ML20217N732

Proposed Tech Specs Pages,Revising Frequency for Performance of Specific Surveillances & Deleting Requirements for Accelerated Testing When Number of Valid Test Failures Associated W/Edgs Is Met or Exceeded

ML20217N732
Person / Time
Site:	Seabrook
Issue date:	03/02/1998
From:	NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:
Shared Package
ML20217N721	List: ML20217N716 ML20217N723 ML20217N732
References
NUDOCS 9803090168
Download: ML20217N732 (16)

Text

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INDEX LIMITING CONDITIONS FOR OPERATION AND SURVEILLANCE REQUIREMENTS  ;

SECTION PAGE 3/4.7.2 STEAM GENERATOR PRESSURE / TEMPERATURE LIMITATION.......... 3/4 7-11 3/4.7.3 PRIMARY COMPONENT COOLING WATER SYSTEM................... 3/4 7-12 3/4.7.4 3/4.7.5 SERVICE WATER SYSTEM..................................... 3/4 7-13 )

3/4.7.6 ULTIMATE HEAT SINK....................................... 3/4 7-14 )

CONTROL ROOM EMERGENCY MAKEUP AIR AND FILTRATION 3/4.7.7 SUBSYSTEM................................... .......... 3/4 7-16,

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3/4.7.8 SNUB 8ERS...................................... .......... 3/4 7-19 i

SEALED SOURCE CONTAMINATION.............................. 3/4 7-20 3/4.7.9 (This speification number is not used). . . . . . . . . . . . . . . . . . 3/4 7-22 3/4.7.10 AREA TEMPERATURE MONITORING.............................. 3/4 7-23 TABLE 3.7-3 AREA TEMPEP.ATURE M0NITORING........................... 3/4 7-24 3/4.8 ELEC1RICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES 0perating................................................ 3/4 8-1 TABLE 4.8-1 hIfdEL SfNERATOR 7tSi SCHEI)N#!!.rgggwn,i,s,q.r,ursh)3/4 8-10 Shutdown..................................;.............. 3/4 8-11 f.].) 3/4.8.2 D.C. SOURCES 0p>erating........................ ....................... 3/4 8-12 TABLE 4.8-2 BATTERY SURVEILLANCE REQUIREMEN'lS..................... 3/4 8-14 Shutdown............ .................................... 3/4 8-15 3/4.8.3 ONSITE POWER DISTRIBUTION Operating................................................ 3/4 8-16 Shutdown................................................. 3/4 8-18 Trip Ci rcui t for Inverter I-2A. . . . . . . . . . . . . . . . . . . . . . . . . . . 3/4 8-19 3/4.8.4 ELECTRICAL EQUIPMENT-PROTECTIVE DEVICES A. C. Circuits Inside Primary Containment. . . . . . . . . . . . . . . . . 3/4 8-20 Containment Penetration Conductor Overcurrent Protective Devices.and Protective Devices for Class 1E Power Sources Connected to Non-Class a 1E Circuits............................................ 3/4 8-21 Motor-Operated Valves Thermal Overload Protection.. .... .. 3/4 8-24 3/4.9 REFUELING OPERATIO_NS 3/4.9.1 BORON CONCENTRATION.........../.......................... 3/4 9-1 3/4.9.2 INSTRUMENTATION.......................................... 3/4 9-2 3/4.9.3 DECAY TIME............................................... 3/4 9-3 9903090168 990302 PDR ADOCK 05000443 P PDR " i RAtlRo0K - UN11 1 viii i l

ELECTRICAL POWER SYSTEMS i A.C. SOURCES

.--  ; QPERATING l SURVEILLANCE REQUIREMENTS I I

i 4.8.1.1.1 Each of the above required independent circuits between the offsite  !

' transmission network and the Onsite Class 1E Distribution System shall be: j

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

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

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:*

At. LEMr oncC fra. 3 I dotySW l

a. 6gtoruTncywgh the ffequehcyf4pe9ffief iryTagle p((8 f on a  !

