Text

Amends 59 & 48 to Licenses NPF-10 & NPF-15,respectively, Reducing Frequency of Emergency Diesel Generator (EDG) Fast Starts,Revising Diesel Fuel Oil Surveillance & Reducing Number of EDG Tests
	ML20212R628
Person / Time
Site:	San Onofre
Issue date:	04/09/1987
From:	Rood H; Office of Nuclear Reactor Regulation
To:	;
Shared Package
ML20212R630	List: ML20212R628; ML20212R648;
References
	TAC-54698, TAC-54699, TAC-61516, TAC-61517, NUDOCS 8704270286
	Download: ML20212R628 (30)
	v • d • e

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rarg'e UNITED STATES

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t NUCLEAR REGULATORY COMMISSION i

,I wAsmNGTON, D. C. 20555

s SOUTHERN CALIFORNIA EDISON COMPANY SAN DIEGO GAS AND ELECTRIC COMPANY THE CITY OF RIVERSIDE, CALIFORNIA 1

THE CITY OF ANAHEIM, CALIFORNIA DOCKET NO. 50-361 SAN ONOFRE NUCLEAR GENERATING STATION, UNIT 2 AFENDMENT TO FACILITY OPERATING LICENSE Amendment No. 59 License No. NPF-10 1.

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

A.

The applications for amendment to the license for San Onofre Nuclear Generating Station, Unit 2 (the facility) filed by the Southern 4

California Edison Company (SCE) on behalf of itself and San Diego Gas and Electric Company,)The Citf of Riverside and The City of Anaheim, California (licensees dated March 17, June 13, and September 30, 1986 comply with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act) and the Comission's regulations as set forth in 10 CFR Chapter I; B.

The facility will operate in conformity with the applications, as amended, the provisions of the Act, and the regulations of the Comission; C.

There is reasonable assurance:

(1)thattheactivitiesauthorized 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 set forth in 10 CFR Chapter I; D.

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

The issuance of this amendmer accordance with 10 CFR Part 51 of the Comission's regulations anu all applicable requirements have been satisfied.

8704270286 870409 DR ADOCK 0500 1

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2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this amendment and Paragraph 2.C(2) of Facility Operating License No. NPF-10 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 thrcugh Amendment No. 59, are hereby incorporated in the license.

SCE shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.

3.

The changes in Technical Specifications are to become effective within 30 days of issuance of the amendment.

In the period between issuance of the amendment and the effective date of the new Technical Specifications, the licensees shall adhere to the Technical Specifications existing at the time. The period of time during change over shall be minimized.

4.

This license amendment is effective as of the date of its issuance.

FOR THE NUCLEAR REGULATORY COMMISSION M

is Harry Rood, Senior Project Manager PWR Project Directorate No. 7 Division of PWR Licensing-B

Attachment:

Charoes to the Technical Specifications Date of Issuance: April 9,1987 1

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April 9,1987 ATTACHMENT TO LICENSE AMENDMENT NO. 59 FACILITY OPERATING LICENSE N0. NPF-10 DOCKET NO. 50-361 Replace the following pages of the Appendix A Technical Specifications with the enclosed pages. The revised pages are identified by Amendment number and contain vertical lines indicating the area of change. Also_to be replaced 4

are the following overleaf pages to the amended pages.

Amendment Pages Overleaf Pages 3/4 8-1 3/4 8-la 3/4 8-2 3/4 8-3 3/4 8-4 3/4 8-5 3/4 8-6 3/4 8-7 3/4 8-8 B 3/4 8-2 B 3/4 8-1 6

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3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES.

OPERATING LIMITING CONDITIONS FOR OPERATION 3.8.1.1 As a 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 IE distribution system, and b.

Two separate and independent diesel generators, each with:

1.

A day fuel tank containing a minimum volume of 325 gallons of fuel, and 2.

A separate fuel storage system containing a minimum volume of 47,000 gallons of fuel, and 3.

A separate fuel transfer pump.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

al. With an offsite circuit of the above required A.C. electrical power l

sources inoperable, demonstrate the OPERABILITY of the remaining A.C. offsite source by performing Surveillance Requirement 4.8.1.1.1.a 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; and Surveil-lance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months unless the diesel generator is already operating.* Restore at least two offsite cir-cuits and two diesel generators 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 following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

a2. With a diesel generator of the above required A3C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. offsite sources by performing Surveillance Requirement 4.8.1.1.1.a 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; and Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for the remaining diesel generator unless the diesel generator is already operating.* Restore at least two offsite circuits and two diesel generators 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 following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

b.

With one offsite circuit and one diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. offsite sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; and Surveillance Requirement 4.8.1.1.2.a.4

Note: A Diesel Generator is classified as "already operating" if the generator voltage and frequency are 4360 1 436 volts and 60 1 1.2 Hz.

