ML17332A236
| ML17332A236 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 07/26/1994 |
| From: | INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | |
| Shared Package | |
| ML17332A235 | List: |
| References | |
| NUDOCS 9408020121 | |
| Download: ML17332A236 (10) | |
Text
ATTACHMENT 2 TO AEP:NRC:0692CY EXISTING TECHNICAL SPECIFICATION PAGES MARKED TO REFLECT PROPOSED CHANGES 8~~
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EASES (Continued) radiation levels and the expected time to perform a visual inspection in each snubber location as well as other factors associated with accessibility during plant operations (e. g., temperature, atmosphere, loc'ation, etc. ), and recommendations of Regulatory Guides 8.8 and 8.10. The addition or deletion of any snubber shall be made in accordance with Section 50.59 of 10 CFR Part 50.
3 4.7.9 FIRE SUPPRESSION SYSTEMS The OPERABILITY of the fire suppression systems ensures that adequate fire suppression capability i.s available to confine and extinguish fires occurring in any portion of the facility where safety related equipment is located.
The fire suppression systems consist of the water system, spray and/or sprinklers, C02, Halon 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.
In the event that one or more CO2 suppression systems requiring automatic actuation must be isolated for personal protection to permit entry for routine tours, maintenance, constructi.on, or surveillance thsting in the protected area, the fire detection system(s) required to be OPERABLE by Specification 3.3.3.7 shall be verified to be OPERABLE. Isolation of an automatic CO suppression system temporarily puts this system in a manual actuation moke.
Reliance on the fire detection system, in conjunction with the ability to manually discharge the C02 suppression system will provide adequate fire protection for periods when personnel are required to work in these areas.
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. Backup fire protection equipment will normally take the form of permanently mounted fire extinguishers and/or fire hose stations in or near the area, or fire hoses routed to the affected area nteeen e are water ta s become inop ra e, Lake Mx agan may serve their bac . Two manual diesel-engine riven, vertic -turbine fire p ps rated a 2000 gpm, whi take suction ff of Lake Mi igan and pro 4e water to e fire suppre sion header, a administrati ely co rolled. On of these pumps may serve as a ackup to one f the fire s res s that take s t o ff of th tanks. However, it is not our ntent to rely on backup systems or other compensatory measures for an extended period of time and action will be taken to restore the inoperable portions of the fire suppression system to OPERABLE status within a reasonable period.
COOK NUCLEAR PLANT. - UNIT 1 B 3/4 7-7 AMENDMENT NO. 48, ~, ~ ]7o
BASES 3 4.4,7 9 Continued The surveillance requirements provide assurance that the minimum OPERABILITY requirements of the fire suppression systems are met. While performing the surveillances specified in 4.7.9.1 the fire suppression water system is still capable of performing its intended function. Consequently, it is not necessary to enter the ACTION STATEMENT specified in 3.7.9.1 while the SURVEILEANCES specified in 4.7.9.1.1 are being performed, unless the tested equipment fails the SURVEILLANCE. In addition, an allowance is made for ensuring a sufficient volume of Halon and COz in the Halon and CO@ storage tanks by ve ifying either the weight, level, or pressure of the tanks.
The fire suppressio'n water system has three fire pumps common to both units which discharge into underground ring headers. There is one motor-driven horizontal centrifugal fire pump rated at 2500 gpm that takes suction from the fire water storage tanks; and two diesel-engine-driven horizontal centrifugal fire pumps rated at 2500 gpm that take suction from the fire water storage tanks. Having a combination of diesel-driven and electric motor-driven pumps in the system design is consistent with NRC Branch Technical Position APSCB 9.5-1.
The flow pa s capable of taki suction from La 1
Michigan are no ally isolated preclude zebra sel infestation o the system.
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 ALAt8A 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.
All hourly fire watch patrols are performed at intervals of sixty minutes with a margin of fifteen minutes.
A continuous fire watch requires that a trained individual be in the specified area at all times and that each fire zone within the specified area be patrolled at least once every fifteen minutes with a margin of five minutes.
