ML20206Q423

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Amends 83 & 70 to Licenses NPF-4 & NPF-7,respectively, Revising Unit 1 Tech Specs Which Address Emergency Diesel Generators & Unit 2 Tech Specs Which Address Generic Ltr. 84-15
ML20206Q423
Person / Time
Site: North Anna  Dominion icon.png
Issue date: 08/22/1986
From: Rubenstein L
Office of Nuclear Reactor Regulation
To:
Shared Package
ML20206Q429 List:
References
GL-84-15, NUDOCS 8609040391
Download: ML20206Q423 (23)
v • d • e


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UNITED STATES g

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g NUCLEAR REGULATORY COMMISSION 5

j WASHINGTON, D. C. 70555

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VIRGINIA ELECTRIC AND POWER COMPANY OLD DOMINION ELECTRIC COOPERATIVE DOCKET NO. 50-338 NORTH ANNA POWER STATION, UNIT NO. 1 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 83 License No. NPF-4 1.

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

A.

The application for amendment by Virginia Electric and Power Company, i

et al., (the licensee) dated December 19, 1985, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Comission's rules and regulations set forth in 10 CFR Chapter I; B.

The facility will operate in conformity with the application, the provisions of the Act, and the rules and regulations of the Commission; C.

There is reasonable assurance (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (iil 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 j

have been satisfied.

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l 8609040391 860822 PDR ADOCK 05000338 P

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Accordingly, the license is amended by changes to the Technical Spect-fications as indicated in the attachment to this license amendment, and paragraph 2.D.(2) of Facility Operating License No. NPF-4 is hereby amended to read as follows:

(2) Technical Specifications The Technical Specifications contained in Appendices A and B, as revised through Amendment No. 83, are hereby incorporated in the license. The licensee shall operate the facility in accordance with the Technical Specifications.

3.

This license amendment is effective within 15 days of the date of its issuance.

FOR THE NUCLEAR REGULATORY COMMISSION

~

6.

A Mber Lester S. Rubenstein, Director PWR Project Directorate #2 Division of PWR Licensing-A

Attachment:

Changes to the Technical Specifications Date of Issuance: August 22, 1986 l

a A

ATTACHMENT TO LICENSE AMENDMENT NO. 83 TO FACILITY OPERATING LICENSE NO. NPF-4 DOCKET NO. 50-338 Replace the following pages of the Appendix "A" Technical Specifications with the enclosed pages as indicated. The revised pages are identified by amendment number and contain vertical lines indicating the area of change.

The corresponding overleaf pages are also provided to maintain document completeness.

P_ age 3/4 8-1 3/4 8-2 3/4 8-3 3/4 8-3a 3/4 8-3b 3/4 8-3c 3/4 8-4 3/4 8-4c 3/4 8-5 B3/4 8-1

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

LIMITING CONDITION 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 1

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

Two separate and independent diesel generators:

1.. Each with a separate day tank containing a minimum of 750 gallons of fuel, and i

2.

A fuel storage system containing a minimum of 45,000 gallons of fuel, and 3.

A separate fuel transfer pump.

APPLICABILITY: MODES 1, 2, 3 and 4 ACTION:

a.

With one offsite circuit of 3.8.1.1.a inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

If either EDG has not been successfully tested within the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, demonstrate its OPERABILITY by performing Surveillance Requirement 4.8.1.1.2.a.4 separately for each such EDG l

within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Restore the offsite circuit to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> l

and COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

b.

