ML20078B985

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Forwards for review,marked-up Proposed Tech Specs Re Fire Detection Instrumentation & Containment Bldg Penetrations
ML20078B985
Person / Time
Site: Byron Constellation icon.png
Issue date: 09/23/1983
From: Bill Dean, Querio R
COMMONWEALTH EDISON CO.
To: Anderson F
NRC
References
BYRON-83-945, NUDOCS 8309270343
Download: ML20078B985 (12)
v • d • e


Text

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ON Commonwealth Edison

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) Byr:n Nuct :rSt; tion l

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'7 4450 North German Church Road i

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/ Byron, Illinois 61010

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J' September 23,1983 LTR:

BYRON 83-945 FILE:

2.1.301 Mr. Fred Anderson U. S. Nuclear Regulatory Commission Bethesda, Maryland 20014

Subject:

Proposed Technical Specifications - Byron Unit 1

Dear Mr. Anderson:

Enclosed here in are additional proposed Technical Specificaitons j

which are ready for technical review. The specific contents of this transmittal are itemized below.

Please address any further questions to Paul Dandrea, extension 205 or myself.

S!ncerley, t

WilliaA Dean (815) 234-5441, extension 763 Approved:

gs R. E. Querio Station Superintendent Byron lluclear Power Station WJD/PIID/bs

Enclosure:

Section 3/4.3.3.7 Fire Detection Instrumentation and Basis Section 3/4.4.3.3.7.1 Fire Detection Instrumentation Table 3.3-11 Section 3/4.9.4 Containment Building Penetrations j

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z INSTRUMENTATION 8ASES 3/4.3.3.7 FIRE DETECTION INSTRUMENTATION OPERA 8ILITY of the detection instrumentation ensures that both adequate warning capability is available for the prompt detection of fires and that Fire Suppression Systems, that are actuated by fire detectors, will discharge extinguishing agent in a timely manner. Prompt detection and suppression of fires will reduce the potential for damage to safety-related equipment and is an integral element in the overall facility fire protection program.

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Fire detectors th'at are used to actuate fire suppression systems represent a more critically important component of a plant's fire protection program than detectors that are installed solely for early fire warning and notification.

Consequently, the minimum number of operable fire detectors must be greater.

The loss of detection capability for Fire Suppression Systems, actuated by fire detectors represents a significant degradation of fire protection for any area. As a result, the establishment of a fire watch patrol must be initiated j

at an earlier stage than would be warrented for the loss of detectors that i

provide only early fire warning. The establishment of frequent fire patrols 4

il in the affected areas is required to provide detection capability until the 1

inoperable instrumentation is restored to OPERA 81LITY.

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  • kc oh. g ra a, 3/4.3.3.8 LOOSE-PART DETECTION INSTRUMENTATION l

The OPERA 8ILITY of the loose part detection instrumentation ensures that sufficient capability is available to detect loose metallic parts in the

'f Reactor System and avoid or mitigate damage to Reactor System components. The allowable out-of-service times and Surveillar. e Requirements are consistent I;

with,the recommendations of Regulatory Guide 1.133, " Loose-Part Detection Prr, gram for the Primary Systen of Light-Water-Cooled Reactors," May 1981.

3/4.3.3.9 RADI0 ACTIVE LIQUID EFFLUENT MONITORING INSTRUMENTATION The radioactive liquid effluent instrumentation is provided to monitor

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and control, as applicable, the releases of radioactive materials in liquid effluents during actual or potential releases of liquid effluents. The Alarm /

I Trip Setpoints for these instruments shall be calculated and adusted in i

accordance with the methodology and parameters in the 00CM to ensure that the alare/ trip will occur prior to exceeding the limits of 10 CFR Part 20. The OPERA 81LITY and use of t*-is instrumentation is consistent with the requirements of General Design Criteria 60, 63 and 64 o Appendix A to 10 CFR Part 50. The ourpose of tank level indicating devices is to assure the detection and control of leaks that if not controlled could potentially result in the transport of i

radio. active materials to UNRESTRICTED AREAS.

l BYRON - UNIT 1 8 3/4 3-5 l

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INSTRUMENTATION FIRE DETECTION INSTRUMENTATION LIMITING CONDITION FOR OPERATION 3.3.3.7 As a minimum, the fire detection instrumentation for each fire detection zone shown in Table 3.3-11 shall be OPERABLE.

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~ APPLICA8ILITY: Whenever equipment protected by the fire detection instrument is required to be OPERA 8LE.

ACTION:

With the number of OPERA 8LE fire detection instrument (s) less than the minimum number OPERA 8LE requirement of Table 3.3-11:

a.

With any, but not more than one-half the total in any fire zone, t

Jemre$evre fire detection instruments shown in Table 3.3-11 inoperable,

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restore the inoperable instrument (s) to OPERA 8LE status within 14 l

days. or within the next 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> establish a fire watch patrol to inspect the zone (s) with the inoperable instrument (s) at least once per

'l hour, unless the instrument (s) is located inside the containment, then inspect that containment zone at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or monitor the containment air temperature at least once per hour at

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the locations listed in Specification 4.6.1.5.

b.

With more than one-half of the Function A fire detection instruments in any fire zone shown in Table 3.3-11 inoperable or with any fraff'f fir'.2 2 i. Instruments shown in Table 3.3-11, gaf inoperable, of with any two or more adjacent fire detection instruments shown in Table 3.3-11 inoperable, within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> establish a fire j

watch patrol to inspect the zone (s) with the inoperable instrument (s)

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at least onca per hour, unless the instrument (s) is located inside

'l the containment, then inspect that containment zone at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or monitor the containment air temperature at least once per hour at the locations listed in Specification 4.6.1.5.

c.

