Text

Amends 44 & 43 to Licenses DPR-80 & DPR-82,respectively, Changing Diesel Generator Allowed Outage Time from 72 H to 7 Days
	ML19327A788
Person / Time
Site:	Diablo Canyon
Issue date:	10/04/1989
From:	Knighton G; Office of Nuclear Reactor Regulation
To:	;
Shared Package
ML19327A789	List: ML19327A788; ML19327A793;
References
	NUDOCS 8910180117
	Download: ML19327A788 (11)
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UNITED STATES -

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WASHING TON, D. C. 20555

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PACIFIC GAS AND ELECTRIC COMPANY

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s DIABLO CANYON NUCLEAR POWER PLANTi UNIT 1

.l DOCKET-NO. 50-275 A_MENDMENT TO FACILITY OPERATING LICENSE Amendment No. 44 1

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= License No. DPR-80 i

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The Nuclear Regulatory Comission (the Comission). has found that:

A.

The-application for amendment by Pacific Gas & Electric Company If (thelicensee),datedMay 12, 1989, as supplemented by L

letters dated May ll, July 3, July 18, and September 5,1989

. complies with the standards and requirements of the Atomic Energy J

Act of -1954, as amended (the Act), and the Comission's regulations set forth in 10 CFR Chapter I; B.

The facility will operate ir. conformity with the application the provisions of-the Act, and the regulations of the Comission; C.-

There is' reasonable assurance (1) that the activities authorized-by this amendment can be conducted without endangering the health-

.and safety of the public, and (ii) that such activities will be conducted.in compliance with the Comission's regulations;.

D.

The issuance of this amendment will not be inimical to the common defense and security or to the health and-safety of the public; and' E.

The issuance of this amendment is in accordance with 10 CFR Part 51 of the Comission's regulations and all applicable requirements have 1

been satisfied.

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8910180117 891004 PDR ADOCK 05000275 P

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Accordingly, the license is amended by changes to the Technical i

Specifications as indicated in the attachment to this license amendment, and paragraph 2.C.(2) of Facility Operating License No. DPR-80 is hereby amended to read as follows:

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. I (2) Technical Specifications

' l The Technical Specifications contained in Appendix A and the-Environmental Protection Plan contained in Appendix B, as revised i

through Amendment No.44, are hereby incorporated in the license.

Pacific. Gas.& Electric Company shall operate the facility in accordance with the Technical. Specifications and the Environmental

Protection Plan; except where otherwise stated in specific license conditions.-

3.

This license amendment becomes effective-at the date of.its issuance.

FOR THE NUCLEAR REGULATORY COMMISSION i

d eorge W/ nighton.g rector Project Directorate V Division of Reactor Projects - III, IV, V and Special Projects l

Office of. Nuclear Reactor Regulation l

Attachment:

j Changes to the Technical

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Specifications.

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Date of Issuance: October 4, 1989 I-5 4

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UNITED STATES

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DIABLO CANYON NUCLEAR POWER: PLANT. UNIT 2

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p0CKETNO.50-323

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AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 43 License No. DPR-82 l '.

The Nuclear Regulatory Comission (the Comission) has found that:

A.

The application for amendment by Pacific Gas & Electric Company

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i (the. licensee),datedMay 12, 1989,-as supplemented by letters dated May 11, July 3, July 18, and September 5,1989 u

complies with the standards and requirements of the Atomic Energy E

Act of 1954, as amended (the Act), and the Comission's regulations set forth in 10:CFR-Chapter I; B.

The faci 11ty will operate in conformity with the application, the provisions of the Act, and the regulations of the Comission; C.

There is reasonable-assurance (1) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted'in compliance with the Comission's regulations; D.

The issuance of this amendment will not be inimical to the comon defense and security or to the health and safety of the public; J

and E.

The issuance of this amendment is in'accordance with 10 CFR Part 51 of the Comission's regulations and all applicable requirements have t

been satisfied.

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Accordingly, the 1icense is amended by changes to the Technical J

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Specifications, as indicated in the attachment to this license amendment,'and-paragraph 2.C.(2) of Facility Operating License 4

No. DPR-82 is hereby amended to read as follows:

'(2) Technical Specifications The Technical Specifications contained in Appendix A and the Environmental Protection Plan contained in Appendix B, as revised i

through Amendment No.43, are hereby incorporated in the license..

Pacific Gas & Electric Company shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan, except where otherwise stated in specific license conditions..

- 3.

This license amendment becomes effective at the date of its issuance..

