ML20198P414
| ML20198P414 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 10/31/1997 |
| From: | UNION ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20198P411 | List: |
| References | |
| NUDOCS 9711070149 | |
| Download: ML20198P414 (29) | |
Text
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b $i 21 ___ INSERT 3/4 3-18(a) , _i 1 MINIMUM !
. TOTAL NO. CilANNELS CHANNELS- APPLICABLE . !
FUNCTIONAL UNIT - OF CHANNELS . - TO TRIP OPERABLE MODEl' - ACTION
- r. Loss of Offsite Power. .
Start Turbine Driven Pump'. 1)4 kV Bus Undervoltage 4/ Bus ' 2/ bus 3/ Bus 1,2,3 l19* -;
- Loss of Voltage
- 2) Automatic Actuation 2 1 2- 1,2,3 39 -
Logic and Actuation
. Relays (LSELS and .
BOP ESFAS) 4
'i L
,,y . ; t--
, UWW, ;
T*B'!--3.3-3 IContinued)
. ACT!ON ST;TEVEtr'S (Continued)
' ACTION'36 -'With the nu?. der of 0?!RAELE channels less than the Total l Number of Cnannels, STARTUP anc/or POWER OPERATION may proceec previoed tnat ine Containment Pressure-Environmental
~
Allowance Modifier enannelsin the affected protection sets' are placed in the tripped condition witnin 6 nours, ->
~
ACTION 37 - With the number of OPERABLE channels-less than the Total- l Number of Channels, operation may continue provided.the. inoperable enannels are placed in tae tripped condition within 6 nours. jym ; } CT.TdN $YMC/ HEW 3 P .Tr Lp c A'TEb DN 'rA' &E .7.3-l. .Y =
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i 4 Q. }_ .: 4 1 4 4 f CALLAWAY - UNIT I 3/4 3-21(b) - Amendment No,6a 1 r i en.y -- - , . .
, , . , , ,e- , , ' , - , -. w - .- rer-,-h r-t
INSERT 3/4 3-21(b)- - EACTI'ON 39 - With the number of OPERABLE channels one less than the + Total Number of Channels, restore the inoperable channel to
- OPERABLE status within 48 hours'or declare the turbine-driven-auxiliary feedwater pump inoperable and take the' ACTION '
l
- required by Specification 3.7.1.2.
With the number of OPERABLE channels two less than the Total Ntunber of Channels, declare the turbine-driven auxiliary feedwater pump inoperable and take the ACTION required by Specification 3.7.1.2.
- 4 6
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w TAlilf 3.3-4 (Continued) . , . k ENC!NEEilED SAFETY FEATURES ACTUATION SYSTEM INSTRUtiENTATION ' TRIP S c TOTAL '5ENSOR TRIP ~ ALLOWABLE ~
. VALU(-
AM OVAllCE'(1Al_ -Z. ERROR (51 SETP0lNT < c- FUNCT10!!AL UltiT i*i : 6. Auxiliary Feedwater (Continued)
~
- c. -Safety Injection- .
- Start Motor-Driven Pumps Sec~ ltem 1. above for all Safety Injection Trip.Setpoints and Allowable Values.
- f. terr of Off;'te "~rer
{tc.rt T=bhc Or fee t
-EA- -N-A- --N-A
-M-A--
Tu...g -N-A-- Zh/JEXT Trip. of All 2 $ 7-Al lilaln g. Feedwater Pumps-
% Start Motor-Oriven N.A. fl . A. N.A.
^
Pumps fl. A. fl. A. Y
% h. Auxiliary ferdvater '
Pump Suction Pressure- 121.71 psia 220.64 psia II . A. fl. A. H.A. Low (Transfer to E5W)
- 7. Automatic Switchover to Containment Sump
- a. Automatic Actuation Logic and Actuation II. A. N.A. N.A.-
N.A. it. A. EF Relays (SSPS) 4 'E 1.21 2.0 236% 235.2% y b. RWST Level-tow-l.ow Coincident with 3.4
-a See Item 1. above f.ir Safety injection Trip Setpoints and Allowable Values, 8" Safety Injection .
e-E
- 8. Loss of Power ro o, .
