ML20205G473

Amend 231 to License DPR-65,revising Certain DG Action Statements & SR to Improve Overall DG Reliability & Availability

ML20205G473
Person / Time
Site:	Millstone
Issue date:	03/12/1999
From:	Adensam E NRC (Affiliation Not Assigned)
To:
Shared Package
ML20205G477	List: ML20205G473 ML20205G478
References
NUDOCS 9904070258
Download: ML20205G473 (12)

Text

1 p'OSo Cro"%,&

.o UNITED STATES pe

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NUCLEAR REGULATORY COMMISSION

't WASHINGTON, D.C. 20555-4J01 NORTHEAST NUCLEAR ENERGY COMPANY THE CONNECTICUT LIGHT AND POWER COMPANY THE WESTERN MASSACHUSETTS ELECTRIC COMPANY DOCKET NO. 50-336 MILLSTONE NUCLEAR POWER STATION. UNIT NO. 2 j

AMENDMENT TO FACILITY OPERATING LICENSE Amendment No. 231 License No. DPR-65

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

A. The application for amendment by Northeast Nuclear Energy Company, et al. (the licensee) dated July 17,1998, as supplemented by letters dated November 10,1998, and February 11,1999, complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and 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; i

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 Commission's regulations and all applicable requirements have been satisfied.

9904070258 990312 PDR ADOCK 05000336 P

PDR

L I

2. Accordingly, the license is amended by changes to the Technical Specifications as indicated in the attacnment to this license amendment, and paragraph 2.C.(2) of Facility Operating License No. DPR-65 is hereby amended to read as follows:

(2) 'lechnical Specifications The Technical Specifications contained in Appendix A, as revised through Amendment No. 231, are hereby incorporated in the license. The licensee shall operate the facility in accordance with the Technical Specifications.

3. This license amendment is effective as of the date of issuance, to be implemented within 60 days of issuance.

FOR THE NUCLEAR REGULATORY COMMISSION Elinor G. Adensam, Director Project Directorate 1-2 Division of Licensing Project Management Office of Nuclear Reactor Regulation

Attachment:

Changes to the Technical Specifications Date of Issuance:

March 12, 1999

b:

l ATTACHMENT TO LICENSE AMENDMENT NO. 231 i

FACILITY OPERATING LICENSE NO. DPR-65 DOCKET NO. 50-338 i

Replace the following pages of the Appendix A, Technical Specifications, with the attached pages. The revised pages are identified by amendment number and contain verticalli:1es indicating the areas of change.

Remove Insert l

3/4 8-1 3/4 8-1 3/4 8-2 3/4 8-2 3/4 8-2a 3/4 8-2a 3/4 8-3 3/4 8-3 3/484 3/484 3/4 8-5 3/4 8-5 8 3/4 8-1 B 3/4 8-1 B 3/4 8-1a B 3/4 8-1b l

i i

1 i

l

3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES OPERATING 7

LINITING CONDITION FOR OPERATION 3.8.1.1 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

l a.

Two physically independent circuits between the offsite trans-mission network and the onsite Class lE distribution system, and l

b.

Two separate and independent diesel generators each with a l

separate fuel oil supply tank containing a minimum of 12,000 l

gallons of fuel.

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

ACTION:

Inoperable Equipment Required Action a.

One offsite a.1 Perform Surveillance Requirement 4.8.1.1.1 circuit for remaining offsite circuit within I 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 i

a.2 Restore the inoperable 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 H0T 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.

One diesel b.1 Perform Surveillance Requirement 4.8.1.1.1 generator for the offsite circuits within I 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 b.2 Demonstrate OPERABLE diesel generator is not inoperable due to common cause failure within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or perform Surveillance Requirement 4.8.1.1.2.a.2 for the OPERABLE diesel. generator within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

AND b.3 Restore the inoperable diesel 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 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 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 />.

l MILLSTONE - UNIT 2 3/4 8-1 Amendment No. JJ, J//, JJ/,231 0353

ELECTRICAL POWER SYSTEMS l

ACTION (Continued)

Inoperable Equipment Required Action c.

