ML17298C043
| ML17298C043 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 04/15/1985 |
| From: | Van Brunt E ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| ANPP-32398-EEVB, NUDOCS 8504170422 | |
| Download: ML17298C043 (14) | |
Text
REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS) 1 ACCESSIOfl NSR:8504170422'OC.DATE:
85/04/15 NOTARYD:
TES DOCKET' FACIL:STN-50-528 Palo Verde Nuclear Stationq Unit 1~ Ar)zona Publi 05000528 STN 50-529 Palo Verde Nuclear Station~
Unit 2~ Arizona Pub'li 05000529 STN-50-530 Palo Verde'uc'lear Stations Unit 3i Arizona Publi 05000530 AUTH ~ NAME AUTHOR AFFILIATION VAN BRUNTEE",E ~
Arizona Public Ser vice Co.
'RECIP ~ NAME RECIPIENT AFFILIATION KNIGHTONE G ~ W ~
Licensing Branch 3
SUBJECT:
Forwards draft: of proposed, change to FSAR Section 9B,2 to correct combustible loading error in fire Zone 54,Correct combustible loading is 66 minutes<not 1 minute as indicated in FSAR Amend 13
'ISTRIBUTION CODE:
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TITLE:
OR Submittal:- Fire Protection NOTES:Standardized
- plant, OL: 12/31/84 Standardized plant ~
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Arizona Nuclear Power Project P.o, BOX 52034 e
PHOENIX, ARIZONA85072-2034 ANPP-32398/EEVB/tiFQ April 15, 1985 Director of Nuclear Reactor Regulat3.on Attention:
George W. Knighton, Chief Licensing Branch No.
3 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D. C.
20555
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Units 1, 2, and 3
Docket Nos.
STN 50-528(License No. NPF-34)/529/530 FSAR Appendix 9B Change-Fire Zone 54 File:
85-056-026
'G.l.01.10
Dear Mr. Knighton:
Enclosed is a draft of a proposed change to FSAR Section 9B.2.
The purpose of this change is to correct the combustible loading in Fire Zone 54.
An error occurred in the combustible loading shown in FSAR Amendment 13 which indicated an equivalent fire severity of 1 minute.
The correct combustible loading is 66 minutes consisting primarily of IEEE-383 qualified non-safety related cable in trays.
In evaluating and providing fire protection for Zone 54, we were aware of the relatively heavy cable concentration in the zone and did not base fire protection on the incorrect loading provided in Amendment 13 of the FSAR.
This error occurred in the particular evolution of calculations, which went into FSAR Amendment 13.
Upon rechecking, it has been determined that this was an isolated error which did not occur in the combustible loading calculations for any of the other fire zones.
The cable trays in Zone 54 are equipped with line type heat detection.
Ionization smoke detectors are also installed at the ceiling for early warning.
A manual hose station is located in the adjacent corridor for manual fire fighting.
The zone is surrounded by gypsum board partitions with self closing hollow metal fire doors and sealed penetrations.
Train "B" safe shutdown circuits are located in the adjacent corridor, but the Train "A" safe shutdown systems are offset one level below and are provided with one hour wrap with automatic detection and suppression.
Appendix R
separation and protection'is provided and there is no fire exposure to redundant safe shutdown circuits or equipment from Zone 54.
Cable trays in the adjacent
- corridor, Zone 52D are protected with an automatic preaction water suppression system installed in the cable trays.
Automatic water suppression was not provided for Zone 54 because of the motor control centers located in the zone.
This subject was discussed with NRC fire protection reviewer, Dennis Kubicki, on March 1, 1985.
He had asked Charles
- Ramsey, NRC-I8E, to evaluate this zone during the March 4-8, 1985 Appendix R Audit.
After the audit, Mr. Kubicki advised Mr. D. K. Neal of our staff, by phone, on March 15, 1985 that no additional physical modifications to Zone 54 would be required.
We believe that the NRC safety evaluation contained in SER Supplement No.
7 is still valid, but should be revised to reflect the corrected combustible loading.
BSQ4l70422 BSQ415 PDR ADOCK QSQQQ528 PDR
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George W. Knighton, Chief FSAR Appendix 9B Change-Fire Zone 54 ANPP-32398 Page 2.
If you have any questions, please contact Mr. W.F. Quinn of my staff.
Very truly yours, E. E.
Van Brunt, Jr.
Executive Vice President Project Director EEVB/DKN/das Enclosure cc:
R. P.
Zimmerman (all w/a)
P. Quells (Region V)
E. A. Licitra D. J. Kubicki A. C. Gehr
ANFP-'32398 STATE OF ARIZONA
)
) ss ~
COUNTY OF MARICOPA)
I, Donald B. Karner, represent that I am Assistant Vice President, Nuclear Production of Arizona Nuclear Power
- Project, that the foregoing document has been signed by me on behalf of Arizona Public Service Company with full authority to do so, that I have read such document and know its
- contents, and that to the best of my knowledge and belief, the statements made therein are true.
Donald B. Karner Sworn to before me this~
day of k
1985.
Notary Public My Commission Expires:
My Commfssfon Expfres Aprff 6,
$987
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ZONE 54 F.
Combustible Loading 1.
In-SITU Combustible Load Quantity/Type 1,075 pounds of cable insulation (Hypalon) 9,194 pounds of cable insulation (Other) 4 pounds of oil and grease 2.
Transient Combustible Load Quantity/Type 50 pounds of ordinary combustible 20 pounds of oil and grease 3.
Total Combustible Loading 88,000 BTU/FT 4.
Equivalent Fire Severity 66 Minutes
I
PVNGS FSAR FIRE HAZARDS ANALYSIS
~
One non-rated door (pair) in the non-rated north wall to Zone 52D 4 ~
Sealed Penetrations Seals equal or exceed fire barrier ratings.
Fire Dampers Duct penetrations in the rated fire barriers are provided with fire dampers of equal or greater rating.
5.
6.
Protected Raceways None Protected Structural Members None C.
D.
E.
F.
g+SE EV Safety Related Equipment and Components
~
Reactor trip switchgear
~
CEDM control cabinets
~
CEDM control'cabinets room normal ACUs.
~
Train A conduit
~
Train B conduit Non-Safety Related Equipment and Components Cable trays and conduit Radioactive Material None Combustible Loading antity/Type
~
1 d of cable insulation (Hypalon)
~
10 pounds o
e insulation (other)
~
4 pounds of oil and grea
>31 Amendment 13 9B.2.15-174 August 3.984
I,(
F, Q. G+ C6~
PVNGS FSAR FIRE HAZARDS ANALYSIS 2.
'tu Combustible Load 1, 400 Btu/ft 3.
Transient Co u
Load 4.
Equivalent Fire Severity G.
Fire Detection inute Ionization smoke detector system(s) is provided for early warning.
H.
Fire Suppression 1.
Primary One manual hose reel is located in adjacent Zone 53.
One manual hose reel is located in adjacent Zone 52D.
2.
Secondary One portable CO2 fire extinguisher is located in adjacent Zone 53.
One portable CO2 fire extin-guisher is located in adjacent Zone 52D.
K.
L.
Uentilation Flow through air filtration unit to outside Drainage Five 4-inch drains.
Emergency Lighting Egress lighting with 8-hour battery unit(s) is provided.
Emergency Communication Sound powered phone jack(s) is provided.
August 1984 9B.2.15-175 Amendment 13
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