4 kV Undervoltage [ a. N.A N.A. N.A. 33V (120V Bus). 8340,-8.3V-.(120V Bus).
-+- -Loss .of "oltage w/Is delay- 'w/l+0.2,-0.5s' delay R
S
.O,
_ _ _ _ _ _ _ _ , - ,m . _. ... .,
.o t
INSERT 3/4 3-26 TOTAL ' SENSOR - TRIP - ALLOWABLE ~j FUNCTIONAL UNIT ALLOWANQF."J Z- ERROR (S) ' SETPOINT VALUE
~
- f. Loss of Offsite Power -
- Start Turbine-Driven Pump 1)4 kV Bus Undervoltage See item 8.a below for Trip Setpoints and Allowable Values.
- Loss of Voltage -
- 2) Automatic Actuation N.A. N.A. N.A. N.A. N.A.
' Logic and Actuation - ;
Relays (LSELS and ' BOP ESFAS) ' t a i.
.~
r n
?" _ TABLE 4.3-2 (Continued) s-< ENGINEERED SAFETY FEATURES ACTUATION SYSTEM INSTRUMENT SURVElilANCE REQUIREMENTS '
E TRIP
" ANALOG ACTUATING CilANNEL DEVICE MODES CilANNEL CllANNEL MASTER SLAVE FOR WHICN FUNCTIONAL UNIT _ CllECK OPERATIONAL OPERATIONAL ACTUATION RELAY CALIBRATION TEST TEST RELAY SURVEILLANCE
- 6. 10G1C TEST _ TEST TEST Auxiliary Feedwater (Continued) 15 REQUIREDi
- f. -!er -cf-Off:1!e Peee- -N-A-- --R- -WA- -M- -M-A-
- g. ~TNJ'EA7* ZlF .7-&
Trip of All 'Hain -M-A- -EA- 1, 2, b N.A. N.A. H.A.
, Teedwater Pumps R N.A. M.A. N.A. _ l, 2
- h. Auxiliary Feedwater S R H
[ Pump Suction Pressure- N.A. N.A. N.A. N.A. 1, 2, 3 p low .
- 7. Automatic Switchover to Containment Sump
- a. Automatic Actuation N.A.
Logic and Actuation N.A. H.A. N.A. M(1) M(1) Q(3) 1, 2, 3, 4 Relays (SSPS)
- b. RWST Level - Low-low 5 R Coincident With Q N.A. N.A. N.A.
Safety injection N.A. 1, 2, 3, 4 ' See item 1 above for all Safety Injection Surveillance Requirements. E 8. Loss of Power a", 3
- a. 4 kV Undervoltage- N.A. R
= Loss of Voltage H.A. M N.A. N.A. N.A. 1, 2, 3, 5 4, 5++, 6++
- b. 4 kV Undervoltage- W(4) h Grid Degraded Voltage R N.A. M N.A. M.A. N.A. 1, 2, 3, I II ,
4, 5++, 6++ le
.c .y I
a. INSERT 3/4 3-36a !.~ TRIP
' ANALOG ACTUATING MODES CilANNEL DEVICE MASTER SLAVE FOR WHICH CilANNEL CHANNEL OPERATIONAL OPERATIONAL ACTUATION RELAY ' RELAY SURVEILLANCE -
FUNCTIONAL UNIT CHEGK CALIBRATION TEST TEST LOGIC TEST - TEST TEST 1 IS REOUIRED -
- f. Loss of Offsite Power-Start Turbine-Driven Pump
- 1) 4 kV Bus Undervoltage N.A. R N.A. M . NA. N.A. N.A. 1,2,3 -
- Loss of Voltage .
