ML20063C962

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Proposed TS Section 15.3.0, General Considerations
ML20063C962
Person / Time
Site: Point Beach  NextEra Energy icon.png
Issue date: 01/26/1994
From:
WISCONSIN ELECTRIC POWER CO.
To:
Shared Package
ML20063C952 List:
References
NUDOCS 9402070265
Download: ML20063C962 (10)
v • d • e


Text

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4 normal power source is inoperable, the system, subsystem, train, component or device may be considered operable for.the purpose of satisfying the requirements of.the applicable LCO, e provided: {4-} flS~Th^e..T.ii,li.^iT..sS.~15 the alternate power source (normal or x emergency)isoperableyand(2)h$ M fjM] aM redundant system (s), subsystem (s), train (s), components (s) and device (s) are operable. If either eend+t4en (1) er (2) 15T3T0!D.._IW6,.Pf573?6_?D?? cannot be met, specifications 15.3.0.A and 15.3.0.B become applicable. This specification is not applicable during cold shutdown or refueling shutdown conditions. OE. A momentary loss of normal or emergency power resulting in p765{4mmed!t+correctiveorrequiredactioninaccordance-I with Table 15.3.5-2, i.e., placing associated channels into 'l the trip condition or shutdown of the unit, shall not be. interpreted as causing a violation of the specification with respect to minimum operable channels or minimum degree of-redundancy, unless said loss is the result of _er.so_nn l;p.- - e.- operatee error or procedural violation. s 7E is u a.7 w~ mas n &&+ E. a.n sv^wwyd.<..i, pm:siit. ~w ~EiB.a..ils^d7 ff6ETsiRT(^ s?iEd5E1 FEdKfnBp. sFibiFF5 s + 4.av

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t 4160-voM-bu s es-A03-a nd-A 044e-en erg i f ed-fee-t he-unM-t o-be-t a k en-e e414e ah-Spee4 flea 14en 15. 3. 7. B.1. d - permfto-either4us-A03-oe-A04-te4e-teken-out-of serv 4ee-foe-up-t+-seven-days-provided40th-d4esel-generatees-are-operaMc cad-the assoel ated-d 4 ese4-gene ra toeds-opera ting-end-prov4 ding-power-to-the-engineered safeguard-bus-normaMy-supp14e44y-the cut-cf teevice4u:. If ine-def4aM4en-of operable-were-app 14ed-without-cons 4deeat4en-of-Specif4cet4en -15.3.0.C, cM systems -subsystems -t+a4ns;-component +,-and-dev4ees-supplied by the inoperaMe r r normal-powee-sourcesy4. c., the-out-of-serv 4ee - bu A01-ee-A04}-would-elso4e 4noperaMe. This-would-4 nvoke-the-app 14 eaMe-est4 en-sta tement+-fee-eac h-of-the app 14eaMe4000. Mcwcver, the-peov4+4 ens-of-tMs-Speeff4 eat 4en - 15.3.GrG-permit t he-14me-44mit-fe e-cont 4nued-opera t4en-to4e-consistent-with-the-aet4en-s tatement for the i 9eraMe-normal-powee-sourc+;-in-this-ease-seven-days, prev 4ded-the ot her-spee444 ed-co ndit4 ens-ere-s a t4s f4ed. These-cond4t4en crc that-fee-the engi neered-sa fegua rds-sys tems-en-ene4u s-the-emergencepowee-souece-must-be operaMe-fas-must-be-the-components-suppl 4ed4y4he-emergency-powee-sourc+)-and al4-redundant-systems, subsystems -trains -(+mponent+-and-dev4ces-4n-the-ether r r engineered-sofeguards-system: must-be-operable, or 14kewise-sat 4sfy-Spec 4f4 cat 4en 45r110.C (i.c., be-capaMe-of-performing-theie-des 4 n-funet4en-and-have-an i 9 emergency-powee-souree-epecaMe). In-ethee-wordsr-both-emergeney-powee-sources must4e-operable-end-al4-redundant-systems, cubsystems, tea 4nsr-cemponents-and devfees-4n40th-div4sions--cf cng4neered-safeguards-systems-must-o4so4e-opeeaMer-4f-these-cond it4 ens-a re-not-sa t4+f4 edr-s hu tdown-is-required-4n-aecordance-wMh this-spec 4f4ea14ent 4 n-the-cold-s hu tdown-and-re fuel 4ng-s hu tdown-c+nditionsr-Spec 4f4ea t4en 4Gr3-0.C h not-appl 4eaMe, and-thus-the-indiv4 dual-sc44en-statements-for-each appl 4ea ble4CO-4 n-these-condit4 ens-must4e-adhered-tor Spec 4f4 eat 4en 15.3.0.0-eddresses-the-mementery-loss-of-power to e component when-immed4ete-aet4 ends-4nM4eted resuM4ng-in rcenerg4*at4en-from-en-aMernate seuecc, teipping-the-channel-ef-4eg4e-ee-inM4414ng-operatoe-act4en c: ;pecifled 4n-Tame-15.3.5 2. Such-e-situ a t4en-d oes-not-con st4tu te-en-unsa fe-cendit4ent-Due4ng-the-sheet-perled-ef-the-correct 4ve or required-set 4ent-the-operatse-4-s sens44 ve-to-the-eend it4en-of-the-enM-and-the-poss4M e-effeeto-ef-the-legte systems -therefore-the-eec*erence-of-such-an-event-should-not-c+nst4 tete-a r violat4en-of-the specificat4en-with-respect-to-minimum operaMe-channel; cr minimum-degree-of-redundancyr Unit 1 Amendment 4kr.-60 15r3r0 5 June 24, 1981 Unit 2 Amendment 4!or-56

