ML20138N694

Rev 0 to Evaluation of Hose Length - Standpipe Sys at Crystal River Unit 3

ML20138N694
Person / Time
Site:	Crystal River
Issue date:	07/19/1985
From:	Olaughlin R PROFESSIONAL LOSS CONTROL, INC.
To:
Shared Package
ML20138N683	List: 3F1285-03, Forwards Fire Protection Evaluations 4, Domestic Water Supply to Nuclear Svc & Decay Heat Seawater Pump Bearings & 5, Crystal River Unit 3 Hose Station Length Discrepancies. Fee Paid ML20138N694
References
NUDOCS 8512240116
Download: ML20138N694 (8)

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EVALUATION-0F-HOSE LENGTH - STANDPIPE SYSTEM-AT CRYSTAL RIVER UNIT 3 FLORIDA POWER CORPORATION

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Submitted: July 19, 1985 Rev. 0 Prepared by:

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. Robert J. O'LaughMn, P.E., C.S.P.

Senior Fire Protection Engineer P

Professional Loss Control, Inc..

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- TABLE OF CONTENTS Page 1.0

. Introduction.........................................

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' Problem Statements...................................

2 3.0 - Sy stem Des c ri pti on................... ^...............

3 4.0-. Calculations.........................................

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C o n cl u s i on...........................................

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j EVALUATION w

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. HOSE LENGTH - STANDPIPE SYSTEM AT

. CRYSTAL RIVER UNIT.3 i

FLORIDA POWER' CORPORATION-

' 1.0~ INTRODUCTION,.

' The' manual hoselstations for the standpipe system. at Crystal' River -

Unit L 31are distributed. throughout the plant 'in both. safety related L areas-and the1 balance; ofIthe. plant.

The' hose standpipe system's-design -land. installation are based upon the guidelines established by-

Appendix "A" to the Branch Technical Position APCSB 9;5-1 and NFPA-14

" Standpipe and

• dose Systems "

The primary -intenti: of ~ the entitled

standpipe and hose ~ system in safety related areas is to provide manual

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fire' fighting ' capability for the protection of-safety' related. equip -

ment and systems. The fire fighting -capability is maintain'ed for-safe (shutdown ' functions ;and minimizing radioactive releases to the environ-s:

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'c 2.0 -PROBLEM STATEMENT Appendix "A"

to1 the BTP 9.5-1 states that interior manual hose-installation should be able to reach any ' location with at least one effective hose stream.

To accomplish this. -standpipes with hose con-nections, equipped with a maximum of.75 feet of 1-1/2 inch woven Jacket-lined fire hose and suitable nozzles should be provided in all buildings, including containment, on all floors and should be spaced

-at-not more than 100-foot interv'als.

NFPA.14-states that each hose connection provided for use by building occupants (Class 11 service) shall be equipped with not more than 100 ft. of ~1isted 1-1/2' inch ; lined, collapsible-or noncollapsible fire hose attached and ready for use.

The present manual hose installation can not reach all safety related areas with an effective hose stream.

Examples of this include el.

145' of the Control Complex and el.164' of the Control Complex.

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g-w 3.0 ' SYSTEM DESCRIPTION' The three (3) fire pumps take suction from two ground storage tanks, each having 360,000 ~ gallon capacity.

These storage tanks are. dedi-cated to' fire protection.

The one electric driven and two diesel driven fire pumps are each rated at 2000 gpm and 125 psig.

System pressure - is ' maintained ~ by a. 30 gpm pressure maintenance pump at.110 psig.

If system pressure in the Fire Service Pump House drops below 95 psig,;the electric driven pump starts; if_ the pressure falls below-

85. psig, one diesel driven pump starts; and, if the pressure drops below 75_ psig, the second diesel driven fire pump starts.

Shut off pressure (churn presf<ure) is approximately 150 psig.

The pressure relief valves on the ' diesel. driven fire : pumps are set at 150 psig.

The fire pumps are each capable of supplying 50% of the maximum plant water demand.

The maximum plant demand is based upon 4000 gpm for a main power transformer fire -(water spray. system and Turbine Building

wall' water curtain) plus 1000 gpm for manual hoses (outside water streams).