- 2) Automatic Actuation N.A. N.A. N.A. R N.A. N.A. NA. 1. 2, 3 _
- Logic and Actuation Relays (LSELS and BOP ESFAS) _
a t j ' i I e , . . , , s.... . ., . . _ . . . . . . ~ . . . . _ . _ . . _
ULNRC-3674 ATI'ACIIMENT FOUR CIIANGFS TO ULNRC-3578 ATTACIIMENT 19
ESFAS Irr'.rumentation 3.3.2 ACTIONS (continued)
-CONDITION REQUIRED ACTION COMPLETION TIME R. One train inoperable. R.1 NOTE -
One train may be bypassed , for up to 2 hours for surveillance testing provided the other train is OPERABLE. Be in H00E 3. 6 hours
&NQ R.2 Be in MODE 4. 12 hours S- l $ !! h et $r"in *f* N E b * "'
f, One -frain ineyerm)le . ofensw sh+ur. OR N b' "" J. 2 Enler afflic*Al* Condikon(d and Re,,,-e) Acksn (d of /. Co 3.1,.S~ for He fueline-o(erven auxt/ ray fe rd w +e - pe,y mde insye,- Ale. I .Z~ edidoly
-r. 7~w, +<,rns inoper.14. %/ E^f*r*//(s),c.1lend CoJrIron fog,,ina,/ AcHon(d o f L Co 3.7.S -{se
.fIa h ]i e-dnven a n ri, b. feed w h .-
a in,pa,,lle. pur,y
'CALLAWAY PLANT ITS 3.3 29 5/15/97
- e ESFAS Instrumentation 3.3.2 SURVEILLANCE REQUIREMENTS
........................................N0TE----
Refer to Table 3.3.21 to determine which SRs, other than Response Time Verification, apply for each ESFAS Function. Response Time Verification is addressed under SR 3.3.2.10. m SURVEILLANCE FREQUENCY SR 3.3.2.1 Perform CHANNEL CHECK. 12 hours SR 3.3.2.2 Perform ACTUATION LOGIC TEST. 31 da,s on a STAGGERED TESTS BASIS SR 3.3.2.3 - NOTE - - - - The continuity check may be excluded.
'* Perform ACTUATION LOGIC TEST. 31 days on a STAGGERED TEST BASIS SR 3.3.2.4 Perform KASTER RELAY TEST. 31 days on a STAGGERED TEST I
BASIS SR 3.3.2.S Perform COT. 92 days SR 3.3.2.6 Perform SLAVE RELAY TEST. 92 days SR 3.3.2.7 Perform TAD 0T. -31 dey // exanihkr (continued)
]
CALLAWAY PLANT ITS 3.3-30 5/15/97
ESFAS Instrumentation. 3.3.2 Table 3.3.2 1 (page 5 of 6) Engineered Safety Feature Actuation Systee Instroentation APPLICABLE KDES OR OTHER SPECITIED REQUIRED SURVEILLANCE ALLOWABLE FIE TION C0clTIONS CHANNELS COOITIONS REQUIREMEhTS vat UE*
- 6. Auxiliary fee &ater (continued)
(3) Vessel aT 1. 2 4 M SR 3.3.2.1 Equivalent and SR 3.3.2.5 Trip Time Delay SR 3.3.2.9 (a) Vessel 4T s Vessel aT Equivalent Equivalent s 104 RTP to 13.9% Vessel .T RTP"' (Power 1) (b) 10% RTP < s Vessel aT Vessel T Equiv: lent Equivalent to 23.9% s 202 RTP RTP"' Vessel 4T (Pwer 2) (4) Contairment 1. 2. 3 4 0 SR 3.3.2.1 s 2.0 psig Pressure - SR 3.3.2.5 Environmental SR 3.3.2.9 Allowance Hodifier
- e. Safety injection Refer to Function 1 (Safety injection) for all initiation functions and requirements,
- f. Loss of Offsite Power 1.2.3 2 trains -+- SR 3.3.2.7 NA Jj T' f" 2.3.:." -
- g. Trip of all Main 12* 2 per J SR 3.3.2.8 NA feedwater Pumps pump
' h. Auxiliary Fee &ater 1,2,3 3 P SR 3.3.2.1 a 20.64 psia Pump Suction Transfer SR 3.3.2.9 on Suction Pressure - SR 3.3.2.12 Low (continued)
(a) Tte A11mable Value defines the limiting safety system setting. See the Bar,e5 for the Trio Setpoints. (k) With a time delay s 240 seconds. (1) With a time delay s 130 secon::s. (n) Trip function may be blocked just before shutdown of the last operating main feedwater pump and restored just after the first main feedwater pump is put into service following performnce of its startup trip test. CALLAWAY PLANT ITS 3.3 37 5/15/97
UIRRC-3674 i ATTACIIMENT FIVE CIIANGES TO UIRRC-3578 ATTACIIMENT 20
ESFAS Instrumentation B 3.3.2
*/ BASES BACKGROUND Solid State Protection System (continued) are given in the Applicable Safety Analyses, LCO, and Applicability sections of this Bases. 9 Each SSPS train has a built in testing device that can ,
