ML20073S799

Proposed TS Table 3.3-4, ESFAS Instrumentation Trip Setpoints

ML20073S799
Person / Time
Site:	Millstone
Issue date:	06/30/1994
From:	NORTHEAST NUCLEAR ENERGY CO.
To:
Shared Package
ML20073S795	List: B14875, Application for Amend to License NPF-49,modifying TS Table 3.3-4, ESFAS Instrumentation Trip Setpoints by Revising Trip Setpoint for 4 Kv Bus Undervoltage Relay for Grid Degraded Voltage ML20073S799
References
NUDOCS 9407060223
Download: ML20073S799 (4)

Text

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- Docket No. 50-423 B14875 1

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Attachment 1 Millstono Nuclear Power Station, Unit No. 3 ,4 Proposed Revision to Technical Specifications I

Degraded Grid Trip Setpoint Change Marked Up Page P

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June 1994

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9407060223 940630 PDR ADOCK 05000423 P PDR

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s41LLI14

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• i jf TABLE 3.3-4 (Continuedj. - -

do ' ENGINEERED SAFETY FEATURES ACTUATION SYSTEN INSTRUNENTATION TRIP SETPOINTS m

,. SENSOR

'c TOTAL ERROR

$ FUNCTIONAL _ TIN _Il ALLOWANCE fTA) I fS1 TRIP SETPOINT ALLOWABLE VALUE

8. Loss of Power l l

a. 4 kV %s Undervoltage N.A. N.A. N.A. 2 2800 2 2720 volts

(tc s of Voltage) volts with with a 1 2 a 5 2 second secor..i time t ' delay.

b. 4 kV Bus Undervoltage N.A. N.A. N. A. , - e volts 2 3706 volts (Grid Degraded Voltage) w'th ; as8 with a 5 8 A

• second time second time delay with ESF k delay with ESF actuation or actuation or 8 s 300 second 5 300 second time delay time delay without ESF without ESF I actuation. actuation.

9. Engineered Safety Features Actuation System Interlocks'

[ a. Pressurizer Pressure, P-11 N.A. N.A. N.A. s 1985 psig $ 1995 psig f b. - Low-Low T,yg, P-12 N.A. N.A. M.A. 2 553*F p ~4?.6*F

[ c. Reactor Trip, P-4 N.A. N.A. N.A. N.A. N.A.

'$ 10. Emergency Generator Load Sequencer N.A. N.A. N.A. N.A. N.A.

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Docket No. 50-423 B14875

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Attachment 2 Minstone Nuclear Power Statiot , Unit No. 3

' Proposed Revision to Tor:3nical Specifications Degraded Grid Trip Setpoint Change Retyped Page June 1994 l

1 8-f TABLE 3.3-4 (Continued) k a r- '

ENGINEERED SAFETY FEATURES ACTUATION SYSTEM INSTRUMENTATION TRIP SETPOINTS E SENSOR  ;

i TOTAL ERROR g FUNCTIONAL UNil -ALLOWAN Q !TA) 1 (S) TRIP SETPOINT M10MBLE VALLE

[ 8. Loss of Power  !

a. 4 kV Bus Undervoltage N.A. N.A. N.A. 2 2800 2 2720 volts '

(Loss of Voltage) volts with with a 5 2 a 1 2 second second time time delay. delay.  !

b. 4 kV Bus Undervoltage N.A. N.A. N.A. 2 3730 volts 2 3706 volts l ,

(Grid Degraded Voltage) with a S 8 with a s 8 second time second time .

{ delay with ESF del y with ESF actuation or ao sation or Y < 300 second < 300 second .

$ ilmedelay Timedelay withou.t ESF without EST actuation. actuation.

9. Engineered Safety Features j Actuation System Interlocks

a. Pressurizer Pressure, P-ll N.A. N.A. N.A. s 1985 psig 1 1995 psig l

$ b. N.A. N.A.

g Low-Low T,yg, P-12 N.A. 1 E53*F 2 549.6*F B

% c. Reactor Trip, P-4 N.A. .N.A. N.A. N.A. N.A.

f 10. Emergency Generator 1oad N.A. N.A. 'N.A. -N.A. N.A.

y Seluencer

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