With one diesel generator of 3.8.1.1.b inoperable, demonstrate the j

OPERABILITY of the A.C. offsite sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; and if the EDG became inoperable due to any cause other than preplanned preventative maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE EDG by performing Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> *; restore the diesel J

generator to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT 4

STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

i NORTH ANNA - UNIT 1 3/4 8-1 Amendment No. 83 l

ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION ACTION (Continued):

With one offsite circuit and one diesel generator inoperable, demonstrate c.

the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; and if the EDG became inoperable due to any cause other than preplanned preventative maintenance or te: ting, demonstrate the OPERABILITY of the remaining OPERABLE EDG by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> *; restore one of the inoperable sources to OPERABLE status within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Restore the other A.C. power source (offsite circuit or diesel generator) to OPERABLE status in accordance with the provisions of ~Section 3.8.1.1 Action Statement a or 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 the diesel OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4 performed under this Action Statement for an OPERABLE diesel or a restored to OPERABLE diesel satisfies the EDG test requirement of Action Statement a or b, d.

With two of the required offsite A.C. circuits inoperable, demonstrate the OPERABILITY of two diesel generators by sequentially performing Surveillance Requirement 4.8.1.1.2.a.4 on both diesels within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> unless the diesel generators are already operating; restore one of the inoperable offsite sources to OPERABLE status wtihin 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT STANDBY wtihin the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. Following restora-tion of one offsite cource, follow Action Statement a with the time requirement of that Action Statement based on the time of initial loss of the remaining inoperable offsite A.C. circuit. A successful test (s) of diesel OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4 performed under this Action Statement for the OPERABLE diesels satisfies the EDG test requirement of Action Statement a.

With two of the above required diesel generators inoperable, demonstrate e.

the OPERABILITY of two offsite A.C. circuits by performing Surveillance Requirement 4.8.1.1.1.a within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; restore one of the inoperable diesel generators to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Following restoration of one diesel generator unit, follow' Action Statement b with the time requirement of that Action Statement based on the time of initial loss of the remaining inoperable diesel generator. A successful test of diesel OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4 performed under this Action Statement for a restored to OPERABLE diesel satisfies the EDG test requirement of Action Statement b.

NORTH ANNA - UNIT 1 3/4 8-2 Amendment No.83

ELECTRICAL POWER SYSTEMS J

SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required physically 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 alignment indicating power availability, b.

Demonstrated OPERABLE at least once per 18 months during shutdown by manually transferring the onsite Class 1E power supply from the normal circuit to the alternate circuit.

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:

a.

In accordance with the frequency specified in Table 4.8.2 on a STAGGERED TEST BASIS by:

1.

Verifying the fuel level in the day tank.

2.

Verifying the fuel level in the fuel storage tank.

3.

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

4 Verifying the diesel generator can start ** and gradually accelerate to synchronous speed (900 rpm) with generator voltage and frequency at 4160 + 420 volts and 60 + 1.2 Hz.

Subsequently, verifying the gelierator is synchronTzed, gradually loaded ** to an indicated 2500-2600 KW*** and operates for at least 60 minutes.

5.

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

I b.

At least once per 92 days by verifying that a sample of diesel fuel from the fuel storage tank is within the acceptable limits specified in Table 1 of ASTM D975-74 when checked for viscosity, water and sediment.

    • This test shall be conducted in accordance with the manufacturer's l

recommendations regarding engine prelube and warmup procedures, and as l

applicable regarding loading recommendations.

I

      • This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads l

shall not invalidate the test.

1 NORTH ANNA-- UNIT 1 3/4 8-3 Amendment No. 83

EL'ECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.2 (Continued) c.

At least once per 184 days the diesel generator shall be started **

and accelerated to at least 900 rpm in less than or equal to 10 seconds. The generator voltage and frequency shall be 4160 + 420 volts and 60 + 1.2 Hz within 10 seconds after the start signal.~ The generator shat 1 be manually synchronized to its appropriate emergency bus, loaded to an indicated 2500 to 2600 kw*** in less than or equal to 60 seconds, and operate for at least 60 minutes. The diesel generator shall be started for this test by using one of the following signals on a rotating test basis:

a). Simulated loss of offsite power by itself.

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

c) An ESF actuation test signal by itself.

This test, if it is performed so it coincides with the testing required by Surveillance Requirement 4.8.1.1.2.a.4, may also serve to concurrently meet those requirements as well.

d.