FOR THE NUCLEAR REGULA ORY COMMISSION

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George y Knighto irector Project Directorate V Division of Reactor Projects - III,

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IV, Y and Special Projects Office of-Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance: October 4, 1989 i ;

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ATTACHMENT TO LICENSE AMENDMENT NOS. 44 AND 43 l

f FACILITY OPERATING LICENSE NOS. DPR-80 and DPR-82 DOCKET N05. 50-275 AND 50-323

- Replace the following pages of the Appendix "A" Technical Specifications with the attached pages. The revised pages are identified by Amendment number and contain vertical lines indicating the areas of change. Overleaf pages are i

L also included, as appropriate, Remove Page Insert Page-1 3/4 8-1 3/4 8-1 3/4 8-2 3/4 8-2 3/4 8-3 3/4 8-3 3/4 8-4 3/4 8-4 B 3/4 8-1 B 3/4 8-1 B 3/4 8-2 B 3/4 8-2 l

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3/4.8' ELECTRICAL' POWER SYSTEMS 3/4.8.1' A.C.-SOURCES OPERATING l

L_IMITING CONDITION FOR OPERATION

3. 8.1.1 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

t a.

Two independent circuits (one with delayed access) between the offsite transmission network and the Onsite Class 1E Distribution System, and b;

Three separate and independent diesel generators,* each with:

1.

A separate engine-mounted fuel tank containing a minimum volume-of 200 gallons of fuel, and l

2.

Two supply trains of the Diesel Fuel Oil' Storage and Transfer p

System with a ccmbined storage of 31,023 gallons of fuel for one Li unit operation and 52,046 gallons of fuel for two unit operation,

' APPLICABILITY:

MODES 1, 2, 3, and 4.

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' ACTION:

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L a.

With one offsite circuit of the above required A.C. electrical power p

sources inoperable, demonstrate the OPERABILITY of the remaining A.C.

L sources by performing Specification 4.8.1.1.la. within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least-once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter.

If each of the diesel generators have not been successfully tested ~within the past 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months demonstrate its OPERABILITY by performing Specification 4.8.1.1.2a.2) separately for each such diesel generator within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

Restore the offsite L

H circuit to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the j

following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

i b.

With a diesel generator of. the above required A.C. electrical power 1

sources inoperable, demonstrate the OPERABILITY of the A.C. offsite sources by performing Specification 4.8.1.1.la within I hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; and if the diesel generator became inoperable due to any cause other than preventive maintenance or

For a five diesel generator configuration, OPERABILITY of the third (common) l diesel generator shall include the capability of functioning as a power source for the required unit upon automatic demand from that unit.

DIABLO CAN' UN - UNITS 1 & 2 3/4 8-1 Amendment Nos.44 and 43

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' ELECTRICAL' POWER SYSTEMS-i-

i LIMITING CONDITION FOR OPERATION TACTION-(Continued) testing, demonstrate the OPERABILITY of the remainin generators by performing Specification 4.8.1.1.2a.2)g OPERABLE diesel within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months *;

s restore the diesel generator to OPERABLE status within 7 days ** or be l.

in at least HOT STANDBY within the-next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN I

within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

_ ith one offsite circuit and one diesel generator of the _ above W

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. required A.C. electrical power sources inoperable, demonstrate the l

OPERABILITY'of the remaining A.C. sources by performing Specifica-tion 4.8.1.1.la. within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months there-

'after; and if the diesel generator became inoperable due _to any cause other than preventive maintenance or testing, demonstrate the OPER-l ABILITY of the remaining OPERABLE diesel generators by performing Specification 4.8.1.1.2a.2) within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ; restore at least one of the inoperable sources to OPERABLE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or be in at l

least HOT: STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTOOWN within l-the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .~

Restore the other A.C. power source (offsite circuit or diesel generator) to OPERABLE-status in accordance with ACTION a, cr b., as appropriate with the time requirement of that ACTION statement based on the time of initial loss of the remaining inoperable A.C. power source.

A successful test of diesel OPERABILITY per Specification.4.8.1.1.2a.2) performed under this ACTION statement for OPERABLE diesels or a restored to OPERABLE diesel satisfies the diesel generator test requirement of ACTION a. or b.

d..

With one diesel generator inoperable in addition to ACTION b or c.

above verify that:

1.

All required systems, subsystems, trains, components.and devices that depend on the remaining OPERABLE diesel generators as a source of emergency power are also OPERABLE, and 2.

