ML20033H252
| ML20033H252 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 04/10/1990 |
| From: | NRC |
| To: | |
| Shared Package | |
| ML20033H253 | List: |
| References | |
| NUDOCS 9004190037 | |
| Download: ML20033H252 (2) | |
Text
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INSTRUMENTATION-
' WASTE GAS HOLDUP SYSTEM' 1
EXPLOSIVE GAS MONITORING-INSTRUMENTATION t
LIMITING CONDITION FOR OPERATION 1
r 3.3.3.10 At least one' hydrogen and both the inlet and outlet oxygen explosive
-gas monitoring instrumentation channels for each WASTE GAS HOLDUP SYSTEM recombiner shall be OPERABLE with their Alarm / Trip Setpoints set to ensure that the.-limits of Specification 3.11.2.5 are not exceeded.
APPLICABILITY:
During: WASTE GAS HOLDUP SYSTEM ' operation.
ACTION:
a.
With an outlet oxygen monitor channel inoperable, operation of
-the system may continue provided grab samples are taken.and analyzed at.least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />'.:
. b.
With both oxygen or both' hydrogen channels or both the. inlet-oxygen and inlet hydrogen monitor channels ~for one recombiner-inoperable, suspend' oxygen supply to the recombiner. Addition of waste gas to the system may continue provided grab-samples are taken and analyzed at least.once.per 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> during degassing operations and at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> during other operations.
c.
The provisions of Specifications 3.0.3:and 3.0.4 are not. applicable.
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SURVEILLANCE REQUIREMENTS
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L 4.3.3.10 Each explosite gas monitoring instrumentation channel shall be demonstrated OPEMBLE by performance of:
U a.
'A-CHANNEL CHECK at least once per'24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, b.
An ANALOG CHANNEL OPERATIONAL TEST at least once per 31 days, and c.
A CHANNEL CALIBRATION at least once per 92 days with the use of i-standard gas samples containing a. nominal:
1)
One volume percent hydrogen,. balance nitrogen and four volume percent hydrogen, balance nitrogen for the hydrogen monitor, and 2)'
One volume percert oxygen, balance ~ nitrogen, and four volume -
percent oxygen, balance nitrogen.for the inlet oxygen monitor, and 3) 10 ppm by volume oxygen, balance nitrogen and 80 ppm by volume oxygen, balance nitrogen for the outlet oxygen monitor.
9004190037 900410 gDR ADOCK0500gp3 CALLAWAY - UNIT 1 3/4 3-75 Amendment No. 50 s
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INSTRUMENTATION i
3/4.3.4 TURBINE OVERSPEED PROTECTION LIMITING CONDITION FOR OPERATION 3.3.4 At least one Turbine Overspeed Protection System'shall' be OPERABLE.'
APPLICABILITY: MODES 1, 2*,.and 3*.
ACTION:
a.
With-one stop valve or one governor valve per high-. pressure turbine steam line inoperable and/or with one reheat stop valve or one-reheat' intercept valve per' low pressure turbine steam line inoperable.. restore the inoperable valve (s) to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or close at least one valve in,the-affected steam lines, or isolate the turbine from the steam supply within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
b.
. With the above required Turbine Overspeed Protection. System otherwise.
inoperable..within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> isolate the turbine from the steam supply.
SURVEILLANCE REQUIREMENTS 4.3.4.1 The provisions of Specification 4.0.4 are not< applicable.-
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4.3.4.2 The above' required Turbine Overspeed Protection System shall be maintained., calibrated.: tested..and inspected in accordance'with:the'Callaway Plant's Turbine Overspeed Protection Reliability Program. Adherence.to'this-program shall demonstrate OPERABILITY of-this system.
The program and any
. revisions should be reviewed and approved'in accordance with Specification 6.5.1.6o.
Revisions shall be made in accordance with the provisions of 10 CFR 50.59.
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- Not applicable'in MODE 2 or 3 with all main steam line isolation valves and associated bypass valves in the closed position and all other steam flow g'
paths.t-o the turbine isolated.
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CALLAWAY - UNIT 1 3/4 3-76 i