ML17290A680

Proposed Tech Specs Reflecting Revised Design Calculations LOP Emergency Bus Undervoltage Loss of Voltage & Degraded Voltage Trips,Time Delay Setpoints & Allowable Values

ML17290A680
Person / Time
Site:	Columbia
Issue date:	10/06/1993
From:	WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:
Shared Package
ML17290A679	List: ML17290A678 ML17290A680
References
NUDOCS 9310150088
Download: ML17290A680 (6)

Text

TABLE 3. 3. 3-1 (Continued)

EHERGENCY CORE COOLING SYSTEH ACTUATION INSTRUMENTATION HINIHUH OPERABLE APPLICABLE 0 9<'lM CHANNELS PER OPERATIONAL TRIP FUNCTION TRIP SYSTEH a Ilw ',

CD CONDITIONS ACTION C. DIVISION 3 TRIP SYSTEH Well,'O

1. HPCS SYSTEH QO I om XN 'a r Reactor Vessel Mater Level - Low, Low, Level 2 2(b) 1 2 3 4'A 5* 30 OQ b. Drywell Pressure - High 2(b) 1, 2, 3 30 cnM Ow C. Reactor Vessel Mater Level-High, Level 8 2(c) 1 2 3 4* 5* 32 OO Condensate Storage Tanks Level-Low 2(d) 4* 5A

~OO 36

',CMO' e. Suppression Pool Mater Level-High 2(d) 4'A 5'A 36

f. HPCS System Flow Rate-Low (Hinimum Flow) 1 4A 5* 31

g. Hanual Initiation 1/di vi si on 1 2 3 4* 5* 34 FIBBRBFP APPLICABLE TOTAL RHANHEtS. OPERATIONAL OF CHAN ELS() CONDITIONS ACTNN Q D. LOSS OF POMER I

l. 4.16 kV Emergency Bus Under-voltage (Loss of Voltage) 2/bus b s 2 s 3 *. 5%*

4*% .*

2. 4.16 kV Emergency Bus Under-voltage (Degraded Voltage Division 1 and 2) 3/bus 2/ us 2/ s 1, 2, 3, 4*", 5*"

A 4 A ~ 5 t

3. 4.16 kV Emergency Bus Undervoltage r (Degraded Voltage Division 3) 2/bus 1, 2, 3, 4r*, 5""

TABLE NOTATIONS (a) A channel may be placed in an inoperable status for up to 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> during periods of required surveillance without placing the trip system in the tripped condition provided at least one  !

other OPERABLE channel in the same trip system is monitoring that parameter.

(b) Also activates the associated division diesel generator.

(c) Provides signal to close HPCS pump discharge valve only on 2-out-of-2 logic.

(d) Provides signal to HPCS pump suction valves only.

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~ ** When the system is required to be OPERABLE per Specification 3.5.2 or 3.5.3.

Required when ESF equipment is required to be OPERABLE. I c 8 Not required to be OPERABLE when reactor steam dome pressure is less than or equal to 128 psig.

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~VISEO BY NRC LETTER gogyROLgED COPy '%~TED ~UNE 2, 1992 3/4.3.3. EMERGENCY CORE COOLING SYSTEM ACTUATION INSTRUMENTATION LIMITING CONDITION 3.3.3 t

and with it t ithth FOR OPERATION 1 h i EMERGENCY CORE COOLING SYSTEM RESPONSE APPLICABILITY: As shown ACTION:

in Table 3.3.3-1.

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The emergency core cooling system (ECCS) actuation instrumentation channels shown in Table 3.3.3-1 shall be OPERABLE with their trip setpoints TIME as shown ltilo 1 iihi 2.2.2-2 in Table 3.3.3-3.

With an ECCS actuation instrumentation channel trip setpoint less conservative than the value shown in the Allowable Values column of b.

ihth~" 1.

Table 3.3.3-2, declare the channel inoperable until the channel is restored to OPERABLE status with its trip setpoint adjusted consistent Tii ti tt With one or more ECCS actuation instrumentation channels inoperable, withineog4Toaue~

hours take the ACTION required by Table 3.3.3-1. Ao~e~or Q~

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C. With either ADS trip system "A" or'B" inoperable, restore the inoperable trip system to OPERABLE status: 37.

1. Within 7 days, provided that the HPCS and RCIC systems are OPERABLE; otherwise,

't'2 2. Within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

Otherwise, be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and reduce reactor steam dome pressure to less than or equal to 128 psig within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

SURVEILLANCE RE UIREMENTS 4.3.3. 1 Each ECCS actuation instrumentation channel shall be demonstrated OPERABLE by the performance, of the CHANNEL CHECK, CHANNEL FUNCTIONAL TEST, and CHANNEL CALIBRATION operations for the OPERATIONAL CONDITIONS and at the frequencies shown in Table:-4.3.3.1-1.

