ML20216G596

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Proposed Tech Specs,Changing Surveillance Frequency from at Least Once Every 18 Months to at Least Once Per Refueling Interval
ML20216G596
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 04/15/1998
From:
PACIFIC GAS & ELECTRIC CO.
To:
Shared Package
ML20216G555 List:
References
NUDOCS 9804200398
Download: ML20216G596 (8)
v • d • e


Text

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., Attachment A PG&E Letter DCL-08-028 O - '

MARKED-UP TECHNICAL SPECIFICATION PAGES Remove Paae Insert Paae 3/4 8-3 3/4 8-3 3/4 8-4 3/4 8-4 3/4 8-16 3/4 8-16 O

l O

9804200398 980415 PDR ADOCK 05000275 P PDR

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS e

(

4.8.1.1.1 'Each of the above required independent circuits between the offsite 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, indicated power availability, and

%g

b. Demonstrated OPERAB -atJ@ met {$(gionthIsiduring shutdown by:

GFUL=LwG IuTaKVA

1) Transferring 4 k i us $ er pp y from the normal circuit to the alternate circuit (manually and automatically) and to_the delayed access circuit (manually), and
2) Verifying that on a Safety Injection test signal, without loss of offsite power, the preferred, immediate access offsite power source energizes the emergency busses with permanently connected loads and energizes the auto connected emergency (accident) loads through sequencing timers.

@em 10 4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:

a. In accordance with the frequency specified in Table 4.8-1 on a STAGGERED -

TEST BASIS by:*

1) Verifying the fuel level in the engine mounted fuel tank,
2) Verifying the diesel starts from ambient condition and accelerates to at least 900 rpm in less than or equal to 10 seconds. The generator voltage and frequency shall be 4160 + 240/-375 volts and 60 1.2 Hz within 13 seconds after the start signal. The diesel generator shall be started for this test by using one of the following signals:

a) Manual, or b) Simulated loss of offsite power by itself (Startup bus undervoltage),or i

i c) A Safety Injection actuation test signal by itself.

  • All diesel generator starts for the purpose of this surveillance test may be preceded by an engine prelube period. Further, all surveillance tests, with the exception of once per 184 days, may also be preceded by warmup procedures (e.g.,

gradual acceleration and/or gradual loading > 150 sec) as recommended by the manufacturer so that the mechanical stress and wear on the diesel engine is minimized.

DIABLO CANYON - UNITS 1 & 2 3/4 8-3 Amendment Nos.h W and SI_

Jeptepber/2% A994'}

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

3) Verifying the generator is synchronized, loaded to greater than or equal to 2484 kW in less than or equal to 60 seconds, and operates for greater than or equal to 60 minutes,
4) Verifying the diesel generator is aligned to provide standby power to the associated emergency busses, and
5) Verifying the diesel engine protective relay trip cutout switch is '

returned to the cutout position 41lawino each diesel generator test.

b.

S m 32o \

At least once per(MM' Rei r g A tdown  :

ve LM +.2TsTav A L  % 2,

1) Subjecting the diesel to an inspec on in7ccor ance with p s prepared in conjunction with its manufacturer's recommendations for this class of standby service; --
2) Verifying that the load sequence timers are OPERABLE with@eacn ioad sequence timer within the limits specified in Table 4.8-2;
3) Verifying the generator capability to reject a load of great or equal to 508 kW while maintaining voltage at 4160 + 240/-375 volts and frequency at 6013 Hz; I
4) Verifying the generator capability to reject a load of grea an or equal to 2484 kW without tripping. The generator voltage shall not ]

l exceed 4580 volts during and following the load rejection;

5) Simulating a loss of offsite power by itself, and:

a) Verifying de energization of the emergency busses and load '

shedding from the emergency busses, and b) Verifying the diesel starts on the auto-start signal, energizes the emergency busses with pemanently connected loads within 10 seconds, energizes the required auto-connected loads through sequencing timers and operates for greater than or equal to 5 minutes while its generator is loaded with the permanent and auto-connected loads. After energization of these loads, the steady state voltage and frequency of the emergency busses shall be maintained at 4160 + 240/-375 volts and 60 1.2 Hz during this  !

test.

