ML20005H118

Proposed Tech Specs Re Changes to ATWS Recirculation Pump Trip Specs

ML20005H118
Person / Time
Site:	Hatch
Issue date:	01/15/1990
From:	GEORGIA POWER CO.
To:
Shared Package
ML20005H113	List: ML20005H112 ML20005H118
References
NUDOCS 9001240159
Download: ML20005H118 (3)

Text

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g N,, ENCLOSURE 3~

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• PLANT-HATCH - UNIT 1 Ji ~. ,

NRC DOCKET 50-321 g]q[! m ..

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o- 0PERATING LICENSE DRP ';- ,

CHANGES TO ATWS-RPT SPECIFICATION PAGE CHANGE INSTRUCTIONS

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The-proposed change' s to the-; Plant' Hatch Unit' 1 Technical Specifications c 9 ' -(Appendix; A to Operating License DRP-57) will be incorporated as followsi  ;

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INSTRUMENTATION WHICH INITIATES RECIRCULATION PUMP TRIP , ,

C z Re f. instrument. ' Trip Requ i red Trip Setting Remarks Q No. -Condition Ope ra b l e (a) . Nomenclature Channels per Trip System -

1. Reactor Vessel Wa te r- Leve l Low ( Level 2) '2(*' 2-47 inches H 2 O Power must be reduced and the 'l (ATWS RPT)('S -mode switch placed in a. mode.'

other than the RUN Mode.

Reactor Pressure High 51095 psig 2.

(ATWS RPT)

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Power must be reduced and the mode switch placed in a mode -l:

other ' than the RUN Mode.

3. EOC - RPT(*) 1. -Turbine Stop 2' 1. Stop Valve Trips' recirculation pumps on Valve Closure 590% Open turbine control va lve fast

2. Turbine Control -2. Control Valve closure or stop valve closure Va lve Fast Hyd rau l ic when reactor is > 30%.

Closure ' Press -Trip Point

("' The column entitled "Ref. No." is only for convenience so that a one-to-one relationship can be established between items in Table 3.2-9 and items in Table 4.2-9.

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Whenever the reactor is in the RUN Mode, there shall be two operable trip systems for each parameter for 7

na each operating reci rculat ion pump. If the required number of operable channels cannot be met for one of the trip systems, place the inoperable channel in the tripped condition or take the indicated action within 14 days.

O If the requi red number of operable channels cannot be met for both trip systems, take the indicated action

__ within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

(*) Anticipa ted T ransients Wi thout Sc ra m - Rec i rcu l a t ion Pump T rip

(") End of Cycle - Reci rculatioh Pump Trip

( ' Either of these two EOC - RPT systems can trip both recirculation pumps. Each EOC - RPT system will trip if T 2-out-of-2 fast closure signa l s or 2-out-of-2 stop va lve signa l s a re received.

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u The requ i remen t for these channels applies f rom EOC-2000 MWD /t to EOC. The RPT rystem may be placed in an inoperable O sta tus for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to provide the required monthly surveillance. If one ECC-RPT: system is inoperable for g .

<n longer than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or if both EOC-RPT systems are simultaneously inoperable, an orderly power reduction will be cL immediately i n i t i a ted a nd rea c to r powe r wi l l be <30% within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

-A vi ( Each ATWS-RPT system will trip if 2-out-of-2 g Eitherreactor of theselowtwo ATWS-RPT water systems level signals can trip both or 2-out-of-2 recirculation reactor high pressure pumps.signals are received.

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CHECK AND CAllBRATION MINIMUM FREQUENCY FOR I NSTRUMENT AT I ON' -

• Q WHICH. INITIATES RECIRCULATION PUMP TRIP

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Re f. Instrument Check Instrument Funct'onal i Test instrument Calibration -

w No. Instrument MinimumsFrequency - Minimum Frequency Minimum Frequency , " '

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Once/ shift 1 Reactor Vessel Water Level -Once/ month. Once/ ope ra t i ng ' cyc le -

(ATWS RPT)'** '~' - -~' ' ' ~' ~ .: l-. .

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2 Reactor Pressure Once/ shift Once/ month 1 Once/ operating cycle ;

{ATWS RPT) - ~ " ' ~ - .-- - - 1 l5 - , :-:

3 EOC - RPT Trip. .

a) Initiating Logic None Once/ month .

None.

b) B rea ke rs None Once/ operating cycle None c) Response Time 'None None Once/ operating cycle '

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w Notes for Table 4.2-9 "-

7(a) The column entitled "Ref. No." is only for convenience so that a nne-to-one relationship can be g established between items in Table 3.2-9 and i tems in Table I:.2-9

~~ (b) An ATWS reci rcu la t ion pump trip lovlic system functional test shall be performed coce per operating cycle.

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