ML20115E804
| ML20115E804 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 07/10/1996 |
| From: | TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML20115E801 | List: |
| References | |
| TXX-96405, NUDOCS 9607160233 | |
| Download: ML20115E804 (5) | |
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AIBCHMENT 3 TO TXX 96405 AFFECTED TECHNICAL SPECIFICATION PAGES (NUREG 1468)
(PAGES 3/4 7-27, 3/4 7 27a, B 3/4 7 8 AND B 3/4 7 8a)
I 9607160233 960710 PDR ADOCK 05000445 P
. to TXX 96405 Pag'e 1 of 4 4
PLANT SYSTEMS 3/4.7.11 UPS HVAC SYSTEM OPERATING L1HITING CONDITION FOR OPERATION 3.7.11 Two indcpcadent UPS ll"AC treins The:Uninterruptible4 Power Supplies?(UPS)THVAC System;shallibe; OPERABLE suchsthatiesch UPS; & L Di st r,1 buti on f Room ii s ; supported by seither:
a:
An 10PERABLE;UPS 1 Room Jan ;Coi l iUni t;;;.ors b.:
An'0PERABLE' UPSVAir: Conditioning 1(A/C);; Train which.~1.s the;same train.;as,;the:UPSi;in;theiroom.
APPLICACILITY:
H0 DES 1, 2. 3 and 4.
ACTION:
(Units 1 :nd ' F With only enc UPS ll"AC tr;in OPERASLE. resterc the inoperabic syste;;; to OPERABLE st;tus within 7 d;ys or bc in et 1;;st ll0T STANOSY within the next S hours and in COLD SllUT00WN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
a; With'one^ or.:more UPS &LDistribution Room supported;only'by:an OPERABLE.UPS~A/ClsTrainp which1is not;the;;same: Train las thefUPS in thatiroom;Lrestore;the; required: support:for eachLUPS &
Distr,1bution Room.to an;0PERABLE' status 1within 30l days.or.be in?at least;HOTESTANDBYJwithinthe;nextf61 hours;andtin COLD SHUTDOWNLwithin::the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
b; With one or morelUPSc&:DistributioniRoom not5 supported by an OPERABLE'UPS Fan Coil Unit or;A/C Train, but with a;UPS A/C Train' circulating; air, restore;the: required support"to an j
OPERABLE status within.72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> ~while' complying.with Technical Specification 3/4.7.10: for!the.UPS Room or be~ in atLleast' HOT z
STANDBY?within the next 61 hours7.060185e-4 days <br />0.0169 hours <br />1.008598e-4 weeks <br />2.32105e-5 months <br />.and.in COLD; SHUTDOWN.within the;fo110 wing 130; hours.
c, Withjone:or more UPS 8 DistributionLRooms not supported by forced cooling or circulating' air, restore the required support within 11 hour1.273148e-4 days <br />0.00306 hours <br />1.818783e-5 weeks <br />4.1855e-6 months <br />, or be in?at least HOT STANDBY within the next 6_ hours' and in COLD SHUTDOWN,within. the. fo110 wing. 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />'.
COMANCHE PEAK UNITS 1 AND 2 3/4 7 27 Unit 1 Amendment No. 31 4
Unit 2 Amendment No. 17
Att.achment 3 to TXX 96405 Page 2 of 4 1
j SURVEILLANCE REQUIREMENTS 4.7.11.1 Each required UPS HVAG-A/C train shall be demonstrated OPERABLE i
at least once per 18 months
- by; verifying 11t7actuatesion:aniactualiot simulated actuation; signal;+
s.
c.
"crifying that cach UPS ""AC train starts automatically en a SAPETY Injection test sigaci.
b.
"crifying that cach UPS U"AC train starts automatically on a Blackout test signal.
4.7.11.2 Each ra151 red UPS HVAG-A/C train shall be demonstrated OPERABLE at least once per 31 days by starting the non-spcrating UPS lP!AC train and verifying that the train operates for at least I hour.
4.7.11'.3! Each required UPS' Room Fan: Coil Unit'shall be' demonstrated OPERABLEcat:1 east once.per.31(days by; veri.fying;that the UPSLRoom Fan; Coil Unit operates foriat least.one., hour a
The surveillance test interval is cxtcaded t; 24 ;;nths for Train A. Unit 2. to rc:ain in effect until the ce;pletion of the second refacling cutagc far Unit 2.
1 COMANCHE PEAK - UNITS 1 AND 2 3/4 7 27a Unit 1 - Amendment No. 31 Unit 2 - Amendment No. 17
a to TXX 96405 Page 3 of 4 TECHNICAL SPECIFICATIONS BASES 3/4.7.11 UPS HVAC SYSTEM The 0PCI,ASILITY cf the UPS HVAC System ensures that the uninterruptibic p;ar supply a distribution res;;;s UPS & Distribution Rooms ambient air temperatures do not exceed the allowable temperatures per Specification 3/4.7.10 for continuous duty rating for the equipment and instrumentation cooled by this equipment.