STAGGElflE0 TEST BASIS by.  ;

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1) Verifying the fuel level in the day fuel tank;

2) Verifying the fuel level in the fuel storage tank; ,

3) Verifying the fuel transfsr pump starts and transfers fuel I

- from the storage system to the day tank;

4) Verifying the lubricating oil inventory in storage;

, 5) Verifying the diesel starts from standby conditions and 6

attains a generator voltage and frequency of 4160 i 420 volts l and 60 i 1.2 Hz within 10 seconds after the start signal.

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

a) Manual, or b) Simulated loss-of-offsite power by itself, or l *All planned starts for the purpose of these surveillances may be preceded by an engine prelube period.

v,M SEABROOK - UNIT 1 3/4 8-3 Amendment No.. W

ELECTRICAL POWER SYSTEMS l A.C. SOURCES

, l OPERATING SURVEILLANCE REQUIREMENTS l

4.8.1.1.2(Continued)  ! '

h. At least once per 10 years by:

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1) Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solution, or 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 i Codeatatestpressureequalto110%ofthesystemdesign l pressure.

l 4.8.1.1._3 eDT 1 iese7 gen roe r or at tne 'ssior/in a peci 1 Re ) ort pur uantator fail6.des, SpecicatAn 2 va 'iII wit in d s. por s of# fiese gen ator failur shall inclu the .nfo -

i ti n r in gulatory P siti C. b of R ulato Guid 1.10 Rev '

sfon ,A nded/'77 ust 9 If he nyuber fa' ures i he la t 100 alid e,st (on j 4 pe nu ear ni asi is feate tha or equ to 7 ort all e sup 1 ted o ' cludt he diti nal ' format'on rec , the nde in R gula ry pitinC..b Reg;r' ato Gui 1.1 , Revi ion 1, ugust 977.

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- 't.y SEABROOK - UNIT 1 3/4 8-9 Amendment No.

gg gett >8E/L ff NoT & ) Q BLE 4.8-1 D M ERATOR TES1k CHEDULE .

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N R OF FAILURES' N NUMBER OF ILURES IN LAST 20 VALID TESTS *( LAST 100 VA U TESTS

• TEST FREQUE Y

<1 <5 A least once er 31 da s E2 E6 At least once p r 7 days

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I*Ckitariafordetermini the number of fa lures and number of valid tests be)in accordance with Regulatory Position k2.e of Regulatory uide 1.108, all '!

Re ision 1, August, 197 but determined on a per diesel genera' tor basis. ,

For the purpose of deters $ning the required st frequency, the p vious tes failure count may be\ reduced to zero if a\ complete diesel ov aul to like new condition is comp 1,eted, provided that the overhaul, inc1 ng app riate post-maintenancy operation and testig, is specifically(approved by t a manufacturer and if acceptable reliability has be.on demonstrated. The re'f. f 111tycriterionshallbethesuccessfulcouSletionof14 consecutive tests in a single series in a'ccordance with the rohtine Survillance Require- j ments f 4.3.1.1.2.a.5 and 4.8 1 If this riterion is not satisfied duringthefirstseriesoftasks.1.2.a.6.,anyalternatecri(te,riontobeusedto transv lue the failure count to zero requires NRC val.

• • This te t frequency shall be mai6tained until seven cohpecutive failure-free \

demands have been performed and the number of failures in the last 20 valid \

demands 9asbeenreducedtooneor\less. \

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I SEABROOK - UNIT 1 3/4 8-10 Amendment No.A F l

ELECTRICAL POWER SYSTEMS A.C'. SOURCES SHUTDOWN LIMITING CONDITION FOR OPERATION '

3.8.1.2 As a minimum, the following A.C. elect'rical 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 fuel tank containing a minimum fuel vol:tae fraction of 3/8 (600 gallons of fuel),

2) A fuel storage system containing a minimum volume of 60,000 gallons of fuel,

3) A fuel transfer pump,

4) Lubricating oil storage containing a minimum total volume of 275 gallons of lubricating oil, and h

5) Capability to transfer lubricating oil from storage to the diesel generator unit.

APPLICABILITY: MODES 5 and 6.

