ML050750263

1) TS Page - Diablo Canyon, Correction to Page Issued in Amendment Nos 179 and 181, Respectively

ML050750263
Person / Time
Site:	Diablo Canyon
Issue date:	03/11/2005
From:	NRC/NRR/DLPM/LPD4
To:	Pacific Gas & Electric Co
Donohew J N, NRR/DLPM,415-1307
Shared Package
ML050740544	List: ML050750263
References
TAC MC2024, TAC MC2025
Download: ML050750263 (1)

Text

RTS Instrumentation 3.3.1 Table 3.3.1-1 (page 3 of 7)

Reactor Trip System Instrumentation APPLICABLE MODES OR L(a)

OTHER NOMINA SPECIFIED REQUIRED SURVEILLANCE ALLOWABLE TRIP FUNCTION CONDITIONS CHANNELS CONDITIONS REQUIREMENTS VALUE SETPOINT

10. ReactorCoolant 1(9) 3 per loop M SR 3.3.1.1 2 89.8% of 90% of Flow-Low SR 3.3.1.7 measured measured SR3.3.1.10 loop flow loop flow SR 3.3.1.16

11. Reactor Coolant 1(g) I perRCP N SR 3.3.1.14 NA NA Pump (RCP)

Breaker Position

12. Undervoltage 1(9) 2per bus M SR 3.3.1.9 Ž7877V 8050 V RCPs SR 3.3.1.10 each bus each bus SR 3.3.1.16

13. Underfrequency 1(g) 3 per bus M SR 3.3.1.9 Ž53.9 Hz 54.0 Hz RCPs SR 3.3.1.10 each bus each bus SR 3.3.1.16

14. a. Steam 1,2 3perSG E SR 3.3.1.1 214.8% 15.0%

Generator SR 3.3.1.7 (SG) Water SR 3.3.1.10 Level-Low SR 3.3.1.16 Low

b. SG Water 1,2 4 X SR 3.3.1.7 TTD

• 1.01 TTD

• TD Level - Low SR 3.3.1.10 TD (Note 3) (Note 3) for Low Trip Time for RCS loop RCS loop AT Delay (TTD) AT variable variable input input

• 50.7% 50% RTP RTP TTD=0 and TTD=0 for RCS loop for RCS loop AT variable AT variable input 50%

input > 50.7 RTP

% RTP

15. Not used (continued)

(a) A channel is OPERABLE with an actual Trip Setpoint value outside its calibration tolerance band provided the Trip Setpoint value is conservative with respect to Its associated Allowable Value and the channel is re-adjusted to within the established calibration tolerance band of the Nominal Trip Setpoint. A Trip Setpoint may be set more conservative than the Nominal Trip Setpoint as necessary in response to plant conditions.

(g) Above the P-7 (Low Power Reactor Trips Block) interlock.

DIABLO CANYON - UNITS I & 2 3.3-14 Unit I - Amendment No. 435 442464 478 179 8S9IDI12.DOC - R12 16 Unit 2 - Amendment No. 435 142 42480181