When in MODE.1, 2, or 3 that at least'two auxiliary feedwater pumps are OPERABLE.

i If these conditions are not satisfied within 2 ho"~ be in at least j

-HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD 9WN within the i

.following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

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This test is required to be completed regardless of when the inoperable diesel i

generator is restored to operability.

- For a five diesel generator configuration, the inoperable diesel generator

-shall be returned to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months .

However, once per 1

calendar year, the third (common) diesel generator may be inoperable for up to i

7 days for preplanned preventive maintenance and testing provided one unit is l

in Mode-5 or 6 and the other four aiesel generators are OPERABLE.

j Surveillance Requirements 4.8.1.1 la and 4.8.1.1.2a.4 shall be performed within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months prior to removal of Diesel Generator 3 from service.

During i

the 7 day period the remaining four diesel generators shall be verified OPERABLE at least once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months (in addition to any testing required by i

Table 4.8-1).

In the event these conditic.7s are not met, the unit in Mode 1, 2, 3, or 4 will be placed in HOT SHUTDOWN within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

The provisions of Technical Specification 3.0.4 do not apply.

DIABLO CANYON - UNITS 1 & 2 3/4 8-2 Amendment Nos.44 and 43 i

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' ELi'CTRICAL POWER SYSTEMS-SURVEILLANCE REQUIREMENTS

.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 deys by' verifying correct breaker alignments, indicated power availability, and b.

Demonstrated OPERABLE at least once per 18 months during shutdown by:

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 at least 900 rpm in less than or equal to 10 seconds.

The generator voltage and frequency shall be 4160 t 420 volts and 60 1.2 Hz within 13 seconds after the start signal.

The die. 1 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 c)

A' Safety Injection actuation test signal by itself.

For a five diesel, generator configuration, tests of Diesel Generator 3 to l

satisfy the frequency specified in Table 4.8-1 and in Surveillance Requirement 4.8.1.1.2b for one unit may be counted in determining whether the frequency specified in Table 4.8-1 and in Surveillance Requirement 4.8.1.1.2b for the other unit is satisfied.

Unit-specific portions of this Surveillance Requirement for Diesel Generator 3 shall be performed on an alternating schedule with signals from Units I and 2.

- 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 proc?dures (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. 44 and 43 i

,7 ELECTRICAL POWER SYSTEMS i

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.

i power to.the associated emergency busses," and 5)

Verifying the diesel engine protective relay trip cutout switch is returned to the cutout position following each diesel generator o

test.

b.

At least once per 18 months during shutdown **, by:

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 1 420 volts and frequency at 60 1 3 Hz; 4)

Verifying-the generator capability to reject a load of greater than or equal to 2484 kW without tripping.

The generator voltage shall not 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 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 1 420 volts and 60 1 1.2 Hz during this test.

For a five diesel _ generator configuration, this may be the associated bus l

in the other unit if that unit is in MODE 1, 2, 3 or 4.

- For a five diesel generator configuration, these surveillance requirements l

can be performed on the third (common) diesel generator with only one unit shutdown.

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DIABLO CAN"N - UNITS 1 & 2 3/4 8-4

' Amendment Nos.44 and 43

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~ /4'.8' ELECTRICAL POWER SYSTEMS 3

BASES 3/4.8.1, 3/4.8.2, and 3/4.8.3 A.C. SOURCES, D.C. SOURCES, and ONSITE POWER t

f DISTRIBUTION

-The OPERABILITY of the A.C. and D.C power sources and associated distribution systems during operation ensures that sufficient power will be

.available to supply the safety-related equipment required for:

(1) the safe i

shutdown of the facility, and (2) the mitigation and control of accident conditions within the facility.

The minimum specified independent and f

redundant A.C. and D.C. power sources and distribution systems satisfy the requirements of General Design Criterion 17 of Appendix A to 10 CFR Part 50.

I The ACTION requirements specified for the levels of degradation of the l

power sources provide restriction upon continued facility operation commensurate j

with the level of degradation.

The OPERABILITY of the power sources is consist-ent with,the initial condition assumptions of the safety analyses and is based upon maintaining sufficient redundancy of the onsite A.C. and D.C. power sources l

and associated distribution systems CPERABLE during accident conditions coinci-1 dent with an assumed loss-of-offsite power and single failure of one onsite A.C. source.

The A.C. and D.C. source allowable out-of-service times are based on Regulatory Guide 1.93, " Availability of Electrical-Power Sources,"

December 1974 except for the allowed outage time associated with Action Statement b, of Specification-3.8.1.1.