ACTION:

With less than the above minimum required A.C. electrical power sources OPERABLE, immediately suspend all operations involving CORE ALTERATIONS, positive reactivity changes, movement of irradiated fuel, or crane operation with loads over the fuel storage pool, and within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, riepressurize and vent the Reactor Coolant System through a greater than or equal to 1.58-square-inch vent. In addition, when in H0DE 5 with the reactor coolant loops not filled, or in MODE 6 with the water level less than 23 feet above the reactor vessel flange, immediately iiiitiate corrective action to restore the required sources to OPERABLE status as soon as possible.

, SURVEILLANCE REQUIREMENTS

4. 8.1. 2 The above required A.C. electrical power sources shall be demonstrated OPERABLE by the performance of each of the requirements of Specifications 4.8.1.1.la 4.8.1.1.2a [except for Specification 4.8.1.1.2a.6]y p 4g .p l. .

- au 3/4 8-11 0

SEABROOK - UNIT 1 [Q

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Section III Retype of Proposed Changes i

The attached retype reflects the currently issued version of the Technical Specifications. Pending Technical Specification changes or Technical Specification changes issued subsequent to this submittal are not reflected in the enclosed retype. The enclosed retype should be checked for continuity with Technical Specifications prior to issuance.

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LIMITING CONDITIONS FOR OPFRATION AND SURVEILLANCE REGUIREMENTS l l

! SECTION PAGE 3/4.7.2 STEAM GENERATOR PRESSURE / TEMPERATURE LIMITATION .. 3/4 7-11 3/4.7.3 PRIMARY COMPONENT COOLING WATER SYSTEM . . 3/4 7-12 3/4.7.4 SERVICE WATER SYSTEM . . .. . 3/4 7-13 3/4.7.5 . ULTIMATE HEAT SINK . . . . . . . . . . . . . . . 3/4 7-14 3/4.7.6 CONTROL ROOM EMERGENCY MAKEUP AIR AND FILTRATION SUBSYSTEM . . . . .. . 3/4 7-16 3/4.7.7 SNUBBERS . . . . . . . . . . . .. . . 3/4 7-19 3/4.7.8 SEALED SOURCE CONTAMINATION . .. ... 3/4 7-20 3/4.7.9 (This specification number is not used) . .. 3/4 7-22 3/4.7.10 AREA TEMPERATURE MONITORING .. ... .. 3/4 7-23 TABLE 3.7-3 AREA TEMPERATURE MONITORING ... . . 3/4 7-24 3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES Operating . . .. . . . 3/4 8-1 TABLE 4.8 1 (THIS TABLE NUMBER IS N01 USED) . . . 3/4 8-10 Shutdown 3/4 8-11 l

3/4.8.2 D.C. SOURCES Operating . . . .. . . 3/4 8-12 TABLE 4.8-2 BATTERY SURVEILLANCE REQUIREMENTS . ... . 3/4 8-14 Shutdown . . . .. .. .. . 3/4 8-15 3/4.8.3 ONSITE POWER DISTRIBUTION 03erating . .

3/4 8-16 Slutdown . . . . . . . . . 3/4 8-18 Trip Circuit for Inverter I-2A.. . . . . 3/4 8-19 3/4.8.4 ELECTRICAL EQUIPMENT PROTECTIVE DEVICES I

A.C. Circuits Inside Primary Containment . . . . 3/4 8-20 Containment Penetration Conductor Overcurrent Protective Devices and Protective Devices for Class 1E Power Sources Connected to Non-Class l IE Circuits . . . . . ...... . .. 3/4 8-21 i Motor-Operated Valves Thermal Overload Protection . 3/4 8-24 3/4.9 REFUELING OPERATIONS 3/4.9.1 BORON CONCENTRATION . . . . . . 3/4 9 I 3/4.9.2 INSTRUMENTATION . . . 3/4 9-2

! 3/4.9.3 DECAY TIME . . . . ... . 3/4 9-3 SEABROOK - UNIT 1 viii Amendment No.