SAN ONOFRE - UNIT 2 3/4 8-1 AMENDMENT N0. 59

i ELECTRICAL POWER SYSTEM SURVEILLANCE REQUIREMENTS , 4.8.1.1.1 -Each of the above required independent circuits between the offsite transmission network and the onsite Class IE distribution system shall be:

Determined OPERABLE at least once per 7 days by verifying correct a.

breaker alignments and indicated power availability.

If tie breakers 3A0416 or 3A0603 are used to provide a. source of power, the following busses are required.

for 3A0416 for 3A0603 3A04 3A06 3B04 3806 3D1 302 b.

Demonstrated OPERABLE at least once per 18 months during shutdown by transferring (manually and automatically) unit power from the normal offsite power source ~ to the alternate offsite power source.

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:

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

STAGGERED TEST BASIS by:

1.

Verifying the fuel level in the day fuel tank, 2.

Verifying the fuel level in the fuel storage tank, 3.

Verifying the fuel transfer pump can be started and transfers fuel from the storage system to the day tank, 4.

Verifying the diesel generator starts from. ambient conditions and accelerates to at least 900 rpm.* The generator voltage and frequency shall be 4360 1 436 volts and 60 i 1.2 Hz after reaching 900 rpm.

The diesel generator shall be started for this test by using one of the following signals:

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A diesel generator start (in less than 10 seconds) from ambient conditions j

shall be performed at least once per 184 days.

All other engine starts for i

the purpose of this surveillance testing may be preceded by an engine prelube i

period and/or other warmup procedures recommended by the manufacturer so that mechanical stress and wear on the diesel engine is minimized.

SAN ON0FRE - UNIT 2 3/4 8-2 AMEN 0 MENT NO. 59

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ELECTRICAL POWER SYSTEM SURVEILLANCE REQUIREMENTS (Continued) a)

Manual b)

Simulated loss of offsite power by itself c)

Simulated loss of offsite power in conjunction with an ESF actuation test signal 5.

Verifying the generator is synchronized, loaded to greater than or equal to 4700 kw in less than or equal to 77 seconds *,.and operates with a load-greater than or equal to 4700 kW for at least an additional 60 minutes, and 6.

Verifying the diesel generator is aligned to provide standby power to the associated emergency busses.

b.

At least once per 31 days and after each operation of the diesel where the period of operation was greater than or equal to I hour by checking for and removing accumulated water from the day tank.

c.1. At least once per 92 days and from new fuel oil prior to addition to the storage tanks by verifying that a sample obtained in accordance with ASTM-D4057-81 has a water and sediment content of less than or equal to.05 volume percent and a kinematic viscosity 9 40*C of greater than or equal to 1.9 but less than or equal to 4.1 when tested in accordance with ASTM-D975-81.

2.

At least once every 92 days by obtaining a sample of fuel oil in accordance with ASTM-D4057-81 and verifying that particulate contamination is less than 10mg/ liter when checked in accordance i.

with ASTM-D2276-83, Method A.

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d.

At least once per 18 months by:

1.

Subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturer's i

recommendations for this class of standby service.

2.

Verifying the generator capability to reject a load of greater than or equal to 655.7 kW while maintaining voltage at 4360

436 volts and frequency at 60 i 5.0 Hz.

i 3.

Verifying the generator capability to reject a load of 4700 kW 4

without tripping. The generator voltage shall not exceed 5450 volts during and following the load rejection.

"All engine starts for the purpose of this surveillance testing may be preceeded by an engine prelube period and/or other warmup procedures recommended by the manufacturer so that mechanical stress and wear on the diesel engine is minimized.

SAN ONOFRE - UNIT 2 3/4 8-3 AMENDMENT N0. 59

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ELECTRICAL POWER SYSTEM SURVEILLANCE REQUIREMENTS (Continued) 4.

Simulating a loss of offsite power by itself, and:

a)

Verifying de-energization of the emergency busses and load shedding from the emergency busses.

b)

Verifying the diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 10 seconds and operates for greater than or equal to 5 minutes while its generator is loaded with the permanently connected loads.

After energization, the steady statt voltage and frequency of the emergency busses shall be maintained at 4360 i 436 volts and 60

1.2 Hz during this test.

5.

Verifying that on an ESF test signal, without loss of offsite power, the diesel generator starts on the auto-start signal and operates on standby for greater than or equal to 5 minutes.

The steady state generator voltage and frequency shall be

-4360

436 volts ~and 60 i 1.2 Hz within 10 seconds after the auto-start signal; the generator voltage and frequency shall be i

maintained within these limits during this test.

6.

Deleted.

7.

Simulating a loss of offsite power in conjunction with an ESF test signal, and a)

Verifying de-energization of the emergency busses and load shedding from the emergency busses.

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b)

Verifying the diesel starts on the' auto-start signal, energizes the emergency busses with permanently connected loads within 10 seconds, energizes the auto connected emergency (accident) loads through the load sequence and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads.

