ML18038B906

Proposed Tech Specs Supporting one-time 14-day Limiting Condition for Operation for Each EDG to Accommodate Pending Vendor Recommended Maint Activities

ML18038B906
Person / Time
Site:	Browns Ferry
Issue date:	06/19/1997
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML18038B905	List: ML18038B904 ML18038B906
References
NUDOCS 9707020241
Download: ML18038B906 (23)

Text

ENCLOSURE 2

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 2 AND 3 PROPOSED TECHNICAL SPECIFICATION (TS)

CHANGES TS-391T MARKED PAGES CUSTOM TS I.

AFFE TED PA E LI T Unit 2 page 3.9/4.9-9 Unit 3 page 3.9/4.9-8 See attached.

970702024i 9706i9 PDR ADOCK 05000260 P

PDR

LIMITIHG COHDITIOHS FOR OPERATIOH NOV i8 1988 SURVEILLAHCE REQUIREMEHTS

'.9.B.

4.9.B.

3 ~

When one of the units 1

and 2 diesel generator is IHOPEKQKZ, continued REACTOR POWER OPERATIOH is permissible during the succeeding 7 days, provided that 2 offsite power sources are available as specified in 3.9.A.l.c and all of the CS, RHR (LPCI and containment cooling)

systems, and the remaining three units 1 and 2 diesel generators are OPERABLZ.

If this requirement cannot be met, an orderly shutdown shall be initiated and the reactor shall be in the COLD SHUTDOWH COHDITIOH within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

3.

When one of the units 1 and 2 diesel generators is found to be IHOPERABLE, all of the remaining diesel generators shall be demonstrated to be OPERABLZ within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and power availability for the associated boards shall be verified within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

4, When one units 1 and 2

4-kV shutdown board is IHOPERABLZ, continued REACTOR POWER OPERATIOH is permissible for a period of 5 days provided that 2 offsite power sources are available as specified in 3.9.A.l.c and the remaining 4-kV shutdown boards and associated diesel generators, CS, RHR (LPCI and containment cooling)

systems, and all 480-V emergency power boards are OPERABLE. If this requirement cannot be

met, an orderly shutdown shall b'e initiated and the reactor shall be in the COLD SHUTDOWH COHDITIOH within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

4.

When one 4-kV shutdown board is found to be IHOPERABLE, all diesel generators associated with the remaining 4-kV

'hutdown boards shall be demonstrated to be OPERABLZ within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and power availability for the remaining 4-kV

'hutdown boards shall be verified within 1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

[Temporary Change:

The preceding 7-day LCO time limit may be extended to 14 days to support completion of maintenance activities during the time period from January 1,

1998, to February 1,

1999, after which time this temporary change is no longer valid.

This allowance can be. used only once for each individual diesel generator).

BFH Unit 2 3'/4.9-9 AMENDMENTNO. 15 4

4 UX R

E EC IC SYS NG COtjtD 0

S 0

OP T 0 AUB 19 1888 CE U

S 3.9.B.

0 erat o

v th o erable

~ui >~me t 4.9.B.

0 erat o

with no erable

~uiment Whenever the reactor is in STARTUP mode or RUH mode and not in a Cold Condition, the availability of electric power shall be as specified in 3.9.A except as specified herein.

1.

From and after the date that only one offsite pover source is available, reactor operation is permissible under this condition for seven days.

1.

When only one offsite pover source is OPERABLE, all unit 3 diesel generators must be demonstrated to be OPERABLE vithin 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and pover availability for the associated boards shall be verified vithin 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8

hours thereafter.

2.

When one unit 3 diesel generator (3A, 3B, 3C, or 3D) is inoperable, continued reactor operation is permissible during the succeeding 7 days, provided that tvo offsite pover sources are available as specified in 3.9.A.l.c.

and all of the CS, RHR (LPCI and containment cooling) systems, and the remaining three unit 3 diesel generators are OPERABLE.

f th s require-ment cannot be met, an orderly shutdown shall be initiated and the reactor shall be shut dovn and in the Cold Condition vithin 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

2.

When one unit 3 diesel generator is found to be inoperable, all of the remaining unit 3 diesel generators shall be demonstrated to be OPERABLE vithin 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and pover availability for the associated boards shall be verified vithin 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

[Temporary Change:

The preceding extended to 14 days to support comp e

maintenance activities 1,

1998, to February 1,

19 the time period 99 hi temporary change This allowance which time t s

e is no longer val can be used only once for eac individual diesel genezatorj.

/<~ ~"+)

BFH Unit 3 3.9/4.9-8 AMENDMBfTHg, y p 4

ENCLOSURE 3

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 2 AND 3 PROPOSED TECHNICAL SPECIFICATION (TS)

CHANGES TS-391T REVISED PAGES CUSTOM TS I.

AFFE TED PA E LI T Unit 2 page 3.9/4.9-9 Unit: 3 page 3.9/4.9-8 II.

VI ED PA E See attached.