At least once per 18 months during shutdown by:

Subjecting the diesel to an inspection in accordance with 1.

procedures prepared in conjunction with its manufacturer's recommendations for this class of sttndby service.

2.

Verifying that, on rejection of a load of greater than or equal to 610 kw the voltage and frequency are maintained with 4160 + 420 volts and 60 + 1.2 Hz.

3.

Verifying that the load sequencing timers are OPERABLE with times within the tolerances shown in Table 4.8-1.

    • This test shall be conducted in accordance with the manufacturer's recommendations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.
      • This band is meant as guidance to avoid routine overloading of the engine. Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

NORTH ANNA - UNIT 1 3/4 8-3a Amendment No. 77,83 l

r ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.2 (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, energizes the auto-connected shutdown loads through the sequencing timers and operates for greater than or equal to 5 minutes while its generator is loaded with the shutdown loads. After energization of these loads, the steady state voltage and frequency shall be maintained at 4160 + 420 volts and 60 + 1.2 Hz.

5.

Verifying that on an ESF actuation 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.

6.

Simulating a loss of offsite power in conjunction with an ESF actuation 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 sequencing timers and operates for greater than or equal to 5 minutes and maintains the steady state voltage and frequency at 4160 1 420 volts and 60'11.2 Hz.

c) Verifying that all diesel generator trips, except ergine overspeed, generator differential and breaker overcurrent are automatically bypassed upon loss of voltage on the emergency bus and/or a safety injection actuation signal.

    • This test shall be conducted in accordance with the nanufacturer's recommendations regarding engine prelube and warmup procedures, and as applicable regarding loading recomendations.

NORTH ANNA - UNIT 1 3/4 8-3b Amendment No. 83

r ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.2 (Continued) 7.

Verifying the diesel generator operates ** for at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the diesel generator shall be loaded to an indicated target value of 2950 kw (between 290--3000 kw)*** and during the remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of this test, the diesel generator shall be loaded to an indicated 2500 to 2600 kw.***

Within 5 minutes after completing this 24-hour test, perform Surveillance Requirement 4.6.1.1.2.d.4.

8.

Verifying that the auto-connected loads to each diesel generator do not exceed the 2000 hour0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> rating of 3000 kw.

9.

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) Proceed through its shutdown sequence.

10. Verifying that the following diesel generator lockout features prevent diesel generator starting only when required:

a) Remote Local Selection Switch b) Emergency Stop Switch i

e.

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

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

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    • This test shall be conducted in accordance with the manufacturer's recommendations regarding engine prelube and warmup procedures, and as applicable regarding loading recommendations.

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      • This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

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NORTH ANNA - UNIT 1 3/4 8-3c Amendment No.83 l

e ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS l

4.8.1.1.3 Each diesel generator 125-volt battery bank and charger shall be demonstrated OPERABLE:

a.

At least once per 7 days by verifying that:

1.

The electrolyte level of each pilot cell is between the minimum and maximum level indication marks, 2.

The pilot cell specific gravity, corrected to 77'F and full electrolyte level, is 3.1.200, 3.

The pilot cell voltage is 3.2.08 volts, and 4.

The overall battery voltaga is 3,125 volts, b.

At least once per 92 days by verifying that:

1.

The voltage of each connected cell is >2.08 volts under float charge and has not decreased more than 0.05 volts from the value observed during the previous test, 2.

The specific gravity, corrected to 77'F and full electrolyte level, of each connected cell is >1.200 and has not decreased more than 0.08 from the value observed during the previous test, and 3.

The electrolyte level of each connected cell is between the minimum and maximum level indication marks.

c.

At'least once per 18 months, by verifying that:

l 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 anti-corrosion material.

3.

The resistance of each cell-to-cell and terminal connection is 5,0,01 ohms.