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The operable status of the various systems and components is to be demonstrated by periodic tests, defined by Specification 15.4.5. A large fraction of these tests 1 will be performed while the reactor is operating in the power range. If a component is found to be inoperable it will be possible in most cases to effect repairs and restore the system to full operability within a relatively short time. i for a single component to be inoperable does not negate the ability of the system to perform its function, but it reduces the redundancy provided in the reactor I design and thereby limits the ability to tolerate additional equipment failures. If it develops that (a) the inoperable component is not repaired within the specified allowable time period or (b) a second component in the same or related system is found to be inoperable, the reactor will initially be put in the hot shutdown condition to provide for reduction of the decay heat from the fuel, and consequent reduction of cooling requirements after a postulated loss-of-coolant accident. This will also permit improved access for repairs in some cases. After a limited time in hot shutdown, if the malfunction (s) are not corrected, the reactor will be placed in the cold shutdown condition, utilizing normal shutdown j and cooldown procedures. For example, specification 15.3.3.A.2.a allows one accumulator to be isolated or otherwise inoperable for periods of up to one hour. An inoperable accumulator may be defined as one with its outlet MOV shut, no pressure instrumentation operable, or water and/or nitrogen spaces cross-connected with the accumulator on the other loop. If the inoperable accumulator is not restored witin one hour then the conditions of specification 15.3.0.A and 15.3.0.B apply wMelsequires the cMeeted-enit, if criticci, to be in-hetahutdcwn within j three-heurs cnd in-eeM-shutdcun wfth4n-48 hours if the condition is-not corrected. In the cold shutdown condition there is no possibility of an accident that would release fission products or damage the fuel elements. The'specified repair times do not apply to regularly scheduled maintenance of the engineered safety systems, which is normally to be performed during refueling shutdowns. The limiting times to repair are based on: 1) Assuring with high reliability that the safety system will function properly if required to do so. 2) Allowances of sufficient time to effect repairs using safe and proper procedures. Unit 1 - Amendment No. 139 15.3.3-10 May 20, 1993 Unit 2 - Amendment No. 143-1 _}}

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