4.3.3.2 LOGIC SYSTEM FUNCTIONAL TESTS and simulated automatic operation of all channels shall be performed at least once per 18 months.

4.3. 3. 3 The ECCS RESPONSE TIME of each ECCS trip function shown in Table 3.3. 3-3 shall be demonstrated to be within the limit at least once per 18 months.

Each test shall include at least one channel per trip system such that all channels are tested:at least once every N times 18 months where N is the total number of redundant channels in a specific ECCS trip system.

WASHINGTON NUCLEAR - UNIT 2 3/4 3-25 Amendment No. 1O4

CONTROLLED COPY TABLE 3.3. 3-: (Can inued)

~EMERGENCY CORE COOLrNG SYSi"H ACTUATION INSTRUMENTATION ACTTQN STA~c. ENTS ACT.ON 30 With the number of OPERABI ~ channels less than required by the Minimum OPERABLE Channels per Trip System requirement:

a. For one trip system, place the fncperable channel(s) and/or that trip system in the tripped condition ~fthin 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />" or declare the associated system inoperable.

b. Fcr both trip systems, declare the associated system inoperable.

ACTlOiV 31 " With the number of OPERABLE channels less than required by .he Nfnfmum OPERABLE Channels per Trip Sys am requirement, place the inoperable channel in the tripped condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />; restore the inoperable channel to OPERABLE status within 7 days or declare the asscciated system inoperable.

ACTION 32 With the number of OPERABLE channels less than required by he Minimum OPERABLE Channels per Trip System requirement, declar e the asscciated system inoperable.

ACTiQN 33- With the number of OPERABLE channels less than required by the Minimum OPERABLE Channels per Trip System requirement, place the inoperable channel in the ripped ccndi .fon withfn 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.

ACT~ON 34- With the number of QPERABl " channels less than required by the Minimum QP RABL Channels per Trip System requirement, restore the inoperable channel c OPERABLE status ~fthfn B hours or declare the associated ECCS inoperable.

ACTiON 35 With the number of OPERABLE channels less than required by the Minimum OPERABLE Channels per Trfp Sys em requirement, restare the inoperable channel to OPERABLE s atus within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> cr declare the associated AQS division inoperable.

ACTION 36 With the number of OPERABLE channels less than r'equired by the Minimum OPERABLE Channels per Trip System requirement, place the inoperable channel in the tripped condftion within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />" or declare the HPCS sys em inoperable.

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nels, olaca he inaoerable channel canditian within o -.en continue until

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~ihe provisions or Specifica icn .".0.4 are not, applicable.

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TABl.F. 3. 3. 3-2 (Continued)

EHERGEHCY CORE COOLIHO SYSTEM ACTUATIOH INSTRUMEHTATIOH SETPOINTS ALLOMABLE TRIP FUNCTIOH TRIP SETPOltlT VALUE C. DIVISION 3 TRIP SYSTEH

l. llPCS SYSTEH

a. Reactor Vessel Mater Level - Low Low, Level 2 > -50 inclies" > -52 inches

b. Drywell Pressure - High < F 65 psig < 1.85 psig

c. Reactor Vessel Mater Level - High, Level 8 < 54.5 inches" < 56.0 inches Q

d. Condensate Storage Tank Level - l.ow > 448 ft 3 in. > 448 ft 0 in elevatinn R elevation

e. Suppression Pool Mater Level - lligh < 466 ft 8 in. < 466 ft 10 in. elevation Xl elevation Q

f. }lPCS System Flow Rate Low (Hinimum flow) > 1250 gpm > 1200 gpm

g. Hanual Intiation H,A. H.A.

jl LLOtVARL< tTl D. LOSS OF POMER ghL~E, U

1. 4.16 kY Emergency Bns Bndervnltage '

4.16 kY Basis- 2870 k 172 volts A Loss aeacl of Voltage~ ('I>:~:~6<<~

S) i~ ~ P'. 120 V Basis- 82 t 5 volts Q

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.ts nr 9(eit4.8 s m $ 7m6 m y

2. 4. 16 kV Emergency Bus Undervoltage 6.+ 4.16 120 V kV Basis-Basis- S b~ ieS'.aS> 4 (617.3a v its I>i IJ s5iO64 5 i 4k~4 7.34 + 0.3 f 54:C.

j b id s S, 44ken TABLE NOTATIONS "See Bases Figure 8 3/4 3-1.

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