ML20198H870

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Amend 50 to License NPF-12,revising Tech Spec 3/4 8.1 to Reduce Number & Severity of Diesel Generator Starts,Per Generic Ltr 84-15
ML20198H870
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 05/20/1986
From: Rubenstein L
Office of Nuclear Reactor Regulation
To:
Shared Package
ML20198H876 List:
References
GL-84-15, NUDOCS 8605300581
Download: ML20198H870 (12)


Text

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0 accoq(o UNITED STATES g

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g NUCLEAR REGULATORY COMMISSION 3

-l WASHINGTON, D. C. 20555

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SOUTH CAROLINA ELECTRIC & GAS COMPANY S0llTF CADOLINA PUBLIC SERVICE AUTHORITY 110CKET NO. 50-395 VIRGIL C. SUMMER NilCLFAR STATION, UNIT NO. 1 AMENDMENT TO FACILITY OPERATING LICENSE Amendment No.50 License No. NPF-17 1.

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

K.

The application for amendment by the South Caroli;a Electric & Gas,

Company acting)for itself and South Carolina Public Service Authority (the licensees, dated June 10, 1985, complies with the standards arid requirements of the Atomic Energy Act of 195A, as amended (the Act)-

3 and the Comission's regulations as set forth in 10 CFR Chapter I; B.

The facility will operate in conformity with the application, as amended, the provisions of the Act, and the regulations of the Comission; 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 (ii) that such activities will be conducted in compliance with the Coputission's regulations set forth in 10 CFR Chapter I; D.

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

E.

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

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Accordingly, the license is hereby amended by changes to the Technical Specifications as indicated in the attachments to this license amendment and paragraph 2.C(2) of Facility Operating License No. NPF-12 is hereby amended to read as follows:

(2) Technical Specifications j

The Technical Specifications contained in Appendix A, as revised through Amendment No. 50, are hereby incorporated into this license.

South Carolina Electric & Gas Company shall operate the facility

_._.i in accordance with the Technical Specifications and the Environmental Protection Plan.

3.

This license amendment is effective seven days after its date of issuance.

FOR THE NUCLEAR REGULATORY COMMISSION p

ester S. Rubenstein, Director PWR Project Directorate #2 Division of PWR Licensino-A Office of Nuclear P.eactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance: May 20, 1986 e

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ATTACHMENT TO LICENSE AMENDMENT AMENDMENT NO.50 TO FACILITY OPERATING LICENSE NO. NPF-12

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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 areas of change.

The corresponding overleaf pages are provided to maintain document completeness.

Remove Pages Insert Pages 3/4 8-2 3/4 8-2 3/4 8-3 3/4 8-3 3/4 8-4 3/4 8-4 3/4 8-5 3/4 8-5 3/4 8-6 3/4 8-6 3/4 8-6a 3/4 8-7 3/4 8-7

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:

a.

Two physically independent circuits between the offsite transmission network and the onsite Class 1E distribution system, and b.

Two separate and independent diesel generators, each with:

1.

A separate day fuel tank containing a minimum volume of 300 gallons of fuel, 2..

A separate fuel storage system containing a minimum volume of.'

42,500 gallons of fuel, and

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3.

A separate fuel transfer pump.

APPLICABILITY:

MODES 1, 2, 3 and 4.

ACTION:

a.

With either an offsite circuit or diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirements 4.8.1.1.1.a and 4.8.1.1.2.a.4 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 at least two offsite circuits and two diesel generators 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 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 />.

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. sources by performing Surveillance Requirements 4.8.1.1.1.a and 4.8.1.1.2.a.4 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 at least 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 at least two offsite circuits and two diesel generators to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from the time of initial loss 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 />.

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l SUMER - UNIT 1 3/4 8-1 1

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

I b.

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

4.8.1.1.2. Each diesel generator shall be demonstrated OPERABLE:

a.

In accordance with the frequency specified in Table 4.8-1 on a STAGGERED TEST BASIS by:

1.

Verifying the fuel level in the day tank and fuel storage tank.

2.

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

3.

