ML20116E865

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Proposed Tech Specs Modifying Inverter/Battery Chargers by Incorporating Listed Changes Into CPSES Units 1 & 2 TSs
ML20116E865
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 07/31/1996
From:
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20116E850 List:
References
NUDOCS 9608060148
Download: ML20116E865 (9)
v • d • e


Text

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ATTACHMENT 3 TO TXX 96432 AFFECTED TECHNICAL SPECIFICATION PAGES (NUREG 1468)

(pages 3/4 8 12, 3/4 8-15, 3/4 8-16, 3/4 8 17 and B 3/4 8 2a) 9600060148 960731 PDR ADOCK 05000445 P PDR

't 4

D. C. SOURCES SURVEILLANCE REQUIREMENTS (Continued)

b. At least once per 92 days and within 7 days after a battery discharge l with battery terminal voltage below 110 volts, or battery overcharge I with battery terminal voltage above 150 volts, by verifying that:
1) The parameters in Table 4.8-2 meet the Category S limits,
2) There is no visible corrosion at either terminals or connectors, orthecopr.ectionresistanceoftheseitemsislessthan 150 x 10' ohm, and
3) The average electrolyte temperature of 12 connected cells is above 70*F.
c. At least once per 18 months by verifying that:
1) The cells, cell plates, and battery racks show no visual indication of physical damage or abnormal deterioration,
2) The cell-to-cell and terminal connectior s are clean, tight, and coated with anticorrosion material, ,
3) The resistance of each cell-to , cell and terminal connection is less than or equal to 150 x 10' ohm, and g ytra,h or-LR
4) The battery charger will supply at least amperes at 13 volts i for at least 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.
d. At least once per 18 months, during shutdown, by verifying that the battery capacity is adequate to supply and maintain in OPERABLE status all of the actual or simulated emergency loads for the design duty cycle when the battery is subjected to a battery service test;
e. At least once per 60 months, during shutdown, by verifying that the battery capacity is at least 805 of the manufacturer's rating when subjected to a performance discharge test. Once per 60-month interval this perfonnance discharge test may be performed in lieu of the battery service test required by Specification 4.8.2.1d.; and
f. At least once per 18 months, during shutdown, by giving performance discharge tests of battery capacity to any battery that shows signs of degradation or has reached 85% of the service life expected for the application. Degradation is indicated when the battery capacity drops more than 10% of rated capacity from its average on previous performance tests, or is below 90% of the manufacturer's rating.

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n COMANCHE PEAK - UNITS 1 AND 2 3/4 8-12

3/4.8.3 ONSITE POWER DISTRIBUTION OPERATING LIMITING CONDITION FOR OPERATION 3.8.3.1 The following electrical busses shall be energized in the specified  ;

manner:

a. Train A A.C. Emergency Busses consisting of:

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.g 1) 6900-Volt Emergency Bus 1EA1 for Unit 1 (2EA1 for Unit 2),

i u 2) 480-Volt Emergency Bus 1EB1 from transformer TIEB1 for Unit 1

'E (2EB1 from transformer T2EB1 for Unit 2), and i s 3) 480-Volt Emergency Bus 1EB3 from transformer TIEB3 for Unit 1 i j (2EB3 from transformer T2EB3 for Unit 2). I b

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b. Train B A.C. Emergency Busses consisting of:

fT 1) 6900-Volt Emergency Bus IEA2 for Unit 1 (2EA2 for Unit 2),

(4 2) 480-Volt Emergency Bus 1EB2 from transformer TIEB2 for Unit 1 (2EB2 from transformer T2EB2 for Unit 2), and j 3) 480-Volt Emergency Bus 1EB4 from transformer TIEB4 for Unit 1

) (2EB4 from transformer T2EB4 for Unit 2).

a c. Il8-Volt A.C. Instrument Bus 1PCI and IEC1 for Un" 1 (2PCI and 2EC1 for Unit 2) energized from its associated invertei onnected to D.C'. t4g