After loading, the steady state voltage and frequency of the emergency busses shall be maintained at 4360 i 436 volts and 60 + 1.2/-0.3 Hz during this test.

c)

Verifying that all automatic diesel generator trips, except engine overspeed, generator differential and low-low lube oil pressure, are automatically bypassed.

' SAN ONOFRE - UNIT 2 3/4 8-4 AMENDMENT NO. 59-O

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w ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 8.

Verifying the diesel generator operates for a't least 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

During the first 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months of this test, the diesel generator i

shall be loaded to greater than or equal to 5170 kw and during the remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test, the diesel generator.shall be loaded to greater than or equal to 4700 kw. The generator voltage and frequency shall be 4360 1 436 volts and 60 i 1.2 Hz within 10 seconds after the start

signal; the steady state gener-ator voltage and frequency shall be maintained at 4360 1 436 volts and 60 + 1.2/-0.3 Hz for the first two hours of this test and 4360 i 436 volts and 60 i 1.2 Hz during the remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test.

Within 5 minutes ~after completing this 24 hour-test, perform Surveillance Requirement 4.8.1.1.2.d.4.b.

9.

Verifying that the auto-connected loads to each. diesel generator do not exceed 4700 kw.

10.

Verifying the diesel generator's capability to:

a)

Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated restoration of offsite power, b) Transfer its loads to the offsite power source, and c) Be restored to its standby status.

11.

Verifying that with the diesel generator operating in a test mode, connected to its bus, a simulated safety injection signal overrides the test mode by (1) returning the diesel generator to standby operation and (2) automatically energizes the emergency loads with offsite power.

12.

Verifying that each fuel transfer pump transfers fuel from each fuel storage tank to the day tank of each diesel via the installed cross connection lines.

13.

Verifying that the automatic load sequence timer is OPERABLE with the interval between each load block within i 10% of its design interval.

14.

Verifying that lockout relay K23 prevents diesel generator starting when the diesel generator is actuated.

"The engine start for the purpose of this surveillance test may be preceded by an engine prelube period and/or other warmup procedures recommended by the manufacturer so that mechanical stress and wear on the engine is minimized.

SAN ONOFRE - UNIT 2 3/4 8-5 AMENDMENT N0. 59'

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SURVEILLANCE REQUIREMENTS (Continued) i At least once per 10 years or after any modifications which could e.

affect diesel generator interdependence by starting the diesel generators simultaneously, during shutdown, and verifying that the diesel generators accelerate to at least 900 rpm in less than or.

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equal to 10 seconds.

f.

At least once per 10 years by:.

l 1.

Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solu-tion or the equivalent, and 2.

Performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND of the ASME Code at a test pressure equal to 110 percent of the system de-sign pressure.

4.8.1.1.3 Reports - All diesel generator failures, valid or non-valid, shall be reported to the Commission pursuant to Specification 6.9.1.

Reports of-l

' diesel generator failures shall include the information recommended in Regula-l tory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

If the number of failures in the last 100 valid tests (on a per nuclear ~ unit basis) is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position C.3.b of Regulatory I

Guide 1.108, Revision 1, August 1977.

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SAN ONOFRE - UNIT 2 3/4 8-6 AMENDMENT NO. 59 a

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TABLE 4.8-1 1

DIESEL GENERATOR TEST SCHEDULE Number of Failures In Last 20 Valid Tests.*

Test Frequency

<1 At least once per 31 days

>2 At least once per 7 days **

" Criteria for determining number of failures and number of valid tests shall be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, Revision 1, August 1977, where the number of tests and failures is determined on a per diesel generator basis.

- This test frequency shall be maintained until seven consecutive failure free demands have been performed and the number of failures in the last 20 valid demands has been reduced to one or less.

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l SAN ONOFRE - UNIT 2 3/4 8-7 AMENDMENT NO. 59

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ELECTRICAL POWER SYSTEMS AC SOURCES SHUT 00wN LIMITING CON 0! TION FOR OPERATION 3.8.1.2 As a minimum, the following AC electrical power sources shall be OPERABLE:

One circutt between the offsite transmission network and the onsite a.

Class 1E distribution system, and b.

One diesel generator with:

1.

Day fuel tanks containing a minimum volume of 325 gallons of

fuel, 2.

A fuel storage system containing a minimum volume of 37,600 gallons of fuel, and 3.

A fuel transfer pump.'

APPticAsttITY: MODES 5 and 6.

ACTION:

With less than the above minimum AC electrical power sources OPERABLE, 1 mediately suspend all operations involving CORE ALTERATIONS or positive reactivity changes and movement of irradiated fuel, or operation of the fuel hand 11ng machine with loads over the fuel storage pool. 'In addition, when in MODE 5 with the Reactor Coolant loops not ftiled, or in MODE 6 with the water level less than 23 feet above the reactor vessel flange, immediately initiate corrective action to restore the required sources to OPERABLE status as soon as possible.