One offsite c.1 Perform Surveillance Requirement 4.8.1.1.1 circuit for remaining offsite circuit within I 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 AND One diesel generator c.2 Demonstrate OPERABLE diesel generator is not inoperable due to common cause failure within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or perform Surveillance Requirement 4.8.1.1.2.a.2 for the OPERABLE diesel generator within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

AND c.3 Restore one inoperable A.C. source to OPERABLE status wichin 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> or be in HOT STANDBY rithin 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 />.

AND C.4 Restore remaining inoperable A.C. source to OPERABLE status following the time requirements of Action Statements a or b above based on the initial loss of the remaining inoperable A.C. source.

d.

Two offsite d.1 ' Restore one of the inoperable offsite circuits sources to OPERABLE status within 2A hours or be in 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 d.2 Following restoration of one offsite source restore remaining inoperable offsite source to OPERABLE status 1

I following the time requirements of Action j

Statement a above based on the initial i

loss of the remaining inoperable offsite source.

i NILLSTONE - UNIT 2 3/4 8-2 Amendment No. #7 777 231 j

0353

ELECTRIC 8L POWER SYSTENS ACTION (Continued) l l

1 l

[

l Inoperable Equipment Required Action e.

Two diesel e.1 Perform Surveillance Requir e nt 4.8.1.1.1 i

generators for the offsite circuits within i ho"r and at l w.t once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter.

)

AND e.2 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 HOT STANDBY within the next 6 hcurs 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 />.

AND l

l e.3 Following restoration of one diesel l

generator restore remaining inoperable l

diesel generator to OPERABLE status 1

following the time requirements of Action l

Statement b above based on the initial loss of the remaining inoperable diesel

)

generator.

9 SURVEILLANCE REQUIRENENTS 4.8.1.1.1 Verify correct breaker alignment and indicated power available for each required offsite circuit at least once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

4.8.1.1.2 Each required diesel generator shall be demonstrated OPERABLE:*

a.

At least once per 31 days on a STAGGERED TEST BASIS by:

1.

Verifying the fuel level in the fuel oil supply tank, 2.

Verifying the diesel starts from standby conditions and accelerates to 2 90% of rated speed and to 2 97% of rated voltage.** A modified start involving idling and gradual acceleration to synchronous speed may be used as recommended by the manufacturer.

If a modified start, as just defined, is not used, the requirements of Surveillance Requirement 4.8.1.1.2.d.1 apply for this test.

3.

Verifying the generator is synchronized and loaded in accordance with the manufacturer's recommendations to 2 1300 kW and operates with a load 2 1300 kW for 2 60 minutes.**

l

• All diesel starts may be preceded by an engine prelube period,

• • Performance of Surveillance Requirement 4.8.1.1.2.d satisfies this Surveillance Requirement.

NILLSTONE - UNIT 2 3/4 8-2a Amendment No. ///,231 0363

r:

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) 1 b.

At least once per 92 days by verifying that a sample of diesel fuel from each of the three fuel oil storage

tanks, obtained in accordance with ASTM

D4057, is within the acceptable limits specified in Table 1 of ASTM D975 when checked for viscosity, water and sediment.

I At least once per 18 months during shutdown by:

c.

1.

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

I 2.

Verifying that the automatic time delay sequencer is OPERABLE with the following settings:

Sequence Time After Closing of Diesel Generator Sten Outout Breaker (Seconds)

Minimum Maximum a,i 1 (T )

1.5 2.2 3

2 (T )

Ti + 5.5 8.4 j

2 i

h 3 (T )

T2+ 5.5 14.6 3

4 (T )

T + 5.5 20.8 4

3 3.

Verifying the generator capability to reject a load of 1250 kw and maintain voltage at 4160 i 500 volts and frequency at 60 i 3 Hz.

i t

4.

Verifying the generator capability to reject a load of 1300 Kw without. exceeding the overspeed trip setpoint.

5.

Simulating a loss of offsite power in conjunction with a safety

./

injection actuation signal, and:

a)

Verifying deenergization of the emergency busses and load shedding from the emergency busses, s

b)

Verifying the diesel starts from standby conditions on the l l

autostart

signal, energizes the emergency busses with permanently connected

loads, energizes the auto-connected emergency loads through the load sequencer and operates for 2 5 minutes while its generator is loaded 1

with the emergency loads, f

f

/

i

.NILLSTONE-UNIT 2 3/4 8-3 Amendment No. JJJ,231 i.