4 The battery charger will supply at least 10 amperes at 125 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 60 months, during shutdown, by verifying that the battery capacity is at least 80% of the manufacturer's rating when subjected to a performance discharge test.

NORTH ANNA - UNIT 1 3/4 8-4 Amendment No. 83

ELECTRICAL POWER SYSTEMS Table 4.8-2 DIESEL GENERATOR TEST SCHEDULE Number of Failures in Number of Failures in Last 20 Valid Tests

  • Last 100 Valid Tests
  • Test Frequency

<1

<4 Once per 31 days

> 2**

>5 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, but determined on a per diesel generator basis.

For the purposes of determining required test frequency, the previous test failure count may be reduced to zero if a complete diesel'overhal to like-new conditions is completed, provided that the overhauling including appro-priate post-maintenance operation and testing, is specifically approved by the manufacturer and if acceptable reliability has been demonstrated.

The reliability criterion shall be the successful completion of 14 consecutive tests in a single series. Ten of these tests shall be in accordance with Surveillance Requirement 4.8.1.1.2.a.4; four tests, in accordance with Surveillance Requirement 4.8.1.1.2.c.

If this criterion is not satisfied during the first series of tests, any alternate criterion to be used to transvalue the failure counts to zero requires NRC approval.

    • The associated 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.

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NORTH ANNA - UNIT 1 3/4 8-4c Amendment No. 83

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ELECTRICAL POWER SYSTEMS SHUTDOWN LIMITING CONDITION FOR OPERATION 3.8.1.2 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

a.

One circuit between the offsite transmission network and the onsite Class 1E distribution system, and b'.

One diesel generator with:

1.

A day tank containing a minimum volume of 750 gallons of

fuel, 2.

A fuel storage system containing a minimum volumo of 45,000 gallons of fuel, and 3.

A fuel transfer pump.

APPLICABILITY: MODES 5 and 6.

ACTION:

With less than the above minimum required A.C. electrical power sources i

OPERABLE, suspend all operations involving CORE ALTERATIONS or positive l

reactivity changes until the minimum required A.C. electrical power l

sources are restored to OPERABLE status.

j SURVEILLANCE REQUIREMENTS l

l 4.8.1.2 The above required A.C. electrical power sources shall be demonstrated OPERABLE by the performance of each of the Surveillance Requirements of 4.8.1.1.1, 4.8.1.1.2 and 4.8.1.1.3.

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NORTH ANNA - UNIT 1 3/4 8-5 Amendment No. AA, 83 t

ELECTRICAL POWER SYSTEMS 3/4.8.2 ONSITE POWER DISTRIBUTION SYSTEMS A.C. DISTRIBUTION - OPERATING LIMITING CONDITION FOR OPERATION 3.8.2.1 The following A.C. electrical busses shall be OPERABLE and energized with tie breakers open between redundant busses:

4160 volt Emergency Bus # 1H

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4160 volt Emergency Bus # 1J 480 volt Emergency Bus # 1H, 1H1 480 volt Emergency Bus # 1J, 1J1 120 volt A.C. Vital Bus # 1-I 120 volt A.C. Vital Bus # 1-II 120 volt A.C. Vital Bus # 1-III 120 volt A.C. Vital Bus # 1-IV APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

l With less than the above complement of A.C. busses OPERABLE, restore the inoperable bus to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

SURVEILLANCE REQUIREMENTS 4.8.2.1 The specified A.C. busses shall be determined OPERABLE with tie breakers open between redundant busses at least once per 7 days by verifying correct breaker alignment and indicated power availability.

NORTH ANNA - UNIT 1 3/4 8-6

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3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1 and 3/4.8.2 A.C. and D.C. POWER SOURCES AND 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 t6 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 indepen-dent and redundant A.C. and D.C. power sources and distribution systems satisfy the requirements of General Design Criteria 17 cf 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 The OPERABILITY of the comensurate with the level of degradation.

power sources are consistent with the initial condition assumptions of the accident analyses and are based upon maintaining at least one of each of the onsite A.C. and D.C. power sources and associated distri-bution systems OPERABLE during accident conditions coincident with an

. assumed loss of offsite power and single failure of the other onsite A.C. source.

