ML20100H790

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Proposed Tech Specs,Deleting SR 3.3.8.1.1 Which Requires Channel Check for Loss of Power Instrumentation & Changing TS Table 3.3.8.1-1 to Change Allowable Value for Degraded Voltage Function from 3762V & 3832V to 3876V
ML20100H790
Person / Time
Site: Clinton Constellation icon.png
Issue date: 02/22/1996
From:
ILLINOIS POWER CO.
To:
Shared Package
ML20100H787 List:
References
NUDOCS 9602280053
Download: ML20100H790 (20)
v • d • e


Text

Attcchm2nt 3.to U-602554 l LS-94-013 Page 2 of 10 LOP Instrumentation i 3.3.8.1 SURVEILLANCE REQUIREMENTS ,

---.................................-NOTES---..------------------------------.

1. Refer to Table 3.3.8.1-1 to determine which SRs apply for each LOP Function.
2. When a channel is placed in an inoperable status solely for performance of required Surveillances, entry into associated Conditions and Required Actions may be delayed for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> provided the associated Function maintains OG initiation capability.

SURVEILLANCE FREQUENCY h_

oe/etedj 3.3.8.1.1(;;2%i.it.n;;;EL-CiECK. " " l,;=

SR SR 3.3.8.1.2 Perform CHANNEL FUNCTIONAL TEST. 31 days -

l l

SR 3.3.8.1.3 Perform CHANNEL CALIBRATION. 18 months l l

l SR 3.3.8.1.4 Perform LOGIC SYSTEM FUNCTIONAL TEST. 18 months 1

9602280053 960222 PDR ADOCK 05000461 P pop .

CLINTON 3.3-79 Amendment No. 95 l

Attcchesnt 3 to U-602554 LS-94-013 Page 3 of 10 LOP Instrumentation 3.3.8.1

?~ %

Table 3.3.8.1 1 (page 1 of 1) k /

Loss of Power Instrumuntation REQUIRED i CHANNELS PER SURVEILLANCE Alt 0WA8LE FUNCTION DIVISION REQUIREMENTS VALUE  ;

1. Divis(ens 1 and 2- A.16 kV Emerges q sus undervoltage'
a. Loss of Voltage-4.16 kV 6 st 3.3.8.1.3 t 2345 V and 5 3395 V-basis st 3.3.8.1.4
b. Loss of Voltage-Time 6 SR 3.3.8.1.3 5 to seconds Delay. SR 3.3.8.1.4 g l ee-4 5.4-4 4 T .. - ;

2 ; Z .

c. Degraded Vottage -4.16 kV 2 bests SR 3.3.8.1.2 st 3.3.8.1.3 st 3.3.8.1.4
d. Degraded Voltage-Time 1 sR 3.3.8.1.2 t 14 seconds and s 16 seconds Delay SR 3.3.8.1.3 SR 3.3.8.1.4

. 2. Divislon 3 -4.16 kV Emergency Bus Undervoltage

a. Loss of Voltage -4.16 kV 4 SR 3.3.8.1.3 t 2345 V and s 2730 V basis SR 3.3.8.1.4
b. Loss of Voltage-Time 1 sa 3.3.8.1.3 s 3.0 seconds Delay st 3.3.8.1.4 ggg
c. Degraded Voltage-4.16 kV 8 6  ;' Z -- T: .

basis st 3.3.8.1.2 SR 3.3.8.1.3 st 3.3.8.1.4

d. Degraded Voltage-Time 1 SR 3.3.8.1.2 E 14 seconds and 5 16 seconds Delay SR 3.3.8.1.3 SR 3.3.8.1.4 (a ) TNs value is 6 he used aNer delene fi?r Opsed,'ons (Af0) d 4hc correspending ylad modificdo'o,, . (Ar,6f AfD of H,e correspoo, /dab, k af1.,odr%fio,, f/,e De rateg v,'yh, e k ss Allou V<lus .si,all be 137s2 Yand a 5s5 .

