ML20039E023

Proposed Change 99 to Tech Specs Tables 3.2.6 & 4.2.6 Providing Limiting Conditions for Operation & Surveillance Requirements to Reflect Installation of high-range Noble Gas Effluent Monitor

ML20039E023
Person / Time
Site:	Vermont Yankee
Issue date:	12/29/1981
From:	VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20039E020	List: ML20039E019 ML20039E023
References
NUDOCS 8201060440
Download: ML20039E023 (3)

Text

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VYNPS TABLE 3.2.6 POST-ACCIDENT INSTRUMENTATION Minimum Number of Operable Instrument Instrument Channels Parameter Type of Indication Range "O

b 2 Drywell Atmospheric Temperature Recorder #16-19-45 0-3000F r (Note 1) Recorder #TR-1-149 0-300JF

>O So 2 Drywell Pressure (Note 1) Recorder #16--19-44 0-80 psia y$ Torus Pre ssure (Note 1) 0-80 psia o

08 2 Torus Water Level (Note 3) Meter #16-19-46A 0-3 ft.

.8 Meter #16-19-46B 0-3 f t .

,$g! 2 Torus Water Temperature Meter #16-19-48 60-1800F e44 -

"" Recorder #6-97 0-1200 psig 2 Reactor Pressure (Note 1)

Meter #6-90A 0-1200 psig Meter #6-90B 0-1200 psig 2 Reactor Vessel Water Level Meter #2-3-91A (-150)-0-(+150)"H 2O (Note 1) Meter #2-3-91B (-150)-0-(+150)"H 2O 1 Control Rod Position (Note 1, 2) Meter 0-48" RPIS 1 Neutron Monitor (Note 1,2) Meter 0-125% Rated Flux 1 Torus Air Temperature (Note 1) Recorder #TR-16-19-45 0-3000F 2 / valve Saf ety/ Relief Valve Position Lights (SRV 2-17-A - D) Closed - Open from pressure switches (Note 4) 1/va lve Saf ety Valve Position f rom Meter 21-2-1A/B Closed - Open Acoustic Monitor (Note 5) 1 Stack Nobic Cas Effluent (Note 6) Meter RM #17-155 0.1 - 10 mr/hr 7

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VYNPS S

TABLE 3.2.6 NOTES Note 1 - From and af ter the date that one of these parameters is not indicated in the control room, continued reactor operation is permissible during the next seven days. If reduced to one indication of a parmaeter operation is permissible for 30 days.

%te 2 - Control rod position and neutron monitor instruments are considered to be redundant to each other.

Note 3 - From and af ter the date that this parameter is reduced to one indication is the control room, continued reactor operation is permissible during the next thirty days. If both channels are inoperable and indication cannot be restored in. six hours, an orderly shutdown shall be initiated and the reactor shall be in a hot shutdown condition in six hours and a cold shutdown condition in the following 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br />.

Note 4 - From and af ter the data that safety / relief valve position f rom pressure switches is unavailable, reac t or operation may continue provided safety / relief valve position can be determined f rom recorder 2-166 (thermocouple -

0-6000F) and meter 16-19-48 (torus water temperature, 60-1800F). If both indications are not_available, the reactor shall be in a hot shutdown condition in six hours and a cold shutdown condition in the following 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br />.

Hote 5 - From and after the date that safety valve position f rom the acoustic monitor is unavailable, reactor operation may continue provided safety valve position can be determined from records 2-166 (thermocouple 0-6000F) and recorder 16-19-44 (d rywell pressure 0-80 psia) . If both indications are not available, the reactor will be in a hot shutdown condition in six hours and in a cold shutdown condition in the following 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br />.

Note 6 - From and after the date that this parameter is unavailable by control room indication and cannot be restored within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, continued reactor operation is permissible for the next 30 days provided that local sampling capability is available. If the control room indication cannot be restored within 30 days, the reactor shall be in hot shutdown within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in cold shutdown within the subsequent 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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VYNPS i

TABLE 4.2.6 s

CALIBRATION FREQUENCIES POSi'-ACCIDENT INSTRUMENTATION Parameter Calibration Instrument Check Drywell Atomosphere Temperature every 6 months once each day Drywell and Torus Pressure every 6 months once each day To ru s Wa te r Leve l every 6 months once each shift Torus Water Temperature every 6 months once each day Reactor Pressure every 6 months once each day Reactor Vessel Water Level every 6 months once each day Control Rod Position (Note 5) once each day Neutron Monitor Same as reactor once each day protection systems Torus Air Temperature every 6 months once each day Safety / Relief Valve Position every refueling out. age (Note 9) once each day (a Functional Test to be performed quarterly)

Safety Valve Position every refueling outage (Note 9) once each day (a Functional Test to be performed quarterly)

Seack Noble Gas Ef fluent every operating cycle once each day (a Functional Test to be Performed quarterly) 60