COOK NUCLEAR PLANT - UNIT 1 B 3/4 7-8 AMENDMENT NO
PLANT SYSTEMS BASES 3 4.7.9 Continued 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-fightiag equipment is intended for use as a backup meaas of fire suppression, a longer period of time is allowed to provide an alternate means of fire fighting thaa if the inoperable equipment is the primary means of fire suppression. Backup fire protection equipment vill normally take the form of permanently mounted fire extinguishers and/or fire hose stations in or near the area, or fire hos outed to the affected area.
In the event t t t e fire vate tanks become operable, e Hichigan serve as the backup. Tvo ual, diesel-e gine driven, ertical-turb e fire pumps ted at 2000 gpm vhich take s tion off of ke Echigan d provide w er to the fire ppression hea r, are admin stratively co tzolled.
One of t ese pumps may se e as a backu to one of the fire su ress on um s that t e suction off of the tanks. Ho ever, it is not our intent to rely'n backup systems or other compensatory measures for an extended period of time and action vill be taken to restore the inoperable portions of the fire suppxession system to OPERABLE status vithin a reasonable pexiod.
The suzveillance requirements provide assurance that the minimum OPERABILITY requirements of the fire suppression systems axe met. While performing the surveillances specified in 4.7.9.1.1 the fire suppression vater system is still capable of performing its intended function. Consequently, necessary to enter the ACTION STATEIKNT specified in 3.7.9.1 vhile the it is not SURVEILLANCES specified ia 4.7.9.1.1 are being performed, unless the tested equipment fails the SURVEILLANCE. In addition, an allowance is made for ensuring a sufficient volume of Halon and COZ in the Halon and C02 storage tanks by verifying either the weight, level, or pressure of the tanks.
The fire suppression vater system has three fire pumps common to both units which dischazge into underground xing headers. There is one motor-driven horizontal centrifugal fire pump rated at 2500 gpm that takes suction from the fire vater storage tanks; and tvo diesel-engine-driven horizontal centrifugal fire pumps rated at 2500 gpm that take suction from the fixe water storage tanks. Having a combination of diesel-driven aad electric-motor-driven pumps in the system design is consistent vith NRC Branch Technical Position APSCB 9.5-1.
The flow pat capable of tak suction from La Michigan axe no ally isolated t preclude zebra sel infestation o the s stem.
COOK NUCLEAR PLANT - UNIT 2 B 3/4 7-7 AMENDMENT NO. 64, j 5-'
ATTACHMENT 3 TO AEP:NRC:0692CY PROPOSED REVISED TECHNICAL SPECIFICATION PAGES
BASES (Continued) radiation levels and the expected time to perform a visual inspection in each snubber location as well as other factors associated with accessibility during plant operations (e.g., temperature, atmosphere, location, etc.), and recommendations of Regulatory Guides 8.8 and 8.10. The addition or deletion of any snubber shall be made in accordance with Section 50.59 of 10 CFR Part 50.
3 4.7.9 FIRE SUPPRESSION SYSTEMS The OPERABILITY of the fire suppression systems ensures that adequate fire suppression capabi.lity is available to confine and extinguish fires occurring in any portion of the facility where safety related equipment i.s located.
The fire suppression system consists of the water system, spray and/or sprinklersi CO i Halon and fire hose stations. The collecti.ve capability of the fire suppkeaaion systems is adequate to minimize potential damage to safety-related equipment and is a major element in the facility fire protection program.
In the event that one or more CO Suppression Syst: em requiring automatic actuation must be isolated for personal protection to permit entry for routine tours, maintenance, construction, or surveillance testing i.n the protected area, the fi.re detection system(s) required to be operable by Specification 3.3.3.7 shall be verified to be operable. Isolati.on of an automati.c CO suppression system temporarily puts this system in a manual actuation mode.
Reliance on the fire detection system, in conjunction wi.th the abi.lity to manually discharge the CO suppression system wi.ll provide adequate fire protection for periods when personnel are required to work in these areas.
