ML17347A280
| ML17347A280 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 02/11/1987 |
| From: | Woody C FLORIDA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| L-87-68, TAC-61428, TAC-61429, NUDOCS 8702190356 | |
| Download: ML17347A280 (11) | |
Text
REGULATORY IQORNATION DISTRIBUTION 'SYBQN'BIDS)
ACCESSIQN NBR: 8702190356 DOC. DATE: 87/02/11 NOTARIZED:
NQ DOCKET 0 FACIL:50-250 Turkey Point Planti Unit 3I Flov ida Power and Ligh+
C 05000250 50-251 Turkey Point Plant.
Unit 4 Flov ida Power and Light C
05000251 AUTH. NANE AUTHOR AFFXLXATIQN NQQDYi C. 0 Flov ida Power 5 Light Co.
I RECIP. NANE RECIPIENT AFFILIATION Document Contv ol Branch (Document Cbntrol Desk )
SUBJECT:
Fov cards addi info fov'60425 v equest for exemtion fv on cev tain App R> Section XI X. Q. 2 requiv ements> pev 870112 request. Equipment 8c lav ge number of. cables associated u/safe shutdoUJn functions located in ou+doov' iv'e zones.
DISTRIBUTION CODE:
AOOAD COPIEB RECEIVED:LTR i.ENCL I
SIZE:
TITLE: QR/Licensing Submittal: Fire Protection NOTES:
RECIPIENT ID CODE/NANE PNR-A PD2 LA NcDONALD> D INTERNAL: ADN/LFl"1B XE LlHITNEY>L NRR NERNEILiJ06 COPIES LTTR ENCL 1
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EXTERNAL: LPDR NSIC 03 05 1
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FEBRUARY 11 1987 L-87-68 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555 Gentlemen:
Re:
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-25 I Request for Additional Information Exemption to IO CFR 50, Appendix R,Section III.G.2 NRC TAC Nos. 6 I428 and 6 I429 By letter dated April 25, l986 (L-86-l64) Florida Power
& Light Company requested certain technical exemptions to IO CFR 50, Appendix R,Section III.G.2 requirements for specific areas of Turkey Point Plant Units 3 and 4.
Our response to your January l2, l987 request for additional information, required to complete your review of our April 25, l 986 submittal, is attached.
If there are any further questions, please contact us.
Very truly yours, C.. Woody
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Group Vice President Nuclear Energy COW/TCG/gp Attachment cc:
Dr. J. Nelson Grace, Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, Turkey Point Plant 8702190356 870211 PDR ADOCK 05000250 F
PDR TCG6/024/ I an FPL Group company
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ATTACHMF-NT REQUEST FOR ADDITIONAL INFORMATION APPENDIX R EXEMPTION REQUESTS TURKEY POINT NUCLEAR PLANT DOCKET NOS. 50-250 AND50-25 I NRC QUESTIONS The following information is needed to complete our evaluation of the Appendix R exemption request made in your April 25, l 986 letter.
I.
Attachments I & 2" Provide details as to the number, location, and size of penetrations in the fire barrier.
Quantify the fire load in terms of Btu per square foot. Provide the minimum separation between redundant safe shutdown cables in these areas.
- 2.
Identify and provide the location of the safe shutdown cables and equipment in these zones.
Describe and give the location of any specific fire hazards present.
- 3.
Clarify the specific instances for which exemptions are requested.
Identify the safe shutdown cables and equipment affected.
Quantify the fire load in term of Btu per square foot and identify and give the location of specific fire hazards.
Provide actual separation distances between safe shutdown cables and equipment.
Note: Attachment numbers in this RAI refer to those of the Licensee's submitted.
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RESPONSE
1.
Attachments 1 8c 2*
The following penetrations are located in the fire barriers addressed by Attachments 1 R 2:
Pire Area/Zone Pire Barrier Prom To No.