SURVEi(LANCE REQUIREMENTS 4.8.1.2.1 'The above required circuit between the offsite transmission network and the onsite Class 1E d,tstributton system shall be determined OPERABLE at O

AMEN 0MENTN0.3d SAN ONOFRE - UNIT 2 3/4 8-8

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ELECTRICAL POWER SYSTEMS 3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1, 3/4.8.2, and 3/4.8.3 A.C. SOURCES, D.C. SOURCES and ONSITE POWER DISTRIBUTION SYSTEMS The OPERABILITY of the A.C. and D.C. power sources and associated distri-b'ution systems during operation ensures that sufficient power will be available to supply the safety related equipment required for 1) the safe shutdown of the facility and 2) the mitigation and control of accident conditions within the facility. The minimum specified independent and redundant A.C. and D.C.

power sources and distribution systems satisfy the requirements of General 8

Design Criteria 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the l'evels of degradation of the power sources provide restriction upon continued facility operation commen-surate with the level of degradation.

The OPERABILITY of the power sources are consistent with the initial condition assumptions of the safety analyses and are based upon maintaining at least one redundant set of onsite.A.C. and 0.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other 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. When one diesel generator is inoperable, there 3.

is an additional ACTION requirement to verif subsystems, trains, components and devices, y that all required systems, that depend on OPERABLE diesel generator as a source of emergency power, a.the remaining re also OPERABLE,

. and that the steam-driven auxiliary feedwater pump is OPERABLE.

This require-ment 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 term verify as used in this context means to administratively check by examining logs or other information to determine if certain components are out-of-service for maintenance or other reasons.

It does not mean to perform the surveillance requirements 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 refueling ensures that

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

The Surveillance Requirements verify the OPERABILITY of the required independent circuits between the offsite transmission network and the onsite Class IE distribution system.

Two independent circuits are required in Modes 1 through 4.

One source of power is supplied from Unit 2 itself and is normally provided through the Reserve Auxiliary Transformers (2XR1 and 2XR2).

If the Unit 2 main generator iso phase-bus links are removed, th'en the Unit Auxiliary Transformer 2XUl can be used iri place of 2XR1 and/or 2XR2.~ The second source.

of power is provided through the Unit 3 Reserve Auxiliary Transformers (3XR1 and

(-

3XR2) and/or, with the Unit 3 generator iso phase bus links removed, the Unit 3 Unit Auxiliary Transformer (3XU1).

SAN ONOFRE-UNIT 2 8 3/4 8-1 AMENDM NT NO. 34

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_m ELECTRICAL POWER SYSTEMS BASES A.C. SOURCES, D.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS (Continued)

The Surveillance Requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory

. Guides 1.9 " Selection of Diesel Generator Set Capacity for Standby Power

> Supplies," March 10, 1971, and 1.108 " Periodic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants,"

Revision 1, August 1977, and 1.137, " Fuel Oil Systems for Standby Diesel

' Generators," Revision 1, October 1979 and NRC generic letter 84-15.

Reg.

Guide 1.137 recommends testing of fuel oil samples in accordance with ASTM-D270-1975.

However, ASTM-D270-1975 and ASTM-0975-77 have been replaced by ASTM D4057-81 and ASTM D975-81, respectively, as the current versions of the standards in industry use. Also, the accelerated oxidation stability test

.(ASTM D2274-70) is replaced by a test for actual particulate contamination, ASTM D2276-83.

Additionally, Regulatory Guide 1.9 allows loading of the diesel generator to its 2000 hour0.0231 days 0.556 hours 0.00331 weeks 7.61e-4 months rating in an accident situation.

The full load, continuous operation rating for each diesel generator is 4700 kW, while the calculated accident loading in Modes 1 through 4 is 4000 kW. The largest anticipated load (including loads which are required to mitigate the consequences of a design basis accident or facilitate plant operation and maintenance) in Modes 5 and 6 is calculated to be less than 80% of the full rated capacity.

No 2000 hour0.0231 days 0.556 hours 0.00331 weeks 7.61e-4 months loading has been specified by the diesel generator manufacturer and, as a result the full loading rating of 4700 kW is conservatively established as the 2000 hour0.0231 days 0.556 hours 0.00331 weeks 7.61e-4 months rating.

Diesel frequency droop restrictions are established due to HPSI flow rate considerations.

The Surveillance Requirement for demonstrating the OPERABILITY of the Station 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 battery 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.

SAN ONOFRE - UNIT 2 B 3/4 8-2 AMENDMENT NO. 59

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UNITED STATES 8

NUCLEAR REGULATORY COMMISSION l

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SOUTHERN CALIFORNIA EDIS0N COMPANY SAN DIEGO GAS AND ELECTRIC COMPANY THE CITY OF RIVERSIDE, CALIFORNIA THE CITY OF ANAHEIM, CALIFORNIA DOCKET NO. 50-362 SAN ONOFRE NUCLEAR GENERATING STATION, UNIT 3 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 48 License No. NPF-15 1.

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

A.