automatically test the decision logic matrix functions and the-actuation devices while the unit is at power. When any one train is taken out of service for testing, the other train is capable of providing unit monitoring and protection until the testing has been completed. The testing device is semiautomatic to minimize testing time. The actuation of ESF components is accomplished through master and slave releys. The SSPS energizes the master relays appropriate.for the condition of the unit. Each master relay then energizes one or more slave relays, which then cause actuation of the end devices. The master and slave relays are routinely tested to ensure operation. The test of the master relays energizes the relay, which then operates the contacts and applies a low voltage to the associated slave relays. The low
' voltage is not sufficient to actuate the slave relays but only demonstrates signal path continuity. The SLAVE RELAY TEST-actuates the devices if their operation will not interfere with continued unit operation. For the latter case, actual component operation is prevented by the SLAVE RELAY TEST circuit, and slave relay contact operation is verified by a continuity check of the
- circuit containing the slave relay.
Balance of Plant (BOP) ESFAS p (eg., L.SELSh The BOP E! FAS processes signals from SSPS, signal processing equipmentrand plant radiation monitors to actuate certain ESF-equipment. There are two redundant trains of BOP ESFAS, and a third separatio group to actuate the Turbine Driven Auxiliary Feedwater pump Th; r;&ndnt traim pic' tide ertu? tion for-
- ^=iliery Fcci:t:r Act= tier ' 0!Or dr"/er prpk ontainment Purge Isolation. Control Room Emergency Ventilatio and Emergency Exhaust Actuation functions. EN.rEA'T B 3'. 3'-M The B0P ESFAS has a built.in automatic test insertion feature (ATI) which continuously tests the system logic. Any fault i
(continued) BASES B 3.3 69 5/15/97 CALLAWAY PLANT ITS
- v .-e ,
- INSERT B 3.3-69 ai;d reposition automatic valves (turbine steam supply valves, turbine trip and
- throttle valve) as required. The redundant trains provide actuation for the j Motor Driven Auxiliary Feedwater pumps (and reposition automatic valves as i required, i.e., steam generator blowdown and sample line isolation valves,- ;
ESW supply valves, CST supply valves), 1 i e i I
- ,v,, u m s.-e1 y de e - , - - - > - -
1 ESFAS Instrumentation B 3.3.2 l BASES APPLICABLE taken out of the test mode (in which a channel trip was forced on . SAFETY ANALYSES. the protection system) and returned to operation. Due to the l failed nature of the channel, the channel cannot be considered to LCO, and APPLICABILITY be OPERABLE and is, therefore, considered to be in a state of (continued)- bypass when the channel failure is such that its bistable is not tripped. Two logic or manual initiation channels are required to ensure no single random failure disables the ESFAS. The required channels of ESFAS instrumentation provide unit protection in the event of any of the analyzed accidents. ESFAS protection functions are as follows:
- 1. Safety Iniection Safety Injection (SI) provides two primary functions:
- 1. Primary side water addition to ensure maintenance or recovery of reactor vessel water level (coverage of the active fuel for heat removal, clad integrity, and for limiting peak clad temperature to < 2200'F):
and
- 2. Boration to ensure recovery and maintenance of SDM (k.n < 1. 0) .
