ML19253B588

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Proposed Change to Tech Spec Tables 3.3-3 Through 3.3-5, Paragraph 4.8.1.1.2 Re Degraded Electrical Power Grid Conditions.Safety Evaluation Encl
ML19253B588
Person / Time
Site: Farley Southern Nuclear icon.png
Issue date: 10/10/1979
From:
ALABAMA POWER CO.
To:
Shared Package
ML19253B584 List:
References
NUDOCS 7910160446
Download: ML19253B588 (11)
v • d • e


Text

.

6 E TABLE 3.J-3 (Continued)

(j [HG!re:CRED SAFETY FEATilRE ACTUATION SYSTEH INSTRUHENTATION 5 HINIHUN El TOTAL NO. CllANNELS CilANNELS APPLICABLE '

FUNCTIONAL UNIT _ 0F CilANNEl.S TO TRIP OPERADLE H0 DES ACTION

b. Undervoltage-RCP Start Turbine-Driven Pump 3-2/ bus 2 2 1 14
c. S.I. '

Start Motor Driven Pumps

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See 1 above (all S.,I. initiating functions and requirements)

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e, 7. LOSS OF POWER n2 '

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a. 4.16 KV Emergency Dus 3/ bus 2/ bus 2/ bus 1, ?, 3 19*,7###

Undervoltage(Loss of Voltage)

b. 4.16 KV Ener0ency Bus 3/ bus 2/ bus 2/ bus 1. 2, 3 19*,illi Undervoltage (De-graded Voltage)

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TABLE 3.3-3 (Continued) g TABLE NOTATION D i

Trip function may be bypassed in this MODE below P-11. .

El Trip function may be bypassed in this MODE below P-12.

The channel (s) associated with the protective functions derived frcm the out of service Reactor Coolant. Loop shall be placed in the tripped mode. -

        1. Trip function may be bypassed for up to two hours for surveillance testing.

s s -

The provisions of Specification 3.0.4 are not applicable.

ACTION STATEMENTS _

ACTION 13 - With the number of OPERABLE Channels one less than the Total Numbarr of Channels, be in HOT STANDBY within 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />; however, one channel may be bypassed for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for surveillance testing per Specification 4.3.2.1.1.

ACTION 14 - With the number of OPERABLE Channels one less than the Total Numbetr of Channels, operation may prcceed until perfor :ance of the next required CHANNEL i"Ut!CTIONAL TEST provided the inoperable channel is placed in the tripped condition within 1 hoisr.

ACTION 15 - With a channel associated with an operating loop inoperable, restore the inoperable channel to OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or be in HOT SHUTDOWN within the following 12 h.;'rs; however, one channel associated with an operating loco may be bypassed for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for surveillance testing per Specification 4.3.2.1.1.

ACTION 16 - With the number of OPERABLE Channels one less than the Total Number of Channels, operation may proceed provideo the .

inoperable channel is placed in the bypassed condition and the minimum Channels OPERABLE requirements is demonstrated within I hour; one additional channel may be bypassed for up to 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> for surveillance testing per Specification 4.3.2.1.1.

ARLEY - UNIT l 3/4 3-21 lI54 238

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TABLE 3.3-3 (Continued} {0)b ACTION 17 - With less than the Minimum Channels OPE:.ABLE, coeration may continue provided the containment purge and exhaust valves are maintained closed.

ACTION 18 - With the number of OPERABLE Channels one less than the Total Number of Channels, 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 be in at least HOT STAMOBY within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />. _

ACTION 19 - With the number of OPERABLE Channels one less than the Total Number of Channels, operation may proceed provided the inoperable channel is placed in the tripped condition within one hour. j ENGINEERED SAFETY FEATURES INTERLOCKS DESIGNATICN CON'ITION AND SETPOINT FUNCTION P-11 With 2 of 3 pressurizer P-ll pre. vents anual block pressure channels > 2010 of safety injection actuation ps19 on low pressuri:er pressure coincident with low pressurizer water level P-12 With 2 of 3 Tavg channels Permits manual block of S.I;

< 541*F. Causes steam line isolation on high steam flow; Affects steam dLeo blocks.