This allowed outage time was changed to be consistent with the recommendation of Diablo Canyon Power Plant Diesel l

Generator Allowed Outage Time Study, May 1989.

When one diesel generator is inoperable, there is an additional ACTION requirement to verify that all j

required systems, subsystems, trains, components and devices, that depend on the remaining OPERABLE diesel generators as.a source of emergency power, are 1

also OPERABLE, and that at least two auxiliary feedwater pumps are OPERABLE.

l This requirement is intended to provide assurance that a loss-of-offsite power event will not result in a complete loss of safety function of critical systems during the period one of the diesel generators is inoperable.

The footnote to Action Statement b. allows the third (common) diesel generator to be-inoperable l

tor up to 7 days for preplanned preventive maintenance and testing provided one unit is in Mode 5 or 6.

Compensatory measures are required including verification that the remaining diesel generators are OPERABLE.

The term, verify, as used in both of these contexts means to administratively check by examining logs or other

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information to determine if certain components are out-of-service for main-L tenance or other reasons.

It does not mean to perform the surveillance require-L -

ments needed to demonstrate the OPERABILITY of the component.

The OPERABILITY of the minimum specified A.C. and D.C. power sources and

' associated distribution systems during shutdown and refuelinq ensures that:

(1) the facility can be maintained in the shutdown or' refueling condition for extended time periods, and (2) sufficient instrumentation and control capability is available for monitoring and maintaining the facility status.

The design of the 125-volt D.C. distribution system is such that a battery can have associated with it a full capacity charger powered from it associated 480-volt vital bus or an alternate full capacity charger powered from another 480-volt vital bus.

Technical Specification 3.8.2.1 ACTION c. limits operation in the latter configuration to 14 days.

Technical Specification 3.8.3.1 re-quires either charger be OPERABLE.

The Surveillance Requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory DIABLO CANYON - UNITS 1 & 2 B 3/4 8-1 Amendment Nos. 44 and 43

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-ELECTRICAL POWER SYSTEMS BASES-

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A.C. SOURCES, D.C. SOURCES, and ONSITE POWER DISTRIBUTION (Continued)

Guides 1.9, " Selection of Diesel Generator Set Capacity for Standby Power Supplies," March 10, 1971, 1.108, " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977, where applicable,.and 1.137 " Fuel Oil Systems for Standby Diesel Generators," Revision 1, October 1979, where applicable.

For the five. diesel generator configuration, the third (common) diesel-generator is designed to respond to a Safety Injection Signal from either Unit 1 or Unit 2.

If the capability to respond to a Safety Injection Signal from one unit is maintained

'during surveillance testing on the other unit, then the third (common) diesel.

generator.shall be considered to be OPERABLE for that unit.

-The Surveillance Requirements for demonstrating the OPERABILITY of the batteries are based on the recommendations of Regulatory Guide 1.129, " Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants,'! February 1978, and IEEE Std 450-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Stations and' Substations."

Verifying average electrolyte temperature above the minimum for which the batte'ry was sized, total battery terminal voltage onfloat charge, connection resistance values and the' performance of battery service and discharge tests ensures the effectiveness of the charging system, the ability to handle high discharge rates and compares the battery capacity at that time with the rated

capacity, l

Table 4.8-3 specifies the normal limits for each designated pilot cell and each connected cell.for electrolyte level, float voltage and specific gravity.

The limits ~for the designated pilot cells float voltage and specific gravity, greater than 2.13 volts and 0.015 below the manufacturer's full charge specific gravity or a battery charger current that had stabilized at a low value, is characteristic of a charged cell with adequate capacity.

The normal limits for each connected cell for float voltage and specific gravity, greater H

than 2.13 volts and not more than 0.020 below the manufacturer's full charge specific gravity with ar, average specific gravity of all the connected cells not more than 0.010 below the manufacturer's full charge specific gravity, ensures the OPERABILITY and capability of the battery.

Operation with a battery cell's parameter outside the normal limit but within the allowable value specified in Table 4.8-3 is permitted for up to

'7 days.

During this 7-day period:

(1) the allowable values for electrolyte level ensures no physical damage to the plates with an adequate electron transfer capability; (2) the allowable value for the average specific gravity of all the cells, not more than 0.020 below the manufacturer's recommended full

. charge specific gravity ensures that the decrease in rating will be less than the safety margin provided in sizing; (3) the allowable value for an individual

)

cell's specific gravity ensures that an individual cell's specific gravity l

1 DIABLO CANYON - UNITS 1 & 2 B 3/4 8-2 Amendment Nos.44 and 43

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ML19327A788

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