These functions are necessary to mitigate the effects of high energy line breaks (HELBs) both inside and outside of containment. The SI signal is also used to initiate other Functions such as:
- Phase A Isolation; e Reactor Trip:
. Turbine Trip:
- Feedwater Isolation:
- Start of motor driven auxiliary feedwater (AP4) pumps:
, frolaNon o.P JG blowdown ondt*yle linerj
! (continued) l CALLAWAY PLANT ITS. BASES B 3.3 71 5/15/97 i
- .' o ESFAS Instrumentation B 3.3.2 _
i BASES APPLIC/BLE 1, Safety Iniection (continued) SAFETY ANALYSES, LCO. snd
- Enabling automatic switchover of Emergency Core l APPLICABILITY Cooling Systems (ECCS) tuction to containment recirculation sumps, coincident with RWST low low 1 l level-e Emergency DG r. tart:
. Initiston of LSELS LOCA sequencer:
. Containment Cooling:
- Emergency Exhaust System in the LOCA (SIS) mode; and
. Start of ELW and CCW ptmps.
These other functions ensure:
- Isolation of nonessential systems through containment penetrations:
. Trip of the turbine and reactor to limit power generation:
. Isolation of main feedwater (MFW) to limit secondary side mass losses:
. Start of AFW to ensure secondary side cooling capability:
- Zrol % op s G Jl~ h wn n/.rnik hw h /,w e Enabling ECCS ruction from the refueling water *nc+he//s/
storage tank (RWST) switchover on low low 1 RWST level to ensure continued cooling via use of the jf[fg*>, cont 31nment recirculation sumps;
- Emergency leads for LOCA are properly sequenced and powered:
- Containment cooling to preserve containment integrity:
l l (continued) CALLAWAY PLANT ITS BASES B 3.3 72 5/15/97 l I
ESFAS Instrumentation ; B 3.3.2 BASES Auxiliary Feedwater Safety Iniection APPLICABLE e._ SAFETY ANALYSES, LCO and An SI signal starts the motor driven AN pumps. The APPLICABILITY AFW initiation functions are the same as the (continued) requirements for their SI function. Therefore, the requirements are not repeated in Table 3.3.21. Instead. Function 1. SI.-is referenced for all initiating functions and requirements,
- f. Auxiliary Feedwater Loss of Offsite Power The loss of offsite power (LOP) is detected by a voltage drop on each ESF bus. The LOP is sensed and processed by the circuitry for LOP DG Start (Load Shedder Emergency Load Sequencer) and fed to BOP ESFAS by relay actuation. Loss of power to either ESF bus will start the turbine driven AFW pum wat'poensurethatatleastoneSGcontainsenough
.c to serve as the heat sink for reactor decay heat pnd sensible heat removal following the reactor tripf; n addition, once the diesel generators are i start and up to speed, the motor driven AFW pumps will sequentially loaded onto the diesel gener tor c .egy 7,,g g gg;j,wg, Functions 6.atirougN.If udt5 DPERABLE in H0 DES 1. 2 and 3 to ensure that the SGs remain the heat sink for the reactor, except Function 6.d.(3) which must be OPERABLE in only MODES 1 and 2. Vessel AT is used to limit the allowed trip time delay only when greater than 10% RTP.
Below 10% RTP the maximum time delay is permitted: therefore, no OPERABILITY requirements should be imposed on the Vessel AT channels in H0DE 3. SG Water Level-Low Low in any operating SG will cause the motor driven AFW pumps to start. The system is aligned so that upon a start of the pump, water immediately begins to flow to the SGs, SG Water Level-Low Low in any two operating SGs will cause the turbine driven pump to start. These Functions do not have to be OPERABLE in MODES 5 and 6 because there is not enough heat being generated in the reactor to require the SGs as a heat sink. In HODE 4. AFW actuation does not need to be OPERABLE because either AFW or residual heat removal (RHR) will be available to remove (continued) CALLAWAY PLANT ITS BASES B 3.3-95 5/15/97
- 7 ,
ESFAS Instrumentation e B 3.3.2-BASES ACTIONS E.1. E.2.1. and E.2.2 (continued) be placed in the tripped condit1un. Instead it is bypassed. Restoring the channel to OPERABLE status, or placing the , inoperable channel in the bypass condition within 6 hours, is sufficient to assure that the Function remains OPERABLE and minimizes the time that the Fuaction may be in a partial trip condition (assuring the inoperable channel has failed high). The Completion Time is further justif4d based on the low p.3 ability of an event occurring during this interval. Failure to restore the inoperable r.hannel to OPERABLE status, or place it in the bypassed condition within 6 Sys, requires the unit b? placed in H0DE 3 within the following 6 hours and H0DE 4 within the next 6 hours, The allowed Completion Times are reasonable, based on operating experience, to reach the required unit conditions from full power conditions in an orderly manner and without challenging unit systems. In H0DE 4, these Functions an no longer required OPERABLE. The Required Actions are modified by a Note that allows one additional channel to be bypassed fcr up to 4 hours for j surveillance testing. Piacing a second channel in the bypass condition for up to 4 hours for testing purposes is acceptable based on the results of Reference 8. F.1. F.2.1. and F.2.2 Condition F applies to:
. Manual Initiation of Steam Line Isolation: an
- Less of Offsite Pe er and
. P 4 Interlock.