The applications for amendment to the license for San Onofre Nuclear Generating Station Unit 3 (the facility) filed by the Southern California Edison Company (SCE) on behalf of itself and San Diego Gas and Electric Company, The City of Riverside and The City of Anaheim, California (licensees) dated March 17. June 13, and September 30, 1986 comply with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act) and the Comission's regulations as set forth in 10 CFR Chapter I; B.

The facility will operate in confonnity with the applications, as amended, the provisions of the Act, and the regulations of the Ccmission; C.

There is reasonable assu.ance:

(1) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, t..d (ii) that such activities will be conducted in compliance with the Comnission's regulations set forth in 10 CFR Chapter I; D.

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

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

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2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this amendment and Paragraph 2.C(2) of Facility Operating License No. NPF-15 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

.through Amendment No. 48, are hereby incorporated in the license.

SCE shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.

3.

The changes in Technical Specifications are te become effective within 30 days of issuance of the amendment.

In the period between. issuance of the amendment and the effective date of the new Technical Specifications, the i

licensees shall adhere toithe Technical Specifications. existing at the time. The period of time during change over shall be minimized.

4.

This license amendment is effective as of the date of.its issuance.

FOR THE NUCLEAR REGULATORY COMMISSION r$ML)

Ov Harry Ro d, Senior Project Manager PWR Project Directorate No. 7 Division of PWR Licensing-B

Attachment:

Changes to the Technical Specifications Date of Issuance: April 9,1987

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% ATTACHMENT TO LICENSE AMENDMENT NO. 48 FACILITY OPERATING LICENSE N0. NPF-!E DOCKET NO. 50-362 Replace.the following pages of the Appendix A Technical Specifications with the enclosed pages. The revised pages are identified by Amendment number and-contain vertical lines indicating the area of change. Also to be replaced are the following overleaf pages to the amended pages.

Amendment Page Overleaf Page 3/4 8-1 3/4 8-la 3/4 8-2 3/4 8-3 3/4 8-4 3/4 8-5 3/4 8-6 3/4 8-7 3/4 8-8 8 3/4 8-2 B 3/4 8-1 I

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w; 3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES OPERATING LIMITING CONDITIONS FOR OPERATION 3.8.1.1 OPERABLE:As a minimum, the following A.C. electrical power sources shall 'be Two physically independent circuits between the offsite transmission a.

network and the onsite Class IE distribution system, and b.

Two separate and independent diesel generators, each with:

1.

A day fuel tank containing a minimum volume of 325 gallons of fuel, and 2.

A separate fuel storage system containing a minimum volume.of 47,000 gallons of fuel, and 3.

A separate fuel transfer pump.

APPLICABILITY:

MODES 1, 2, 3 and 4.

ACTION:

al.

With an offsite circuit of the above required A.C. electrical power sources inoperable demonstrate the OPERABILITY of the remaining A.C. offsite source, by performing Surveillance Requirement 4.8.1.1.1.a 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; and Surveil-lance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months unless the diesel generator is already operating.*

Restore at least~two offsite cir-cuits and two diesel generators 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 STANOBY 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 following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

a2.

With a diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C.

offsite sources by performing Surveillance Requirement 4.8.1.1.1.a 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; and Surveil-lance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for the remaining diesel generator unless the diesel generator is already operating.*

Restore at least two offsite circuits and two diesel generators 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 NOT STANDBY wi the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

Note:

tnr voltage and frequency area Diesel Generator is classified as "already oper 4360

436 volts and 60

1.2 Hz.

SAN ON0FRE-UNIT 3 3/4 8-1 AMENDMENT N0. 48

__ a.

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m.._.-._ c

.....m._2.

.~

g. 4 e

ELECTRICAL POWER SYSTEMS ACTION (Continued) b.

With one offsite circuit and one diesel generator of the above re-quired A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. offsite sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; and Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months unless the diesel generator is already operating.*

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

Restore at least two offsite circuits and two diesel generators to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time of the initial loss 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 following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

c.

With one diesel generator inoperable, in addition to ACTION a or b above, verify that; 1.

All required systems, subsystems,' trains, components and

~

devices that depend on the remaining OPERABLE diesel generator as a source of emergency power are also OPERABLE, and 2.

When in MODE 1, 2 or 3, the steam-driven auxiliary feed pump is OPERABLE.

If these conditions are not satisfied within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 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 following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

I d.

With two of the above required offsite A.C. circuits inoperable,

&monstrate the OPERABILITY of two diesel generators by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months unless the diesel generators are already operating.* Restore at least one of tne inoperable offsite sources to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 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 . With only one offsite source restored, restore at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time of the initial loss 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,following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months , e.

With two of the above required diesel generators inoperable, demon-strate the OPERABILITY of two offsite A.C. circuits by performing Surveillance Requirement 4.8.1.1.1.a 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.

Restore at least one of the inoperable diesel generators to OPERABLE status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 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 following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months ., Restore at least two diesel generators to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of the initial loss 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 following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

i I

Note: A Diesel Generator is classified as "already operating" if the generator voltage and frequency are 4360 i 436 volts and 60 i 1.2 Hz.

