Text

Amend 141 to License NPF-6,revising TS 3/4.8.1, A.C. Sources, to Achieve Consistency W/Gl 84-15
	ML20126H403
Person / Time
Site:	Arkansas Nuclear
Issue date:	12/15/1992
From:	Larkins J; Office of Nuclear Reactor Regulation
To:	;
Shared Package
ML20126H407	List: ML20126H403; ML20126H438;
References
	GL-84-015, NPF-06-A-141 NUDOCS 9301050183
	Download: ML20126H403 (11)
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UNITED 8TATEs 8

NUCLEAR REGULATORY COMMISSION

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[14TERGY OPERATIONS. INC.

DOCKET NO. 50-368 ARKANSAS NUCLEAR ONE. UNIT NO. 2 AMENDMENT 10 FACILITY OPER& TING LICENi[

Amendment No.141 License No. NPF-6 1.

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

A.

The application for amendment by Entergy Operations, Inc. (the licensee) dated October 9, 1990, as supplemented by letters dated May 12. and September 28, 1992, complies with the standards and recuirements of the Atomic Energy Act of 1954, as amended (the Act),

anc the Commission'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 (ii) that such activities will be conducted in compliance with the Commission's regulations; D.

The issuance of this license 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 Commission's regulations and all applicable requirements have been satisfied.

9301050103 921215 i

PDH ADOCK 05000368 P=

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2.

Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attachment to this license amendment, and Paragraph 2.C.(2) of facility Operating License No NPF-6 is hereby amended to read as follows:

2.

Technical Sorcifications The Technical Specifications contained in Appendix A, as revised through Amendment No.141, are hereby incorporated in the license.

The licensee shall operate the facility in accordance with the Technical Specificationc.

3.

The license amendment is effective 30 days from the date of issuance.

FOR THE NUCLEAR REGULATORY COMMISSION

'2n L John T. Larkins, Director Project Directorate IV-1 Division of Reactor Projects - Ill/lV/V Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of issuance: December 15, 1992 4

i.--..

i ATTACHMENT TO LICENSE AMENDMENT NO.141 l

[ACILITY OPERATING LICENSE NO. NPF-6 DOCKET NO. 50-3_63 P,evise the following pages of the Appendix "A" Technical Specifications with the attached pages.

The revised pages are identified by Amendment number and contain vertical lines indicating the area of change.

REMOVE PAGES INSERT PAGES 3/4 8-1 3/4 8-1 3/4 8-2 3/4 8-2 3/4 8-2a 3/4 8-3 3/4 8-3 3/4 8-4 3/4 8-4 3/4 8-4a 3/4 8-4a 3/4 8-4b 3/4 8-4b B 3/4 8-1 B 3/4 8-1 h

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3/4.8 FLECTRICAL POWER SYSTEh3 3/4.8.1 A.C. SOURCES LIMITING CONDITION TOR OPEPATION i

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 day fuel tank containing a minimum volume of 280 gallons of fuel (equivalent to 50% of indicated tank volume),

2.

A separate fuel storage system containing a minimum volume of 22,500 gallons of fuel (equivalent to 100% of indicated tank level), and 3.

A separate fuel transfer pump.

APPLICABILITY: MODES 1, 2, 3 and 4.

ACTION:

a.

With one offsite A.C. circuit of the above required A.C. electrical power sout.;s inoperable, demonstrate the OPERABILITY of the remaining offsite A.C. circuit by performing Surveillance Requirement 4.*

1 I '.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 thereaftu.

either diesel generator has not been successfully tei,vd wishin the past 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , demonstrate its OPERABILITY by performing Surveillance Requirement 4.8.1.1.2.a.4 separately for each diesel generator (unless it is already opera-ting) within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore the offsite A.C. circuit to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least ll0T 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 diesel generator of the above required A.C. electrical pouer source inoperable, demonstrate the OPERABILITY of both the offsite A.C. circuits by performing Surveillance Requirement 4.8.1.1.1.a within 1 bour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter.

If the diesel generator became inoperable due to any cause other i

than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE diesel generator (unless it has been successfully tested in the last 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or is already operating) by performing 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 . Restore the diesel generator 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 SHUTCOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months .

ARKANSAS - UNIT 2 3/4 8-1 Amendment No.141

6-ELECTRICAL POWER SYSTEMS ACTION (Continued) c.

