Text

Proposed Tech Specs Re Reactor Trip Sys Instrumentation
	ML13331B167
Person / Time
Site:	San Onofre
Issue date:	04/11/1989
From:	; Southern California Edison Co
To:	;
Shared Package
ML13331B165	List: ML13331B164; ML13331B166; ML13331B167;
References
	NUDOCS 8904170204
	Download: ML13331B167 (9)
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ATTACHMENT 2 PROPOSED TECHNICAL SPECIFICATIONS 8904170204 890411 POR ADOCK 05000206 P

PDC

TABLE 3.5.1-1 REACTOR TRIP SYSTEM INSTRUMENTATION MINIMUM TOTAL NO.

CHANNELS CHANNELS APPLICABLE FUNCTION UNIT OF CHANNELS TO TRIP OPERABLE MODES ACTION I. Manual Reactor Trip 2

1 2

1, 2 I

2 I

2 3*, 4*, 5*

7

2. Power Range, Neutron Flux, 4

2 3

1, 2 2#

Overpower Trip

3. Power Range, Neutron Flux, 4

1**

4 1, 2 28#

Dropped Rod Rod Stop

4. Intermediate Range, Neutron 2

I 2

1##, 2***

3 Flux

5. Source Range, Neutron Flux A. Startup 2

l**

2 2##

4 B. Shutdown 2

1**

2 3*, 4*, 5*

7 C. Shutdown 2

0 1

3, 4, and 5 5

6. NIS Coincidentor Logic 2

I 2

1, 2 29 3*, 4*, 5*

7

7. Pressurizer Variable 3

2 2

I*###

6#

Low Pressure

8. Pressurizer Fixed High 3

2 2

1, 2 6#

Pressure

9. Pressurizer High Level 3

2 2

1 6#

TABLE 3.5.1-1 (Continued)

TABLE NOTATION With the reactor trip system breakers in the closed position, the control rod drive system capable of rod withdrawal.

A "TRIP" will stop all rod withdrawal.

Startup Rate Circuit enabled at 10-4% reactor power.

The provisions of Specification 3.0.4 are not applicable.

Below the Source Range High Voltage Cutoff Setpoint.

Below the P-7 (At Power Reactor Trip Defeat) Setpoint.

Above the P-7 (At Power Reactor Trip Defeat) Setpoint.

ACTION STATEMENTS ACTION 1 -

With the number of OPERABLE channels one less than the Minimum Channels OPERABLE requirement, restore the inoperable channel to OPERABLE status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months or be in HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

ACTION 2 -

With the number of OPERABLE channels one less than the Total Number of Channels, STARTUP and/or POWER OPERATION may proceed provided the following conditions are met:

a. The inoperable channel is placed in the tripped condition within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months .

b. The Minimum Channels OPERABLE requirement is met; however, the inoperable channel may be returned to the untripped condition for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for surveillance testing of other channels per Specification 4.1.

ACTION 3 -

With the number of channels OPERABLE one less than the Minimum Channels OPERABLE requirement and with the THERMAL POWER level:

a. Below the Source Range High Voltage Cutoff Setpoint, restore the inoperable channel to OPERABLE status prior to increasing THERMAL POWER above the Source Range High Voltage Cutoff Setpoint.

b. Above the Source Range High Voltage Cutoff Setpoint but below 10 percent of RATED THERMAL POWER, restore the inoperable channel to OPERABLE status prior to increasing THERMAL POWER above 10 percent of RATED THERMAL POWER.

However, one channel may be bypassed for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for surveillance testing per Specification 4.1, provided the other channel is OPERABLE.

ACTION 4 -

With the number of OPERABLE channels one less than the Minimum Channels OPERABLE requirement suspend all operations involving positive reactivity changes.

ATTACHMENT 1 EXISTING TECHNICAL SPECIFICATION 3.5 INSTRUMENTATION AND CONTROL 3.5.1 REACTOR TRIP SYSTEM INSTRUMENTATION APPLICABILITY:

As shown in Table 3.5.1-1.

83 OBJECTIVE:

To delineate the conditions of the Plant instrumentation and 84 safety circuits necessary to ensure reactor safety.

SPECIFICATION:

As a minimum, the reactor trip system instrumentation channels and interlocks of Table 3.5.1-1 shall be OPERABLE.

ACTION:

As shown in Table 3.5.1-1.

BASIS:

During plant operations, the complete instrumentation systems will normally be in service.(1) Reactor safety is provided by the Reactor Protection System, which automatically initiates appropriate action to prevent exceeding established limits.(2) Safety is not compromised, however, by continuing operation with certain instrumentation channels out of service since provisions were made for this in the plant 117 design.(1)(3) This Standard outlines limiting conditions for 2/13/88 operation necessary to preserve the effectiveness of the reactor control and protection system when any one or more of the channels is out of service.

References:

(1) Final Engineering Report and Safety Analysis, Section 6.

(2) Final Engineering Report and Safety Analysis, Section 6.2.

117 (3)

NIS Safety Review Report, April 1988 12/13/88 SAN ONOFRE -

UNIT 1 3-44 Revised:

12/21/88

TABLE 3.5.1-1 REACTOR TRIP SYSTEM INSTRUMENTATION MINI MUM TOTAL NO.