[ Bus IEDI* for Unit 1 (2ED1* for Unit 2);

,e d. 118-Volt A.C. Instrument Bus IPC2 and IEC2 for Uni 1 (2PC2 and 2EC2  !

for Unit 2) energized from its associated inverte onnected to D.C. '

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' Bus IED2* for Unit 1 (2ED2* for Unit 2); i kggg l

e. 118-Volt A.C. Instrument Bus IPC3 and IEC5 for Un11 for Unit 2) energized from its associated inverte M onn(2PC3 and 2EC5 ected to D.C. t4g

<5 a Bus IED3* for Unit 1 (2ED3* for Unit 2);

I'gS f. 118-Volt A.C. Instrument Bus IPC4 and IEC6 for UntLJ for Unit 2) energized from its associated invertett'onn(2PC4 and 2EC6

~3 e e ected to D.C. LAR  ;

Bus IED4* for Unit 1 (2ED4* for Unit 2);

g. Train A 125-Volt D.C. Busses IEDI and 1E03 for Unit 1 (2EDI and 2ED3
' 6 for Unit 2) energized from Station Batteries BTIED1 and BTIED3 for 4 Unit 1 (BT2EDI and BT2ED3 for Unit 2), respectively; and r h. Train B 125-Volt D.C. Busses 1ED2 and IED4 for Unit 1 (2ED2 and 2ED4 for Unit 2) energized from Station Batteries BTIED2 and BTIED4 for Unit 1 (BT2ED2 and BT2ED4 for Unit 2), respectively.
  • The inverters may be disconnected from one D.C. bus for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> as nec-essary, for the purpose of performing an equalizing charge on their associated battery train provided: (1) their instrument busses are energized, and (2) the instrument busses associat with the other battery train are energized from I their associated inverter d connected to their associated D.C. bus.

4 LAR COMANCHE PEAK - UNITS 1 AND 2 3/4 8-15 Unit 1 - Amendment No. 14

ONSITE POWER DISTRIBUTION LIMITING CONDITION FOR OPERATION (Continued)

APPLICABILITY: MODES 1, 2, 3, and 4.

ACTION:

a. With one of the required trains of A.C. emergency busses not fully energized, reenergize the trains within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least HOT STANDBY 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 />.

b.

With one A.C._ instrument bus or two A.C. instrument busses (consisting '

of one(Z.EKu]Trotection channel and one .- ital bus of the same LAR .

train) deenergized, reenergize the A.C. in rument bus (ses) 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 at least HOT STANDBY 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 />.

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c. With one_A.C._ instrument bus or two A.C. i of one ' """jirotection channel and one, rument busses (consisting '

ital bus of the same L AA train) opera ng with the associated inverter (sf*'not connected with the D.C. source (s), or operating with the' inverter (s) not supplying the A.C. instrument bus (but with the instrument bus energized from its associated bypass distribution source energize the A.C. instrument bus (ses) from its associated inverte onnected to its associated D.C. '

bus within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT STANDBY 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 />.

d. With one D.C. bus not energized from its associated station battery, reenergize the D.C. bus from its associated station battery 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 at least HOT STANDBY 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 />.

SURVEILLANCE REQUIREMENTS 4.8.3.1 The specified busses shall be determined energized in the required manner at least once per 7 days by verifying correct breaker alignment and indicated voltage on the busses.

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spa 1 COMANCHE PEAK - UNITS 1 AND 2 3/4 8-16

ONSITE POWER DISTRIBUTION SHUTDOWN .