With one offsite A.C. circuit and one diesel generator of the above required A.C. electrical power sources inoperable, demonstrate the OPERABL11T of the remaining offsite A.C. circuit by performing Sur-ve111ance 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 B hours thereafter; and, if the diesel generator became inoperable due to any cause other than preplanned preventive maintenance or test-ing, demonstrate the OPERABILITY of the remaining OPERABII diesel generator 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 it is already operating or has been tested within the last 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ). Restore at least one of the inoperable sources to OPERABLE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or be in at least HOT STANDBY vithin 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 both offsite circuits and both diesel generators to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months of the initiating event 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 .

d.

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

electrical power sources inoperabls perform Surveillance Require-ment 4.8.1.1.2.a.4 on the diesel generators within the next 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months (unless the diesel generators are already operating or have been successfully tested within the past 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months ). Restore one of the inoperable offsite A.C. circuits 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 and

. COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . Restore both A.C. circuits within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months of the initiating event 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 diesel generators of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the 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 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 iext 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 both diesel generators within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months of the initiating event 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 .

ARKANSAS - UNIT 2 3/4 8-2 Amendment No.141

9 E

ELECTRICAL POWER SYSTEM SURVEILLANCE REQUIREMENTS-4.8.1.1.1 Each of _the above required independent circuits between.the offsite tranreission network and the onsite Class 1E distribution system shall bet a.

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

. Demonstrated OPERABLE at least once por 18 months during shutdown -

by transferring (manually and automatically) unit power supply from the normal circuit to the alternato circuit.

4.8.1.1.7 Each diesel generator shall be demonstrated OPERABLE:

(Note 1) 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 fuel tank.

2.

Verifying she 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 starts from a standby condition and accelerates to at'least 900 rpm in 5 15 seconds.

(Note 2) 5.

Verifying the generator is synchronized, loaded to an indicated 2600 to 2850 Kw and operates for-E 60 minutes.

(Notes 3 & 4)-

6.

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

b.

At least once per 92 days by verifying that a sample _ of diesel fuel from.the fuel storage tank obtained in-accordance with, ASTH-D270-65, is within the acceptable limits specified in Table 1 of ASTM D975-74 when checked for viscosity, water and-sediment.

Note 1 All planned diesel generator starts for the purposes of these surveil-lances may'be preceded by prelube procedures.

Note 2 This diesel generator start ~from a standby condition in 5 15 sec.

shall be ' accomplished at least once every 184 days. All other diesel-generator starts for this surveillance may be in accordance with vendor recommendations.

Note 3 Diesel generator loading may be accomplished in'accordance with vendor recommendations such as gradual loading.

Note 4-Momentary transients outside this load band due to changing loads will not invalidate the test. Load ranges are allowed to preclude over-loading the diesel generators.

. ARKANSAS UNIT 2 3/4 8-2a Amendment No.141

... - 3

_o ELECTRICAL POWER SYSTDi SURVEILLANCE REQUIREMENTS (Continued) c.

At least once per 18 months during shutdown by:

1.

Subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturer's recommendations for this class of standby service.

2.

Verifying that the automatic sequence time delay relays are

' OPERABLE at their setpoint i 10% of the elapsed time for' each load block.

3.

Verifying the generator capability to reject a load of 2596-kw and maintain voltage at 4160 1 500 volts and frequency at 60 t 3 Hz.

4.

Verifying the generator capability to reject a load of 2850 Kw without exceeding 75% of the difference between nominal speed and the overspeed. trip setpoint, or 15% above nominal, whichever is lower.

5.

Simulating a loss of offsite power by itself, and:

a.

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

b.

Verifying the diesel starts from a standby condition on the undervoltage auto-start signal, energizes the L

emergency busses with permanently connected loads, energizes the auto-connected; shutdown loads through the time delay relays and operates for 2 5 minutes while its generator is~1oade.d with the shutdown loads.

6.

Verifying that on a Safety injection Actuation Signal:

(SIAS) actuation test signal (without loss of offsite-power) the diesel generator starts on.the auto-start signal and operates on standby for 2 5_ minutes..

ARKANSAS -UNIT 2 3/4 6-3 Amendment No. Q, 141

-___-_________-___-__-____-___a

EtJCTRICAL POWER SYSIElij 4

EURVETf1ANCE REnttiREMENTS f Centinund1 s

7.

Verifying that all diesel generator trips, except' engine -

overspeed, lube oil pressure, generator differential, and engine failure to start, are automatically bypassed upon n' Safety injection Actuation Signal.

B.