(b) Thr's vsIse is to be used afhe h'FC of H,e. correspond /9 f ad l moduYleeNon. Un6/ AfD of he corrnpoo,dly yhd MokTu' cath % Depressi Volhye - y,j6 KV basis Rysur're)

Ckam e.js ye, yjv,'sron shell by .5 l

CLINION 3.3-80 Amendment No. 95

j Attcchment 3 to U-602554 j LS-94-013 {

Page 4 of 10 AC Sources--Operating l 3.8.1  !

i (s-ACTIONS (continued)

CONDITION REQUIRED ACTION COMPLETION TIME G. Three or more required G.1 Enter LC0 3.0.3. Immediately J

AC sources inoperable.

l 1

1 SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.1.1 Verify correct breaker alignment and 7 days indicated power availability for each offsite circuit.

I SR 3.8.1.2 -------------------NOTES------------------- 1

1. Performance of SR 3.8.1.7 satisfies this SR.
2. All DG starts may be preceded by an i engine prelube period and followed by l a warmup period prior to loading. l
3. A modified DG start involving idling l and gradual acceleration to  :

synchronous speed may be used for this 2 SR as recommended by the manufacturer.

i When modified start procedures are not i used, the time, voltage, and frequency 1 tolerances of SR 3.8.1.7 must be met. 1 Verify each DG starts from standby As specified in y5370 conditions and achieves steady state Table 3.8.1-1 l J i l

voltage af6946 V and s 4580 V and frequency a: 58.8 Hz and s 61.2 Hz.

I

. (continued)

CLINTON 3.8-4 Amendment No. 95

Attcchment 3 to U-602554 LS-94-013 Page 5 of 10 -

AC Sources--Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued) k)

SURVEILLANCE FREQUENCY 1

SR 3.8.1.7 --------------- ---NOTE------------------  !

All DG starts may be preceded by an engine prelube period.

Verify each DG starts from standby 184 days 3670 condition and achieves, in s 12 seconds, i voltage artf46 Y and s 4580 V and frequency 2: 58.8 Hz and s 61.2 Hz.

SR 3.8.1.8 ------------------NOTE--------------------

This Surveillance shall not be performed in MODE 1 or 2. Howevcr, credit may be taken for unplanned events that satisfy this SR.

Verify automatic and manual transfer of 18 months unit power supply from the normal offsite -

circuit to the alternate offsite circuit. >

SR 3.8.1.9 -----.--- -------NOTES-------------------- t

~

1. This Surveillance shall not be performed in MODE 1 or 2. However, credit may be taken for unplanned l

events that satisfy this SR. >

h

! 2. If performed with DG synchronized with

! offsite power, it shall be performed '

i at a power factor s 0.9.

I Verify each DG rejects a load greater than 18 months l or equal to its associated single largest post accident load and following load rejection, the engine speed is maintained

'less than nominal plus 75% of the difference between nominal speed and the

overspeed trip setpoint or 15% above i nominal, whichever is lower.

(continued)

CLINTON 3.S-6 Amendment No. 95 4 e

Attechment 3 to U-602554 Ls-94-013

- Paga 6 of 10 AC Sources-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.11 -------------------NOTES-------------------

1. All DG starts may be preceded by an engine prelube period.
2. This Surveillance shall not be performed in MODE 1, 2, or 3.

However, credit may be taken for unplanned events that satisfy this SR.

Verify on an actual or simulated loss of 18 months offsite poder signal:

a. De-energization of emergency buses;
b. Load shedding from emergency buses for Divisions 1 and 2; and
c. DG auto-starts from standby condition and:
1. energizes permanently connected loads in s 12 seconds,
2. energizes auto-connected shutdown loads, 3g70 3. maintains steady state voltage af SM6 Y and d 4580 V, I i
4. maintains steady state frequency 2 58.8 Hz and s 61.2 Hz, and I
5. supplies permanently connected and l auto-connected shutdown loads for a 5 minutes.

(continued)

CLINTON 3.8-8 Amendment No. 95

l AttcchmInt 3 to U-602554 LS94-013 Page 7 of 10 AC Sources--Operating 3.8.1 i

SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY SR 3.8.1.12 -------------------NOTES-------------------

l. All DG starts may be preceded by an engine prelube period.
2. This Surveillance shall not be performed in MODE 1 or 2. However, credit may be taken for unplanned events that satisfy'this SR.

Verify on an actual or simulated Emergency 18 months Core Cooling System (ECCS) initiation signal each DG auto-starts from standby condition and:

a. In s 12 seconds after auto-start and '3870 1 during tests, achieves voltage 2:

Y and s 4580 V;

b. In s 12 seconds after auto-start and during tests, achieves frequency 2: 58.8 Hz and s 61.2 Hz; and
c. Operates for 2: 5 minutes.