ELECTRICAL POWER SYSTEMS A.C. SOURCES

.'OPER$ TING SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required 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 verifyina i correct breaker alignments, indicated power availability, and

b. Demonstrated OPERABLE at least once per 18 months during shutdown  !

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

4.8.1.1.2 Each 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 day fuel tank;

2) Verifying the fuel level in the fuel storage tank;

3) Verifying the fuel transfer aump starts and transfers fuel from the storage system to t1e day tank:

4) Verifying the lubricating oil inventory in storage:

5) Verifying the diesel starts from standby conditions and attains a generator voltage and frequency of 4160 420 volts ]

and 60 1.2 Hz within 10 seconds after the start signal.

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

l a) Manual, or i l

b) Simulated loss-of-offsite power by itself, or l

• All planned starts for the purpose of these surveillances F.dy be preceded by an engine prelube period.

SEABROOK - UNIT 1 3/4 8-3 Amendment No. -14. 38

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l- ELECTRICAL POWER SYSTEMS A.C. SOURCES

.'OPERdTING SURVEILLANCE REOUIREMENTS 1  :

l 4.8.1.1.2 (Continued)

h. At least once per 10 years by:

i 1) Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite solution, or equivalent. and

2) Performing a pressure test of those portions of the diesel I

! fuel oil system designed to Section III, subsection ND of the 1 ASME Code at a test pressure equal to 110% of the system design pressure.

4.8.1.1.3 (THIS SPECIFICATION NUMBER IS NOT USED)

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SEABROOK - UNIT 1 3/4 8-9 Amendment No. 43 j

TABLE 4.8-1 (THIS TABLE NUMBER IS NOT USED)

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.SEABROOK - UNIT 1 3/4 8-10 Amendment No. M

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ELECTRICAL POWER SYSTEMS A.C. SOURCES

. SHUTBOWN LIMITING CONDITION FOR OPERATION l

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 fuel tank containing a minimum fuel volume fraction of 3/8 (600 gallons of fuel).

2) A fuel storage system containing a minimum volume of 60.000 gallons of fuel.

3) A fuel transfer pump, i

4) Lubricating oil storage containir.g a minimum total volume of 275 gallons of lubricating oil, and

5) Capability to transfer lubricating oil from storage to the diesel generator unit.

APPLICABILITY: MODES 5 and 6.

ACTION:

With less than the above minimum required A.C. electrical Sower sources OPERABLE. immediately suspend all operations involving CORE ALTERATIONS.

positive reactivity changes, movement of irradiated fuel, or crane operation 1 with loads over the fuel storage 2001, and within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, depressurize and '

vent the Reactor Coolant System t1 rough a greater than or equal to 1.58-square-inch vent. In addition, when in MODE 5 with the reactor coolant loops not filled, or in MODF 6 with the water level less than 23 feet above the reactor vessel flange. immediately initiate corrective action to restore the required sources to OPERABLE status as soon as possible.

SURVEILLANCE REQUIREMENTS l i

4.8.1.2 The above required A.C. electrical power sources shall be demonstrated

,PERABLE by the performance of each of the requirements of Specifications

.8.1.1.la. AND 4.8.1.1.2a [except for Specification 4.8.1 1.2a.6].

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L SEABROOK - UNIT 1 3/4 8-11 Amendment No.

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t Section IV Determination of Significant IIazards for Proposed Changes Page 6

l . IV.

• DETERMINATION OF SIGNIFICANT HAZARDS FOR PROPOSED CHANGES License Amendment Request (LAR) 97-06 proposes changes to Seabrook Station Technical Specifications (TS) 4.8.1.1.2a, 4.8.1.1.3, Table 4.8-1 and TS 4.8.1.2, as authorized by NRC Generic Letter (GL) 94-01, " Removal of Accelerated Testing and Special Reporting Requirements for Emergency Diesel Generators." The proposed changes will revise the frequency for performance of specific surveillances and delete the requirements contained in the current Technical Specifications for accelerated testing whenever the number of valid test failures associated with the Emergency Diesel Generators (EDGs) is met or exceeded. In addition, the special requirements for reporting valid or invalid EDG failures will be deleted.

