ML021210034

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Tech Spec Pages Amendment No. 175 Main Steam Isolation Valve Isolation Times, Dated April 25, 2002
ML021210034
Person / Time
Site: Columbia Energy Northwest icon.png
Issue date: 04/25/2002
From:
NRC/NRR/DLPM
To:
References
TAC MB4648
Download: ML021210034 (1)


Text

PCIVs 3.6.1.3 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.6.1.3.6 Verify the isolation time of each MSIV is In accordance

> 3 seconds and < 5 seconds.'

with the Inservice Testing Program SR 3.6.1.3.7 SR 3.6.1.3.8 SR 3.6.1.3.9 Verify each automatic PCIV actuates to the isolation position on an actual or simulated isolation signal.

Verify a representative sample of reactor instrument line EFCVs actuate to the isolation position on an actual or simulated instrument line break signal.

Remove and test the explosive squib from each shear isolation valve of the TIP System.

SR 3.6.1.3.10 Verify the combined leakage rate for all secondary containment bypass leakage paths is < 0.74 scfh when pressurized to

> P,.

24 months 24 months I

24 months on a STAGGERED TEST BASIS In accordance with the Primary Containment Leakage Rate Testing Program (continued)

!The isolation time of each MSIV includes circuit response time and valve motion time.

In addition, the fastest isolation times (excluding circuit response times) of the four main steam lines, when averaged together, shall be > 3 seconds.

This modification of SR 3.6.1.3.6 is effective until startup from refueling outage R-16 or startup from a forced outage of sufficient duration (> 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />) to perform testing to comply with SR 3.6.1.3.6 whichever occurs first.

Columbia Generating Station Amendment No.

149,i69,170,175 I

3.6.1.3-8