ML20003E458

Amend 116 to OL Application,Consisting of Revision 17 to Fire Protection Evaluation Rept

ML20003E458
Person / Time
Site:	Zimmer
Issue date:	04/30/1981
From:	CINCINNATI GAS & ELECTRIC CO.
To:
Shared Package
ML20003E457	List: ML20003E455 ML20003E458
References
NUDOCS 8104030509
Download: ML20003E458 (4)

Text

ZPS-1 REVISION 17 j A-APRIL 1981

} s,,4L(".Y WM.11. ZIMIER POWER STATION INSTRUCTIONS FOR UPDATING YOUR FIRE PROTECTION EVALUATION REPORT To update your copy of the ZPS-1 Fire Protection Evaluation Report, remove and destroy the following pages and insert pages and figures as indicated.

REMOVE INSERT QUESTIONS AND ANSWERS Pages Q0-1 and Q0-2 Pages QO-1 and Q0-2 Page Q4-1 Page Q4-1 <

Figure Q4-1 Figure Q4-1 w.,!

8104030509 '

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ZPS-1 REVISION 17 APRIL 1981

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RESPONSES TO NRC QUESTIONS CONTENTS NUMBER REFERENCE PAGE 1

General Plant Area Ql-1 l17 2

General Plant Area Q2-1 3

Various Plant Areas Q3-1 4

Outside Auxiliary Building Q4-1 5

Section 8.2, Turbine Building QS-1 6

Section 8.4.1, Control Room Q6-1 7

Section 8.4.2, Division 1 Switchgear Area Q7-1 8

Sections 8.4.3, 8.4.8, and 8.4.11, Divisions 1, 2 and 3 Battery Rooms Q8-1 9

Section 8.4.4, Cable Spreading Room Q9-1 10 Section 8.4.5, Auxiliary Equipment Room Q10-1 11 Section 8.4.7, Division 2 Switchgear Area Qll-1 12 Section 8.4.9, Lift Truck Route Into Auxiliary Building Q12-1 13 Section 8.4.10, Division 3 Switchgear Area Q13-1 14 Section 8.4.13. HVAC and Lab Area Q14-1 15 Section 8.4.14, Off-Gas Area Q15-1 16 Section 8.4.16, HVAC Area Q16-1 17 Section 8.4.17, Diesel-Generator Fuel Oil

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Day Tank Cubicles Ql7-1 l17 x_

18 Section 8.4.18, Diesel-Generator Areas Q18-1 19 Section 8.5, Reactor Building Q19-1 14

[4l17 20 Section 8.6, Service Water Building Q20-1 21 Sections 8.7.2 and 8.7.3, Fire Pump Rooms Q21-1 22 Appendix A - D.5 Q22-1 23 General Site Area Q23-1 24 General Site Area Q24-1 l17 25 Appendix A, F.2 Q25-1 26 Appendix A Q26-1 4

27 Ceneral Plant Areas Q27-1 28 Section 8.5.12, Primary Containment Q28-1 AQ1 Valves Not Electrically Supervised AQl-1 AQ2 Deleted AQ2-1 AQ3 Automatic Fi'e Detection in Safe Shutdown 7

Equipment Areas AQ3-1 AQ4 Administrative Controls and Brigade Training AQ4-1 QO-1

ZPS-1 REVISION 17 APRIL 1981 LIST OF FIGURES REFERENCED IN NRC QUESTIONS AND RESPONSES k- )'

NUMBER TITLE Q4-1 Isometric View of Division 2 Diesel Air Intake Q10-1 Firestop Details 17 Q12-1 Division 2 Cable Bus Enclosure M-1, Sheet 3 Property Plat M-133, Sheet 11 Outdoor Piping Plan 2

M-529, Sheet 16 Sleeve Penetration Seal Details M-529, Sheet 17 Sleeve Penetration Seal Details I

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ZPS-1 REVISION 17 APRIL 1981 QUESTION 4 (OUTSIDE AUXILIARY BUILDING)

"A fire in the main auxiliary transfor=er or the reserve auxiliary transformer outside at the southeast corner of the auxiliary build-ing would create excessive s=oke.

Describe how the s=oke from this postulated fire, or any other fire on the south or east side of the building, will be prevented from entering the air intake plenu=s (for the diesel-generator rooms or other areas) which are located on the south wall of the auxiliary building directly above the transformers, and thereby activating the ionization detectors which will discharge CO int the diesel-generator roo=s."

2

RESPONSE

S=oke from an outside source, such as a transformer fire, could possibly enter the air intake louvers located in the auxiliary building vail at colu=n row 15.

The ventilation filters will remove 50% of all particles in the 3-micron range and 100% of particles in the 10-micron range; therefore, the major a=ount of smoke particles would be removed by the ventilation system filters. Additional filtration is available when the evaporative cooling units are operating in the su==er.

The diesel-generator rooms are normally ventilated and maintained at a slight positive pressure by the turbine building ventilation system.

'O The diesel-generator air intake fans operate only when a diesel generator is operating. The CO systems in the diesel-generator roc =s are actuated 2

by fixed temperature detectors, thus the presence of s=oke in the diesel-generator rooms will not cause an inadvertent discharge of the C0 7 syste=s.

The; actuation of the heat detectors in the diesel-generator rooms init-iates an alarm both locally and in the control room prior to actuation

-of the CO fire protection system.

2 At the south end of the auxiliary building a sheet metal enclosure is 7

provided.. Its main purpose is to limit diesel-generator fu=es and 17 smoke from entering the south minimum outside-air intake of the Control 1-room HVAC and Division 2 diesel ventilation syste=.

This enclosure should also limit the possibility of smoke from a transfor=er fire from entering these plenums.

--Since Division 1 and Division 2' diesels provide redundant power supplies to safely shut.down.the plant, the ventilation and combustion air intake

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for.the. Division 2 diesel is routed to the auxiliary building roof

~ (elevation 591 f t 7 in.) to provide a _ separate'and diverse intake for 13

.chis diesel compared to Division 1 (and 3) intakes. The separate and diverse intakes, therefore, provide protection fro = concentrated com-bustion products produced by a fire'from the main transfor=er located south of the.. diesel building at grade (elevation 520 f t 0 in.).

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i REVISION 17 APRIL 1931

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