For the Harval Initiatie and the P 4 Intelock Functions, this action addresses the train orientation of the SSPS. -Fer the '.0;;-
- cf Offsite Pc cr function this action ;-ecogniccs th; lack of
=nual trip prc',b4cn for a failed channcl. If a train or channel is inoperable, 43 hours ' allowed to return it to OPERABLE status. The specified C pletion Time is reasonable considering the nature of these F nctions, the available a r-e
) (continued)
CALLAWAY PLANT ITS BASES B 3.3 107 5/15/97 4
,. o ESFAS Instrumentation B 3.3.2 BASES- ,
ACTIONS .0.1. 0.2.1 and 0.2.2 (continued)- Placing an EAM channni in trip auto:aatically enables the SG Water , Level Low Low (Adve.se Containment Environment) bistable for that - protection channel, with its higher SG 1evel 1. ip Setpoint. The Completion Time of 6 hours is based on Reference 11. If the inoperable channel cannot be placed in the trip condition within the specified Completion Time, the unit must be placed in a H0DE where this function is not required to be OPERABLF.. The unit must be placed in H0DE 3 within an additional six hours and in H0DE 4 within the following six hours. P.1 and P.2 Condition P applies to the Auxiliary Feedwater Purnp Suction Transfer on Low Suction Pressure Function. The Condensate Storage Tank is the highly reliable and preferred suction source for the AFW pumps. This function has a 2 out of 3 trip logic. Therefore, continued operation is allowed with one inoperable channel until the perfonnance of the next monthly COT on one of the otber channels, as long as the inoperable channel is placed
*1 in trip within 1 hour. Condition P is modified by a Note stating J that LC0 3.0.4 is not applicablir. H0DE changes are permitted with an inoperable channel.
El Condition 0 applies to the Auxiliary Feedwater Manual Initiation Function. With one or more channel (s) inoperable, enter the applicable Condition (s) and Required Actio (s) of LCO 3.7.5 for the associated auxiliary feedwater pump (s) rendered inoper able. R.1 and R.2 Condition R applies to the Auxiliary Feedwater Balance of Plant ESFAS automatic actuation logic and actuation relays. With one train inoperable, the unit must be brought to MODE 3 within 6 hours and H0DE 4 within the following 6 hours. The Required Actions are modified by a Note that allows one train to be 9 (continued)
)
CALLAWAY PLANT ITS BASES B 3.3 114 5/15/97
_-- .- ~ .-. . - . -- . =. . ESFAS Instrumentation B 3.3.2 BASES ACTIONS R.1 and R.2 (continued) bypassed for up to 2 hours for surveillance testing provided the other train is OPERABLE. ZWEXT $ 7. 7-// S' SURVEILLANCE The SRs for each ESFAS Function are identified by the SRs column REQUIREHERTS of Table 3.3.21 and by SR 3.3.2.10. . A Note has been added to clarify that Table 3.3.21 and SR 3.3.2.10 determine which SRs apply to which ESFAS Functions. Note that each channel of process protection supplies both trains of the ESFAS. When testing channel I, train A and train B must be examined. Similarly, train A and train B must be examined when testing chant el II, channel III. and channel IV. The CHANNEL CALIBRATION and COTS are performed in a manner that is consistent with the assumptions used in analytically calculating the required channel accuracies. x SR 3.3.2.1
)
Performance of the CHANNEL CHECK once every 12 hours ensures that a gross failure of instrumentation has not occurred. A CHANNEL CHECK is normally a comparison of the parameter indicated on one channel to a similar parameter on other channels. It is based on the assumption that instrument channels monitoring the same parameter should read approximately the same value. Significant deviations between the two instrument channels could be an indication of excessive instrument drift in one of the channels or of something even more serious. A CHANNEL CHECK will detect gross channel failure: thus, it is key to verifying the instrumentation continues to operate properly between each CHANNEL CALIBRATION. Agreement criteria are determined by the unit staff, based on a combination cf the channel instrument uncertainties, including indication and reliability. If a channel is outside the criteria, it may be an indication that the sensor or the signal processing equipment has drifted outside its limit.
