ML17289A838

Proposed TS 3/4.3.7.6 Re Operability of Source Range Monitor Channels

ML17289A838
Person / Time
Site:	Columbia
Issue date:	09/02/1992
From:	WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:
Shared Package
ML17289A837	List: ML17289A836 ML17289A838
References
NUDOCS 9209140108
Download: ML17289A838 (2)

Text

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IQCTRUMENTATION SOURCE RANGE MONITORS LIMITING CONDITION FOR OPERATION 3.3.7.6 At least the following source range monitor channels shall be OPERABLE:

a. In OPERATIONAL CONDITION 2", three.

b. In OPERATIONAL CONDITIONS 3 and 4, two.

APPLICABILITY: OPERATIONAL CONDITIONS 2", 3, and 4.

ACTION:

ao In OPERATIONAL CONDITION 2" with one of the above required source range monitor channels inoperable, restore at least 3 source range monitor channels to OPERABLE status within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

b. In OPERATIONAL CONDITION 3 or 4 with one or more of the above required source range monitor channels inoperable, verify all insertable control rods to be inserted in the core and lock the reactor mode switch in the Shutdown position within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

SURVEILLANCE RE UIREMENTS 4.3.7.6 Each of the above required source range monitor channels shall be demonstrated OPERABLE by:

a. Performance of'a:

1. CHANNEL CHECK at, least once per:

a) 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> in CONDITION 2", and b) 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> in CONDITION 3 or 4.

2. CHANNEL CALIBRATION"" at least once per 18 months.

b. Performance of a CHANNEL FUNCTIONAL TEST:

1. Within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to moving the reactor mode switch from the Shutdown position, if not performed within the previous 7 days, and

2. At least once per 31 days.

c. Verifying, prior to withdrawal of control rods, that the SRM count rate is at least Q~ cps¹ with the detector fully inserted.

Qa'7 With IRM s on range 2 or below.

""Neutron detectors may be excluded from CHANNEL CALIBRATION.

¹Provided signal-to"noise ratio is >+ Otherwise,>3 cps T,io~:LJ, ~tg~*l- 4 ~ <>i<<

NO WASHINGTON NUCLEAR - UNIT 2 3/4 3-76 9209140i08 920902 0S000397 PDR ADOCV, P PDR

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