ML17354A527
| ML17354A527 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 06/16/1997 |
| From: | Croteau R NRC (Affiliation Not Assigned) |
| To: | Plunkett T FLORIDA POWER & LIGHT CO. |
| References | |
| TAC-M97422, NUDOCS 9706190014 | |
| Download: ML17354A527 (6) | |
Text
Mr. T.
F. Plunkett
~
-President - Nuclear ~ sion Florida Pow'er and Light Company P.O.
Box 14000 Juno
- Beach, Florida 33408-0420 3une 16, 1997
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FIRE BARRIERS EXEMPTION-TURKEY POINT UNITS 3 AND 4 (TAC NOS.
M97422 AND M97423)
Dear Mr. Plu'nkett:
By letter dated December 12, 1996, you submitted a request for exemption from the requirements for raceway fire barriers in outdoor fire zones at Turkey Point Units 3 and 4.
We are reviewing and evaluating your request and have determined that additional information, as discussed in the enclosure, is needed in order for the staff to complete its review.
We request that the information be provided within 30 days of receipt of this letter.
Sincerely, Docket File PUBLIC TP Reading ARCS SVarga LTran OGC
- JJohnson, RII Docket Nos.
50-250 and 50-251
Enclosure:
As Stated cc w/
Enclosure:
See next page Distribution Original signed by Richard P. Croteau, Project Manager Project Directorate II-3 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation f)Fdg MIC HLK CMii'Rmi V Document Name:
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Ye /No Yes No OFFICIAL REC D COPY 97061900i4 9706i6 PDR ADOCX 0S000ZS0 F
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Mr. T. F. Plunkett Florida Power and Light Company TURKEY POINT PLANT CC:
M. S.
- Ross, Attorney Florida Power
& Light Company P.O.
Box 14000 Juno
- Beach, FL 33408-0420 John T. Butler, Esquire
- Steel, Hector and Davis 4000 Southeast Financial Center Miami, Florida 33131-2398 Mr. Robert J.
Hovey, Site Vice President Turkey Point Nuclear Plant Florida Power and Light Company 9760 SW. 344th Street Florida City, FL 33035 Armando Vidal County Manager Metropolitan Dade County 111 NW 1 Street, 29th Floor Miami, Florida 33128 Senior Resident Inspector Turkey Point Nuclear Generating Station U.S. Nuclear Regulatory Commission P.O.
Box 1448 Homestead, Florida 33090 Mr. Bill Passetti Office of Radiation Control Department of Health and Rehabilitative Services 1317 Winewood Blvd.
Tallahassee, Florida 32399-0700 Mr. Joe Myers, Director Division of Emergency Preparedness Department of Community Affairs 2740 Centerview Drive Tallahassee, Florida 32399-2100 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 61 Forsyth Street, SW., Suite 23T85
- Atlanta, GA 30303-3415 Attorney General Department of Legal Affairs The Capitol Tallahassee, Florida 32304 Plant Manager Turkey Point Nuclear Plant Florida Power and Light Company 9760 SW. 344th Street Florida City, FL 33035 Mr. H.N. Paduano, Manager Licensing
& Special Programs Florida Power and Light Company P.O.
Box 14000 Juno
- Beach, Florida 33408-0420 Mr. Gary E. Hollinger Licensing Manager Turkey Point Nuclear Plant 9760 SW. 344th Street Florida 'City, FL 33035 Mr. Kerry Landis U.S. Nuclear Regulatory Commission 61 Forsyth Street, SW., Suite 23T85
- Atlanta, GA 30303-3415
RE/VEST FOR ADDITIONAL INFORMATION REGARDING RACEWAY FIRE BARRIER EXEMPTION TURKEY POINT UNITS 3 AND 4 DOCKET NOS. 50-250 AND 60-251
- 1. 0 INTRODUCTION By letter dated December 12, 1996, Florida Power and Light, the licensee for Turkey Point Units 3 and 4, requested an exemption from the requirements of 10 CFR Part'0, Appendix R,Section III.G.2.a, for electrical raceway fire barrier system (ERFBS) used in outdoor fire zones, excluding the turbine building area.
The licensee requested approval to use 25-minute raceway fire barr iers for cer tain outdoor applications in lieu of the 1-hour fire barriers which were previously approved (refer to SERs.dated March 27,
- 1984, and August 12, 1987).
This request was based on (1) the fire loading and potential fire severity in these zones are low; (2) there are minimal ignition sources in these zones; (3) transient ignition sources and combustibles are controlled in these zones; and (4) manual fire fighting equipment is readily accessible to these zones.
The licensee proposed to use, the following fire protection schemes in lieu of the required protection criteria specified in Section III.G.2 of Appendix R:
a.
Separation of cables and equipment and associated non-safety circuits of redundant trains west of the Open Turbine Building Structure Column Line A by a 1-hour rated fire barrier until a horizontal distance of 20 feet is attained.
Mater suppression is provided for the major combustible sources;
- however, no suppression or detection is provided for the raceways.
b.
C.
Separation of cables and equipment and associated non-safety circuits of redundant trains by a 25-minute fire barrier until a horizontal distance of 20 feet is attained.
No suppression or,detection is provided.
Separation of cables and equipment and associated non-safety circuits of redundant trains by a 25-minute fire barrier until a horizontal distance of 10 feet is attained in roof top locations.
No suppression or detection is provided.
d.
Separation of cables and'equipment and associated non-safety associated circuits of redundant trains by a radiant energy heat shield having an equivalent 30-minute fire rating until.a horizontal distance of 20 feet is attained.
A radiant energy shield may be combustible.
No suppression or detection is provided.
This request for additional information is concerned with the above separation schemes and the scope of their use.
ENCLOSURE
2.0 RE(VEST FOR ADDITIONAL INFORHATION In order to support the staff'.s review of. the.requested exemption,-the--following
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additional information is requested:
a.
Certain protection schemes proposed by the licensee utilize ERRFBS with either 1-hour. or 25-minute fire endurance ratings until either 10 feet or 20 feet of separation is obtained..
Confirm that for the outdoor fire zones where redundant post-fire safe shut, down trains/functions are separated by a horizontal distance of 20 feet or more and for roof top fire zones separated by a horizontal distance of 10 feet or more, the intervening space between these safe shutdown trains is free of in-situ or transient combustibles.
b.
For each fire zone describe the protection scheme which will be used to separate redundant post-fire safe shutdown trains.
Specifically, identify the redundant post-fire safe shutdown trains/functions located within each fire zone; describe by fire zone, the raceway routing for each post-fire safe shutdown function and its separation from the redundant train; identify the conduit/raceway (e.g., plant raceway identification number), and the post-fire safe shutdown function being protected by either a
ERFBS or a radiant energy heat shield, and the extent that they are protected in each zone (e.g.,
protected by a 25-minute ERFBS along its entire route through the fire zone or protected from column line XXX to YYY on elevation ZZZ).
c ~
For the Thermo-Lag radiant energy heat shield used to provide post-fire safe shutdown train separation, describe the shield design and its construction attributes.
In addition, for each fire zone where they are used, address how the design of these outdoor radiant energy heat shields will provide an adequate level of fire safety and provide reasonable assurance that one train of post-fire safe shutdown capability will be maintained free of fire damage.
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