< (continued)
CALLAWAY- PLANT ITS BASES B 3.3 115 5/15/97
I
' INSERT B 3.3-115 S.1 = and S.2 Condition S applies to the Auxilit y Feedwater Loss of Offsite Power Function.
- If one train is inoperable,48 hours are allowed to return it to OPERABLE status.
The specified Completion Time is reasonable considering the fact that this - Function is associated only with the Turbine Driven Auxiliary Feedwater pump,_ the available redundancy provided by the Motor Driven Auxiliary Feedwater pumps, and the low probability of an event occurring during this interval. If the Function cannot be returned to OPERABLE status, enter the applicable Condition (s) and Required Action (s) of LCO 3.7.5 for the Turbine Driven Auxiliary Feedwater pump made inoperable.
- ,Tl Condition T applies to the Auxiliary Feedwater Loss of Offsite Power Function.
If two trains are inoperable, immediately enter the applicable Condition (s) acd Required Action (s) of LCO 3.7.5 for the Turbine Driven Auxiliary Feedwater pump made inoperable. A
ESFAS Instrumentation B 3.3.2 BASES SURVEILLANCE SR 3.3.2.6 (continued) REQUIREMENTS 90 days (Reference 12). The 18 month Frequency for these slave relays is based on the need to perform this Surveillance under the conditions that apply during a unit outage and the potential for an unplanned transient if the Surveillance were performed with the reactor at power. The SLAVE RELAY TEST of relay K620 does not include the circuitry associated with the main feedwater pump trip solenoids since that circuitry serves no required safety function. The Frequency is adequate, based on industry operating experience. considering instrument reliability and operating history data. S.0 3.3.2.7 g SR 3.3.2.7 is the performance of a TADOT every-G1 de.73. V Thi s test is a check of the Loss of Offsite Power Function. The trip actuating devices tested within the scope of SR 3.3.2.7 are the
-ir=it; inted gder SR 3.3.5.2.-- LJ62.J oul j#wd
- nro-eLOFlnyt OG E ano lt "W EJFA.r .rej ar*} fem jmfr / n} $ / opie a,(,,,ep,j,)
'; The Frequenpy is adequate. It is based on industry operating"Turl,% 'uN4 -Me s
experienceg razide"ing 4"str'_mt reliabi'ity 2"d y" ting lister, dau. .IA//EAV- 8 2,7-// P A u ><k,3r/vR,)J,. SR 3.3.2.8 SR 3.3.2.8 is the performance of a TADOT. This test is a check of the Manual Actuation Functions and AFW pump start on trip of all HN pumps. It is performed every 18 months. The Frequency is adequate, based on industry operating experience and is consistent with the typical refueling cycle. The SR is nodified by a Note that excludes verification of setpoints during the TADOT for manual initiation Functions. The manual initiation Functions have no associated setpoints.- SR 3.3.2.9 SR 3.3.2.9 is the performance of a CHANNEL CALIBRATIGN. (continued) CALLAWAY PLANT ITS BASES B 3.3 118 5/15/97
n=* . INSERT B 33-118 - .
. and is consistent with the tyoical' refueling cycle. The trip actuating devices .
tested have no associated setpoint. - . ! t i 5
. .I a-tm .
?
s l 1 . . - . _ , - _ _ _, , _ . , . . . _ ,
,i
. e-LOP DG Start Instrumentation.