SAN ONOFRE-UNIT 3 3/4 8-la AMENDMENT NO. 48

n ELECTRICAL POWER SYSTEMS ACTION (Continued)

SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and each Class IE 4 kV Bus shall be:

a.

Determined OPERABLE at least once per 7 days by verifying correct breaker alignments and indicated power availablity.

If tie breakers 2A0416 or 2A0603 are used to provide a source of power, the following busses are required.

for 2A0416 for 2A0603 2A04 2A06 2004 2B06 201 2D2 b.

Demonstrated OPERABLE at least once per 18 months during shutdown by transferring (manually and automatically) unit power from the normal offsite power source to the alternate offsite power source.

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:

a.

In accordance with the frequency specified in Table 4.8-l'on a STAGGERED TEST BASIS by:

1.

Verifying,the fuel level in the day fuel tank, 2.

Verifying the fuel level in the fuel storage tank, 3.

Verifying the fuel transfer pump can be started and transfers fuel from the storage system to the day tank, 4.

Verifying the diesel generator starts from ambient conditions and accelerates to at least 900 rpm.* The generator voltage and frequency shall be 4360

436 volts and 60 1 1.2 Hz after reaching 900 rpm.

The diesel generator shall be started for' this test by using the manual start signals:

a)

Manual b)

Simulated loss of offsite power by itself c)

Simulated loss of offsite power in conjunction with an ESF actuation test signal

A diesel generator start (in less than 10 seconds) from ambient conditions shall be performed at least once per 184 days.

All other engine starts for the purpose of this surveillance testing may be preceded by an engine prelube period and/or other warmup procedures recommended by the manufacturer so that mechanical stress and wear on the diesel engine is minimized.

SAN ONOFRE-UNIT 3 3/4 8-2 Amendment No. 48

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3 ELECTRICAL POWER SYSTEM SURVEILLANCE REQUIREMENTS (Continued) 5.

Verifying the generator is synchronized, loaded to greater than or equal to 4700 kW in less than or equal to 77 seconds *, and operates with a load greater than or equal to 4700 kW for at least an additional 60 minutes, and.

-6.

Verifying the diesel generator is aligned to provide standby power to the associated emergency busses.

b.

At least once per 31 days and after each operation'of the diesel where the period of operation was greater than or equal to 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months by checking for and removing accumulated water from the day tank.

c.1. At least once per 92 days and from new fuel prior to addition to i

t the storage tanks by verifying that a sample obtained in accordance with ASTM-D4057-81 has a water and sediment content of less than or equal to.05 volume percent and a kinematic viscosity 9 40*C of greater than or equal to 1.9 but less than or equal to 4.1' hen w

tested in accordance with ASTM-D975-81.

2. At least once every 92 days by obtaining a sample of fuel oil in accordance with ASTM-D4057-81 and verifying that particulate con-tamination is less than 10mg/ liter when checked in accordance with ASTM D2276-83, Method A.

d.

At least once per 18 months 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 the generator capability to reject a load of greater than or equal to 655.7 kW while maintaining voltage at 4360 1 436 volts and frequency at 60 1 5.0;Hz.

3.

Verifying the generator capability to reject a load of 4700 kW without tripping.

The generator voltage shall not exceed 5450 volts during and following the load rejection.

t

All engine starts for the purpose of this surveillance testing may be pre-ceded by an engine prelube period and/or other warmup procedures recommended by the manufacturer so that mechanical stress and wear on the diesel engine is minimized.

SAN ON0FRE-UNIT 3 3/4 8-3 Amendment No. 48

W. N w.~.a

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ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 4.

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

Verifying de-energization of the emergency busses and load shedding from the emergency busses.

b)

Verifying the diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 10 seconds and operates for greater than or equal to 5 minutes while its generator is loaded with the permanently connected loads.

After energization, the steady state voltage and frequency of the emergency busses shall be maintained at 4360 i 436 volts and 60 i 1.2 Hz during this test.

5.

Verifying that on an ESF test signal, without' loss of offsite power, the diesel generator starts on the auto-start signal and operates on standby for greater than or equal to 5 minutes.

The steady-state generator voltage and frequency shall be 4360 1 436 volts and 60 i 1.2 Hz within 10 seconds after the auto-start signal; the generator voltage and fregency shall be maintained within these limits during this tr.st.

6.

Deleted 7.

Simulating a loss of offsite power in conjunction with an ESF test signal, and a)

Verifying de-energization of the emergency busses and load shedding from the emergency busses.

b)

Verifying the diesel starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 10 seconds, energizes the auto-connected emergency (accident) loads through the load sequence and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads. After loading, the steady state voltage and frequency of the emergency busses shall be maintained at 4360 i 436 volts and 60 + 1.2/-0.3 Hz during this test, c)

Verifying that all automatic diesel generator trips, except engine overspeed, generator differential, and low-low lube oil pressure, are automatically bypassed.