4 E

CTRIC STE

• J LI T

G CONDI ONS FO OP ION SURVEI LANCE RE UXREMENTS 3.9.B.

O eration With I o e able

~Ei ment 3.

When one of the units 1

and 2 diesel generator is INOPERABLE, continued REACTOR POWER OPERATION is permissible during the succeeding 7 days, provided that 2 offsite power sources are available as specified in 3.9.A.l.c and all of the CS, RHR (LPCI and containment cooling)

systems, and the remaining three units 1 and 2 diesel generators are OPERABLE.

4.9.8.

0 eration W th Ino erable

~Ei imermt 3.

When one of the units 1 and 2 diesel generators is found to be INOPERABLE, all of the remaining diesel generators shall be demonstrated to be OPERABLE within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and power availability for the associated boards shall be verified within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

P'emporary Change:

The preceding 7-day LCO time limit may be extended to 14 days to support completion of maintenance activities, during the time period from January 1, 1998, to February 1, 1999, after which time this temporary change is no longer valid. This allowance can be used only once for each individual diesel generator.]

If this requirement cannot be met, an orderly shutdown shall be initiated and the reactor shall be 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 />.

'4.

When one units 1 and 2

4-kV shutdown board is INOPERABLE, continued REACTOR POWER OPERATION is permissible for a period of 5 days provided that 2 offsite power sources are available as specified in 3.9.A.l.c and the remaining 4-kV shutdown boards and associated diesel generatorsg CSg RHR (LPCI and containment cooling)

systems, and all 480-V emergency power boards are OPERABLE. If this requirement cannot be

met, an orderly shutdown shall be initiated and the reactor shall be 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 />.

4.

When one 4-kV shutdown board is found to be INOPERABLE, all diesel generators associated with the remaining 4-kV shutdown boards shall be demonstrated to be OPERABLE within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and power availability for the remaining 4-kV shutdown boards shall be verified within 1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

BFN Unit 2 3.9/4.9-9

r ~

3.9 UXILI Y ELECTRICAL S STE I

LIM TI CONDIT ONS F

OPERATIO SURVEILLANCE RE UIREMENTS 3.9.B.

eratio w t Ino erable EcCE~>m~ef Whenever the reactor is in STARTUP mode or RUN mode and not in a Cold Condition, the availability of electric power shall be as specified in 3.9.A except as specified herein.

4.9.B.

0 eration wit I o erable

~cCu~iient l.

From and after the date that only one offsite power source is available, reactor operation is permissible under this condition for seven days.

1.

When only one offsite power source is OPERABLE, all unit 3

diesel generators must be demonstrated to be OPERABLE within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and power availability for the associated boards shall be verified within l hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

2.

When one unit 3 diesel generator (3A, 3B, 3C, or 3D) is inoperable, continued reactor operation is permissible during the succeeding 7 days, provided that two offsite power sources are available as specified in 3.9.A.l.c.

and all of the CS, RHR (LPCI and containment cooling) systems, and the remaining three unit 3 diesel generators are OPERABLE.

2.

When one unit 3 diesel generator is found to be inoperable, all of the remaining unit 3 diesel generators shall be demonstrated to be OPERABLE within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, and power availability for the associated boards shall be verified within l hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

[Temporary Change:

The preceding 7-day LCO time limit may be extended to 14 days to support completion of maintenance activities during the time period from January 1, 1998, to February 1, 1999, after which time this temporary change is no longer valid. This allowance can be used. only once for each individual diesel generator.]

If this requirement cannot be met, an orderly shutdown shall be initiated and the reactor shall be shut down and in the Cold Condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

BFN Unit 3 3.9/4.9-8

4

~ ~

ENCLOSURE 4

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 2 AND 3 PROPOSED IMPROVED STANDARD TECHNICAL SPECIFICATIONS (ISTS)

CHANGE TS-391T MARKED PAGES ISTS I.

AFFE TED PA E LI T Unit 2 and 3

page 3.8-3 II.

D PA E

See attached.

~

AC Sources Operating 3.8.1 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME B.

(continued)

B.3.1 Determine OPERABLE Unit 1

and 2 DG(s) are not inoperable due to commo'n cause failure.

24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> OR B.3.2 Perform SR 3.8.1.1 for OPERABLE Unit 1

and 2 DG(s).

24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> AND B.4 Restore Unit 1

and 2

DG to OPERABLE status.

7 day AND 14 days from discovery of failure to meet LCO C.

One division of 480 V

load shed logic inoperable.

C.l Restore required division of 480 V

load shed logic to OPERABLE status.

7 days D.

One division of common accident signal logic inoperable.

D. 1 Restore required division of common accident signal logic to OPERABLE status.

7 days (continued)

• [Temporary Change:

This 7-day LCO time limit may be extended to 14 days to support completion of maintenance activities during the time period from January 1,

1998, to February 1,

1999, after which time this temporary change is no longer valid.

This allowance can be used only once fo each individual diesel.]