DIABLO CANYON - UNITS 1 & 2 3/4 8-4 Amendm o

. ELECTRICAL POWER SYSTEMS -

~ " ' ~

SURVEILLANCE REQUIREMENTS (Continued)

b. At least once per 92 days and within 7 days after a battery discharge with D.C. bus voltage below 118 volts, or battery overcharge with D.C. bus voltage above 145 volts, by:
1) Verifying that the parameters in Table 4.8-3 meet the Category B limits,
2) Verifying there is no visible corrosion at either terminals or connectog, 150 x 10 ohm,* andor the connection resistance of these items is less
3) Verifying that the average electrolyte temperature of 10 of the connected cells is above h
c. 12.L*F06Li W INTL RNA #

L At least once per {iffef[t by filig--hat:

1) The cells, cell plates and battery racks show no visual indication of physical damage or abnormal deterioration, Ye W) 2 The cell-to-cell and terminal connections are clean, tight, and coated with anticorrosion material,
3) The resistance of each cell-to cell arid terminal connection is less than or equal to 150 x 10-6 ohm,* and
4) The battery charger will supply at least 400 araperes at 130 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. g
d. lVMM, during rifying that the battery Atleastonceper[tetosupplyandmaintaininOPERABLEstatus capacity is adequa ~

gem 3T actual and/or simulated emergency loads for the design duty cycle when the battery is subjected to a battery service test; y>- % e. At least once per 60 months, during shutdown, by verifying that the battery LA pg capacity is at least 80% of the manufacturer's rating when subjected to a performance discharge test. This performance discharge test may be performed in lieu of the batteryge.tvice test required by Specification E TMF0EL WG IMWVAL

f. At least once per,MM during s ut own, y giving performance discharge tests of battery capacity to any battery that shows signs of degradation or has reached 85% of the service life expected for the peJ application. Degradation is indicated when the battery capacity drops more than 10% of rated capacity from its average on previous performance tests, or is below 90's of the manufacturer's rating.
  • The resistance of cell-to-cell connecting cables does not have to be included.

i DIABLO CANYON - UNITS 1 & 2 3/4 8-16 '

i Attachment B 1

PG&E Letter DCL-98-028

\

l PROPOSED TECHNICAL SPECIFICATION PAGES l

1 Remove Paae Insert Paae l 3/4 8-3 3/4 8-3 3/484 3/484 3/4 8-16 3/4 8-16 l

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iO l

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l 1

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O

.' ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS I O 4.8.1.1.1 E'ach of the above required independent circuits between the offsite U transmission network and the Onsite Class 1E Distribution System shall be: j

a. Determined OPERABLE at least once per 7 days by verifying correct breaker alignments, indicated power availability, and
b. Demonstrated OPERABLE at least once per REFUELING INTERVAL during shutdown by: l
1) Transferring 4 kV vital bus power supply from the normal circuit to the alternate circuit (manually and automatically) and to the delayed access circuit (manually), and
2) Verifying that on a Safety Injection test signal, without loss of offsite power, the preferred, immediate access offsite power source energizes the emergency busses with permanently connected loads and energizes the auto-connected emergency (accident) loads through sequencing timers.

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:

a. In accordance with the frequency specified in Table 4.8-1 on a STAGGERED TEST BASIS by:*
1) Verifying the fuel level in the engine mounted fuel tank,
2) Verifying the diesel starts from ambient condition and accelerates to l at least 900 rpm in less than or equal to 10 seconds. The generator voltage and frequency shall be 4160 + 240/-375 volts and 60
  • 1.2 Hz within 13 seconds after the start signal. The diesel generator shall be started for this test by using one of the following signals:

a) Manual, or j b) Simulated loss of offsite power by itself (Startup bus undervoltage), or l

I c) A Safety Injection actuation test signal by itself.

l l

l

  • All diesel generator starts for the purpose of this surveillance test may be preceded by an engine prelube period. Further, all surveillance tests, with the exception of once per 184 days, may also be preceded by warmup procedures (e.g.,

gradual acceleration and/or gradual loading > 150 sec) as recommended by the o)

C manufacturer so that the mechanical stress and wear on the diesel engine is t

l minimized. .

t DIABLO CANYON - UNITS 1 & 2 3/4 8-3 Amendment Nos. 93 and 92 September 22, 1994 I

i

' ELECTRICAL POWER SYSTEMS l

SURVEILLANCE REQUIREMENTS (Continued) p . .