Simulating a loss of offsite power in conjunction with SIAS ands a)

Verifying de-energization of the emergency busses and load shedding from the emergency busses, b)

Verifying the diesel starts from a standby condition on the auto-start signal, energizes the emergency busses with permanently connected loads, energizes the auto-connected emergency (accident) loads through the Time Delay Relays and operates for 2 5 minutes while l

its generator is loaded with the emergency loads.

9.

Verifying the diesel generator operates for at 13ast 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 shall be loaded to an indicated;3000 to 3200 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 an indicated 2600 to 2850 Kw (Notes 3 & 4).

Within 5 minutes after completing this-24 hour test, repeat Specification 4.6.1.1.2.c.5.

(Note 5) 10.

Verifying that the auto-connected loads to each diesel generator do not exceed the 2 hour2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months rating of 3135 Kw.

Note 3 Diesel generator loading may be accomplished in accordance with vendor recommendations, such as gradual loading.

Note.4 Homentary transients outside this load band due to changing loads will not invalidate the test. Load' ranges-are allowed to preclude overloading the diesel generators.

Note 5 If this test is not satisfactorily completed,.it is not necessary to repeat the preceding 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months test', instead, the diesel generator may be operated.at 2600 to 2850 Kw until internal temperatures stabilize but not less than 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months , then perform test 4.8.1.1.2.c.5 within 5 minutes.

ARKANSAS - UNIT 2 3/4 8-4 Amendment No. M, 74, 127,141

- 6. -

TTTCTRICAL POWER SYSTEMS SURVE1LLANCE REQUIREMENTS (Continued)

11. Verifying the diesel generator's capability tor 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.

12.

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) auto-matically energizes the auto-connected emergency (accident) l loads with offsite power.

13.

Verifying that the fuel transfer pump transfers fuel-

.from each fuel storage tank to the day tank of each diesel via the installed cross connection lines.

d.

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 diesel generators accelerate to at least 900 rpm in 5 15 seconds.

4.8.1.1.3 Recorts - See Specification 6.9.1.5.d.

ARKANSAS -LUNIT 2 3/4 8-4a Amendment No. 71,~141;

TABLE 4.8-1 6

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

Last 100 Valid Tests

Test Frequency 51 54 At least once per 31 days 22 25 At least once per 7 days **

Criteria for determining number of failures and number of valid tests shall be in accordance with Regulatory Guide 1.108, where the last 20/100 tests are determined on a per diesel generator unit 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 and the number of failurcs in the last 100 valid demands has been reduced to four or less.

ARKANSAS - UNIT 2 3/4 6-4b Amendment No. 141

- - ~

d 2/18 ELECTRICAL POWER SYSTEMS EASES 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 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 Design Criteria 17 of Appendix "A" to 10 CFR 50.

The ACTION requirements specified for the levels of degradation of the power sou.rces provide restriction upon continued facility operation commensurate with the level of degradation. The OPERABILITY of the power sources are consistent with the initial condition assumptions of the accident analyses and are 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. ACTION requirements are consistent with Generic. Letter 84-15, " Proposed Staff Actions to Improve and Maintain Diesel Generstor Reliability."

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) sufficient instrumentation and control capability is available for monitoring and maintaining the unit status.

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 "Periedic Testing of Diesel Generator Units Used as Onsite Electric Power Systems at Nuclear Power Plants" 'ed in Revision 1 August 1977 and Generic Letter 84-15.

Load Ranges provid surveillances are allowed to avoid routine overloading of diesel generators.

Load in excess of these load ranges for special testing, momentary variation due to changing bus loads, or short ters variations shall not invalidtte surveillance tests. For the purpose of surveillance testing, the term

" standby condition" is defined as the approximate temperature range of the jacket cooling water and engine lobe oil sump normally maintained by the engine keep warm systems. An exception to this definition is the engine conditions that exist when performing the hot restart test following_the 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months EDG endurance run.. When performing this test, the engine is near normal operating temperature when in a " standby condition". Additionally, this definition includes the allowance to perform engine prelubrication prior to all planned test starts.

The Diesel Generator Test Schedule. Table 4.8-1 has been developed for the purpose of determining testing requirements based on the number of failures and valid tests using the example provided in Generic Letter-84-15 using a per diesel generator unit basis..The criteria of R.G.1.108 position C.2.e is used for criteria determination.

Containment electrical penetrations and penetration conductors are protected by either de-energizing circuits not required during reactor operation or by demonstrating the OPERABILITY of primary and backup overcurrent protection circuit breakers during periodic surveillance.

ARKANSAS - UNIT 2 B 3/4 8-1 Amendment No.141

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