SR 3.8.1.13 ------------------NOTE--------------------

This Surveillance shall not be performed in MODE 1, 2, or 3. However, ;redit may be taken for unplanned event; that satisfy this SR.

Verify each DG's automatic trips are 18 months bypassed on an actual or Jimulated ECCS initiation signal except:

a. Engine overspeed;
b. Generator differential current; and
c. Overcrank for DG 1A and DG 18.

(continued)

CLINTON 3.8-9 Amendment No. 95

Attachment 3 to U-602554 LS-94-013 Pege 8 of 10 AC Sources-Op,erating 3.8.1 o)

SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY i

SR 3.8.1.14 -------------------NOTES-------------------

1. Momentary transients outside the load and power factor ranges do not invalidate this test.
2. This Surveillance shall not be performed in MODE 1 or 2. However, credit may be taken for unplanned events that satisfy this SR.

Verify each DG operating at a power factor 18 months s 0.9 operates for 2 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s:

a. For 2 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> loaded 2 4256 kW for DG 1A, 2 4263 kW for DG 18, and 2 2420 kW for DG IC; and
b. For the remaining hours of the test loaded 2 3869 kW for DG 1A, 2 3875 kW for DG 18, and 2 2200 kW for DG IC.

1 SR 3.8.1.15 ------------------NOTES-------------------

1. This Surveillance shall be performed within 5 minutes of shutting down the DG after the DG has operated 2 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> loaded 2 3869 kW for DG 1A, d 3875 kW for DG fB, and 2 2200 kW for DG IC.

Momentary transients outside of the

, load range do not invalidate this i

test.

2. All DG starts may be preceded by an engine prelube period.

3870 K , verify each DG starts and achieves, in 18 months s 12 seconds, voltage rim & V and s 4580 V and frequency 2 58.8 Hz and s 61.2 Hz.

(continued)

CLINTON 3.8-10 Amendment No. 95

Attcchment 3 to U-602554 LS-94-013 Page 9 of 10 AC Sources.-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY j

SR 3.8.1.19 -------------------NOTES-------------------

1. All DG starts may be preceded by an engine prelube period, l 2. This Surveillance shall not be performed in MODE 1, 2, or 3.

However, credit may be taken for unplanned events that satisfy this SR.

Verify, on an actual or simulated loss of 18 months offsite power signal in conjunction with an actual or simulated ECCS initiation signal:

a. De-energization of emergency buses;
b. Load shedding from emergency buses for ,

Divisions 1 and 2; and

c. DG auto-starts from standby condition and:
1. energizes permanently connected loads in s; 12 seconds, i
2. energizes auto-connected emergency loads, l

jrg 70 3. a_chieves steady state voltage niBf96 V and s 4580 V,

4. achieves, steady state frequency l 2 58.8 Hz and s; 61.2 Hz, and l
5. supplies permanently connected and auto-connected emergency loads for 2: 5 minutes.

(continued)

CLINTON 3.8-13 Amendment No. 95 l

1

~ - - ---__

Attechr.:nt 3 to U-602554 LS-94-013 o

    1. ht NuSces-Operating 3.8.1 SURVEILLANCE REQUIREMENTS (continued)

SURVEILLANCE FREQUENCY f

SR 3.8.1.20 4

NOTE--------------------

I All DG start's may be preceded by an engine prelube period.

Verify, when started simultaneously from 10 years ,

j yg7o standby condition, each DG achieves, in s 12 seconds, voltage ai"N40 V and s 4580 V and frequency 2: 58.8 Hz and s 61.2 Hz. ,

i CLINTON 3.8-14 Amendment No. 95 t

l Attachment 4 1

to U-602554 LS-94-013 Page1 of11 Attached Marked-Up Pages of the Technical Specification Bases 1

i I

-- _ _ ._ . . _ . _ _ _ _ _ _ _ . . . . . . . . . . . _ ~ . . . -. . _ . _ . . _ _ _ _ .

Attechment 4 to U-602554 N2 11

'kOPInstrumentaticn 8 3.3.8.1 1

8 3;3 INSTRUMENTATION 1

Bf3.3.8.1 Loss of' Power (LOP) Instrumentation BASES-

~8ACKGROUNO- Successful operation of the required safety functions of the .

