ML20091D666

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Proposed TS Rev to Table 3.3-1, Reactor Trip Sys Instrumentation Re Boron Dilution Mitigation Sys
ML20091D666
Person / Time
Site: Comanche Peak Luminant icon.png
Issue date: 04/06/1992
From:
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20091D659 List:
References
NUDOCS 9204100339
Download: ML20091D666 (7)
v • d • e


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Att'achment to TXX-92169

~Page 2 of-7 9

' BLE ?. 3-1 (Centi vec)

'ABLE NOTAT:245 a

Only 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.

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

Atove 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.

f A0cve the P-3 (3-leep flow permissive) Setpoint.

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

h The caren cilution flux coucling signals may te blocked curing reactc startut 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 r tne nemt 6 nours.

ACT!:N 2 '.i tn t"e cutter of 0;ERABLE cnannels 0 - less tnan tr4 Tctal 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 i ccec conciti:n 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 L

c at; ANT 00wE; TILT RATIO is monitorec at least orce
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'.2 s ues :er 5:ec fication A.2.A.2 m -

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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 l 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 *u m Channels OPERABLE recuirement, suspend all coerations '".ol<4ag

Ositive reacti.ity cnanges.

[:,C':CN~~WMmn,-fr wverernm V"'mm 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 are cicsec an: securea in position, anc verifv in's oesiti:n at 1:5-5453 5 ioast - re rer 14 davs ttere3fterj W1* no cnanreis 0;E aE'.E

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

J 1resitises -' te anece al tes at least -en ner la ca s taeeaa'tsr )

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..N n - altn the nutter of U-ts eL: channels o + less inan t~e :;3

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%?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 <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, 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 <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> 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 (

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 <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> 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 <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> 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 3

Only i' ine reactor trio creakers 5accen to be in the closed cosition anc tre 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 4

channel is greater inan 2L The provisions of Specification 4.0.4 are not applicaDie for entry into MODE 1 or 2.

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

.5', of RATED THERMAL DOWER. Recalibrate if ';he aDsolute 3 Cove 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.

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

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 Alarn Setcoint of ual to an increase cf twice the c:ent ithin a 10--tr :esstnanorp%

ute Oe"o4 mgw nyg,,y /vv,pc,p ,

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  • 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.)

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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 y ser'#j tae 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 (15) .::al manual snu nt t*i; : rice t: ;;! a c i:'; t r e a ke r i n service.

(16) Awt0matic undervoltage tm ;.

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

\ w after criticality n for Cycle p-~n-- 3 and for Unit 2 six months after initial - -y criticality CCMANCHE PEAK - UNII 1 3, a 3 - 12 1

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