Prevents manual block of With 2 of 3 T"V9 channels

> 545'F safety injection actuation on low steam line cressure.

Il54 239 FARLEY - UNIT 1 3/4 3-22

TABLE 3.3-4 (Continued)

"1 ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTRUMENTATION TRIP SETPOINTS a

FUNCTIONAL UNIT TRIP SETPOINT ALLOWABLE VALUES h 6. Auxiliary Feedwater H

H a. Steam Generator 2 15% of narrow range h 14% of narrow range instru-Water Level-Low-Low instrument span-each steam ment span-each steam ge.nerator generator

b. Undervoltage - RCP h 2680 RCP bus voltage 2:2640 RCP bus voltage
c. S.I. see 1 above (all SI Setpoints)

R 7. Loss of Power s~

y a. 4.16 KV Emergency Bus Under- h3255 volts bus voltage

  • h3222 volts bus voltage
  • g voltage (Loss of Voltage)
b. 4.16 KV Emergency Bus Under- 33675 volts bus voltagt
  • h3638 volts bus voltage
  • voltage (Degraded Voltage)
  • The time delay shall be within 5% of that specified in the manufacturer's published undervoltage relay time curves.

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D}{D QD f TABLE 3.3-5 (Centinued)

ENGINEERED SAFETY FEATURES RESPONSE TIMES _

INITIATING SIGNAL AND FUNCTION RESPONSE TIME IN SECON05 '

7. Containment Pressure--Hich-Hich __ _
a. Steam Line Isolation 1 7.0

~ '

8. Containment Pressure--Hich-Hich'-Hich , ,
a. Containment Spray 1 45.0
b. Containment Isolation-Phase "B" Not Applicable
9. Steam Generator Water Level--Hich-Hich Turbine Trip-Reactor Trip
a. 152 ###

. b. Feedwater Isolation 1 32.0

10. Steam Generator Water Level--Low-Lew
a. Motor-driven Auxiliary Fee 6<ater Pumps ** 60.0
b. Turbine-driven Auxiliary Feedwater Pumps *** 60.0
11. Undervoltace RCP
a. Turbine-driven Auxiliary 50.0
12. S.I. Sicnal __
a. Motor-driven Auxiliary Feedwater Pump 50.0 Insert 1................. .

D -

INSERT 1

13. Loss of Power
a. 4.16 KV Emergency Bus 1.2 ****

Undervoltage (Loss of Voltage)

o. 4.16 KV Emergency Bus *****

Undervoltage (Degraded Voltage)

        • The response time limit from voltage decreasing below 68% of nominal voltage to generation of the Diesel start signal.
          • The response time shall include the time delay associated with the undervoltage relays as determined in Table 3.3-4 plus an additional second associated with interposing relay and circuit breaker operation.

1154 242

TABLE 4.3-2(Continued [

5 f.! ENGINEERED SAFETY FEATURE ACTUATI0ll SYSTEH INSTRUMENTATION Q SUIEVTitTAhCE RET)UIREHENTS i

c- CilANNEL H0 DES IN WillCll 5 CilAHilEL CilANNEL FUNCTIONAL SURVEILLANCE FUNCT10tlAL UNIT CilECK CAllBRATION , TEST

] REQUIRED

4. STEAM LillE ISOLATION
a. Hanual N.A. H.A. 11 ( 1 ) 1, 2, 3, 4
b. Automatic Actuation Logic H.A. , H.A. H(2) 1, 2, 3, 4
c. Containment Pressure-- S R H 1, 2, 3 liigh-liigh u d. Steam Flow in Two Steam S R H 1, 2, 3 h Lines--liigh Coincident with T,yg-- Low-Low c@
e. Steam Line Pressure-Low S R H 1, 2, 3
5. TURBillE TRIP All0 FEEDWATER ISOLATI0li
a. Steam Generator llater S R H 1, 2, 3 Level--liigh-lii0h
6. Auxiliary feedwater Ln
a. Steam Generator Water S R H ,

1, 2, 3 g

g n

Level-Low-Low f u b. Undervoltage - RCP S R H 1

c. S . I .' See 1 above (all SI surveillance requirements)

Insert 2...........

