Text

Proposed TS Rev to Table 3.3-1, Reactor Trip Sys Instrumentation Re Boron Dilution Mitigation Sys
	ML20091D666
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Site:	Comanche Peak
Issue date:	04/06/1992
From:	; TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	;
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ML20091D659	List: ML20091D656; ML20091D666;
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Att'achment to TXX-92169

~Page 2 of-7

' BLE ?. 3-1 (Centi vec) 9

'ABLE NOTAT:245 aOnly if the reacter trio treaxers rapren to ce in the closec :osition saa tre Centrol Roc Orive System is capacle of roc.itnara-al.

Uselo. tne

-E ('. ne eciate Range Neutrcn Flux :nterlock) Set:cint.

Below tne P-10 (Lc Se:00 int P0'.er Range Neutron Olux Intertoc()'5et;;:-t C

dAtove the-P-7 (At Oc er) Setccint

'ine applicable MODES and ACTION statements for these channels notec in Tacle 3.3-2 are more restrictive arc therefore, applicacle.

fA0cve the P-3 (3-leep flow permissive) Setpoint.

9Atove the P-7 anc telc-the 0-S 5et0ciats.

The caren cilution flux coucling signals may te blocked curing reactc startut h

i Above tne D-9 (Reacter trip on Turtine trio Interlock) Setpoint, ACTION 5TATEMENTS ACTION 1 - Witn the nutter af ODERABLE channels are less inan the * "

u-Cnanreis CPERABLE recuirement, restore ~'e inopera le cra" ei to 0:ERABLE status witnin AB hours er :- in HOT STAND 3Y.ita'n tne nemt 6 nours.

r ACT!:N 2

'.i n t"e cutter of 0;ERABLE cnannels 0 - less tnan tr4 Tctal t

Numcer of Cnannels, STARTUP anc/or DOWER OPERATION maj :veceec prc.: cec tre follo ing concitions are satisfied; a.

e inoceraole cnannel is placec in the tr ccec conciti:n i

itnin 6 nours, c.

The Minimem Cnannels OPERABLE recuirement is met; nc.e.er, tne inoptratie cnannel may ce byoassed for uo 10 A n0urs

'or surveillance testing of other enannels per 5:ecifica. ion A.3.1.1, and c.

E4 tner, THERMAL 10WER is restricted to less than er e:aal to 75'. of RATED TnERMAL POWER and tne Power Range Neutron i:

rb* Trio set;oint is recutec to less tnan or ecual ::

'EEi of DATED inERMAL PCwER ithin A nours; Or, tre

c t; ANT 00wE; TILT RATIO is monitorec at least orce: e" a

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'.2 s ues :er 5:ec fication A.2.A.2 m

E U Y}'

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y' p,e f,,

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Bcron inlution Flux Doubling requirements become effective for Unit I six months after criticality for Cycle 3 ana for Unit 2 six months after initial criticality.,

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Attaqhment to TXX-92169 Page 3 of 7

::s s': EuEs'5 :::~t %ec) 4 ACT:CN 3 ait' t~e nLT:er of cr3nnel s C DERAB LE o*e les s t'en t*.e Y -'*.-

Cnannels 0:ERABLE recuirement and itn the TwE: MAL ;CaER 1e.e' a.

Sele. the ;-6-(Inter Eciate Range Neutr0n 81ui :-terio ()

Setooint, restere the inoceracle channel to CPERaBLE status Or1;r t: intress'ag THERMAL DO'nER accve t e ;-5 let;oint, t.

A00ve the ?-6 (Inter?ef ate Range Neutron Clus ;*ter!O;* )

Set:01nt tot cele 10'. of RATED inERMAL POWER, restore t*e inocerstle channel to OPERABLE status crior to increasirg

]

THERMAL PC=ER above 10% of RATED THERMAL POWER.

