ML20042E878

Proposed Tech Specs,Revising Listed Sections for Surveillance Test Cycle Requirement to 24 Months for Eighth Cycle of Unit Operation Only

ML20042E878
Person / Time
Site:	North Anna
Issue date:	04/27/1990
From:	VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML20042E877	List: ML20042E876 ML20042E878
References
NUDOCS 9005030343
Download: ML20042E878 (5)

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REQUEST FOR TECHMican BMTsueuus op haOATH ANNA UNIT 1

, ,- spECiFicATICE - BURVElli ANCE TsRT INTERVALB REOUESTED CHANGE

- Currently, Nonh Anna Unit 1 Technical Specifications require the performance of  ;

certain cycles.

1efueling surveillance - tests at 10 month intervals to coincide with normal' l The proposed change is to extend these surveillance test intervals for the North' A Unit 1 eighth cycle by six months to compensate for several unanticipated ou the extended seventh refueling outage that occurred from February 25,1989 15,1989 and to permit optimum fuel bum up prior to refueling.

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l. SPECIFIC ONE-TIME CHANGES TO THE TECHNICt1 SPECIFICATIONE l' ~

l One time changes to the surveillance test intervals associated with a plant shutdow j or refueling outage as specified in the North Anna Unit 1 Technical Specifications for Operating License NPF 4 are requested as follows:

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The 10 month surveillance test cycle requirement as specified in the follo Technical unit operation Specifications only: sections is changed to 24 months for the eighth ic '

StGilan Survaillance Requirement t

4.1.2.2.c .

Verify on an Sieachsignal.volve in boron injection flow path actuates correctly 4.5.2.e Verify Si signal.each valve in ECCS subsystem actuates ccrrectly on an 4.6.2.1.c Verify each valve and spray purnp in quench spray subsystem actuates correctly on a containment High High signal. '

4.6.2.2.1.c 4 Verify each valve, casing cooling pump and spray pemp  ;

actuates correctly on a containment pressure High-High signal.

i 4.6.2.3.c g:

j Vettfy each valve in chemical addition system actuates cc:rectly (

( on a coraainment pressure High High test signal. '

4.6.3.1.2

[ Verify specific containment isolation valves operable during .

rnodo 5 and 6.

!. l L 4.7.1.2.b .

{ Verify each auxiliary feedwater pump and valves estuates l correctly on auxiliary feedwater actuation test signal.

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• 4.7.4.1.c Verify each Service Water valve servicing safety related equipment actuates correct isolation valve actuates cor$ on Si signal and containerent L

, ,. signal. rectly on containment High-High '

4.7.7.14 e Verify acceptable pressure drop across HEPA fitter and charcoal absorber, control room normal air supply and exhaust are

.- shutdown on Si actuation test signal, and correct control rocm pressure. '

4.7.8.1 d  ; n .

. Verify acceptable pressure drop across HEPA filter and charcoal-- ,

l' absorber and High testsigna!. correct exhaust flow path on containment High-  !

4.8.1.12.d Verify each diesel ger.erator operable during shutdown.

4.8.1.1.3.c Verify each diesel clenerator battery bank and ch'arger operable.

4.8.2.3.2.c.

Verify'each DC Bus train brittery bank and charger Mio. - '

4.8.2.3.2.d Serify each DO Bus train battery cape #4y is adequate.

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Table 1.2 of Section 1.0, Definitionn, which defines "R" as "At least once p months." ss it applies to the following Technical Specifications sections and related tables, and the 18 month requirement in the noto ln the tables indicate

' . below, are changed to 24 months fcithe eighth cycle rA unit operation j on 38Gunn Surs.aldsasaSilogramant t Table 4.3-1, Note (4) I Functionally kept reacto't trip system ,

instnamentation manual safety injoction input ffore ESFp i

Table 4.3 2, Note (1)  :

Veriff ESFAS instrumentation channel manual

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arAustion' switches are operable. '

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DIEURRarul OF REQUERY North Anna Unit 1 completed applicable Mode 4,5, and 6 surveillance seventh refuefhgf outage which ended on July 15,1989.

, It was considered unreasonable to repeat these curveillance tests during the several short una outages that have. occurred since then. However, these unplanned outages and t unexpected length of the cycle seven refueling outage has impacted the surve test' intervals between the seventh and eighth refuelin

' with additional time allowed for an optimum fuel bum g outa0es. This delay, together -

up before the next refueling, has  :

resulted 1991. in a deferral of the next refueling outage for North Anna Unit i un k

Specification 4.0.2 is an administrative control which ensures surveillance tests a ^

performed periodically and defines a reasonable period for the tests. The basis of:

Specification 4.0.2 describes the surveillance requirements as "sufficiently rest o

degraded beyond that obtained from the nominal sp  :

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involve an unroviewed safety question as defined in 1 .

margin of safety provided by the surveillance frequency required in Specification +

may be slightly reduced by lengthening the time between tems, in our judgeme reliability associated with the surveillance will not be significantly degraded b extension of the surveillance test interval. Surveillance tests will conti performed during the extension interve). Current monitoring instrumentation and :

ongoing systems remain Tschnical Specification in an operable surveillance tests ensure the affected equipme condition.

In addition, the applicable periodic test procedures associated with the last two >

surveillance completed. intervals have been reviewed and were found to have been is I

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r Attachment 3 10 CFR 50.92 Evaluation North Anna Power Station Unit 1 3

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i Virginia Electric and Power Company l

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o Y L ,. ,. a BASIS FOR NO SIGNIFICANT HAZQDS CONSIDERATION The proposed change does not invcive a'significant hazards consideration as defined in 16 CFR 50.92 because the extension of the North Anna Unit 1 operating period in accordance with thic change would not:

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' 1) , involve a significant increase in the pabability or consequences of .an l

accident previously evaluated. -Current monitoring instrumentation and onDoing Technical Specification surve3 lance- tests ensure the -  !

equipment and systems; involved in the extended surveillance interval a j

will remain in an operable condition until their inspection at the-. next = 1 L refueling outage.  ;

2) Create the possibility of a new or different kind of accident from any accident previously evaluated. Extending the interval for the s

l performance of specific surveillance tests does not create the  ;

possibility of a- new or different kind .of' accident. Periodic i surveillance tests have'been performed since the seventh outage to -

monitor system and component performance and to detect degradation.  ;

Surveillance tests will continue to be performed during the extension interval.

3) Involve a significant reduction in the margin of safety. Extending the interval for these specific surveillance tests for the eighth cycle of' North Anna Unit 1 does- not- significantly degrade the margin of safety.

Surveillance tests will continue to be performed. during theLextension interval. Current- monitoring instrumentation and ongoing Technical i

Specification surveillance tests ensare the affected equipment and systems remain in an operable condition.

Therefore, it has been concluded that the proposed change does not involve a significant hazards consideration.

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