CHANNELS CHANNELS APPLICABLE FUNCTION UNIT OF CHANNELS TO TRIP OPERABLE MODES ACTION

1. Manual Reactor Trip 2

I 2

1, 2 I

2 2

3*, 4*, 5*

7

2.

Power Range, Neutron Flux, 4

2 3

1, 2 2#

Overpower Trip

3. Power Range, Neutron Flux, 4

1*

4 1, 2 28#

Dropped Rod Rod Stop

4. Intermediate Range, Neutron 2

I 2

1##, 2 3

Flux

5. Source Range, Neutron Flux A. Startup 2

i**

2 2"#

4 B. Shutdown 2

1**

2 3*, 4*, 5*

7 C. Shutdown 2

0 I

3, 4, and 5 5

6. NIS Coincidentor Logic 2

I 2

1, 2 29 3*, 4*, 5*

7

7. Pressurizer Variable 3

2 2

I##

6#

Low Pressure

8. Pressurizer Fixed High 3

2 2

1, 2 6#

Pressure IN,)

9. Pressurizer High Level 3

2 2

6#

0O H F WH

"-,-4 00

TABLE 3.5.1-1 (Continued)

REACTOR TRIP SYSTEM INSTRUMENTATION MINIMUM TOTAL NO.

CHANNELS CHANNELS APPL I CABLE FUNCTION UNIT OF CHANNELS TO TRIP OPERABLE MODES ACTION

10.

Reactor Coolant Flow A. Single Loop I/loop I/loop in any I/loop in each I

6#

(Above 50% of Full Power) operating loop operating loop B. Two Loops I/loop I/loop in two I/loop in each 1l###

6#

(Below 50% of Full Power) operating loops operating loop II. Steam/Feedwater Flow Mismatch 3

2 2

1,2 6#

12. Turbine Trip-Low Fluid Oil Pressure 3

2 2

15##5 6#

En OD a)

OD OD

TABLE 3.5.1-1 (Continued)

TABLE NOTATION 83 With the reactor trip system breakers in the closed position, the 11/2/84 control rod drive system capable of rod withdrawal.

A "TRIP" will stop all rod withdrawal.

The provisions of Specification 3.0.4 are not applicable.

Below the Source Range High Voltage Cutoff Setpoint.

Below the P-7 (At Power Reactor Trip Defeat) Setpoint.

Above the P-7 (At Power Reactor Trip Defeat) Setpoint.

117 12/13/88 ACTION STATEMENTS ACTION 1 -

With the number of OPERABLE channels one less than the Minimum Channels OPERABLE requirement, restore the inoperable channel to OPERABLE status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months or be in HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

ACTION 2 -

With the number of OPERABLE channels one less than the Total Number 83 of Channels, STARTUP and/or POWER OPERATION may proceed provided 11/2/84 the following conditions are met:

a. The inoperable channel is placed in the tripped condition within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months .

b. The Minimum Channels OPERABLE requirement is met; however, the 117 inoperable channel may be returned to the untripped condition 12/13/88 for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for surveillance testing of other channels per Specification 4.1.

ACTION 3 -

With the number of channels OPERABLE one less than the Minimum Channels OPERABLE requirement and with the THERMAL POWER level:

a. Below the Source Range High Voltage Cutoff Setpoint, restore the inoperable channel to OPERABLE status prior to increasing THERMAL POWER above the Source Range High Voltage Cutoff 83 Setpoint.

11/2/84

b. Above the Source Range High Voltage Cutoff Setpoint but below 10 percent of RATED THERMAL POWER, restore the inoperable channel to OPERABLE status prior to increasing THERMAL POWER above 10 percent of RATED THERMAL POWER.

However, one channel may be bypassed for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for 117 surveillance testing per Specification 4.1, provided the other 12/13/88 channel is OPERABLE.

83 ACTION 4 -

With the number of OPERABLE channels one less than the Minimum 11/2/84 Channels OPERABLE requirement suspend all operations involving positive reactivity changes.

Typo Revision:

2/17/89 SAN ONOFRE -

UNIT 1 3-47 Revised:

12/21/88

ACTION 5 -

With the number of OPERABLE channels one less than the Minimum Channels OPERABLE requirement, verify compliance with the SHUTDOWN MARGIN requirements of Specification 3.5.2 as applicable, within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months thereafter.

ACTION 6 -

With the number of OPERABLE channels one less than the Total Number of Channels, STARTUP and/or POWER OPERATION may proceed until performance of the next required OPERATIONAL TEST provided 83 the inoperable channel is placed in the tripped condition within 11/2/84 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months .

ACTION 7 -

With the number of OPERABLE channels one less than the Minimum Channels OPERABLE requirement, restore the inoperable channel to OPERABLE status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months or open the reactor trip breakers within the next hour.

ACTION 28 -

With the number of OPERABLE channels less than the Minimum Channels OPERABLE requirements, within one hour reduce THERMAL POWER such that Tave is less than or equal to 551.5*F, and place the rod control system in manual mode.

117 ACTION 29 - With the number of OPERABLE channels one less than the Minimum 2/13/88 Channels OPERABLE requirements, be in at least HOT STANDBY within 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months ; however, one channel may be removed from service for up to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months for surveillance testing per Specification 4.1, provided the other channel is OPERABLE.

SAN ONOFRE -

UNIT 1 3-48 Revised:

12/21/88

ML13331B167

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