INSERT 2

7. Loss of Power
a. 4.16 KV Energency Bus N/A R (3) H (4) 1, 2, 3 Undervoltage (Toss of Voltage)
b. 4.16 KV Emergency Bus N/A R (3) H (4) 1, 2, 3 Undervoltage (Degraded Voltage) m h

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T_ABLE 4.3-2 (Continued)

TABLE NOTATION (1) Manual actuation switches shall be tested at least once per 18 months during shutdown. Each train or logic channel at all other circuitry associated with manual safeguards actuation shall receive a CHANNEL FUNCTIONAL TEST at least once every other 31 days.

(2) Each train or logic channel shall be tested at least every other 31 days.

(3) Channel calibration shall exclude actuation of the final trip actuation relay.

(4) Functional testing shall consist of verification of relay operation upon removal of input voltage and operation of 2-out-of-3 logic excluding the final trip actuation relay.

FARLEY - UNIT 1 3/4 3-34 1154 245

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

3. Verifying the fuel transfer pump can be started and transfers fuel from the storage system to the day tank,
4. Verifying the diesel starts from ambient condition, and accelerates to at least 900 rpm for the 2850 Kw generator and 514 rpm for the 4075 Kw generator < in 10 seconds,
5. Verifying the generator is synchronized, loaded to > 2050 kw for the 4075 kw generator and > 1475 kw for the 2850

'kw generator and operates for > 60 minutes, and

6. Verifying the diesel generator is aligned to provide standby power to the associated emergency busses.

. 7. Verifying that the automatic load sequence timer is -

OPERABLE with each load sequence time within + 10", of its re' quired value or 0.5 seconds which ever is gr_ eater.

. b. At least once per 92 days by verifying that a sample of diesel

\. fuel from the fuel storage tank obtained in accordance with ASTM-D270-65 is within the acceptable limits specified in Table 1 of ASTM D975-74 when checked for viscosity, water and sedimen.t, E c. At least once per 18 months dur;ng shutdown by:

f 1.

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Subjecting the diesel to an inspection in accordance with procedures prepared in conjunction with its manufacturer's recommendations for this class of stardby service,

2. Verifying the generator capability to reject, without tripping, a load of > 672 kw for the 4075 kw generator and 448 kw for the 2E50 kw generator.
3. Simulating a loss of offsite power in conjunction.with a

, safety injection test signal, and:

f (8) Verifying the di_sel starts from ambient condition

. - on the auto-start signal, energizes the emergency busses with permanently connected loads, energizes the auto-connected emergency loads through the load sequencer and operates for > 5 minutes while its generator is loaded with the eme,rgency loads.

FARLEY-UNIT 1 3/4 8-3 1154 246

~.

ELECTRICAL POWER SYSTEMS SURVEILLANCE REOUIREMENTS (Continued)

(b) Verifying that all diesel generator trips, except engine overspeed, lubrication oil pressure low and generator differential, are automatically bypasscd upon loss of voltage on the emergency bus and/or safety injection test signal.

4. Verifying the diesel generator operates for 2: 60 minutes while loaded to2:4075 kw for the 4075 kw diesel generator andt 2850 for the 2850 kw diesel generator.
5. Verifying that the auto-connected loads to each diesel generator do not exceed the 2000 hour0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> rating of 4353 kw and 3100 kw for the 4075 generator and the 2850 generator, respectively.
6. Siaulating a loss of offsite power by itself, and:

(a) Verifying de-energization of the emergency buses and load shedding from the emergency buses.

(b) Verifying the diesel starts from ambient condition on the autostart signal, energizes the emergency buses with permanently connected loads, and the sequencer closes the supply breakers for the auto-connected emergency loads.

7. Verifying that on a safety injection test signal (with-out loss of offsite power) the diesel generator starts on the auto-start signal and operates on standby for as 5 minutes.

FARLEY-UNIT 1 3/4 8-4 1154 ?47

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