The provisions of Specifications 3.0.3 and 3.0.4 are not applicable.

SURVEILLANCE REQUIREMENTS 4.3.3.7.1 Each of the above required fire detection instruments which are accessible during plant operation shall be demonstrated OPERABLE at least once per 6 months by performance of a TRIP ACTUATING DEVICE OPERATIONAL TEST.

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detectors which are not accessible during plant operation shall be demonstrated i

OPERA 8LE by the performance of a TRIP ACTUATING DEVICE OPERATIONAL TEST during each COLD SHUTDOWN exceeding 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> unless performed in the previous 6 months.

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I INSTRUMENTATION SURVEILLANCE PEQUIREMENTS (Continued) 4.3.3.7.2 The NFPA Standard 720 supervised circuits supervision associated with the detector alarms of each of the above required fire detection instruments shall be demonstrated OPERABLE at least'once per 6 months.

4.3.3.7.3 The nonsupervised circuits, associated with detector alarms, between the instrument and the control room shall be demonstrated OPERABLE at least once per 31 days.

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TABLE 3.3-11 (Continued)

FIRE DETECTION INSTRUMENTS Instrument Location Instrument Type

  • Total # of Instruments Heat Flame Smoke
6. Station Battery Room Zone 67 Elev 451 Detection 3

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Zone 38 Elev 401 Suppression 4

8. Diesel Fuel Storage

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Zone 39 Elev 401 Suppression 1

Zone 40 Elev 401 Suppression 1

Zone 27 Elev 383 Suppression 3

Zor:e 28 Elev 383 Suppression 3

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9. Safety Related Pumps

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Zone 41 Elev 383 Suppression 2

Zone 42 Elev 383 Suppression 1

Zone 16 Elev 364 Detection 2

Zone 18 Elev 364 Detection 3

Zone 19 Elev 364 Detection 3

Zone 20 Elev 346 Detection 3

Zone 21 Elev 346 Detection 3

Zone 52 RSH Suppression 6

10. Fuel Storage l

Zone 39 Elev 401 Detection 3

Zone 38 Elev 426 Detection 3

i Notes

  • A single detector in a zone marked " DETECTION" will alarm in the Main Control Room.

A single detector in a zone marked " SUPPRESSION" will initiate suppression and alarm

'I in the Main Control Room.

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    • These are Containment Ventilation tentperature switches. Upon receipt of a Hi-Hi temperature suppression must be manually initiated.
      • The fire detection instruments located within the containment are not required to be OPERABLE during the performance of TYPE A containment leakage rate tests.

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TABLE 3.3-11 FIRE DETECTION INSTRUMENTS Instrument Location Instrument Type

  • Total # of Instruments Heat Flame Smoke
1. Containment "*

Zone 11 Elev 426 Suppression 1**

Zone 12 Elev 426 Suppression 1"

Zone 2 Elev 401 Detection 2

Zone 3 Elev 401 Detection 2

Zone 4 Elev 401 Detection 2

Zone 5 Elev 401 Detection 2

Zone 6 Elev 426 Detection 6

Zone 76 Elev 426 Detection 9

Zone 7 Elev 414 Detection 6

Zone 24 Elev 414 Detection 10 1

2. Control Room Zone 68 Elev 451 Detection 3

Zone 69 Elev 451 Detection 8

Zone 75 Elev 451 Detection 10 l

3. Switchgear Rooms i

I Zone 77 Elev 426 Detection 9

Zone 78 Elev 426 Detection 9

4. Upper Cable Spreading Room Zone 33 Elev 463 Suppression 4

Zone 34 Elev 463 Ouopression 8

Zone 35 Elev 463 1:;;pressien 8

Zone 36 Elev 463 Suppression 4

Lower Cable Spreading Room l

Zone 43 Elev 439 Suppression 8

Zone 44 Elev 439 Suppression 10 l

Zone 45 Elev 439 Suppression 8

Zone 46 Elev 439 Suppression 4

5. Remote Shutdown Panel Zone 13 Elev 383 Detection 5

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REFUELING OPERATIONS 3/4.9.4 CONTAINMENT BUILDING PENETRATIONS LIMITING CONDITION FOR OPERATION

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Each penetration providing direct access from the containment

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atmosphere to the outside atmosphere shall be either:

i 1.

Closed by an isolation valve, blind flange, or manual valve, or l

l 2.

Be capable of being closed by an OPERABLE automatic containment i

t purge isolation valve.

APPLICABILITY: During CORE ALTERATIONS or movement of irradiated fuel within l

the containment.

i-i ACTION:

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-4 With the requirements of the above specification not satisfied, immediately i

j suspend all operations involving CORE ALTERATIONS or movement of irradiated 1-fuel in the containment building.

SURVEILLANCE REQUIREMENTS 9

._ j 4.9.4 Each of the above required containment building penetrations shall be -

J determined to be either in its closed / isolated condition or capable of being closed by an OPERABLE automatic containment purge isolatica valve within i

100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> prior to the start of and at least once per 7 days during CORE ALTERATIONS or movenant of irradiated fuel in the containment building by:

a.

Verifying the penetrations are in their closed / isolated condition, l

or '

b.

Testing the contairiment purge isolation valves per the applicable j

portions of Specification 4.6.3.2.

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