ML17324A736

Revised Tech Spec Table 3.7-5,changing HVAC Charcoal Filter Fire Suppression Sys Mode of Operation to Manual

ML17324A736
Person / Time
Site:	Cook
Issue date:	03/14/1986
From:	INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML17324A733	List: ML17324A729 ML17324A736
References
NUDOCS 8603200227
Download: ML17324A736 (6)

Text

TABLE 3.7-5 SPRAY AND/OR SPRINKLER SYSTEMS A. OPEN HEAD DELUGE TYPE WATER SYSTEMS LOCATION ACTUATION 1-HV-AES-1 Charcoal Filters Manual 6 Electric-heat 1-HV-AES-2 Charcoal Filters Manual 6 Electric-heat 12-HV-AFX Charcoal Filters* Manual 6 Electric-heat 1-HV-CPR-1 Charcoal Filters Manual 6 Electric-heat 1-HV-CIPX-1 Charcoal Filters Manual 6 Electric-heat 1-HV-ACRF-1 Charcoal Filters Manual a Electric-heat B. CLOSED HEAD SPRINKLER TYPE WATER SYSTEMS LOCATION TYPE SYSTEM ACTUATION Auxiliary Bldg. Cask Handling Preaction Sprinkler Dry Pilot Area*

Auxiliary Bldg. Drumming Area* Preaction Sprinkler Dry Pilot Auxiliary Bldg. Elev. 587* 6 Preaction Sprinkler Dry Pilot 609* (Corridors, charging, safety Inj. pump rooms, laundry area)

Reactor Coolant Pumps (4) Preaction Sprinkler Manual

• Shared system with D. C. COOK UNIT 2.

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D C. COOK - UNIT 1 3/4 7-46 Amendment No.

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TABLE 3.7-5 f SPRAY AND/OR SPRINKLER SYSTEMS A. OPEN HEAD DELUGE TYPE WATER SYSTEMS LOCATION ACTUATION 2-HV-AES-1 Charcoal Filters Manual & Electric-heat 2-HV-AES-2 Charcoal Filters Manual & Electric-heat 12-HV-AFX Charcoal Filters* Manual & Electric-heat 2-HV-CPR-1 Charcoal Filters Manual & Electric-heat 2-HV-CIPX-1 Charcoal Filters Manual & Electric-heat 2-HV-ACRF-1 Charcoal Filters Manual & Electric-heat B. CLOSED HEAD SPRINKLER TYPE WATER SYSTEMS LOCATION TYPE SYSTEM ACTUATION Auxiliary Bldg. Cask Handling Preaction Sprinkler Dry Pilot Area*

Auxiliary Bldg. Drumming Area* Preaction Sprinkler Dry Pilot Auxiliary Bldg. Elev. 587* & Preaction Sprinkler Dry Pilot 609* (Corridors, charging, safety Inj. pump rooms, laundry area)

Reactor Coolant Pumps (4) Preaction Sprinkler Manual

• Shared system with D. C.'OOK - UNIT 1.

D. C. COOK UNIT 2 3/4 7-41 Amendment No.

BASES 3/4.7.9 Cont.

The purpose of the charcoal filter fire suppression T/S is to account for detection and suppression of fires in the charcoal filters.

Manual operati'on of these systems is allowed because two-point heat detection with control room and local annunciation of trouble conditions is provided for the charcoal filters. The OPERABILITY of the fire suppression system protecting the charcoal filters is only required when there is charcoal in the filters. Actuation of spray water onto the charcoal filters requires both the manual opening of the system isolation valve and reaching the high temperature alarm setpoint for the automatic opening of the system deluge valve.

Because of the inaccessibility of the lower containment to personnel during operation due to ALARA radiation exposure concerns, the use of one or more CCTVs in the lower containment, to monitor for fire and smoke, is an acceptable substitute to an hourly fire watch, if the fire suppression system becomes inoperable.

3/4.7.10 FIRE RATED ASSEMBLIES The OPERABILITY of the fire barriers and barrier penetrations ensures that fire damage will be limited. These design features minimize the possibility of a single fire involving more than one fire

.,area prior to detection and extinguishment. The fire barriers, fire barrier penetrations for conduits, cable trays and piping, fire dampers, and fire doors are periodically inspected to verify their OPERABILITY.

The ventilation seals are seals around ventilation duct work penetrating fire barriers.

D. C. COOK UNIT 1 B 3/4 7-8 Amendment No.

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j O PLANT SYSTEMS

~c BASES other tasks (e.g., an operator on tour) provided that such personnel fulfilled the above stated requirements. As a minimum, each area affected by an isolated low pressure CO 2 system must be visited every twenty-five (25) to thirty-five '(35) minutes by the Roving Fire Watch Patrol. Such measures will provide the necessary level of fire protection while affording necessary provisions for personnel safety.

In the event that portions of the fire suppression systems are inoperable, alternate backup fire fighting equipment is required to be made available in the affected areas until the inoperable equipment is restored to service. When the inoperable fire-fighting equipment is intended for use as a backup means of fire suppression, a longer period of time is allowed to provide an alternate means of fire fighting than if the inoperable equipment is the primary means of fire suppression.

The surveillance requirements provide assurance that the minimum OPERABILITY requirements of the fire suppression systems are met. An allowance is made for ensuring a sufficient volume of Halon and CO in the storage tanks by verifying either the weight, level, or pressure ok the tanks.

In the event 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. The requirement for a twenty-four hour report to the Commission provides for prompt evaluation of the acceptability of the corrective measures to provide adequate fire suppression capability for the continued protection of the nuclear plant.

The purpose of the charcoal filter fire suppression T/S is to account for detection and suppression of fires in the charcoal filters. Manual operation of these systems is allowed because two-point heat detection with control room and local annunciation of trouble conditions is provided for the charcoal filters. The OPERABILITY of the fire suppression system protecting the charcoal filters is only required when there is charcoal in the filters.

Actuation of spray water onto the charcoal filters requires both the manual opening of the system isolation valve and reaching the high temperature alarm setpoint for the automatic opening of the system deluge valve.

Because of the inaccessibility of the lower containment to personnel during operation due to ALARA radiation exposure concerns, the use of one or more CCTVS in the lower containment to monitor for fire and smoke, is an acceptable substitute to a continuous fire watch, if the fire suppression system becomes inoperable.

3/4.7.10 FIRE RATED ASSEMBLIES The OPERABILITY of the fire barriers and barrier penetrations ensures that fire damage will be limited. These design features minimize the possibility of a single fire involving more than one fire area prior to detection and extinguishment. The fire barriers, fire barrier penetrations for conduits, cable trays and piping, fire dampers, and fire doors are periodically inspected to verify their OPERABILITY. The ventilation seals are seals around ventilation duct work penetrating fire barriers.

D. C. COOK UNIT 2 B 3/4 7-7 Amendment No.

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