The OPERABILITY of the minimum specified A.C. and D.C. power sources and associated distribution systems during shutdown and re-fueling ensures that 1) the facility can be maintained in the shutdown or refueling condition for extended time periods and 2) sufficient instrumentation and contro1' capability is available for monitoring and maintaining the facility status.

l*

The Surveillance Requirements for demonstrating the OPERABILITY l

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, as modified by j

l Amendment No. 83 issued August 22, 1986.

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i NORTH ANNA - UNIT 1 B 3/4 8-1 Amendment No. 83 l

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UNITED STATES gg g

g NUCLEAR REGULATORY COMMISSION 5

j W ASHINGTON, D. C. 20555

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VIRGINIA ELECTRIC AND POWER COMPANY OLD DOMINION ELECTRIC COOPERATIVE DOCKET NO. 50-339 NORTH ANNA POWER STATION, UNIT NO. 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 70 License No. NPF-7 1.

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

A.

The application for amendment by Virginia Electric and Power Company, et al., (the licensee) dated December 19, 1985, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Comission's rules and regulations set forth in 10 CFR Chapter I; 8.

The facility will operate in confomity with the application,

)

the provisions of the Act, and the rules and regulations of the Commission; 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; 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 been satisfied.

. 2.

Accordingly, the license is amended by changes to the Technical Speci-fications as indicated in the attachment to this license amendment.

and paragraph 2.C.(2) of Facility Operating License No. NPF-7 is hereby amended to read as follows:

(2) Technical Specifications The Technical Specifications contained in Appendices A and B, as revised through Amendment No. 70, are hereby incorporated in the license. The licensee shall operate the facility in accordance with the Technical Specifications.

3.

This license amendment is effective within 15 days of the date of its issuance.

FOR THE NUCLEAR REGULATORY COMMISSION k,

w dbbi Lester S. Rubenstein, Director PWR Pro,1ect Directorate #2 Division of PWR Licensing-A

Attachment:

Changes to the Technical Specifications Date of Issuance: August 22, 1986 1

ATTACHMENT TO LICENSE AMENDMENT NO. 70.

TO FACILITY OPERATING LICENSE NO. NPF-7 DOCKET NO. 50-339 Replace the following pages of the Appendix "A" Technical Specifications with the enclosed pages as indicated. The revised pages are identified by amendment number and contain vertical lines indicating the area of change.

The corresponding overleaf pages are also provided to maintain document completeness.

P*Re 3/4 8-2 3/4 8-4 3/4 8-10

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3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES OPERATING LIMITING CONDITION FOR OPERATION 3.8.1.1 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

Two physically independent circuits between the offsite transmission a.

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

Two separate and independent diesel generators:

1.

Each with a separate day tank containing a minimum of 750 gallons of fuel, and 2.

A fuel storage system containing a minimum of 45,000 gallons of fuel, and 3.

A separate fuel transfer pump.

APPLICABILITY:

MODES 1, 2, 3 and 4.

ACTION:

a.

With one offsite circuit of 3.8.1.1.a inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by perfonning Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

If either EDG has not been successfully tested within the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, demonstrate its OPERABILITY by performing Surveil-lance Requirement 4.8.1.1.2.a.4 separately for each such EDG within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Restore the offsite circuit to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, b.

With one diesel generator of 3.8.1.1.b inoperable, demonstrate the OPERABILITY of the A.C. offsite sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> l

thereafter; and if the EDG became inoperable due to any cause other l

than preplanned preventative maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE EDG by performing Surveil-i l

lance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> *; restore the diesel l

generator to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at least l

HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

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i NORTH ANNA - UNIT 2 3/4 8-1 Amendment No. 48 70 i

ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION ACTION:

(Continued) c.

