ML20035C179
| ML20035C179 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 04/01/1993 |
| From: | BALTIMORE GAS & ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20035C178 | List: |
| References | |
| NUDOCS 9304060275 | |
| Download: ML20035C179 (6) | |
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A1TACIIMENT (2)
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TECIINICAL SPECIFICATION PAGES UNIT 1 3/48-9 j
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9304060275 930401 PDR ADOCK 05000317 P
3/4.8 ELECTRICAL POWER SYSTEMS 3/4.8.2 ONSITE POWER DISTRIBUTION SYSTEMS 1
A.C. Distribution - Operating l
LIMITING CONDITION FOR OPERATION 3.8.2.1 The following A.C. electrical busses shall be OPERABLE and energized from sources of power other than the diesel generators with tie breakers open between redundant busses:
4160 volt Emergency Bus fil t
4260 volt _ Emergency Bus #14 480 volt Emergency Bus fila 480 volt Emergency Bus #11B 480 volt Emergency Bus #14A 480 volt Emergency Bus #14B 480 volt Motor Control Center fl04R
- 50 480 volt Motor Control Center #114R 120 volt A.C. Vital Bus fil eneyjrted -bn k4.5 Chsecnkd Invek '
volt A.C. Vital Bus #12 enery2d -Erom Ns ctsekd baseder
."120 volt. A.C. Vital Bus #13 eneryzed Srom 35 QSSCf DLN iN 120 volt A.C. Vital Bus i14 energnxd Oom N 60 120 APPLICABILITY: MODES 1, 2, 3 and 4.
ACTION: Witt less than he abo complemeh of A.C.
sses OPE BLE, restore the fpoperable b to OP BLE statu within 8 urs or b in at least HOT STAROBY within t e next hours and WCOLDSHU}UOWNwith' the follcwing 30 ho\\rs.
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SURYEILLANCE REQUIREMENTS j
4.8.2.1 The spect fied A.C. busses shall be determined OPERABLE and energized from A.C. sources other than the diesel generators with tie breakers open between redundant busses at least once per 7 days by verifying correct breaker alignment and indicated power availability.
CALVERT CLIFFS - UNIT 1 3/4 8-9 Amendment No. 179
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INSERT A ACTION:
- a. With less than the above complement of 4160 and 480-volt A.C. busses OPERABLE, restore the ino aerable bus to OPERABLE status 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 IIOT STANDBY wit lin 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 SIIUTDOWN 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 less than the above complement of 120-volt A.C. vital busses OPERABLE, either:
- 1. Restore the de-energized vital bus to OPERABLE status by re-energizing the vital bus from its associated inverter 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 IIOT 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 SIIUTDOWN within the i
followir.g 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />; OR
- 2. Power the vital bus from the associated backup bus within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. Restore the vital bus to OPERABLE status by re-energizing the vital bus from its associated inverter 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 IIOT 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 SIIUTDOWN 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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TECIINICAL SPECIFICATION PAGES f
UNIT 2 3/48-9 P
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3/4.8 ELECTRICAL POWER SYSTEMS
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3/4.8.2 ONSITE POWER DISTRIBUTION SYSTEMS A.C. Distribution - Operatino LIMITING C0uDITION FOR OPERATION 3.3.2.1 The following A.C. electrical busses shall be OPERABLE and energized from sources of power other than the diesel generators with tie breakers open between redundant busses:
4150 volt Emergency Bus #21 4160 volt Emergency Bus #24 480 volt Emergency Bus #21A 480 volt Emergency Bus #21B 480 volt Emergency Bus #24A 480 volt Emergency Bus #24B 480 volt Motor Control Center #204R
- L1 480 volt Motor Control Center #214R volt A.C. Vital Bus #21 ener3\\2fd 4iorn d3 OSScorMed in 120 volt A.C. Vital Bus-f22 entgtt.ed Oorn 'dS QSSOCAhd (nuetEr-120 volt A.C. Vital Bus #23 energt7;ed Ocm dS CASSoc Akd N
120 volt A.C. Vital Bus #24 entr3\\2<d Oh US MN 120 APPLICABILITY: MODES.1, 2, 3 and 4.
ACTION: W h less an the abo complemen f A.C. b ses OPE BLE, restore th inoperabl bus to OP BLE status thin 8 h rs or in at least HOT S DBY withi he next 6 rs and in 'OLD SHUT OWN wit n the following 30 urs.
RputR te dh Z n s e r'r R y
SURVEILLANCE REQUIREMENTS 4.8.2.1 The specified A.C. busses shall be determined OPERABLE and energized from A.C. sources other than the diesel generators with tie breakers open between redundant busses at least once per 7 days by verifying correct breaker alignment and indicated power availability.
CALVERT CLIFFS - UNIT 2 3/4 8-9 Amendment No. 156 i
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INSERT A ACTION:
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- a. With less than the above complement of 4160 and 480-volt A.C. busses OPERABLE, restore the inoperable bus to OPERABLE status 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 IIOT 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 SIIUTDOWN 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 less than the above complement of 120-volt A.C. vital busses OPERABLE, either:
- 1. Restore the de-energized vital bus to OPERABLE status by re-energizing the vital bus from its associated inverter 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 IIOT 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 SIIUTDOWN within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />; OR
- 2. Power the vital bus from the associated backup bus within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. Restore the vital bus to OPERABLE status by re-energizing the vital bus from its associated inverter 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 IIOT 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 SIIUTDOWN 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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