ML20009H448

Proposed Tech Specs Table 3.5-1 Re Instruments Operating Conditions

ML20009H448
Person / Time
Site:	Three Mile Island
Issue date:	08/04/1981
From:	METROPOLITAN EDISON CO.
To:
Shared Package
ML20009H447	List: ML20009H446 ML20009H448
References
NUDOCS 8108100125
Download: ML20009H448 (5)

Text

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$$. TABLE 3.5-1 RR

n u INSTRUMENTS OPERATING CONDITIONS o

um o8 (A) (B) (C)

30$ - Minimum Operable Minimum Degree Operator Action if Conditions Q &' Functional Unit Channels of Redundancy of Column A Cannot be Met A. Reactor Protection System

1. Manual pushbutton 1 0 Maintain hot shutdown

2. Power range instrument 3(a) 1(a) Maintain hot shutdown channel

3. Intermediate range 1 0 Maintain hot shutdown (b) instrument channels y 4. . Source range instrument .l' 0 Maintain hot shutdown (c) y channels

5. Reactor coolant temperature 2 1 Maintain hot shutdown instrument channels

6. Pressure-temperature 2 1 Maintain hot shutdown instrument channels

7. Flux / imbalance / flow. 2 1 Maintain hot shutdown instrument channels

8. Reactor coolant pressure

a. High reactor coolant 2 1 Maintain hot shutdown pressure instrument channels

b. Low reactor coolant 2 1' Maintain hot shutdown pressure instrunent channels

TABLE 3.5-1 -Continusd .

INSTRUMENTS OPERATING CONDITIONS (A) -(B) (C)

Minimum Operable Minimum Degree Operator Action if Conditions Functional Unit Channels of Redundancy of Column A Cannot be Met A.- Reactor Protection System (con't.)

J9. ' Power / number of pumps 2 1 Maintain hot shutdown instrument channels

10. -High reactor building 2 1 . Maintain hot shutdown.

pressure channels (a) Forfchannel testing, calibration, or. maintenance, the minimum number of operable channels

.may be two and a degree of' redundancy of one for a maximum of four hours.

u (b) .When.2 of 4 power range. instrument channels are greater than 10 percent full power, hot shutdown is not required.

.h.

(c) When 1 of 2 intermediate range instrument channels is greater than '10-10 amps, or 2 of 4 power range instrument channels are' greater than 10 percent full power, hot shutdown is not required.

B. Other Reactor Trips

1. 2(a) 1(a) . Maintain less than 7% indicated power

. Loss of Feedwater 2(b) 1(b) Maintain less than 20% indicated power

2. Turbine Trip (a) Bypass of the:feedwater pump trip signal may be placed in effect when indicated reactor power is less than 7%. The bypass will be removed when reactor power. is raised above 7%.

(b) The main turbine trip bypass may be placed in effect when indicated power is less than 20%.

.The bypass.will be removed when the reactor power is increased above 20%.

TABLE 3.5-1 Continued -

-INSTRUMENTS OPERATING CONDITIONS Functional Unit. (A) _ (B) (C)

Minimum Operable . Minimum Degree of_ Operator. Action if Conditions C. Engineered Safety Features Analog Channels Redundancy of Column A and B Cannot be Met (a)

1. Makeup and Purification System (high pressure injection mode)

a. Reactor Coolant Pressure 2 1 Hot Shutdown Instrument Channels

b. Reactor Building 4 psig 2 1 Hot Shutdown Instrument Channels <

c.- Manual Pushbutton.(b) 2 1 Ilot Shutdown u

& 2.- Decay Heat System (low pressure injection mode) ,

a. Reactor Coolant Pressure 2 1 Ilot Shutdown Instrument Channels

b. Reactor' Building 4 psig 2 1 Ilot Shutdown Instrument Channels

c. Reactor Coolant Pressure 1 0 Open circuit breaker D.H. Valve Interlock at MCC for Dil-V1 or Bistable- ' Dil-V2 with the affected valve in the closed position or. maintain R.C. pressure less than 350 psig.

my-

m _ _ - . _ _ . . . _ _ _ ._

LTABLE 3.5-1 Continued 9

INSTRUMENTS OPERATING CONDITIONS Functional' Unit (A) (B) (C) .

Minimum Operable Minimum Degree of Operator Acti.)n if Conditions C.. Engineered Safety Features con't. Analog Channels Redundancy of' Column A and B Cannot'be Met (a).

~

3. Reactor Building Isolation and Reactor Building Cooling System

a. Reactor Building 4 psig' 2 1 Hot Shutdown Instrument Channel

b. _ Manual Pushbutton 2 1 Hot Shutdown

c. RPS Trip 2 1 Hot Shutdown

d. Reactor Building 30 psig 2 1 Hot Shutdown Y~ e. RCS Pressure less than'1600 psig' 2 l' Hot Shutdown

g. .,

4. Reactor Building-Spray System

a. Reactor. Building 30 2(d) 1 Hot Shutdown psig Instrument Channel

b. Spray Pump Manual Switches (c) 2 1 Hot Shutdown

5. .4.16KV ES Bus Undervoltage Relays

a. Degraded Grid Voltage Relays 2 1 (e)

.b. Loss of Voltage Relay 2 1 (e)

6. . Emergency Feedwater System Loss of Feedwater or RC Pump ~ 2; 1 Hot Shutdown.

(all four) - Start Motor and

• Turbine-Pumps a

_.._,..,%i. _

I L TABLE 3.5-1 Continued INSTRUMENTS OPERATING CONDITIONS Functional Unit C. Engineered Safety Features (con't.) c (a) 'If minimum conditions are not met within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, the unit shall then be placed in a cold shutdown condition.

(b). Also initiatus Low Pressure injection.

(c)i . Spray valves opened by manual _ pushbutton listed in item 3 above.

(d) Two out of three switches in each actuation channel operable.

(e) .If a relay fails in the untripped state, it shall be placed in a tripped state within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> to obtain a. degree of redundance of 1. The relay may be removed from the trippend state for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for. functional testing pursuant to Table 4.1-1.

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