0353-

1 Y,*

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIRGENT (Continued) c)

Verifying that on the safety injection actuation signal, all diesel generator trips, except engine overspeed, generator differential current, voltage restraint overcurrent, and low lube oil pressure (2 out of 3) are automatically bypassed.

6.

Verifying the diesel generator operates for 2 60 minutes while loaded to 12750 kw.

7.

Verifying that the auto-connect 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 2000 kw.

8.

Verifying that on an actual or simulated Safety Injection Actuation Signal (SIAS) without a loss of offsite power:

a.

The diesel generator starts from standby conditions on l

the auto-start signal and operates on Standby for greater than 5 minutes; b.

The generator frequency and voltage shall reach 58.8 to 61.2 Hertz, and 3740 to 4580 VAC, and be maintained during this test; The diesel start time (time to reach 90% of rated speed c.

and 97% of rated voltage) shall be less than or equal to 15 seconds.

d.

At least once per 184 days by:

1.

Verifying the diesel starts from standby conditions and acce'erates to 2 90% of rated speed and to 2 97% of rated voltage wi N n 15 seconds after the start signal.

2.

Verifying the generator is synchronized and loaded in accora. ace with the manufacturer's recommendations to 2 1300 kW and operates with a load 21300 kW for 2 60 minutes.

MILLSTONE - UNIT 2 3/4 8-4 Amendment No. Q, Jpf, J7J 231 0'53

r-j ELECTRICAL POWER SYSTEMS SHUTD0W l

LINITING COMITION FOR OPERATION-q i.

l 3.8.1.2 As a minimum, the following A.C. electrical power sources shall l

be' OPERABLE:

a.

One circuit between the offsite transmission network and the onsite i

l Class lE distribution system, and i

b.

One diesel generator with a fuel oil supply tank containing a minimum of 12,000 gallons of fuel.

APPLICABILITY: MODES 5 and 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 or movement of irradiated fuel assemblies.

SURVEILLANCE REQUIRENENTS 4.8.1.2 The above required A.C. electrical power sources shall be demonstrated OPERABLE per Surveillance Requirements 4.8.1.1.1 and 4.8.1.1.2, except for testing pursuant to Surveillance Requirements 4.8.1.1.2.a.3, 4.8.1.1.2.c.2, 4.8.1.1.2.c.5, and 4.8.1.1.2.d.2.

l 1

f C LLSTONE - UNIT 2 3/4 8-5 Amendment No. #7, 231 0353

3/4.8 ELECTRICAL POWER SYSTEMS BASES 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 indepen-i dent 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 required circuits between the offsite transmission network and the i

onsite Class 1E distribution system (Station Busses 24C, 240, and 24E) that satisfy Technical Specification 3.8.1.1.a (MODES 1, 2, 3, and 4) consist of the following:

1.

At least two of the four 345 kV transmission lines (310 Line, 348 Line, 371 Line, and 383 Line) that tie the switchyard to the grid are in service with their switchyard breakers closed.

AND 2.

The following circuits from the switchyard to the onsite electrical distribution system:

a.

Station safeguards busses 24C and 24D via the Unit 2 Reserve Station Service Transformer and bus 24G; and b.

Station bus 24E via the Unit 1 Reserve Station Service Transformer or Unit 1 Normal Station Service Transformer (backfeeding) and bus 14H.

The required circuit between the offsite transmission network and the onsite Class IE distribution system (Station Busses 240, 240, and 24E) that satisfies Technical Specification 3.8.1.2.a (MODES 5 and 6) consists of the following:

1.

At least one of the four 345 kV transmission lines (310 Line, 348 Line, 371 Line, and 383 Line) that tie the switchyard to the grid are in service with their switchyard breakers closed.

AND 2.

The following circuit from the switchyard to the onsite electrical distribution system:

a.

Station safeguards bus 24C or 24D via the Unit 2 Reserve Station Service Transformer and bus 24G: or b.

Station bus 24E via the Unit 1 Reserve Station Service Transformer or Unit 1 Normal Station Service Transformer (backfeeding) and bus 14H.