Emergency Core Cooling Systems (ECCS) is dependent upon the availability of adequate power sources for energizing the .

various components such as pump motors, motor operated  !

valves, and the associated control components. The LOP instrumentation monitors the 4.16 kV emergency buses. ,

Offsite power is the preferred source of power for the  ;

4.16 kV emergency buses. If the monitors determine that i

insufficient power is available, the beses are disconnected from the offsite power sources and connected to the onsite- i l

diesel generator (DG) power sources.

Each 4.16 kV emergency bus has its own independent ~ LOP

. instrumentation and associated trip logic. The voltage for l the Division 1, 2, and 3 buses is monitored at two levels,  :

which can be considered as two different undervoltage functions: loss of voltage and degraded voltage.

m .

l The LOP instrumentation causes various bus transfers and disconnects. Each Division 1 and 2 emergency bus Loss of-

)l l Voltage Function is monitored by two undervoltage relays on 1 the emergency bus and two undervoltage relays on each of the I two offsite power sources. The outputs of these relays are arranged in a two-out-of-two taken three times logic configuration. Each of these relays is an inverse time l

n '

delay relay./t ums n 1 and m sion meri cy o pepaa vol e Fune n is m tored by o un rvol 1 i

pfla for ach e ency b whose ou ts ar arra ed M-i '

guration he ou it af

[' a aic o-o of-two ogic co nute + = time d _ w calav af- 11 The Division 3  :

emergency bus Loss of Voltage Function is monitored by

' (continued)

. j L

L

CLINTON- B 3.3-222 Revision No. 1-1 1

l

Attechmtnt 4 to U-602554 M Odosisn I, Oko,ston 2, end bl Vision 3 tonsr e^C)' Ls-94-013 topTstrEm#Isntatien

, bus De rade.d%/foge, fqnct/en /s modered 3381 eatis ener CnCY b3 b'* *^ EstveNnge. rejla s for"'h*sc estruts are a tanya in a two.

ut of this hyc lyuts to a %e dek relay (AeA I).

) BASES A_m _ _

BACKGROUND four undervoltage relays whose outputs are arranged in a one-out-of-two taken twice logic configuratiop Sa autnut (continued) of this logic inputs to a time delay relay.K Divi nq itor yo pyrr ncy s Degr eo Volta e outp .tuncti is  ;

with t conta sa nged d rvo age re re ut-of- ree logi configu ion. he tput t o c inpu, to a ti delav r av/

APPLICABLE .

The LOP instrumentation is required for the Engineered SAFETY ANALYSES, Safety Features to function in any accident with a loss of LCO, and offsite power. The required channels of LOP instrumentation APPLICABILITY ensure that the ECCS and other assumed systems powered from the DGs provide plant protection in the event of any of the analyzed accidents in References 2, 3, and 4 in which a loss of offsite power is assumed. The initiation of the DGs on loss of offsite power, and subsequent initiation of the ECCS, ensure that the fuel peak cladding temperature remains below the limits of 10 CFR 50.46.

Accident analyses credit the loading of the DG based on the loss of offsite power during a loss of coolant accident (LOCA). The diesel starting and loading times have been included in the delay time associated with each safety system component requiring DG supplied power following a loss of offsite power.

The LOP instrumentation satisfies Criterion 3 of the NRC Policy Statement.

The OPERABILITY of the LOP instrumentation is dependent upon the OPERABILITY of the individual instrumentation channel Functions specified in Table 3.3.8.1-1. Each Function must have a required number of OPERABLE channels per 4.16 kV emergency bus, with their setpoints within the specified Allowable Values. A channel is inoperable if its actual trip setpoint is not within its required Allowable'Value.

The. actual setpoint is calibrated consistent with applicable setpoint methodology assumptions.

The Allowable Values are specified for each function in the Table. Nominal trip setpoints are specified in the setpoint calculations. The nominal setpoints are selected to ensure that the setpoint does not exceed the Allowable Value between CHANNEL CALIBRATIONS. Operation with a trip setpoint less conservative than the nominal trip setpoint, (continued)

.g i -

B 3.3-223 Revision No. 1-1 CLINTON

Atteclunent 4 to U-602554 b IIsfbentNin B 3.3.8.1 1

BASES 1.a. 1.b. 2.a. 2.b. 4.16 kV Emeroency Bus Undervoltaae l APPLICABLE .