3 The UPS HVAC System. consists of a) a' dedicated?1003 capacity UPS 1
Room Fan Co11' Unit (FCU).in each safety related UPS.&'~ Distribution
]
Room and b) two, each -100*> capacity, electrically. independent and redundant UPS A/C Trains either of which can provide _ redundant and diverse backup cooling for al.1 ~ four. UPS'&. Distribution Rooms.7 1
Either a UPS & Distribution-Rooms'E UPS Room Fan Coil. Unit or an UPS A/C Train are capable of maintaining,the:UPS:& Distribution Room below 1ts design temperature limits.duringinorma1 and, accident 2
conditions.
l The:UPS HVAC system is a' normally operating 1systemt Each.FCU normally provides the req *uired temperature control to maintain its respective room below;104 F during;normaliplant: conditions.-- A single A/C train can also' provide,the required-temperature, control j
to maintain the' UPS & Distributionirooms;between;below1104'F during j
normal: plant conditions.a j
The.UPS Room FCUs;are' dedicated:to$the UPS Unit andJTrain they supportn.The~UPS:A/C; Train 1 components,arejarrangedfin. redundant safety related trains.tDuring; emergency' operation,nthe UPS.HVAC System maintains the temperaturetbelow]104T 0 Starting.with.. minimum OPERABLE: equipment 1 required:bysthe:LC0C aisingleLactive; failure of'a component ofEtheiUPS.HVAC; System'iwith:a.;1ossJof;offsite power, does not< impair;the~ ability _ofithe; system [totperfora its: design" function.
z The1 M fMVAC; system 11s OPERA 8LEtWhenseach M St&; Distribution Room is supM yted by eithetlan;0PERA8LE UPS., Room FCU organ OPERA 8LE UPS A/C Tra M Whichiisithessanelelectrica12.trainJasathe UPS11n that; room.
A FEisiconsidered!0PERA8LEiasilong"as;1%Lis;inithe70n"-/ position andn193hasicooling,waterZandLitsManiisloperatingMIfia1CU 1s "off; for; maintenance;or;=otherireasons21tilsinet! considered OPERA 8LE 'sinceitt;will?not starts lautomatiently;E A7CU41n;the.70N" positionrestarts.when,powet;isirogainediflgHowingJaloss;ofoffsite power.JALUPS;A/CArain; starts;onta;actuationisignal;and;therefore isTOPERA8 lei.1fiin; standby.s In ithe' eventr a tFCU ti s11 noperable'an$ tht3MptsttygWCJrai n Li s also; inoperable;;1003;%ooling can;be;pcovidsdity;$ht."
1.te train's!A/CJTrain E Ifione;or more UPS?tip$ptt1but30p u does not haves"same? Train ~dcooling,ta single failurMin;theIopposite Train COMANCHE PEAK - UNITS 1 AND 2 B 3/4 7 8 Unit 1 Amendment No. 14
. to TXX 96405 Pacje 4 of 4 could:: result llin alloss of:: coo 11ng1toltheJaffected! rooms 7and loss of theyfunction ofetheiequipaentLinlthe UPS:&; Distribution' Room ~of;the opposite 2 Train t (As'a: result,f the; temperatures?in theraffected, room woul d ii ncrea se ~ unti l j i t : exceeded i the ; maxi mum : demonst ratedj operati ng temperature 1for;the1 equipment 31n the:: room.j301 days isian: acceptable e
completion timetto; restore "samefTrain'icoolingLdue to;the flexibilitylin:the. design.withlroonLeoolers for3each room,and c
redundant: UPS1A/C.tTrains1which lareleach;capableioficooling tallithe UPS &iDistribution: Rooms.
t If onef.or).more UPS:&'Distributlon: Rooms 11oosesEall: cooling.ithe affected i rooms. will begi rU to 1 heat. up ; ; I f: ei therj or, both UPS - A/C Trains is' circulating :airJthrough':the supported areas,ethe; mixing will' resulttin:a much slower rate;ofitemperature increases;nThe completion timefof,72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> allows restoration':before the temperature' rises;to aJ1 eve 17that,thetequipmentnin the affected rooms 1 are,1,mpacted.? To : confi rm the1 equipment ? s. 0PERABILITY' 0 the temperature ;i n ithe a ffected : rooms : i s : veri fi ed ito be ;1 ess than l.or equal i to,104'E wi thi n ; one; houriand : eyery.12 l hours;t herea f ter c If?one:or more:UPS~4; Distribution: Rooms 31_ooses; forced ~coolingiand neither.UPS: A/C Train;is circulating: air:inithose' roomsLor 31f both rooms' loose forced cooling.nthe; temperature-rise.1szexpected to x
affect?equipmentioperabilityJin a;short' period off time (;0nethourlis allowed;to restore; circulating lairior!forcedicooling.f Each actuation (signalf should;be' tested!during the~ test ^ frequency. '
The1applicableTsignals for;the UPSfA/C1Trainsiareithe Safety In.jection;(SI)3andLStation Blackout l Signa 12(BOS);
COMANCHE PEAK - UNITS 1 AND 2 B 3/4 7-8a Unit 1 Amendment No.14
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