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

/

Millstono Nuclear Power Station, Unit No. 3

,4 Proposed Revision to Technical Specifications I

Degraded Grid Trip Setpoint Change Marked Up Page P

\\

June 1994

)

9407060223 940630 PDR ADOCK 05000423 P

PDR

~

s41LLI14 h 3:

jf TABLE 3.3-4 (Continuedj.

i 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 a s 8 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 N.A.

N.A.

N.A.

N.A.

N.A.

y Sequencer 7

~

Q

, ed

Docket No. 50-423 B14875

\\

f

/

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 TOTAL ERROR i

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 l

a.

Pressurizer Pressure, P-ll N.A.

N.A.

N.A.

s 1985 psig 1 1995 psig l

$g b.

Low-Low T,yg, P-12 N.A.

N.A.

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.

Seluencer y

?*

-3

.