1 C' CN 4 - with tne numrer O' 0?ERABLE :nannels one less tnan ne Mini *um Channels OPERABLE recuirement, suspend all coerations

'".ol<4ag

Ositive reacti.ity cnanges.

wverernm V"'mm

[: ~~WMmn,-fr

,C':CN Ej

'ith tne r ecer of CPE:AELE cnannels one less inan the v i ra a 5

Cnannels CPERAELE re:uirement, restore tne inoperacle :nanrel 5

6 to C;E;ABLE status itnin S nours ct.ithin t*e nest nea r c:en wA

ne reactor trip creatertf' suspene ali cherations in. chir; i

/.

2:sitise reacti'.it.

nanges.pna verifv eitner valve.M-5d 5 h

cr sabes 10 5-556 0, FCV-l'.1B, 1C5-543'9, IC 5-3441, an 1:5-5453 5

!)J are cicsec an: securea in position, anc verifv in's oesiti:n at W1*

no cnanreis 0;E aE'.E 14 davs ttere3fterj ioast - re rer

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cottlete &t*e 30cse actions within 4 *ours.janc ver1+y tre

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..N n - altn the nutter of U-ts eL: channels o + less inan t~e

3

%?ter f nannels, 37ARTUP an0/or PC'n'E; OPERAIICN,aj Or::eeC

r0sice: tne f0llowing Conditions are 50*isfied:

a.

ne inoperaDie cnannel is place:

'r t re t r';0e0 ::"C' t : 0

.itnin 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months , and Tne Minim e Cnannels ODERABLE recu!"eTe"t 's *et. ";*e e"-

tne incoeracle enannel may be cypassec fc u: : a ncurs f0r surveillance testing of other :nannels ;er Specification 4.3.1.1.

ACT:CN 7 - With less inan the Minimum Number of Channels CPERABLE.

'tr 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months cetermine by 00$ervation of the associated erm is' e annunciator in:c (s) that tne interloc( is in its #ea 're: state f or the existing :lant concition. cr accly 50ec1'i:at' - :..:

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Boron Oilution Flux Doubling requirements become effective for Unit 1 six months

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after criticality for Cycle 3 and for Unit 2 six months after initial criticality. !

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]ttac,hment-to TXX-92169-lPage 4 of 7 1N_SLRT A ACTION 5.'2* - With the number of OPERABLE channels one less than the Minimum Channels OPERABLE requirement, restore the inoperable channel to OPERABLE status within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months or withh the next hour-verify either valve 105-8455 or valves ICS-8560, FCV-111B, 10S-8439, 1C5-8441, and 1C5-8453 are closed and secured in position, and verify this position at least once per 14 days thereafter. With no channels OPERABLE, complete the above actions within 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months and verify the positions of the above valves at least cace per 14 days thereaf ter, i

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Jttachment to TXX-92169 Page 6 of 7 I:.BLE 4. 3-1 ( Continueal TABLE NOTATIONS Only i' ine reactor trio creakers 5accen to be in the closed cosition anc tre 3

Controi : 0 Orive 5;, stem is capable of roc witncrawal.

~3elow-Di (:-ter ec'3ie Range Neutron Flux Interlock) Settoint.

'Selo== P-13 (Lc. 5et;oint Dower Range Neutr0n Flux Interlock) $etpoint.

Acove the P-7 ( At Po er) Set 00 int.

'Above the P 9 (Reacter trip on Turbine trip Interlock) Setpoint.

(1)

If not per'ormed in previous 31 days.

(2) Com:arison of calorimetr,c to excore co er and N-16 power indication atose 15% ;f RATED S EDMAL DOWER.

Adjust excore channel and/or N-16 CNannel gains consistent with calorimetric co.er if absolute difference of the res ectise channel is greater inan 2L The provisions of Specification 4.0.4 are not 4

applicaDie for entry into MODE 1 or 2.

(3) Single coint cor arison of inc0re to encore AXIAL FLUX OIFFERENCE 3 Cove

.5', of RATED THERMAL DOWER.