SAFETY ANALYSES, (Loss of Voltaae) (continued) I LCO, and APPLICABILITY required equipment. The time delay specified for the Divisions 1 and 2 4.16 kV Emergency Us Loss of Voltage Functions corresponds to a voltage at the 120-volt Basis trip setpoint of a 67 volts and s 97 volts. Lower voltage conditions will result in decreased trip times. The Division 3 4.16 kV Emergency Bus Loss of Voltage Function 120-volt Basis trip setpoint is a 67 volts and s 78 volts.

Six channels of 4.16 kV Emergency Bus Undervoltage (Loss of Voltage) Function per associated emergency bus for Divisions 1 and 2 and four channels for Division 3 are only required to be OPERABLE when the associated DG is required to be OPERABLE to ensure that no single instrument failure can preclude the DG function. (Six channels input to each of the Division 1 and Division 2 DGs and four channels input to the Division 3 DG. Each of the six channels for Division 1 and six channels for Division 2 is an inverse time delay relay. Each of these time delays are considered to be separate channels. For Division 3, the Loss of Voltage Function logic inputs to a single time delay relay. Thus, only one time delay channel is associated with Division 3.)

Refer to LC0 3.8.1, "AC Sources-0perating," and LCO 3.8.2, "AC Sources-Shutdown," for Applicability Bases for the DGs.

l.c. 1.d. 2.c. 2.d. 4.16 kV Emeroency Bus Undervoltaae (Dearaded Voltage)

A reduced voltage condition on a 4.16 kV emergency bus indicates that while offsite power may not be completely lost to the respective emergency bus, power may be insufficient for starting large motors without risking damage to the motors that could disable the ECCS function.

Therefore, power supply to the bus is transferred from offsite power to onsite DG power when the voltage on the bus drops below the Degraded Voltage Function Allowable Values (degraded voltage with a time delay). This ensures that adequate power will be available to the required equipment.

The Bus Undervoltage Allowable Values are low enough to prevent inadvertent power supply transfer, but high enough '

IMSMT~ to ensure that sufficient power is available to the required equipment.* L e Alla.'im "im 6m . ;^^ . l; L :: r#

, g-1 m e 7 9 - t _; 10 0 ' " ~ ~ The Time Delay Allowable (continued)

CLINTON 8 3.3-225 Revision No. 1-1

Attachment 4 to U-602554' LS-94-013 Page 5 of 11, INSERT for TS Bases at page B 3.3-225 As stated above, the purpose of this instrumentation is to ensure that sufficient power will be available to support the ECCS function during a LOCA. During a LOCA, the ECCS and other safety systems will be initiated at the start of the event. This large loading of the safety buses results in a voltage transient of sufficient magnitude to start the degraded voltage timers. If the degraded voltage relays do not reset, which requires the voltage to be restored to a level above the relay reset setpoint, the bus undervoltage time delay relays will trip, resulting in bus transfer to the DGs. Thus, the relay reset (pick-up) setpoint must be high enough to ensure adequate voltage for the safety-related loads. The Degraded Voltage Allowable Value Specified is the relay reset setpoint. The Allowable Value has a 120-volt basis of a111.08 volts. (Ref. 5) 1 J

s

Attcchment 4 to U-602554 p*S-94g0]

    • LOP In N rumentaticn B 3.3.8.1

- l BASES 1.c. 1.d. 2.c. 2.d. 4.16 kV Emergency Bus Undervoltage APPLICABLE SAFETY ANALYSES, (Dearaded Voltage) (continued)

LCO, and APPLICABILITY Values are long enough to provide time for the offsite power supply to recover to normal voltages, but short enough to ensure that sufficient power is available to the required equipment. ~

4 7Two c annels of 4.16 kV Emergency Bus Undervoltage (Degraded

' Voltage) Function per associated emergency bus for Divisions 1 and 2 and ' '-- - " ^h " n'"' '-- 3 are only required 3

to be OPERABLE when the associated DG is required to be OPERABLE to ensure that no single instrument failure can preclude the DG function. (Two channels input to each of.

the Division 1,:nd n'v h hn 2 96 ,and three d = x h 'ng"t 3

'- "'"' '-- 3 DGS. The Degraded Voltage Function logic for each Division inputs to a single time delay relay.

Thus, only one time delay channel is associated with each ggg7' Division.) Refer to LC0 3.8.1 and LC0 3.8.2 for

% glicability Bases for the DGs.