LIMITING CONDITION FOR OPERATION 3.8.3.2 As a minimum, the following electrical busses shall be energized in the specified manner:

a. One train of A.C. emergency busses consisting of one 6900-volt and two 480-volt A.C. emergency busses;
b. Two 118-volt A.C. instrument busses (channel-oriented) energized from their associated inverters % onnected to their respective D.C. busses; igg

} c. One train of A.C. instrument busses consisting of two 118-ye.it A.C.

i instrument busses energized from their associated inverterWonnected {L4A, i

to their respective D.C. busses. Busses shall be of the same train as l Specifications 3.8.3.2a. and d.; and ,

i j d. One train of D.C. busses consisting of two 125-volt D.C. busses energized from their associated battery banks. Busses shall be of the <

j same train as Specifications 3.8.3.2a. and u

! APPLICABILITY: MODES 5 and 6. l 3

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l With any of the above required electrical busses not energized in the required

manner, immediately suspend all operations involving CORE ALTERATIONS, positive reactivity changes, or movement of irradiated fuel, initiate corrective action to energize the required electrical busses in the specified manner as soon as possible, and within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, depressurize and vent the RCS through at least a 1

2.98 square inch vent.

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SURVEILLANCE REQUIREMENTS 4.8.3.2 The specified busses shall be determined energized in the required manner at least once per 7 days by verifying correct breaker alignment and indicated voltage. on the busses.

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COMANCHE PEAK - UNITS 1 AND 2 3/4 8-17

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ELECT'RICAL POWER SYSTEMS BASES A.C. SOURCES. D.C. SOURCES. and ONSITE POWER DISTRIBUTION (Continued)

The operational requirement to energize the instrument busses from their associated inverters connected to its associated D.C. bus is satisfied only when the inverter's output is from the regulated portion of the inverter and not from the unregulated bypass source via the internal static switch.Y Q

Verifying average electrolyte temperature above the minimum for which the battery was sized, total battery terminal voltage on float charge, connection resistance values, and the performance of battery service and discharge tests ensures the effectiveness of the charging system, the ability to handle high  !

discharge rates, and compares the battery capacity at that time with the rated  ;

capacity.

Table 4.8-2 specifies the normal limits for each designated pilot cell and each connected cell for electrolyte level, float voltage, and specific gravity. The limits for the designated pilot cells float voltage and specific gravity, greater than 2.13 volts and 0.015 below the manufacturer's full charge specific gravity or a battery charger current that had stabilized at a low value, is characteristic of a charged cell with adequate capacity. The normal limits for each connected cell for float voltage and specific gravity, greater than 2.13 volts and not more than 0.020 below the manufacturer's full charge specific gravity with an average specific gravity of all the connected cells not more than 0.010 below the manufacturer's full charge specific gravity, ensures the OPERABILITY and capability of the battery.

1 I

l The associated inverter is either the dedicated inverter for the instrument bus (protection channel or vital bus) or the installed spare inverter for that train. The design configuration allows the spare inverter to be manually aligned to substitute for any of the four (two protection channel and two vital bus) inverters for the train. Interlocks and procedural controls ensure that the spare inverter feeds the loads of only one inverter at a time and that the power source for the spare inverter is the same as the inverter whose loads are being fed by the spare inverter. Additionally, the associated inverters have ratings suitable to support the maximum load of any of the protection channels or the vital busses. .

COMANCHE PEAK - UNITS 1 & 2 8 3/4 8-2a Unit 1 - Amendment No. 43 Unit 2 - Amendment No. 29

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DC Sources-Operating 3.8.4 SURVEILLANCE REQUIREMENTS (continued)-

SURVEILLANCE FREQUENCY SR 3.8.4.6 -------------------NOTE-------------------

This Surveillance shall not be performed in MODE 1, 2, 3. or 4. However, credit may be taken_for unplanned events that satisfy this SR.

Verify each battery charger supplies 2 [400] amps at > [125] V for > [8] hours. [18 months]

SR 3.8.4.7 -------------------NOTES------------------- .

1. The modified performance discharge @

test in SR 3.8.4.8 may'be performed in lieu of the service test in SR 3.8.4.7 once per 60 months.

2. This Surveillance shall not be performed in MODE 1, 2, 3. or 4.

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

Verify battery capacity is adequate to [18 months]

supply, and maintain in OPERABLE status.

l the required emergency loads for the design duty cycle when subjected to a battery service test.

(continued) i WOG STS 3.8-26 Rev 1. 04/07/95

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