V

3) Verifying the generator is synchronized, loaded to greater than or )

equal to 2484 kW in less than or equal to 60 seconds, and operates for greater than or equal to 60 minutes,

4) Verifying the diesel generator is aligned to provide standby power to the associated emergency busses, and
5) Verifying the diesel engine protective relay trip cutout switch is 1 returned to the cutout position fellowing each diesel generator test.
b. At least once per REFUELING INTERVAL during shutdown, by: l
1) Subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturer's recommendations for this class of standby service;
2) Verifying that the load sequence timers are OPERABLE with each load sequence timer within the limits specified in Table 4.8-2;
3) Verifying the generator capability to reject a load of greater than or equal to 508 kW while maintaining voltage at 4160 + 240/-375 volts and frequency at 60 1 3 Hz;
4) Verifying the generator capability to reject a load of greater than or O equaito2484kWwitnouttrippio9o.

exceed 4580 volts during and foi wing The generator voltage shall not the load rejection;

5) Simulating a loss of offsite power by itself, and: i a) Verifying de-energization of the emergency busses and load shedding from the emergency busses, and b) Verifying the diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within '

10 seconds, energizes the required auto-connected loads through sequencing timers and operates for greater than or equal to 5 minutes while its generator is loaded with the permanent and auto-connected loads. After energization of these loads, the steady state voltage and frequency of the emergency busses shall be maintained at 4160 + 240/-375 volts and 60 1.2 Hz during this test.

l i

l i

DIABLO CANYON - UNITS 1 & 2 3/4 8-4 Amendment Nos. 93 and 92 September 22, 1994

.. - n - . . . .. . _ - - .

[ELECTRICALPOWERSYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 6- ^t' 1 east oace per 92 days and within 7 days after a battery discharge with O~

D.C. bus voltage below 118 volts, or battery overcharge with D.C. bus voltage above 145 volts, by:

1) Verifying that the parameters in Table 4.8-3 meet the Category B limits,
2) Verifying there is no visible corrosion at either terminals or connectog, 150 x 10 ohm,* andor the connection resistance of these items is less than
3) Verifying that the average electrolyte temperature of 10 of the connected cells is above 60*F.
c. At least once per REFUELING INTERVAL by verifying that: l i
1) The cells, cell plates and battery racks show no visual indication of {

physical damage or abnormal deterioration,

2) The cell-to-cell and terminal connections are clean, tight, and coated with anticorrosion material,
3) The resistance of each cell-to-cell and terminal connection is less i than or equal to 150 x 10-6 ohm,* and '

(3 u'

4) The battery charger will supply at least 400 amperes at 130 volts for at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
d. At least once per REFUELING INTERVAL, during shutdown, by verifying that' l l

the battery capacity is adequate to supply and maintain in OPERABLE status all of the actual and/or simulated emergency loads for the design duty cycle when the battery is subjected to a battery service test; J

e. At least once per 60 months, during shutdown, by verifying that the battery capacity is at least 80% of the manufacturer's rating when subjected to a j performance discharge test. This performance discharge test may be i performed in lieu of the battery service test required by Specification l 4.8.3.1d.; and
f. At least once per REFUELING INTERVAL, during shutdown, by giving l performance discharge tests of battery capacity to any battery that shows l signs of degradation or has reached 85% of the service life expected for the application. Degradation is indicated when the battery capacity drops more than 10'. of rated capacity from its average on previous performance tests, or is below 90% of the manufacturer's rating.
  • The resistance of cell-to-cell connecting cables does not have to be included.

D O

DIABLO CANYON - UNITS 1 & 2 3/4 8-16

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