With one offsite circuit and one diesel generator inoperable, demon-strate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within one hour and,at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; and if the EDG became inoperable due i

to any cause other than preplanned preventative maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE EDG by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> *;

restore one of the inoperable sources to OPERABLE status within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

Restore the other A.C.

power source (offsite circuit or diesel generator) to OPERABLE status in accordance with the provisions of Section.3.8.1.1 Action Statement a or b, as appropriate with the time requirement of that Action State-ment based on the time of initial loss of the remaining inoperable A.C. power source. A successful test of diesel OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4 performed under this Action Statement for an OPERABLE diesel or a restored to OPERABLE diesel satisfies the EDG test requirement of Action Statement a or b.

d.

With two of the required offsite A.C. circuits inoperable, demonstrate the OPERABILITY of two diesel generators by sequentially performing Surveillance Requirement 4.8.1.1.2.a.4 on both diesels within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, unless the diesel generators are already operating; restore one of the inoperable offsite sources to OPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

Following restora-tion of one offsite source, follow Action Statement a with the time requirement of that Action Statement based on the time of initial loss of the remaining inoperable offsite A.C. circuit. A successful test (s) of diesel OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4 performed under this Action Statement for the OPERABLE diesels satisfies the EDG test requirement of Action Statement a.

e.

With two of the above required diesel generators inoperable, demonstrate the OPERABILITY of two offsite A.C. circuits by perfonning Surveillance Requirement 4.8.1.1.1.a within one hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter; restore one of the inoperable diesel generators to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. Following restoration of one diesel generator unit, follow Action Statement b with the time requirement of that Action Statement based on the time of initial loss of the remaining inoperable diesel generator. A successful test of diesel OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4 performed under this Action Statement for a restored to OPERABLE diesel satisfies the EDG test requirement of Action State-ment b.

NORTH ANNA - UNIT 2 3/4 8-2 Amendment No.g, 70

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l ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required physically independent circuits between i

I the offsite transmission network and the onsite Class lE distribution system i

shall be:

I j

a.

Determined OPERABLE at least once per 7 days by verifying correct breaker alignment indicating power availability.

b.

Demonstrated OPERABLE at least once per 18 months during shutdown by manually transferring the onsite Class 1E power supply from the normal circuit to the alternate circuit.

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4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:

i a.

In accordance with the frequency specified in Table 4.8.2 on a STAGGERED TEST BASIS by:

1.

Verifying the fuel level in the day tank.

2.

Verifying the fuel level in the fuel storage tank.

1 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 can start ** and gradually acceleratetosynchronousspeed(900 rpm)withgeneratorvoltage l

and frequency at 4160 + 420 volts and 6011.2 Hz. Subsequently, j

verifying the generator is synchronized, gradually loaded ** to an indicated 2500-2600 kW*** and operates for at least 60 minutes.

I 5.

Verifying the diesel generator is aligned to provide standby l

power to the associated emergency buses.

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b.

At least once per 92 days by verifying that a sample of diesel fuel from the fuel storage tank obtained as a DRAIN sample in accordance I

with ASTM-D270-65, is within the acceptable limits specified in Table 1 of ASTM 0975-74 when checked for viscosity, water and j

sediment.

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c.

At least once per 184 days the diesel generator shall be started **

l and accelerated to at least 900 rpm in less than or equal to 10 seconds. The generator voltage and frequency shall be 4160 + 420 volts and 6011.2 Hz within 10 seconds after the start signal.

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    • This test shall be conducted in accordance with the manufacturer's recommen-I dations regarding engine prelube and warmup procedures, and as applicable

{

regarding loading recommendations, i

      • This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of I

the manufacturer or momentary variations due to changing bus leads shall not l

invalidate the test.