SAN ON0FRE-UNIT 3 3/4 8-4 AMENDMENT NO. 48 1

p.w

._.:.__;.___..a

m...;.

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ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 8.

Verifying the diesel generator operates for at least 24. hours.

During the first 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months of this test, the diesel generator shall be loaded to greater than or equal to 5170 kw and during the remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test, the diesel generator shall be loaded to greater than or equal to 4700 kw. The generator voltage and frequency shall be 4360 i 436 volts and 60 i 1.2 Hz after the start

signal; the steady state generator voltage and frequency shall be maintained at 4360 i 436 volts and 60 + 1.2/

-0.3 Hz for the first 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months of this test and 4360 i 436 volts and 60 i 1.2 Hz during the remaini.ng 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test.

Within 5 minutes after completing this 24-hour test, perform Surveillance Requirement 4.8.1.1.2.d.4.b.

9.

Verifying that the auto-connected loads to.each diesel generator do not exceed 4700 kW.

10. Verifying the diesel generator's capability to:

a)

Synchronize with the offsite power source while the generator is loaded with its emergency loads upon a simulated restoration of offsite power, b)

Transfer its loads to the offsite power source, and c)

Be restored to its standby status.

11.

Verifying that with the diesel generator operating in a test mode, connected to its bus, a simulated safety injection signal overrides the test mode by (1) returning the diesel generator to standby operation and (2) automatically energizes the emergency loads with offsite power.

i 12.

Verifying that each fuel transfer pump transfers fuel from each fuel storage tank to the day tank of each diesel via the 1

installed cross connection lines.

j

13. Verifying that the automatic load sequence timer is OPERABLE with the interval between each load block within + 10% of its design interval.

~

14. Verifying that lockout relay K23 prevents diesel generator starting when the diesel generator is actuated.

The engine start for the purpose of this surveillance test may be preceded by an engine prelube period and/or other warmup procedures recommended by the manufacturer so that mechanical stress and wear on the engine is minimized.

SAN ONOFRE-UNIT 3 3/4 8-5 AMENDMENT NO. 48 l

a r.

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_,. a w..s.._. _..

_..2 q

B' ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) e.

At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting the diesel generators simultaneously, during shutdown, and verifying that the l

diesel generators accelerate to at least 900 rpm in less than or-equal to 10 seconds.

f.

At least once per 10 years by:

1.

Draining each fuel oil storage tank, removing the accumulated' sediment and cleaning the tank using a sodium hypochlorite solution or the equivalent, and 2.

Performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND of the ASME Code at a test pressure equal to 110 percent of the system design pressure.

4.8.1.1.3 Reports - All diesel generator failures, valid or non-valid, shall be reported to the Commission pursuant to Specification 6.9.1.

Fieports of diesel generator failures shall include the information recommenced in Regula-tory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

If the number of failures in the last 100 valid tests (on a per nuclear ~ unit basis) is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

b 9

SAN ONOFRE-UNIT 3 3/4 8-6 AMENDMENT NO. 48

p.

u.;.. _._.:.

._ _..~.

_..a_..-

m.;.m.-_.

TABLE 4.8-1 DIESEL GENERATOR TEST SCHEDULE Number of Failures In Last 20 Valid Tests.*

Test Frequency

< 1 At least once per 31 days

> 2 At least once per 7 days **

Criteria for determining number of failures and number of valid tests shall be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, Revision 1, August 1977, where the number of tests and failures.is determined on a per diesel generator basis.

- This test frequency shall be maintained until seven consecutive. failure free demands have been performed and the number of failures in the last 20 valid demands has been reduced to one or less.

SAN ONOFRE-UNIT 3 3/4 8-7 AMENDMENT NO. 48

}

V

=.....- -.

I ELECTRICAL PowCR SYSTEMS AC SOURCES i

SHUT 00wW LIMITING CONOTTION OR OPERATION 3.8.1.2 As a minimum, the following.AC e1ectrical power sources shall be OPERABLE:

a.

One circuit between the offstte transmission network and the onsite Class IE distribution system, and b.

One diesel generator with:

1.

Day fuel tanks containing a minimum volume of 325 gallons of

fue1, 2.

A fuel storage system contajning a mintmum volume of 37,600 gallons of fuel, and 3.

A fuel transfer pump.

APPliCABitTTY: MODES 5 and 6.

ACTION:

1 With less than the above minimum AC electrical power sources OPERABLE, immediately suspend all operations involving CORE ALTERATIONS or positive reactivity changes and movement of trradiated fuel, or operation of the fuel handling machine with loads over the fuel storage poo1. In 3ddition, when in MODE 5 with the Reactor Coolant loops not filled, or in MODE 6 with the water level less than 23 feet above the reactor vessel flange, immediately initiate corrective action to restore,the required sources to OPERABLE status as soon as possible.