B 3.3.5 , BASES' [ LCO loss of offsite wegheDGpowersthemotordrivenauxiliary
.(continued) feedwater pumps NTc. . arc cf thcec p ;ps te stert w;uld la,e
~
ely =e terbh driver, m, as well as an increased potential for a loss of decay heat removal through the secondary system. APPLICABILITY The LOP DG Start Instrumentation Functions are required in H0 DES 1. 2, 3. .and 4 because ESF Functiens are designed to provide protection in these MODES. Actuation in MODE 5 or 6 is required whenever the required DG must be OPERABLE so that it can perform its function on an LOP or degraded power to the vital bus. ACTIONS In the event a enannel's Trip Setpoint is found nonconservative with respect to the Allowable Value, or the channel is found inoperable, then the function that channel provides must be declared inoperable and the LCO Condition entered for the particular protection function affected. Because the required channels are specified on a per bus basis.
- the Condition may be entered separately for each bus as
! appropriate.
A Note has been added in the ACTIONS to clarify the application of Completion Time rules. The Conditions of this Specification may be entered independently for each Function listed in the LCO. The Completion Time (s) of the inoperable channel (s) of a Function will be tracked separately for each Function starting from the time the Condition was entered for that Function. l lb.1 Condition A applies to the LOP DG start Functions with one loss of voltage and/or one degraded voltage channel on on^ or both buses inoperable. If one channel is inoperable, Required Action A.1 requires that channel to be placed in trip within 6 hours. With a channel in ' trip, the LOP DG stort instrumentation channels are configured to provide a one out-of three logic to initiate a trip of the incoming cffsite power.
+ (continued) 4 CALLAWAY PLANT ITS BASES B 3.3 154 5/15/97 l
. _ _ _ _ __ . _ . ~ _ _ _ _ _ _ . __ _ _ .~ . - _ ._
-INSERT B 3.3-154 which are automatically staned after expiration of the appropriate time delay by the LSELS. Failure of these pumps to start wotid leave only one turbine
- driven pump, started by the BOP-ESFAS directly upon receipt of a loss of ,
voltage signal from the LSELS output relays, 4 1 b c , , , - - , -,-------n. --+- - . --,e-
; .- ,o LOP DG Start Instrumentation B 3.3.5
,. BASES ACTIONS U (continued) -!
A Note is added to allow bypassing an inoperable channel for. up - to 4 hours for surveillance testing of other channels. _ This allowance is made where bypassing the channel does not cause an actuation and where at least two other channels are monitoring that parameter. The specified Completion Time and time allowed for bypassing one channel are reasonable considering the Function remains fully OPERABLE on every bus and the low probability of an event occurring during these intervals. . y Condition B applies when more than one loss of voltage and/or more than one degraded voltage channel on a single bus are _ inoperable. Condition B provides the allowance for one or :nore Functions with two or enre channels inoperable on a single ESF bus. Once in this Condition the affected instrument function (loss of voltage and/or degraded voltage) may no longer be single 3
.! failure proof or may no longer be functional for the affected bus. In this case, operation in the MODE of Applicability must be limited. Condition B allows 12 hours to restore the instrument function to the capability of continued operation in Condition A (i.e. 3 out of 4 channels per Function on each bus i OPERABLE). The 12 hour allowance is based on the allowance for an inoperable LSELS in MODES 14 (Specification 3.8.1 Condition F). This time is appropriate because the affected instrament channels (loss of voltage and/or degraded voltage) are inputs to the LSELS and rely on LSELS circuits to perform their required actuations. Since the actuation logic and actuation relays for the loss of power instruments @eth turbine driven AFW pum and diesel generator start) are an integral part of the LSE , an inoperable LSELS may also prevent the loss of power in ruments from performing their intended functions.
ZN/CKY 8 3'.3'-/SS Required Action B.1 requires restoring all but one channel on the affected bus to OPERABLE status. The 12 hour Completion Time should allow ample time to repair most failures and takes into account the_ low probability of an event requiring an LOP start occurring during this interval. i (continued) CALLAWAY PLAKT ITS BASES B 3.3 155 5/15/97 l
. o INSERT B 3.3-155 i
start via the BOP-ESFAS, motor driven AFW pumps start via the LSELS, ; r I r l l l l l l-l
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