Verifying the diesel generator can start

  • and accelerate to synchronous speed (504 rpm) with generator voltage and frequene.y at 7200 1 720 volts and 60
  • 1.2 Hz.

4.

Verifying the generator is synchronized, gradually loaded

  • to "

greater than or equal to 4250 kW and operates for at least 60 minutes.

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 <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> by removing accumulated water from the day tank.

c.

At least once per 92 days and from new fuel prior to addition to the storage tanks, by obtaining a sample of fuel oil in accordance with ASTM-D270-1975, and by verifying that the sample meets the following minimum requirements and is tested within the specified time limits:

1.

As soon as sample is taken (ar prior to adding new fuel to the storage tank) verify in acco? dance with the tests specified in ASTM-0975-77.that the sample has:

a)

A water and sediment coltent of less than or equal to 0.05 volume percent.

b)

A kinematic viscosity @ 40'C of greater than or equal to 1.9 centistokes, but less than or equal to 4.1 centistokes.

c)

A specific gravity as specified by the manufacturer @

60/60'F of greater than or equal to 0.83 but less than or equal to 0.89 or an API gravity @ 60 F of greater than or equal to 27 degrees but less than or equal to 39 degrees.

QThis test shall be conducted in accordance with the manufacturer's recommenda-tions regarding engine prelube and warmup procedures, and as applicable regard-ing loading recommendations a

SUMMER - UNIT 1 3/4 8-3 AMENDMENT NO. 50 1

1

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

I 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 load sequencer and operates for greater than or equal to 5 minutes while its generator is loaded with the shutdown loads.

After energization, the steady-state voltage and frequency of the emergency busses shall be maintained at 7200 1 720 volts and 60 1 1.2 Hz during this test.

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.

The generator voltage and frequency shall be 7200 1 720 volts and 60

  • 1.2 Hz within 10 seconds after the frequency shall be maintained within these limits during this,",-

auto-start signal; the steady-state generator voltage and test.

After 5 minutes of standby operation verify that on a

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simulated loss of offsite power, a) the loads are shed from the emergency busses b) the diesel generator does not connect to the bus for at least 5 seconds, and c) that subsequent loading of the diesel generator is in accordance with design requirements.

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.

j b)

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

After energization, the steady state voltage and frequency of the emergency busses shall be maintained at 7200 1 720 volts and 60 1 1.2 Hz during this test.

c)

Verifying that all automatic diesel generator trips, except engine overspeed, low lube oil pressure and generator differential, are autom dicially bypassed upon loss of voltage on the emergency bus concurrent with a safety injection actuation signal.

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SUMER - UNIT 1 3/4 8-5 AMEN 0 MENT NO. 50

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

I f.

At least once per 10 years or after any modifications wtjich could l

affect diesel generator interdependence by starting the diesel generators simultaneously, during shutdown, and verifying that the diesel generators accelerate to at least 504 rpm in less than or equal to 10 seconds.

I g.

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 its 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 6e design pressure.

D 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 diesel tenerator failures shall include the information recommended in Regu-latory 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.

SUMMER - UNIT 1 3/4 8-6a AMENDMENT N0. 50

1 TABLE 4.8-1 DIESEL GENERATOR TEST SCHEDULE Number of Failures Number of Failures in in Last 100 Valid Last 20 Valid Tests

  • Tests
  • Test Nequency 11 14 Once per 31 days 12**

15 Once per 7 days

  • CriteriafordeterminingnumberoffailuresandnumberofvalidtestsshalI be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, "

but determined on a per diesel generator basis.

3 For the purposes of determining the required test frequency, the previous test failure count may be reduced to zero if, in conjunction with the manu-facturer a complete diesel overhaul to like-new conditions is completed, and if acceptable reliability has been demonstrated.

The reliability crite-rion shall be the successful completion of 14 consecutive tests in a single series.

Ten of these tests shall be in accordance with Surveillance Require-ment 4.8.1.1.2.a.3; four tests, in accordance with Surveillance Require-ment 4.8.1.1.2.d.

If this criterion is not satisfied 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 last 20 valid demands has been reduced to one.

l AMEN 0 MENT NO. 50 SU!HER - UNIT 1 3/4 8-7 1