ML20206P395
| ML20206P395 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 06/30/1986 |
| From: | ILLINOIS POWER CO. |
| To: | |
| Shared Package | |
| ML20206P385 | List: |
| References | |
| NUDOCS 8607020116 | |
| Download: ML20206P395 (2) | |
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W & REVIEW COPY 1
INSTRUMENTATION.
1 3/4.3.8 TURBINE OVERSPEED PROTECTION SYSTEM LIMITING CONDITION FOR OPERATION 3.3.8 At least one turbine overspeed protection system sh'all be OPERABLE.
APPLICABILITY: OPERATIONAL CONDITIONS 1 and 2.
ACTION:
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a, With the above required tu,rbine 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.
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P SURVEILLANCE REQUIREMENTS a
4.3.8.1 The provisions of Specification 4.0.4 are not applicable.
4.3.8.2 The above required turbine overspeed protection system shall be demonstrated OPERABLE:
g a.
At least once per 7 days by cycling each of the following valves from the running position and observing valve closure:
1.
Four high-presswe-ttsrtrine-contrcl valves,*
/.8 Four low pressure turbine combined intermediate valves, and
.2..E' Four high pressure turbine stop valves.
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C, d At least once per 18 months by performance of a CHt.HNEL CALIBRATION of the turbine overspeed protection instrumentaticn.
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At least..once per 40 months by disassembling at least one of each of the e
t-above valves and performing a visual and surface inspection of all valve
'sieats, disks and stems and verifying no unacceptable flaws or excessive L
corrosion.
If unacceptable flaws or excessive corrosion are found, all other valves of that type shall be inspected.
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8607020116 860630 PDR ADOCK 05000461 A
PDR CLINTON - UNIT 1 3/4 3-108 JUN 0 4.1995
PROOF & REYlEW COPY l
PLANT SYSTEMS 3/4.7.6 MAIN TURBINE BYPASS SYSTEM LIMITING CONDITION FOR OPERATION 3.7.6 The main turbine bypass system shall be OPERABLE.
-t APPLICABILITY:
OPERATIONAL CONDITION 1.
ACTION:
[i With the main turbine bypass system inoperable, restore the system to OPERABLE status within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> or reduce THERMAL POWER to less than 25% of RATED THERMAL POWER within the next 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
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SURVEILLANCE REQUIREMENTS 4.7.6 The main turbine bypass system shall be demonstrated OPERABLE:
a.
At least once pe ays by cycling each turbine-bypass valve through at least one complete cycle of full travel, and b.
At least once per 18 months by:
1.
Performing a system functional test which includes simulated auto-
.matic actuation and verifying that each automatic valve actuates to --
its correct position.
2.
Demonstrating TURBINE BYPASS SYSTEM RESPONSE TIME meets the following requirements when measured from the initial movement of the main turbi.,ne stop or control valve:
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a) 80% of turbine bypass system capacity shall be established in 5 0.3 seconds.
b)
Bypass valve opening shall start in 1 0.1 seconds.
1 CL'INTON - UNIT 1 3/4 7-16 JUN O4 1c.SS f
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