the building.
19.
Provide drawings showing the piping and valving arrangement for the ' condenser Cooling Uater System including the cross-connection header and HPSW pump connection.
20.
Verify that the Turbine Building roof deck is Factory Mutual Class i construction.
21.
Document plans to install water ficw alarms to the Control Room on all wet pipe sprinkler systems.
22.
Describe the water demands that could be placed on the HPS'd system in addition to fire ficw requirements.
Identify any other normal water demands supplied by the HPSW system.
23.
Identify locations where the HPS'd pumps can be started manually.
l 24.
Describe the potential for a single piping break to cause 1 css o'f automatic and normal fire suppression cacabilities in each area, including the Turbine Building.
This review should also address c
the effects of isolating a hydrant if damaged.
25.
Describe the effects of the loss of electrical buses running along the wall of the Turbine Building and resultant effects on safe shutdcwn capability.
26.
Identify the location of ventilation air intake and exhaust openings and cescrita the potential for smoke being drrc..n into air intakes af ter being exhausted frca another area.
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2-I 27.
Provide drawings on the Turbine Building ventilation system showing location of dampers and capacities of fans.
Describe the c.apability of this system to remove smol:e and heat from the Turbine Building.
28.
Provide information on the location of charcoal filters in relation to safety-related systems and the quantity of charcoal in each filter. Also, provide details of the analysis that indicates 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> is available after loss of cooling air ficw before ignition.
29.
Describe the quantity and type of portable lights available for the fire brigade.
30.
Describe the number and availability of portable radios for use by fire fighters.
31.
Describe the method used to seal Dipe penetrations in fire barriers.
I 32.
Provide dat'a showing the adequacy of fire doors, such as laboratory certifications for unlabeled fire doors and frames in required fire barriers.
33.
Identify the systems in each fire area, including the Turbine Building, which are required for safe shutdown.
This informaticn need not duplicate that provided in the response to staff request number 3 previously provided.
34.
Clarify the combustible loading tables contained in the fire protection layout drawings' submitted December 31, 1976.
The following items 'are wat clear:
(1)
Fire loadings are provided for scme rooms containing combustibles, but not for other rooms; (2)
Total combustibles are provided only for certain rocms; I
(3) The sum of the to'tal combustibles or even the individual room combustibles do not equate or even approximate the totals for oil and cable, insulation provided at the bottom of the chart; l
(4) Uhat type and quantity of combustiblc material is located in each fire area.
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