In the event that portions of the fire suppression systems are inoperablei alternate backup fire fighting equipment is required to be made avai.lable in the affected areas until the inoperable equipment is restored to service.
When the inoperable fire fighting equi.pment is intended for use a backup means of fire suppression, a longer period of time is allowed to provide an alternate means of fire fighting than primary means of fire suppression.
if the i.noperable equipment is the Backup fire protection equipment will normally take the form of permanently mounted fire extinguishers and/or fire hose stations in or near the area, or fire hoses routed to the affected area.
However, it is not our i.ntent to rely on backup systems or other compensatory measures for an extended period of time and action will be taken to restore the inoperable portions of the fire suppression system to OPERABLE status within a reasonable period.
COOK NUCLEAR PLANT UNIT 1 B 3/4 7-7 AMENDMENT NO 68i 480f +Vkl
BASES 3 4.7.9 Continued The surveillance requirements provide assurance that the minimum OPERABILITY requirements of the fire suppression systems are met. While performing the surveillances specified in 4.7.9.1 the fire suppression water system is still capable of performing its intended function. Consequently, it is not necessary to enter the ACTION STATEMENT specified in 3.7.9.1 while the SURVEILLANCES SPECIFIED IN 4.7.9.1.1 are being performed, unless the tested equipment fails the SURVEILLANCE. In addition, an allowance is made for ensuring a sufficient volume of Halon and CO~ in the Halon and CO~ storage tanks by verifying either the weight, level, or pressure of the tanks.
The fire suppression water system has three fire pumps common to both units which discharge into underground ring headers. There is one motor-driven horizontal centrifugal fire pump rated at 2500 gpm that takes suction from the fire water storage tanks; and two diesel-engine-driven horizontal centrifugal fire pumps rated at 2500 gpm that take suction from the fire water storage tanks. Having a combination of diesel-driven and electric motor-driven pumps in the system design is consistent with NRC Branch Technical Position APSCB 9.5-1.
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 an hourly fire watch, if the fire suppression system
~
becomes inoperable.
All hourly fire watch patrols are performed at intervals of sixty minutes with a margin of fifteen minutes.
A continuous fire watch requires that a trained individual be in the specified area at all times and that each fire zone within the specified area be patrolled at least once every fifteen minutes with a margin of five minutes.
COOK NUCLEAR PLANT UNIT 1 B 3/4 7-8 AMENDMENT NO. +38, 43+~ +VAN,
PLANT SYSTEMS BASES 3 4.7.9 Continued 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 effected 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. Backup fire protection equipment will normally take the form of permanently mounted fire extinguishers and/or fire hose stations in or near the area, or fire hoses routed to the affected area.
However, it is not our intent to rely on backup systems or other compensatory measures for an extended period of time and action will be taken to restore the inoperable portions of the fire suppression system to OPERABLE status within a reasonable period.
The surveillance requirements provide assurance that the minimum OPERABILITY requirements of the fire suppression systems are met. While performing the surveillances specified in 4.7.9.1.1 the fire suppression water system is still capable of performing its intended function. Consequently, necessary to enter the ACTION STATEMENT specified in 3.7.9.1 while the it is not SURVEILLANCES specified in 4.7.9.1.1 are being performed, unless the tested equipment fails the SURVEILLANCE. In addition, an allowance is made for ensuring a sufficient volume of Halon and CO~ in the Halon and CO~ storage tanks by verifying either the weight, level, or pressure of the tanks.
The fire suppression water system has three fire pumps common to both units which discharge into underground ring headers. There is one motor-driven horizontal centrifugal fire pump rated at 2500 gpm that takes suction from the fire water storage tanks; and two diesel-engine-driven horizontal centrifugal fire pumps rated at 2500 gpm that take suction from the fire water storage tanks. Having a combination of diesel-driven and electric-motor-driven pumps in the system design is consistent with NRC Branch Technical Position APSCB 9.5-1.
COOK NUCLEAR PLANT UNIT 2 B 3/4 7-7 AMENDMENT NO. Ski 44&g k%6 484