ACTIONS A Note has been provided to modify the ACTIONS related to LOP instrumentation channels. Section 1.3, Completion Times, specifies that once a Condition has been entered, subsequent divisions, subsystems, components, or variables expressed in the Condition discovered to be inoperable or not within limits will not result in separate entry into the Condition. Section 1.3 also specifies that Required Actions

' of the Condition continue to apply for each additional failure, with Completion Times based on initial entry into the Condition. However, the Required Actions for inoperable LOP instrumentation channels provide appropriate compensatory measures for separate inoperable channels. As such, a Note has been provided that allows separate

. Condition entry for each inoperable LOP instrumentation channel .

A.1 With one or more channels of a Function inoperable, the Function may not be capable of performing the intended function. Therefore, only 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> is allowed to restore the (continued)

CLINTON B 3.3-226 Revision No. 1-1 ,

Attcchment 4 to U-602554 LS-94-013 Page 7 of 11 INSERT for TS Bases at page B 3.3-226 Footnote (a) and (b) to Table 3.3.8.1-1 explain that the TS changes are effective upon i

> Release for Operation of the corresponding plant modification. The planned

m<xiifications are
AP 027 for Division I, AP-028 for Division II, and AP-029 for Division III. j 1

l v

4 i

4 a

1

Attechn:nt 4 a U-602554 LS-94-013

.Page 8 of 11 LOP instrumentation 1 B 3.3.8.1 1

l BASES )

I R SR 3.3.8.1.1 75/5 SA has hee,n delched (continued) 6"e,-fe..uoi ce-ef--the-GIANNEL-CHE4K -er e every u accurrad neur; ;5fere-d at-a-gross-feWrc of ir,5trumenteWa-hat not NEL CHEC4Fi2 . u.. ally a compa,-;3en of the p;;;;cterg

the. (

p_dicated

_hennels. Iterh ene :t::::1th:te:ssumpth:

ba: d-er a :frihr p...;cter :th t ' ;t; 3t I phenneis mon 6Hng-the-same parameter :heeld =d I approx 4 mat +1y-th; :ame-walues-Significant-devhticaD ,

getween-the--i n strument-ch annel s-co uld-be- a n-i ndi c a t# l excessive instrument-drift in one-of-the-channe1+-oN 9emething-even-more-serious,--A-GIANNEt-CHECK-will detect gr-oss channel -fativret-thusrii hdey-to--verifying-the s f Jas'trumentat40n-sontinues-to-operate-pr4perly-between-eadh OHANNEt-CAL-IBRAT3

[ement-ceiterie-are-determined-by-the plant-staff-b d

/

a combinetien ef the-channel--4astrument-uncer-ta4at4

{hc4uding 4ndiceWa-and r-sadabiMtyMf-a-ehannel--it ptrtside-the criterhrit may4: 2n indie41 ion-that thd instrament has dr4 f-ted-outside-its-limit Jheirequency-is-based on operat-ing-expc.% ;ers]ha l

j demonstrates-channel-failure-is-rare.---The CHANNEL-CliECJC t .

'} I pupplement+--less-formal,-but-more-frequenty--cheeks-oV /

bhannels-during-normal-operational-use-of-the-disp-ly /

assee4eted-with-the required

_ channels-of--the-4:CG.

f SR 3.3.8.1.2 A CHANNEL FUNCTIONAL TEST is performed on each required channel to ensure that the entire channel will perform the intended function. For Series Functions, a separate CHANNEL FUNCTIONAL TEST is not required for each Function, provided each Function is tested. l I

Any setpoint adjustment shall be consistent with the I

assumptions of the current plant specific setpoint methodology.

The Frequency of 31 days is based on plant operating experience with regard to channel OPERABILITY that demonstrates that failure in any 31 day interval is rare.

(continued)

CLINT0'N B 3.3-228 Revision No. 1-1 i

Attachment 4 to U-602554 LS-94-013, Paga'9~cf 11' LOP Instrumentation I 8 3.3.8.1 8ASES SURVEILLANCE SR 3.3.8.1.3 REQUIREMENTS A CHANNEL CALIBRATION is a complete check of the instrument (continued) loop and the sensor . This test verifies the channel responds to the mecured parameter within the necessary

-' rr " and accuracy. CHANNEL CALIBRATION leaves the channel adjuitad to account for instrument drifts between successive calib.'ations consistent with.the plant specific setpoint methodology.