Penetration Opening Size Penetrating No R Type Item AAA/24 A/5 24P(floor)
E002 2" embedded sleeve Cables AAA/24 A/5 AAA/24 A/5 AAA/24 A/5 AAA/24 A/4 24F 24F 24P 24P E003 E008 E009 M001 2" embedded sleeve 2" embedded sleeve 2" embedded sleeve Slightly larger than penetra-ting item Cables Cables Cables 15-3/Sn instrument tubes P/48 P/48 P/49 P/50 A/10 A/10 A/10 A/10 48P M006 49P (floor)
M001 50P (floor)
M001 48P (floor)
M005 6" embedded sleeve 6" embedded sleeve 6" embedded sleeve 6" embedded sleeve 3" pipe 3" pipe 3" pipe 3'ipe Fire loading in each Pire Zone in terms of BTU per square foot:
Pire Area/Zone A/4 A/5 AAA/24 A/10 F/48 P/49 F/50 BTU/Sq. Ft.
32,800 45,500 Negligible 19,000 Negligible Negligible Negligible Attachment numbers refer to our submittal dated April 25, 1986.
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Minimum separation between safe shutdown cables measured through the unsealed penetrations.
Pire Area/Zone Prom To Minimum Distance Between Safe Shutdown Cables Remarks A/4 AAA/24 23'here are.no safe shutdown cables in zones 01, 02, 03, 23 and 24 of Fire Area AAA. The closest safe shutdown cables are located two zones away from zone 24.
A/5 A/10 AAA/24 P/48 23'7'ee above There are no safe shutdown cables in Zone 48.
Safe shutdown cables are located in the hallways on Elevations 10'0" and 18'0" in Zones 10 and 58 respectively.
Zone 48 is enclosed by full height concrete shield walls and the doorway is,protected by a shield door.
A/10 P/49 There are no safe shutdown cables in Zone 49.
Safe shutdown cables are located in the hallways on Elevations 10'0" and 18'0" in Pire Zones 10 and, 58 respectively.
Zone 49 is enclosed by full height concrete shield walls and the floor penetration is located behind a labyrinth wall.
A/10 P/50 40'here
,are no safe shutdown cables in Zone 50.
Safe shutdown cables are located in hallways on Elevations 10'0" and 18'0" in Zones 10 and 58 respectively.
Zone 51 separates Zone 50 from Zone 58.
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- 2.
Equipment and a large number of cables associated with safe shutdown functions are located in outdoor fire zones.
The majority of the cables and equipment are located in Fire Zones V9, 84 and 89, for which exemptions were granted in the March 2V, 1984, SER.
The current exemption request is intended to ensure that all outdoor fire zones are addressed even though limited numbers of these safe shutdown cables are located in these zones.
In addition, all 'B'rain safe shutdown circuits located in outdoor fire zones are protected by one hour fire rated wrap.
The predominant fire hazards located in the Turbine Building are identified by the fire zone description listed in the exemption request.
With the exception of condensate pumps, all of these hazards are located along the western perimeter of the Turbine Building, on the opposite side of the Turbine Building from Fire Zones 79, 84 and 89, which interface with the Auxiliary Building, Control Building and both Containment Buildings.
- 3.
Numerous safe shutdown related components and cables are located within the Unit 3 and Unit 4 Containment Buildings.
Cables are routed in conduit and in cable trays, designated SA and SB, that usually run outside the secondary shield wall at tray elevations ranging from 18'7" to 80'0".
These trays are not typically separated by a barrier but are vertically separated by a nominal distance of 4'0" and horizontally by 1'6".
In addition, redundant circuits are separated by a horizontal distance of 20'r a radiant energy shield except in cases where exemptions were granted in the March 2V, 1984, SER.
The fire load in terms of BTU per square foot is 121,000 BTU per square foot for Unit 3 Containment and 117,000 BTU per square foot for Unit 4 Containment.
While the figures appear high, they are based on a small floor area (10,600 square feet) versus a large volume (1.5 million cubic feet.) and a combustible inventory which includes reactor coolant pump lubricating oil which is provided with an oil collection system as required by Appendix R Section III.O.
The only other sources of concentrated combustibles are the charcoal filters and the polar crane gear case oil. The arrangement of these combustibles and a description of other containment features are included in the Turkey Point Appendix R Report submitted in Apriland June, 1983.
WP/DISC OB0017/REPORT/WILLIAMS/0187/P
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