SURVET(LANCE REOUTREMENTS 4. 8.1. 2.1 The above required circuit between the offsite transmission network and the onsite Class 1E distribution system shall be determined OPERABLE at O

SAN ONOFRE - UNIT 3 3/4 8-8 AMENDMENT NO. 27

a

u.. ~: -.

4 t

i i

i 3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1, 3/4.8.2, and 3/4.8.3 A.C. SOURCES, D.C. SOURCES and ONSITE POWER DISTRIBUTION SYSTEMS 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 1

shutdown of the facil.ity and 2) the mitigation and control of accident condi-

. tions within the facility.

The minimum specified independent and 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 50.

The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commen-surate with the level of degradation. The OPERABILITY of the power sources is consistent with the initial condition assumptions of the safety analyses and is based upon maintaining at least one redundant set of onsite A.C. and D.C.

power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of the other 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. When one diesel generator is inoperable, there is an additional ACTION requirement to verify that all required systems, subsystems, trains, components and devices, that, depend on the remaining OPERABLE diesel generator as a source of emergency powei, are also OPERABLE, and that the steam-driven auxiliary feedwater pump is OPERABLE. This require-

. ment 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 term verify as used in this context means to administrative 1y check by examining logs or other information to determine if certain components are out of service for maintenance or other reasons.

It does not mean to perform the surveillance requirements 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 sfiutdown and refueling ensures that

1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) suffidient instrumentation and control capability t

j is available for monitoring and maintaining the unit status.

1; The Surveillance Requirements verify the OPERABILITY of the required independent circuits between the offsite transmission network and the onsite Class IE distribution system.

Two independent circuits are required in Modes 1 l

through 4.

One source of power is supplied from Unit 3 itself and is normally provided through the Reserve Auxiliary Transformers (3XR1 and 3XR2).

If the Unit 3 main generator iso phase

bus links are removed, then the Unit Auxiliary Transformer 3XU1 can be used in place of 3XR1 and/or 3XR2. The second source of i

power is provided through the Unit 2 Reserve Auxiliary Transformers (2XR1 and 2XR2) and/or, with the Unit 2 generator iso phase bus links removed, the Unit 2 Unit Auxiliary Transformer (2XU1).

SAN ONOFRE-UNIT 3 B 3/4 8-1 AMEt;DMENT NO. 2.3

~ -. :

L :.

L J~~

. -l

s.

p ELECTRICAL POWER SYSTEMS ELECTRIC POWER SYSTEMS BASES A.C. SOURCES, D.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS (Continued)-

The Surveillance Requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory Guides 1.9 " Selection of Diesel Generator Set Capacity for Standby Power Sup-plies," March 10, 1971, and 1.108 " Periodic Testing of Diesel Generator Units used as Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977, and 1.137, " Fuel 011 Systems for Standby Diesel Generators, "Revi-sion 1, October 1979 and NRC Generic Letter 84-15.

Regulatory Guide 1.137 re-commends testing of fuel oil samples in accordance with ASTM-D270-1975.

How-1 ever, ASTM-D270-1975 and ASTM D975-77 have been replaced by ASTM 4057-81 and ASTM D975-81, respectively, as the current revision of the standards in in-i I

dustry use. Also, the accelerated oxidation stability test (ASTM D2274-70) is replaced by a test for actual particulate contamination, ASTM D2276-83.

j Additionally, Regulatory Guide 1.9 allows loading of the diesel generator i

to its 2000 hour0.0231 days 0.556 hours 0.00331 weeks 7.61e-4 months rating in an accident situation. The full load, continuous operation rating for each diesel generator is 4700 kw, while the calculated a

accident loading in Modes 1 through 4 is 4000 kW. The largest anticipated load (including loads which are required to mitigate the consequences of a design l

basis accident or facilitate plant operation and maintenance) in Modes 5 and 6

)

is calculated to be less than 80% of the full rated capacity.

No 2000 hour0.0231 days 0.556 hours 0.00331 weeks 7.61e-4 months loading has been specified by the diesel generator manufacturer and, as a re-sult the full loading rating of 4700 kw is conservatively established as the 2000 hour0.0231 days 0.556 hours 0.00331 weeks 7.61e-4 months rating. Diesel frequency droop restrictions are established due to HPSI flow rate considerations.

The Surveillance Requirement for demonstrating the OPERABILITY of the Station 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."

h Verifying average electrolyte temperature above the minimum for which the l

battery was sized, total battery terminal voltage onfloat charge, connection l

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.

SAN ONOFRE-UNIT 3 B 3/4 8-2 AMENDMENT NO. 48

.-

v t e Letter Sequence Other
TAC:54698, (Approved, Closed) TAC:54699, (Approved, Closed) TAC:61516, (Approved, Closed) TAC:61517, (Approved, Closed)
Initiation Request, Request Acceptance... Administration Meeting Questions Answers Results Approval Other: ML13305A890, ML20081B573, ML20207N580, ML20212R628
MONTHYEAR1985-03-06 [Table View]

ML20212R628

Text

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