" The Frequency is based on the assumption of the magnitude of equipment drift in the setpoint analysis.

SR 3.3.6.1.4 The LOGIC SYSTEM FUNCTIONAL TEST demonstrates the OPERABILITY of the required actuation logic for a specific channel. The system functional testing performed in LC0 3.8.1 and LCO 3.8.2 overlaps this Surveillance to provide complete testing of the assumed safety functions.

The 18 month Frequency is based on the need to perform this

' Surveillance under the conditions that apply during a plant outage and the potential for an unplanned transient if the Surveillance were performed with the reactor at power.

Operating experience has shown these componerts usually pass the Surveillance when performed at the 18 month Frequency.

REFERENCES 1. USAR, Section 8.3.1.1.2.

I 2. USAR, Section 5.2.2.

USAR r n- -

h 8 3.3-229 Revision No. 1-1 CLINTON

Attechment 4 to U-602554 LS-94-013 Page 10 of 11 AC Sources-Operating B 3.8.1 1

( l 8ASES (continued)

SURVEILLANCE The AC sou'ces r are designed to permit inspection and REQUIREMENTS testing of all important areas and features, especially those that have a standby function, in accordance with -

10 CFR 50, GDC 18.(Ref. 8). Periodic component tests are supplemented'by extensive functional tests during refueling outages under simulated accident conditions. The SRs for demonstrating the OPERABIt.ITY of the OGs are in accordance with the recommendations of Regulatory Guide 1.9 (Ref. 3),

Regulatory Guide 1.108 (Ref. 9), and Regulatory Guide 1.137 (Ref.10).

Where the SRs discussed herein specify voltage and frequency-tolerances..the minimum and maximum steady state output 87 oltages of"&Nt! V and 4580 V respectively, are equal to j

% 10% of the nominal 4160 V output voltage. The specified '

minimum and maximum frequencies of the DG is 58.8 Hz and 7k*% + 61.2 Hz, respectively, are equal to i 2% of the 60 Hz

~~

nominal frequency. The specified steady state voltage and J frequency ranges are derived from t c dations iven in Regulatory _ Guide 1.9 (Ref. 3). Howwsc, fAe m/I, bum vetA9t Mas Mc.rease,4 fe e,nsure edagwaft vo/fesjt to

\ *)*s% * *l8 }sfety'reletsa lesAs du-l9 a DB A (Re9 /*f).

V 3.8.1.1 N _

This SR ensures proper circuit continuity for the offsite AC electrical power supply to the onsite distribution network and availability of offsite AC electrical power. The. breaker alignment verifies that each breaker is in its correct

' position to ensure that distribution buses and loads are connected to their preferred power source and that appropriate independence of offsite circuits is maintained.

l The 7 day Frequency is adequate since breaker position is not likely to change without the operator being aware of it ,

and because its. status is displayed in the control room.

l SR 3.8.1.2 and SR 3.8.1.7 These SRs help to ensure the avtilability of the standby

electrical power supply to mitigate DBAs and transients and maintain the unit in 'a safe shutdown condition.

(continued) i e l

! CLINTON 8 3.8-13 Revision No. 0

Attachmant 4 to U-602554 LS-94-013 Page 11 of 11 AC Sources-Operating 8 3.8.1 BASES 3 SURVEILLANCE Diesel Generator Test Schedule (conti.nued)

REQUIREMENTS A test interval in excess of 7 days (or 31 days, as appropriate) constitutes a failure to meet SRs and results in the associated OG being declared inoperable. It does

- not, however,-constitute a valid test or failure of the OG, and any consecutive test count is not reset.

REFERENCES .. 1. 10 CFR 50, Appendix A, GOC 17.

2. USAR, Chapter 8.
3. Regylatory Guide 1.9.
4. USAR, Chapter 6.
5. USAR, Chapter 15.
6. Regulatory Guide 1.93.
7. Generic Letter 84-15, July 2, 1984.
8. 10 CFR 50, Appendix A, GDC 18.
9. Regulatory Guide 1.108.
10. Regulatory Guide 1.137.
11. ANSI C84.1, 1982.
12. NUMARC 87-00, Revision 1, August 1991,
13. IEEE Standard 308. , G( on /7-AN-II l

l l

l CLINTON B 3.8-32 Revision No. O

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