ML20149E887

Proposed Tech Specs,Modifying Tables 3.3-2,3.3-3 & 4.3-2 to Require 18-month Functional Test of First Level Undervoltage Protection for Each of Three 480-volt Emergency Buses

ML20149E887
Person / Time
Site:	Yankee Rowe
Issue date:	01/05/1988
From:	YANKEE ATOMIC ELECTRIC CO.
To:
Shared Package
ML20149E882	List: ML20149E877 ML20149E887
References
NUDOCS 8801140039
Download: ML20149E887 (4)

Text

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TABLE 3.3-2 (CONTINUED)

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ENGINEERING S gEGUARDS SYSTEM INSTRUMENTATION en S-TOTAL NUFBER CHANNELS MINIMUM CHANNELS OF CHANNELS AND SENSORS AND SENSORS

. APPLICABLE

.. :o

' FUNCTIONAL UNIT AND SENSCRS-TO TRIP OPERABLE MODES ACTION E

i 2.

CONTAINMENT ISOLATION (Continued) c.

Actuation Channel B 1

1 1

1,2,3,4,5(1) 10 (1) High Containment 1

1 1

1,2,3,4,5(1) 10 Pressure Sensor (2) Safety Injection (All Safety Injection Initiating Functions and Requirements)

[

v

\\

D 3.

MAIN STEAM ISOLATION v

.L a.

Low Steam Line Pressure 3/ Steam Line 2/ Steam Line 3/ Steam Line 1, 2, 3(2) 6**

b..

Automatic Trip Logic 2

1 2

1, 2, 3(2) 8 i

c.

Manual Initiation 2

1 2

1, 2 8

d.

High Containment 2

1 2

1, 2 8

Pressure 3

Trip Containment Isolation S

4.

LOSS OF POWER 4

8.

480 VOLT EMERGENCY BUS 2

.' S a.

Loss of Voltage (First Level) 1/ Bus 1/ Bus 1/ Bus 1, 2, 3 23 b.

Degraded Voltage (Second Level) 2/ Bus 2/ Bus 2/ Bus 1, 2, 3.

22**

i b 8801140039 880105 W

PDR ADOCK 05000029 P

PDR n

ACTION STATEMENTS (continued) 23.

With the number of OPERABLE channels or sensors one less than the total number of channels or sensors, restore the inoperable bus to operable status within eight hours or be in at least HOT STANDBY within the next six hours and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

l l

YANKEE R0WE 3/4 3-13A Amendment No.

i' TABLE 3.3-3 (Continued)

ENGINEERED SAFECUARDS SYSTEM INSTRUMENTATION TRIP SETPOINTS FUNCTIONAL UNIT TRIP SETPOINT 4.

LOSS OF POWER 480 Volt Emergency Bus (a) Loss of Voltage (First Level) 1.8 1 0.20 seconds after Emergency Bus No. 1, 2, 3 voltage drops to ZERO volts from >420 volts 3.0 0.33 seconds after

'Ioltage decreases to 276 volts (b) Degraded Voltage (Second Level) 1.

480 V Bus 4-1, Bus 5-2, Bus 6-3 429 4.5 Volts Time Delay 10 il Seconds 2.

480 V Emergency Bus No. 1, Emergency 421 1 5 Volts 4

Bus No. 2, Emergency Bus No. 3 Time Delay 10 il Seconds i

i i.

l l

YANKEE R0WE 3/4 3-14A Amendment No.JP6

.1

s TABLE 4.3-2 (CONTINUED)

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Y ENGINEERED SAFEGUARDS SYSTEM INSTRUMENTATION 5-SURVEILLANCE REQUIREMENTS U

CHANNEL MODES IN MIICII

n E

CIIANNEL CHANNEL FUNCTIONAL SURVEILLANCE FUNCTIONAL UNIT CIIECK CALIBRATION TEST REQUIRED 2.

CONTAINMENT ISOLATION (Continued) c.

Actuation Channel B S

NA M(4) 1, 2, 3, 4, 5*

(1) liigh Containment S

R(3)

M(3) 1, 2, 3, 4, 5*

Pressure Sensor (2) Safety Injection (All Safety Injection Surveillance Requirements)

M 3.

MAIN STEAM ISOLATION Y

(n a.

Low Steam Line Pressure S

R(3)

M(3) 1, 2 b.

Automatic Trip Logic NA NA Q

1, 2 c.

Manual Initiation NA NA R

1, 2 d.

liigh Containment NA NA R

1, 2 Pressure E

4.

LOSS OF POWER 9

430 VOLT EMERGENCY BUS a.

Loss of Voltage (First Level)

NA R

R 1, 2, 3 f

b.

Degraded Voltage (Second Level)

NA R

M 1,2,3 s3 uN