ML20106J770

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Proposed Tech Spec Changes Re Halon Sys Replacing CO2 Sys in Cable Spreading Room
ML20106J770
Person / Time
Site: Pilgrim
Issue date: 10/29/1984
From:
BOSTON EDISON CO.
To:
Shared Package
ML20106J755 List:
References
NUDOCS 8411010338
Download: ML20106J770 (2)
v • d • e


Text

e LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS

1) at a pressure 50 psig greater than the maximum available pressure at that hose station, or
2) annually at the applicable service test pressure as listed in Table 821 of the

" Standard for Care, Maintenance and Use of Hose" NFPA No. 198-1972, or

c. by replacing each hose with a new or used hose which has been hydrostatically tested in accordance with the pressures specified in 4.12.D.3.b.

E

~E. HALON SYSTEM E. HALON SYSTEM The Halon System for the Cable The Halon System shall be Spreading Room.shall be OPERABLE demonstrated OPERABLE:

with each of the five(5) storage tanks' charged to at least 1. At least once per month by 95% of the minimum quantity of verifying the Halon storage Halon (217 lbs. per tank) tank pressure and that the necessary to extinguish a fire, and control panel is in the minus or plus'10% of the pressure automatic mode.

stamped on the Data Plate on the' tank corresponding to an ambient 2. At least once per 6 months by temperature of-70*F. Detectors verifying the quantity of associated with the automatic Halon in the storage tank (s).

Initiation of the Halon System shall-be operable, except that 3. a. At least once per refuel-Ean individual detector may be ing outage verifying that inoperable if the other detector the system and associated inthe same bay is operable and devices actuate upon both detectors in ALL adjacent receipt of a simulated bays are operable. actuation signal, and APPLICABILITY b. Performance of an inspection to assure At all times when the safety related the nozzles are equipment in the Cable Spreading unobstructed.

Room is required to be operable.

ACTION -

a. Within one-(1) hour from and after the time that the system 1s.found to be inoperable, establish a continuous fire watch with backup fire suppression equipment.

8411010338 84'1029 hDRADOCK 05000293 PDR 1 Amendment No. 206e

r BASES:

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

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

3/4 128, C, D, E FIRE SUPPRESSION SYSTEMS The OPERABILITY of the fire suppression systems ensures thit adequate fire suppression capability is available to confine and extinguish fires occurring in any portion of the facility where safety related equipmelt is located. The fire suppression system consists of the water system, spray &nd/or sprinklers, the Halon System and fire hose stations. The collective capability of the fire suppression systems is adequate to minimize potential damage to safety related equipment and is a major element in the facility fire protection 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).

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.

In the event that portions of the fire suppression water system become 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.

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

Amendment No. 2061

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