In accordance with 10 CFR 50.92, North Atlantic has reviewed the proposed changes and has concluded that thty do not involve a significant hazards consideration (SHC). The basis for the conclusion that the proposed changes do not involve a SIIC is as follows:

1. The proposed changes do not involve a significant increase in the probability or consequences of an accident previously evaluated.

The proposed changes do not affect accident initiators or precursors and do not alter the design assumptions affecting the ability of the EDGs to mitigate the consequences of an accident.

Industry experience has indicated that excessive testing requirements have proven to be a contributor to increased EDG unavailability and equipment degradation. Removing inappropriate testing requirements increases EDG reliability and enhances the ability of EDGs to mitigate the consequences of an accident. Implementing the maintenance rule in accordance with 10 CFR 50.65, Regulatory Guide 1.160, and NUMARC 93-01 for the EDGs provides additional assurance that high EDG performance and availability will be maintained.

Deleting the special reporting requirements from the Technical Specifications is an administrative change that does not affect the ability of the EDGs to perform their specified safety function. North Atlantic will continue to notify the NRC of significant EDG failures in accordance with the provisions of 10 CFR 50.72 and 50.73.

Therefore, the proposed changes do not involve a signincant increase in the probability or consequences of an accident previously evaluated.

2. The proposed changes do not create the possibility of a new or different kind of accident from any previously analyzed.

The proposed changes do not alter the ability of the EDGs to perform their ircended function to mitigate the consequences of an initiating event within the acceptance limits assumed in the Updated Final Safety Analysis Report (UFSAR). The proposed changes have no impact on component or system interactions, or the plant design basis. Instrumentation setpoints, starting, I

sequencing and loading functions associated with the EDGs are not affected by the proposed changes. Furthermore, combining the implementation of the maintenance rule program with the proposed amendment will enhance both the availability and the performance of the EDGs.

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Therefore, the proposed changes do not create the possibility of a new or different kind of accident frcm any previously analyzed.

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3. The proposed changes do not involve a significant reduction in a margin of safety.

There is no impact on equipment design or operation and there arc no changes being made to the l Technical Specification required safety limits or safety system settings that would adversely affect plant safety. The proposed changes do not affect the EDG's ability to ensure thet

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j sufficient power is 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. In addition. the proposed changes do not affect the EDG's ability to ensure that: 1) the j facility can be maintained in a shutdown or refueling condition for extended periods of time, and 1

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

I EDG reliability and availability are expected to be improved by the proposed changes. J Eliminating excessive testing requirements can improve safety by reducing challenges to plant i systems and reducing equipment wear and degradation. While the proposed changes affect surveillance intervals there are no changes to the methods used to perform the surveillances. The surveillances will continue to demonstrate the ability of the EDGs to perform their intended function of providing electrical power to the emergency safety systems needed to mitigate design basis transients and accidents. Therefore, the proposed changes do not involve a significant )

reduction in a margin of safety.

l Based on the above evaluation, North Atlantic concludes that the proposed changes do not constitute a significant hazard.

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l Sections V & VI Proposed Schedule for License Amendment Issuance and Effectiveness and EnvironmentalImpact Assessment

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, V. P'ROPOSED SCHED81LE FOR LICENSE AMENDMENT ISSUANCE AND EFFECTIVENESS North Atlantic requests NRC review of License Amendment Request 97-06 and issuance of a license amendment by September 30,1998, having immediate effectiveness and implementation required within j 60 days.

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l VI. ENVIRONMENTAL IMPACT ASSESSMENT Nonh Atlantic has reviewed the proposed license amendment against the criteria of 10 CFR 51.22 for environmental considerations. The proposed changes do not involve a significant hazards consideration, nor increasc the types and amounts of cf tNent that may be released offsite, nor significantly increase individual or cumulative occupational radiation exposures. Based on the foregoing, North Atlantic concludes that the proposed change meets the criteria delineated in 10 CFR S t.22(c)(9) for a categorical '

exclusion from the requirements for an Environmental Impact Statement.

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