Each fire pump is capable of supplying 100% of the water demand in safety related areas.

The yard loop water distribution system is constructed of 12 inch nom-inal diameter cement lined cast iron pipe.

1 The standpipe risers and horizontal cross -mains are either four (4)'

. inch in diameter or six -(6) inch in diameter.

Refer to Flow Magram FD-302-231, Sheets 1-2, Rev.:27.

Most of the hose stations that are connected to risers contain-75 feet of 1-1/2 inch hard rubber hose with.~ variable fog pattern nozzles.

Operation of any fire hose will

, cause at least one fire pump to start and alarm in the Control Room.

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24.0 CALCULATIONS

- One solution to not' having the capability to reach all safety related areas of the plant with an effective hose stream is to provide each hose station with 150 feet of rubber lined fire hose.

Worst case scenarios include the.following:

4.1 Use of Hose Station-FSV-162-Heater Bay Platform hose station will be used to manually fight fire on the 164' elevatien in the Control Complex.

Assumptions:

- At least one f. ire pump operates.

- Pressure loss in the underground yard loop and risers

- is negligible.

- 150 ft. of hose-(1-1/2 in.) rubber lined is installed on the hose reel.-

- 100 gpm flow in hose.

Hose Line Fire Stream Calculations

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• FL = 24 Q L FL = Pressure Loss 1003 2 x 150 Q = (GPM) Flow '

=24;TNJ TN 100 i

= 36 PSI L = Length (ft.)

100 E1.. Pressure = (164' - 119') x 0.433 PSI = 19.5 psi TtT

.c Total Pressure Loss = 36 psi - 19.5 psi = 55.5 psi Pressure Available at Nozzle = 150 psi - 55;5 psi = 94.5 psi This nozzle pressure, 94.5 psi, is adequate to produce an effective

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hose stream.

• NFPA Fire Protection Handbook,15th Edition, Table 16-71

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4.2 Use of. Hose Station FSV-169-El. 119' Intermediate Building.

This hose-station will be used to manually fight fire on the 119'1 elevation of the Intermediate Building along with the

wet pipe sprinkler system.

Assumption:-

~At least one fird pump operates.

150 ft. of hose (1-1/2 in.) rubber lined is installed t-on the hose reel.

L1000 gpm;is used by the wet pipe sprinkler system (per NFPA.13.,'1985 Edition, Table 2-2.1 (A) Ordinary Hazard NOTE:-. This is a very conservative assumption:

At an average of= 25 gpm per sprinkler - 40 would operate.

100,gpm flow'for the hose.

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- The pressure drop with 1000 gpm flow in the 12 inch yard piping system is.' negligible.. This ' is based.on a C-140 with 1000 gpm flow in 1000' feet of 12 inch pipe, the ' pressure ' loss is 'less than

.1 psi.

With the ; yard piping system-having. multiple flow paths (loops) the pressure ~' loss. would be less than the above.

The

- connects' to the yard piping -system are not located adjacent to -

- one another.-

M Hose Line Fire Stream Calculations:

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• FL = 24 Q L FL = Pressure Loss.

24/100y2x 150 Q~= F1ow (GPM)'

=

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TOU 100-36 PSI ~

-L = Length (Ft.)

=

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El. Pressure = (119' - 119') x 0.433 PSI = 0 Tt:

. Total Pressure Loss = 36 PSI Pressure Available at Nozzle = 150 PSI - 36 PSI = 114 PSI This nozzle pressure,114 PSI, is adequate to produce an effective hose stream..

• NFPA Fire Protection Handbook,15th Edition. Table 16 - 71 5

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5.0 CONCLUSION

The hose-stations on the standpipe system could be provided with 150 i

-feet 'of 1-1/2 inch rubber 111ned fire hose so that fire hose can reach all safety related. areas with an effective hose stream.

t This. is _ based upon the pressure / flow characteristics of ' the fire pumps,- yard loop water distribution system, and standpipe risers.

The hydraulic calculation for two scenarios, high elevation and simul-taneous flow of a hose stream.and sprinkler system, indicate that ade-quate flow and pressure are available with 150 ft. of 1-1/2 inch rub-ber lined hose.

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