ML20082G428

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Proposed Tech Spec 3/4.8-2 Re Operability of Diesel Generator 13
ML20082G428
Person / Time
Site: Grand Gulf Entergy icon.png
Issue date: 08/13/1991
From:
ENTERGY OPERATIONS, INC.
To:
Shared Package
ML20082G425 List:
References
NUDOCS 9108190119
Download: ML20082G428 (3)


Text

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-[ NL-91/11 FOR INFORMATION 3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES A.C. SOURCES - OPERATING LIMITING CMDIT_I_0N FOR OPERATION 3.8.1.1 . minimum, the following A.C. electrical power sources shall be OPERABLE:

a. Two physically independent circuits between the offsite transmission network and the onsite Class 1E distribution system, and
b. Three separate and independent diesel generators, esca with:
1. Separate day fuel tanks containing a minimum of 220 gallons of fuel.
2. ' A separate fuel storage system containing a minimum of:

a) 57,200 gallons of fuel each for diesel generators 11 and 12, and b) 39,000 gallons of fuel for diesel generator 13,

3. A separate fuel transfer pump.

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3.

ACTION:

a. With one offsite circuit of the above required A.C. electricai power sources inoperable, demonstrate the OPERABILITY .f the remaining A.C.

sources by performing Surveillance Requirement 4.8.1.1.1.a 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. Demonstrate the OPERABILITY of the remaining OPERABLE diesel generators by performing Surveillance Requirement 4.8.1.1.2.a.4* for one diesel generator at a time within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Restore the offsite circuit to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from time of initial loss or be in at least .

HOT SHUTDOWN within the next 12 hour1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> *. and in COLD-SHUTDOWN within the {

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

b. With either diesel generator-11 or 12 of the above required A.C.

electrical power sources inoperable, demonstrate the OPERABILITY of i the abase required A.C. offsite sources by performing Surveillance i Requirement 4.8.1.1.1.a 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 /> L thereafter. Demonstrate the OPERABILITY of the remaining OPERABLE diesel generators by performing Surveillance Requirement 4.8.1.1.2.a.4*

within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Restore the inoperable diesel generator to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

l l " Specification 4.8.1.1.2.a.4 must be performed for diesel generator 13 only when the HPCS system is OPERABLE.

GRAND GULF-UNIT 1 3/4 8-1 Amendment No. 30 9108190119 910813 6 DR ADOCK 0500g

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', .' LNLN1 11-x ELECTRICAL POWER SYSTEMS;

{

LIMITINGi ,,1DITION FOR OPERATION (Continued) l ACTION (Continued) l

- c? With one offsite circuit and_ diesel generator 11 or 22 of the above required A.C.-electrical power sources ino>erable, demonstrate the-  !

OPERABILITY of the remaining A.C. sources >y performing Surveillance i Requirement 4.8.1.1.1.a within I 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. Demonstrate the OPERABILITY of the remaining OPERABLE diesel generators, for one diesel generator at a time, by performing .j

. = Surveillance- Requirement 4.8.1.1.2.a.4* within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. Restore at '

least one of the inoperable A.C. sources to OPERABLE status within  ;

' 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and  !

in COLD SHUT 00WN within the following 24_ hours.. i d.. With either diesel generator 11 or 12 of the above required A.C. _l electrical. power sources inoperable, in= addition to ACTION b or c, as applicable, verify within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> that all required systems, subsys- j tems, trains, components-and devices that depend on the remaining- >

OPERABLE diesel generator 11 or 12 as a-source of emergency power are  ;

also OPERABLE; otherwise, be in at 1 east HOT SHUTDOWN within the next  :

-12 hours and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.  !

2

e. With both of-the above required offsits circuits inoperable, demon- I strate'the OPERABILITY of the threa required diesel generators, by  !

performing _ Surveillance Requirement.4.8.-l.1.2.a.4* for one diesel  !

generator at a time within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />,unless the diesel generators are i

.already operating. Restore at least one of the above required off- i site circuits to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least i HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. ,

?

f. With diesel generators 11and 12 of the above required A.C. electrical  ;

power sources inoperable, demonstrate the_ OPERABILITY of the remain-  :

ing A.C. sources by performing Surveillance-Requirement 4.8.1.1.1,a

  • 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 hoces thereafter. Restore at i least one of_-the inoperable diesel generators 11 or 12 to OPERABL" -!

status within-2' hours and demonstrate the OPERABILITY of diesel:  :

h generator 13 within the next 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> by performing Surveillance Re<  !

E quirement 4.8.1.1.2.a.4*-or be in at least WOT SHUTDOWN within the i t

next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. 1 o g. - With diesel generator 13 of the above required A.C. electrical: power sources inoperable -demonstrate the OPERABILITY of the offsite A.C.

j l:

L

. sources by performing Surveillance Requirement 4.8.1.1.1.a within i 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 huurs thereafter. Demonstrate the  :

OPERABILITY of the remaining OPERABLE. diesel generators by performing ,

Surveillance Requirement 4.8.1.1.2.a.4 for one diesel 24 time withir# hours. Restore diesel generator 13 to Ofenerator at a ERABLE status l ,

o' within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or declare tha HPCS systes inoperable and take the  !

ACTION required _by Specification 3.5.1. j i  !

5pecification 4.8.1.1.2.a.4 mun be performed for diesel generator 13 only when the HPCS system is OPEilABLE.  ;

GRAND GULF-UNIT 1 3/4 S-2 Amendment No. M, l i

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., NL-91/11 ER,INFORMATION e

' ELECTRICAL POWER SYSTEMS SURVEILLANCE REQU_IR_E,'iENTS E

4.8.1.1.1 Eat.h of the above required independent circuits between the off5ite transmission network and the onsite Class 1E distribution system shall be:

a. Determined OPERABLE at least once per 7 days by verifying correct breaker alignments and indicated power availability, and
b. Demonstrated OPERABLE at least once per 18 months during shutdown by manually transferring unit power supply from the normal circuit to the alternate circuit.
4. 8.1.1. 2 Each of the above required diesel generators shall be demonstrated OPERABLE:
a. In accordance with the frequency specified in Table 4.P.1.1.2-1 on a STAGGERED TEST BASIS by:
1. Verifying the fuel level in the day tank.
2. Verifying the fuel level in the fuel storage tank,
3. Verifying the fuel transfer pump starts and transfets fuel from the storage system to the day tank.

4.* '/erifying the diesel starts from standby condition and acceler-ates to at least 441 rpm for diesel generators 11 and 12 and 882 rpm for diesel generator 13 in less than or equal to 10 sec-onds. The generator voltage and frequency shall be 4160 i  !

^

416 volts and 6011.2 Hz within 10 seconds after the start signal. The diesel generator shall be started for this test by using one of tht "o11owing signals:

a) Manual, b) Simulated loss of offsite power by itself, c) Simulated loss of offsite power in conjunction with an ESF 1 actuation test signal.  !

d) An ESF actuation test signal by itself.

  • All diesel generator starts for the purpose ( 'his Surveillance Requirement may be preceded by an engine prelube period. . diesel generator start (10 sec) from standby conditicns shall be performed at least once per 184 days in these surveillance tests. All other engine starts for the pur- '

pose of this surveillance testing may be preceded by warmup procedures as rec-ommended by the manufacturer so that the mechanical stress and wear on the diesel engine are minimized.

GRAND GULF-UNIT 1 3/4 8-3 Amendment No. 30

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