NORTH ANNA - UNIT 2 3/4 8-3 Amendment No. 48 ?c

i ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.2 (Continued)

The generator shall be manually synchronized to its appropriate emergency bus, loaded to an indicated 2500-2600*** kW in less than or equal to 50 seconds, and operate for at least 60 minutes. The diesel generator shall be started for this test by using one of the following signals on a rotating test basis:

a) Simulated loss of offsite power by itself.

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

c) An ESF actuation test signal by itself.

This test, if.it is performed so it coincides with the testing required by Surveillance Requirement 4.8.1.1.2.a.4, may also serve to concurrently meet those requirements as well.

d.

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.

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Verifying that, on rejection of a load of greater than or equal 2.

to 610 kW the voltage and frequency are maintained with 41601 420 volts and 60 1 1.2 Hz.

3.

Verifying that the load sequencing timers are OPERABLE with times within the tolerances shown in Table 4.8.1.

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, energizes the auto-connected shut-down loads through the sequencing timers and operates for greater than or equal to 5 minutes while its generator is loaded with the shutdown loads. After energization of these loads, the steady state voltage and frequency shall be maintained at 4160 + 420 volts and 60 + 1.2 Hz.

    • This test shall be conducted in accordance with the manufacturer's recommen-dations regarding engine prelube and warmup procedures, and as applicable regarding loading recomendations.
      • This band is meant as guidance to avoid routine overloading of the engine.

Loads in excess of this band for special testing under direct monitoring of the manufacturer or momentary variations due to changing bus loads shall not invalidate the test.

NORTH ANNA - UNIT 2 3/4 8-4 Amendment No. 42,48,70

e TABLE 4.8-2 j

d DIESEL GENERATOR TEST SCHEDULE i

Number of Failures l

-Number of Failures in in Last 100 Valid j

Last 20 Valid Tests

  • Tests
  • Test Frequency

<1

<4 Once per 31 days

>2**

>5 Once per 7 days i

9 h

  • 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, but determined on a per diesel generator basis.

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For the purposes of determining the. required test frequency, the previous test failure count may be reduced to zero if a complete diesel overhaul to like-new conditions is completed, provided that the overhaul including appropriate post-maintenance operation and testing, is specifically approved by the manufacturer and if acceptable reliability has been demonstrated. The reliability criterion shall be the successful completion of 14 consecutive i

tests in a single series. Ten of these tests shall be in accordance with Surveillance Requirement 4.8.1.1.2.a.4; four tests, in accordance with Surveillance Requirement 4.8.1.1.2.c.

If this criterion is not satisfied j

during the first series of tests, any alternate criterion to be used to transvalue the failure count to zero requires NRC approval.

    • The associated test frequency shall be maintained until seven consecutive failure free demands have been performed _and the number of failures in the i

last 20 valid demands has been reduced to one, i

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NORTH ANNA - UNIT 2 3/4 8-9 Amendment No. 48 E9 l

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ELECTRICAL POWER SYSTEMS SHUTDOWN

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LIMITING CONDITION FOR OPERATION 3.8.1.2 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

a.

One circuit between the offsite transmission network and the onsite Class 1E distribution system, and b.

One diesel generator with:

1.

A day tank containing a minimum volume of 750 gallons of fuel,

~2.

A fuel storage system containing a minimum volume of 45,000 gallons of fuel, and 3.

A fuel transfer pump.

APPLICABILITY: MODES 5 anj 6 ACTION:

With less than the above minimum required A.C. electrical power sources OPERABLE, suspend all operations involving CORE ALTERATIONS or positive reactivity changes until the minimum required A.C. electrical power sources are restored to OPERABLE status.

SURVEILLANCE REQUIREMENTS 4.8.1.2 The above requi. red A.C. electrical power sources shall be demon-i strated OPERABLE by the performance of each of the Surveillance Requirements 1

of 4.8.1.1.1., 4.8.1.1.2, and 4.8.1.1.3.

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NORTH ANNA - UNIT 2 3/4 8-10 Amendment No. 4% 70 l

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