NILLSTONE - UNIT 2 B 3/4 8-1 Amendment No. J7p, J7g, 231 0364 m

3/4i8 ELECTRICAL POWER SYSTEMS BASES W

When the plant is uperating.with the main generator connected to the grid, the output of the main generator will normally be used to supply the onsite Class IE distribution system. During this time the required offsite circuits will be in standby, ready to supply power to the onsite Class IE distribution system if the main generator is not available. When shut down, only one of the offsite circuits will normally be used to supply the onsite Class IE distribution system. The other offsite circuit, if required, will be in standby. Verification of the required offsite circuits consists of checking control' power to the breakers (breaker indicating lights), proper breaker position for the current plant configuration, and voltage indication as appropriate for the current plant configuration.

The ACTION requirements specified for the levels of degradation of the power sources 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 of each of i

the 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, i

Technical Specification 3.8.1.1 Action Statements b and c provide an allowance to avoid unnecessary testing of the other OPERABLE diesel generator.

If it can be determined that the cause of the inoperable diesel generator does not exist on the OPERABLE diesel generator, Surveillance Requirement 4.8.1.1.2.a.2 does not have to be performed.

If the cause of inoperability exists on the other OPERABLE diesel generator, the other OPERABLE diesel generator would be declared inoperable upon discovery, Action Statement e would be entered, and appropriate actions will be taken.

Once the failure is corrected, the comon cause failure no longer exists, and the required Action Statements (b, c, and e) will be satisfied.

If it cannot be determined that the cause of the inoperable diesel generator does not exist on the remaining diesel generator, performance of Surveillance Requirement 4.8.1.1.2.a.2, within the allowed time period, suffices to provide assurance of continued OPERABILITY of the diesel generator.

If the inoperable diesel generator is restored to OPERABLE status prior to the determination of the impact on the other diesel generator, evaluation will continue of the possible comon cause failure.

i This continued evaluation is no longer under the time constraint imposed while in Action Statement b or c.

The determination of the existence of a comon cause failure that would affect the remaining diesel generator will require an evaluation of the current failure and the applicability to the remaining diesel generator.

Examples that would not be a comon cause failure incit.de, but are not limited to.

l 1.

Preplanned preventive maintenance or testing, or 2.

An inoperable support system with no potential comon mode failure for the remaining diesel generator, or i

NILLSTONE - UNIT 2 B 3/4 8-la Amendment No. Jpp, Jpf,231 0364

c

.3/4.8 ELECTRICAL POWER SYSTEMS l

BASES 3.

An independently testable component with no potential common mode failure for the remaining diesel generator.

During performance of Surveillance Requirements 4.8.1.1.2.a.2 and 4.8.1.1.2.d.2, the diesel generators shall be started by using one of the following signals:

1.

Manual;

?..

Simulated loss of offsite power in conjunction with a safety injection actuation signal; i

3.

Simulated safety injection actuation signal alone; or 4.

Simulated loss of power alone.

The diesel generator surveillance requirements specify that the diesel generators are started from a standby condition.

diesel generator means the diesel engine coolant and oil are being circulated Standby conditions for a

)

and temperature is being maintained consistent with manufacturer recommendations.

Surveillance Requirement (SR) 4.8.1.1.2.d.1 veri'ies that the diesel generators will reach > 90*,' of rated speed and 15 seconds after a start signal is generated. 2 97% of rated voltage within The time for voltage and speed (frequency) to stabilize l

monitored and the trend evaluated to identify degradation of governor or voltage regulator performance when testing in accordance with the requirements of SR 4.8.1.1.2.d.l.

The OPERABILITY of the minimum specified A.C.and D.C. power sources and associated distribution systems during shutdown and refueling ensures that 1) condition for extended time p riods and 2)the facility can be maintaine sufficient instrumentation and control capability is available for monitoring and maintaining the l

facility status.

I The non-safety grade 125V D.C. Turbine Battery is required for coincident loss of a vital D.C. bus. accident mitigation for a main steam line The Turbine Battery provides the grade Inverters 5 & 6. alternate source of power for Inverters 1 & 2 respectively For the loss of a D.C. event with a coincident steam line break within containment, the feedwater regulating valves are required to close to ensure containment design pressure is not exceeded.

The feedwater regulating valves require power to close.

via the Turbine Battery ensures power is available to the affec On loss the faulted generator.feedwater regulating valve such th'. the valve will isolate fee bus The Turbine Battery is considered inoperable when MILLSTONE - UNIT 2 C364 B 3/4 8-lb Amendment No. Jpp, J77,231