BFN-UNIT 2

3. 8-3 Amendment *Rl

AC Sources Operating 3.8.1 ACTIONS CONDITION REQUIRED ACTION COHPLETION TIHE B.

{continued)

B.3. 1 Determine OPERABLE Unit 3 DG(s) are not inoperable due to common cause'ailure.

24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> OR 8.3.2 Perform SR 3.8.1.1 for OPERABLE Unit 3 DG(s).

AND 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> B.4 Restore Unit 3 DG to OPERABLE status, 7 days AND 14 days from discovery of failure to meet LCO C.

One division of 480 V

load shed logic inoperable.

C.1 Restore required division of 480 V

load shed logic to OPERABLE status.

7 days D.

One division of common accident signal logic inoperable.

0.1 Restore required division of common accident signal logic to OPERABLE status.

7 days (continued)

• (Temporary Change:

This 7-day LCO time limit may be extended to 14 days to support completion of maintenance activities during the time period from January 1,

1998, to February 1,

1999, after which time this

)

temporary change is no longer valid.

This allowance can be used only once for g each individual diesel.]

8FN-UNIT 3 3.8-3 Amendment *Rl

ENCLOSURE 5

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 2 AND 3 PROPOSED IMPROVED STANDARD TECHNICAL SPECIFICATIONS (ISTS)

CHANGES TS-391T REVISED PAGES -ISTS I.

AFFE TED PA E LI T Unit 2 and 3

page 3.8-3 page 3.8-3a II.

REVI ED PA E

See attached.

~AC Sources Operating 3.8.1 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME B.

(continued)

B.3.1 OR Determine OPERABLE Unit 1 and 2 DG(s) are not inoperable due to common cause failure.

24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> B.3.2 Perform SR 3.8.1.2 for OPERABLE Unit 1

and 2 DG(s).

AND 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> B.4 Restore Unit 1 and 2

DG to OPERABLE status.

7 days

[Temporary Change:

This 7

day LCO time limit may be extended to 14 days to support completion of maintenance activities during the time period from January 1,

1998, to February 1,

1999, after which time this temporary change is no longer valid.

This allowance can be used only once for each individual diesel.]

AND (continued)

BFN-UNIT 2 3.8-3 Amendment *Rl

~ ~

AC Sources Operating 3.8.1 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME B.

(continued) 14 days from discovery of failure to meet LCO C.

One division of 480 V

load shed logic inoperable.

C.I Restore required division of 480 V

load shed logic to OPERABLE status.

7 days D.

One division of common accident signal logic inoperable.

D. 1 Restore required division of common accident signal logic to OPERABLE status.

7 days (continued)

BFN-UNIT 2 3.8-3a Amendment

AC Sources -Operating 3.8.1 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME B.

(continued) 8.3.1 Determine OPERABLE Unit 3 DG(s) are not inoperable due to common cause failure.

OR B.3.2 Perform SR 3.8.1.1 for OPERABLE Unit 3 DG(s).

AND B.4 Restore Unit 3 DG to OPERABLE status.

24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> 24 hours 7 days

)Temporary Change:

This 7

day LCO time limit may be extended to 14 days to support completion of maintenance activities during the time period from January 1,

1998, to February 1,

1999, after which time this temporary change is no longer valid.

This allowance can be used only once for each individual diesel.]

AND (continued)

BFN-UNIT 3 3.8-3 Amendment *RI

AC Sources -Operating 3.8.1 ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME B.

(continued) 14 days from discovery of failure to meet LCO C.

One division of 480 V

load shed logic inoperable.

C.1 Restore required division of 480 Y

load shed logic to OPERABLE status.

7 days D.

One divi s i on of common accident signal logic inoperable.

D.l Restore required division of common accident signal logic to OPERABLE status.

7 days (continued)

BFN-UNIT 3 3.8-3a Amendment

a t gp V

ENCLOSURE 6

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

TS-391T UNITS 2 AND 3 COMMITMENT

SUMMARY

These compensatory measures will be included as activity restrictions in the plant outage schedule for the EDGs and will be applied for any EDG outage time past the current EDG 7-day LCO.

Require that another off-site power source be available to the affected unit in addition to TS requirement that two off-site sources be available.

Requiring a third off-site source further reduces the likelihood that EDGs would be needed.

3.

Restrict any work activities that would affect the ability to cross-tie the opposite unit EDG to the 4-kV shutdown board for the EDG in the outage (i.e.,

EDG A cross-tie capability to 4-kV Shutdown Board 3EA).

This would ensure that an on-site power source would be readily available for manual alignment to the affected shutdown board if needed.

Restrict work activities on the 500-kV switchyard cross-tie breakers supporting the affected unit.

This will ensure the required 500-kV off-site sources have access to both 500-kV buses, reducing the likelihood that a 500-kV source would be lost to the affected unit.

4.

No high risk switchyard maintenance will be scheduled during the outage time period when the EDG is unavailable.

High risk emergent work, if any, will be required to be approved by the Plant Manager and Operations Manager.

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