ML20235E429

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Proposed Tech Specs Re Fire Water Supply Sys
ML20235E429
Person / Time
Site: Pilgrim
Issue date: 09/21/1987
From:
BOSTON EDISON CO.
To:
Shared Package
ML20235E418 List:
References
NUDOCS 8709280113
Download: ML20235E429 (3)
v • d • e


Text

LIMITING CONDITION FOR OPERATION SURVEILLANCE REQUIREMENTS B'. Fire Water Sucolv System B. Fire Hater Sucolv System The Fire Water Supply System 1. The Fire Water Supply shall be operable with: System shall be tested and verified to be OPERABLE:

1. Two (2) 2000 gpm/125 psig fire pumps which are a. by checking the volume arranged to start of water in each fire automatically. water tank at least once every 7 days.
2. Two (2) water supplies with a minimum storage b. by automatically quantity of 240,000 starting each fire gallons of water in each, pump at least once every month and
3. Two (2) independent water running each pump for flow paths from Item Nos. thirty minutes at that 1 & 2 above to each fire time.

l water suppression system.

I (3.12.C and 3.12.E) c. by visually checking every shutoff valve on APPLICABILITY the fire water supply system at least once

, At all times when any safety every month for proper l related equipment is required to position.

be OPERABLE.

d. by cycling each fire ,

ACTION: water supply system l l shutoff valve through

a. With less than the above its full operation at required equipment, restore least once per cycle.

the inoperable equipment to 1 OPERABLE status within 7 days e. by verifying at least or prepare and submit a once per cycle that ]

report to the Commission each pump starts and within the next 30 days delivers at least 2000 outlining the plans and gpm while maintaining procedures to be used to a system pressure of provide for the loss of at least 125 psig.

redundancy in this system.

l f. by performing a water i b. With no FIRE SUPPRESSION flow test on the fire l HATER SYSTEM OPERABLE: water yard loop at least once every year.

1. Establish the backup Fire Hater Supply System within g. by verifying at least 24 hrs, once every month that the diesel fire pump
2. If the requirement of b.1 fuel storage tank above cannot be met, an contains a minimum of orderly shutdown of the 175 gallons of fuel reactor shall be initiated oil.

and the reactor shall be in the cold shutdown condition within 24 hrs.

1 Amendment No. 206a kbb P

f

ILE S: .

3/4.12A FIRE DETECTION INSTRUMENTATION OPERABILITY of the fire detection instrumentation ensures that adequate warning capability is available for the prompt detection of fires. This capability is required in order to detect and locate fires in their early l stages. Prompt detection of the fires will reduce the potential for damage to j safety related equipment and is an integral element in the overall facility i fire protection program.

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In the event that a portion of the fire detection instrumentation is l inoperable, increasing the frequency of fire watch patrols in the affected l areas is required to provide detection capability until the inoperabl 1 instrumentation is returned to operability. {

3/4.128. C. D. E FIRE SUPPRESSION SYSTEMS l

The OPERABILITY of the fire suppression systems ensures that adequate fire '

suppression capability is available to confine and extinguish fires occurring in any portion of the facility where safety related equipment is located. The fire suppression system consists of the water system, spray and/or sprinklers, the Halon System and fire hose stations. The collective capability of the fire suppression system is adequate to minimize potential damage to safety -

related equipment and is a major element in the facility fire protection l program.

The surveillance requirements provide assurances that the minimum OPERABILITY requirements of the fire suppression systems are met. The allowance is based on the minimum quantity of Halon necessary to extinguish a fire. The minimum quantity is 217 lbs. per tank, and the system requires a minimum of 5 tanks at all times. This is in accordance with the National Fire Codes. Operability is assured by verifying the quantity of Halon and pressure in the tank (s).

The backup Fire Water Supply System is established by connecting the Pilgrim water distribution system to the city system through a booster pump truck (stationed onsite). The truck connects to the Plymouth city water system at a predesignated location in close proximity to the plant; dedicated hoses and I auxiliary equipment for this purpose are staged onsite. ) l The backup Fire Water Supply System does not provide 1007. backup to the entire l primary fire water system but rather provides a temporary means of supplying )

water until at least ont train of the fire suppression water system is j declared operable.  :

In the event that portions of the fire suppression system are inoperable, alternate backup fire fighting equipment is required to be made available in ,

the affected areas until the affected equipment can be restored to service.

)

Amendment No. 206i 1

,..- t Jn the event that. portions. of' the fire suppression cater ' system become inoper .

able,' alternate backup fire fighting' equipment is required to be made,available

.in the affected areas until'the affected equipment can be restored to service.

In.the event that the fire suppression water system ecomes inoperable, L immediate corrective measures must be-taken since this system provides the-major fire suppression capability of the plant.

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l Amendment No. 2061-1

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