Recalibrate if ';he aDsolute difference is greater t~an or equal to 3L For the purpose of inese surveillance recuirements, "M" is defined as at least once cer 31 E~ 0.

Tne Orovisions :f 5pecification 4.0.4 are not ap; icable for entry i t:

MODE 1 or 2.

(4) Neutron and N-15 etectors may Oe excluded f rom 1-ANNEL CALIERAT!CN.

(5) Detector plateau curves small ce Octained and evaluatec.

For the

nter eciate ;arce Neutren Flux, Power Range Neutron Flux and N-15 ch3rrets a :rovisicrs

' 3:ecification 2.0.4 are not applicable for entr',,nt:

CE 1 cc 2.

(5)- Inc:re Exc0-e Cali0rati:n. acove 75% of RATED TnERMAL POWER.

ar te pur::se.cf t ese surveillance requirements "Q" is defined as at ! east once per 92 E:DC.

Tne provisions of 5pecification 4.0.4 are not a;piic-able for entry into MODE 1 or 2.

(7) Eacn train shall be tested at least every 62 days on a STAGGERED TEST BASIS, (3) The MODES soeci"ed 'or these enannels in Table 4.3-2 are more restrictive anc t~erefore at:'icaele.

8 8

a (9) Quarterly surveillance in MODES 3, 4, and S shall also incluce verifica-tion tnat cermissises P-6 and P-10 are in tneir required state for exist-ing clant concitions by otservation of the permissive annunciator winco.

Ouarterly surveiliance snall include verification of tne 8cron Oilution ual to an increase cf twice the c:ent

esstnanorp%

Alarn Setcoint of ute Oe"o4 e

ithin a 10--tr mgw nyg,,y /vv,pc,p,

/v

Boron Dilution Flux Doubling requirements become ef fective for Unit 1 six monthsT after criticality for Cycle 3 and for Unit 2 six months after initial criticality.)

Wm~xmmn~/

v COMANCHE PEAK - UNIT 1 3/4 3-11

8ttachment to TXX-92169

'Page~7 of 7

. g,; ; 3.;

s

'AEl.E NO'A?IO N$ ( C:St'nue0)

( * :i ) 5etooint <erification 's not acclica0le.

(11) ?"e TRIP ACTUAIING CE < ' E COEU AI!CNAL IE 5I in3I' 'nceceacentl ser'#j tae y

C ;E R t.B I L I! f of :ne edervoltage arc Snunt trio atta: rents of :ne -eact:-

trip Oreakers.

(12) At ' east crce er 13 T0rtas 1,riag saut00an..eri'j t'at On 5 S i v'ite:

Soran Oil uti:n 01a4 C aci'.g test 59;nal tae rmal T4:$ c'5crarge salses cl:5 and tFe teatri'ugal caarging pu?:5 Sv tion valves from the Ra57 0:e (13) With the hign voltage setting,>aried as rec:mmencea Oy the manufacturer, an initial ciscriminat:r Dias curse in3'l Oe ?easured for each detector.

Su05ecuent Oiscriminat:r Dias curves snail be Obtained, evaluated and

.? pared to t*e initial curwes (lA) The TRIP ACTUATING CEVICE 00ERAI CNat TEST snali incepencently

.eri',

te OPERASILIIY cf t*e uncersoltage and 5^unt trio :ircuits for the Manual Reactor TriD Function.

?"e test 5*31' also verif., the OPERABIL Of e

Sy; ass Breaker trio fr: sit (51 sn nt t*i; : rice t: ;;! a c i:'; t r e a ke r i n service.

(15).::al manual u

(16) Awt0matic undervoltage tm ;.

t i

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,-,yp. P/x,.,

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Boron Dilution Flux Doubling requirements become effective for Unit 1 six months

\\ w criticality for Cycle 3 and for Unit 2 six months after initial criticality after n

p-~n--

- -y CCMANCHE PEAK - UNII 1 3, a 3 - 12 1

l l.

ML20091D666

Text

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