ML071100176
| ML071100176 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 05/15/2007 |
| From: | NRC/NRR/ADRO/DORL/LPLIV |
| To: | |
| Saba F, NRR/DORL/LPL4, 301-415-1447 | |
| Shared Package | |
| ML071100162 | List: |
| References | |
| TAC MD2982 | |
| Download: ML071100176 (4) | |
Text
Inverters - Operating 3.8.7 3.8 ELECTRICAL POWER SYSTEMS 3.8.7 Inverters - Operating LOU 3.8.7 The following inverters shall be OPERABLE.
- a. Two Red Train inverters (Yl 1 and Y1 3, Yl 1 and Y1 5, or Y1 3 and Y1 5),
and
- b. Two Green Train inverters (Y22 and Y24, Y22 and Y25, or Y24 and Y25),
NOTE One of the four inverters required by LCO 3.8.7.a and LCO 3.8.7.b may be disconnected from its associated DC bus for _ 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> to perform load transfer to or from the swing inverter, provided:
- a. The associated 120 VAC bus is energized from its alternate AC source; and
- b. The other three 120 VAC buses are energized from their associated OPERABLE inverters.
APPLICABILITY:
MODES 1, 2, 3, and 4.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.
One of the four inverters A.1 ---------
NOTE-------
required by LCO 3.8.7.a Enter applicable Conditions and LCO 3.8.7.b and Required Actions of inoperable.
LCO 3.8.9, "Distribution Systems - Operating" with any of the 120 VAC buses RS1, RS2, RS3, or RS4 de-energized.
Restore inverter to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> OPERABLE status.
AND 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> from discovery of failure to meet LCO ANO-1 3.8.7-1 Amendment No. 2-1-5, 230
Inverters - Operating 3.8.7 CONDITION REQUIRED ACTION COMPLETION TIME B.
Required Action and B.1 Be in MODE 3.
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time not met.
AND OR B.2 Be in MODE 5.
36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> Two or more of the four inverters required by LCO 3.8.7.a and LCO 3.8.7.b inoperable.
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.7.1 Verify correct inverter voltage, frequency, and 7 days alignment to associated 120 VAC buses RS1, RS2, RS3, and RS4.
ANO-1 3.8.7-2 Amendment No. 2-1-5, 230
Distribution Systems - Operating 3.8.9 3.8 ELECTRICAL POWER SYSTEMS 3.8.9 Distribution Systems - Operating LCO 3.8.9 APPLICABILITY:
T.... AC, Dn, and !20 VAC "e,*..,;,..i power ditibto
,.ub..st,,m.
hall..
be OPERABLE.
MODES 1, 2, 3, and 4.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A.
One or more AC electrical A.1 Restore AC electrical power 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> power distribution distribution subsystem(s) to subsystem(s) inoperable.
OPERABLE status.
AND 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> from discovery of failure to meet LCO B.
One or more 120 VAC B.1 Restore 120 VAC electrical 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> electrical power power distribution distribution subsystem(s) subsystem(s) to AND (RS1, RS2, RS3, RS4)
OPERABLE status.
16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> from discovery of failure to meet LCO C.
One or more DC electrical C.1 Restore DC electrical 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> power distribution power distribution subsystem(s) inoperable, subsystem(s) to AND OPERABLE status.
16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> from discovery of failure to meet LCO D.
Required Action and D.1 Be in MODE 3.
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> associated Completion Time not met.
D.2 Be in MODE 5.
36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> ANO-1 3.8.9-1 Amendment No. 245,248, 230
Distribution Systems - Operating 3.8.9 CONDITION REQUIRED ACTION COMPLETION TIME E.
Two or more electrical E.1I Entr LCO 3.0.3.
immediately power distribution subsystems inoperable that result in a loss of function.
SURVEILLANCE REQUIREMENTS SURVEILLANCE FREQUENCY SR 3.8.9.1 Verify correct breaker alignments to required AC, DC, 7 days and 120 VAC bus electrical power distribution subsystems.
ANO-1 3.8.9-2 Amendment No. 245,248, 230