ML20107M785

Corrected Proposed Tech Spec Table 3.5.1-1 Changes Re Upgrade of Emergency Feedwater Sys

ML20107M785
Person / Time
Site:	Arkansas Nuclear
Issue date:	11/08/1984
From:	ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML20107M759	List: 1CAN118406, Forwards Corrected 840912 Proposed Tech Spec Changes Re Upgrade of Emergency Feedwater Sys to Meet Requirements of NUREG-0737 Item II.E.1.2.Administrative Items Inadvertently Omitted from Previous Submittal ML20107M785
References
NUDOCS 8411140262
Download: ML20107M785 (3)

Text

.

Table 3.5.1-1 (Cont'd)

ENGINEERED SAFEGUARDS ACTUATION SYSTEM (Cont'd) 1 2

3 4

5 No. of Operator action channels Min.

Min, if conditions or i

l No. of for sys-operable degree of column 3 or 4 channels tem trip channels redundancy cannot be met 1

4.

Reacter building spray pumps (Note 8) j a.

Reactor building 30 psig instrument channel 3

2 3 (Note 6) 1 Notes 1, 5 i

i b.

Manual trip pushbutton 2

1 2

1

!otes 1, 5 5.

Reactor building spray valves (Note 8) a.

Reactor building 30 psig instrument channel 3

2 3 (Note 6) 1 Notes 1, 5 b.

Manual trip pushbutton 2

1 2

1 Notes 1, 5 EMERGENCY FEEDWATER INITIATION AND CONTROL SYSTEM 1.

EFW Initiation I

a.

Manual 2

1 2

1 Note 1 l

l l

45a 8411140262 841108 PDR ADOCK 05000313 P

PDR

J TABLE 3.5.1-1 (Cont'd)

OTHER SAFETY RELATED SYSTEMS 1

2 3

4 5

No. of Operator action channels Min.

Min.

if conditions or No. of for sys-operable degree of

-column 3 or 4 channels tem trip channels redundancy cannot be met 2.

Pressurizer level channels 3

N/A 2

1 Note 10 3.

Emergency Feedwater Flow channels 2/S.G.

N/A 1

0 Note 10 4.

RCS subcooling margin monitors 2

N/A 1

0 Note 10 5.

Electromatic relief valve flow monitor 2

N/A 1

0 Note 11 6.

Electromatic relief block valve position indicator 1

N/A 1

0

. Note 12 7.

Pressurizer code safety valve flow monitors 2/ valve N/A 1/ valve 0

Note 10 8.

Degraded Voltage Monitoring a.

4.16KV Emergency Bus Undervoltage 2/ Bus 1/ Bus 2/ Bus 0

Note 14 b.

460V Emergency Bus Undervoltage

• 1/ Bus 1/ Bus 1/ Bus 0

Notes 13, 14 9.

Chlorine Detection Systems 2

1 2

0 Notes 17, 18 CTwo undervoltage relays per bus are used with a coincident trip logic (2-out-of-2)

Amendment No. 50, 50, 69 45d

, L3 TABLE 3.5.1-1 (Cont'd)

NOTES:

1.

Initiate a shutdown _using normal operating instructions and place the reactor in the hot shutdown condition within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> if the requirements of Columns 3 and 4 are not met.

2.

When 2 of 4 power range instrument channels are greater than 10%' rated power, hot' shutdown is not required.

3.

When 1 of 2 intermediate range instrument channels is greater than 10 10 amps,' hot shutdown is not required.

4.

For channel 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, after which Note 1 applies.

5.

If the requirements of Columns 3 or 4 cannot be met within an additional 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />, place the reactor in the cold shutdown condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

6.

The minimum number of operable channels may be reduced to 2, provided that the system is reduced to 1 out of 2 coincidence by tripping the remaining channel.

Otherwise, Specification 3.3 shall apply.

7.

These channels initiate control rod withdrawal inhibits not reactor trips at <10% rated power.

Above 10% rated power, those inhibits are bypassed.

8.

If any one component of a digital subsystem is inoperable, the entire digital subsystem is considered inoperable.

Hence, the associated safety features are inoperable and Specification 3.3 applies.

9.

The minimum number of operable channels may be reduced to one and the minimum degree of redundancy to zero for a maximum of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, after which Note 1 applies.

10. With the number of operable channels less than required, either restore the inoperable channel to operable status within 30 days, or be in hot shutdown within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

11. With the number of operable channels less than required, isolate the electromatic relief valve within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, otherwise Note 9 applies.

Amendment No. 50, 60 45e

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