ML17347A302
| ML17347A302 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 02/20/1987 |
| From: | FLORIDA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML17347A301 | List: |
| References | |
| NUDOCS 8703020476 | |
| Download: ML17347A302 (6) | |
Text
3.18 AUXILIARYFEE WATER SYSTEM 3.18.1 a)
Two independent auxiliary feedwater trains including 3 pumps as specified in Table 3.18-1 and associated flowpaths shall be OPERABLE.
APPLICABILITY: MODES 1, 2, and 3 ACTION:
1)
With one of the two required independent auxiliary feedwater trains inoperable, either restore the inoperable train to an OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or place the affected unit(s) in 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 HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
2)
With both required auxiliary feedwater trains inoperable, within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> either restore both trains to an OPERABLE status, or restore one train to an OPERABLE status and follow ACTION statement 1 above for the other train.
If neither train can be restored to an OPERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, verify the availability of both standby feedwater pumps and place the affected unit(s) in 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 HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
Otherwise, initiate corrective action to restore at least one auxiliary feedwater train to an OPERABLE status as soon as possible and follow ACTIONstatement 1 above for the other train.
(See Note 1 below) 3)
With a single auxiliary feedwater pump inoperable, within 0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br />, verify OPERABILITYof two independent auxiliary feedwater trains, and restore the auxiliary feedwater pump to an OPERABLE status, within 30 days, or place the operating unit(s) in HOT STANDBY within 6
hours and in HOT SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
(See Note 1 below) 0)
The provisions of Specification 3.0.0 are not applicable to the third auxiliary feedwater pump, provided the 30 day limit as described in ACTION statement 3 above is not exceeded.
- (See Note 1 below)
NOTES:
- 1) Refer to Bases Page B3.18-1 for additional guidance.
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'"870220 PDR ADOCK 05000250 PDR 3.18-1 Amendment Nos.
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TABLE3.18-1 AUXILIARYFEEDWATER SYSTEM OPERABILITY Unit Train Steam Su 1
Flow ath SG 3C via MOV-3-1005 or SG 3B via MOV-3-1000(1)
~Pum A or C(2)
Dischar e Water Flow aths SG 3A via CV-3-2816 SG 3B via CV-3-2817 SG 3C via CV-3-2818 SG 3A via MOV-3-1003 or SG 3B via MOV-3-1000(1)
B or C(2)
SG 3A via CV-3-2831 SG 3B via CV-3-2832 SG 3C via CV-3-2833 SG 0C via MOV-0-1005 or SG 0B via MOV-4-1000(1)
A or C(2)
SG 0A via CV-0-2816 SG 0B via CV-0-2817 SG 0C via CV-0-2818 SG 0A via MOV-0-1003 or SG 0B via MOV-0-1000(l)
B or C(2)
SG 0A via CV-0-2831 SG 0B via CV-0-2832 SG 0C via CV-0-2833 NOTES (1)
Steam admission valves MOV-3-1000 and MOV-0-1000 can be aligned to either train to restore operability in the event MOV-3-1003 or MOV-3-1005, or MOV-0-1003 or MOV-0-1005 are inoperable.
(2)
During single and two unit operation, one pump shall be OPERABLE in each train and the third auxiliary feedwater pump shall be OPERABLE and capable of being powered
- from, and supplying water to either train, except as noted in ACTION 0 of Technical Specification 3.18.
The third auxiliary feedwater pump (normally the "C" pump) can be aligned to either train to restore OPERABILITYin the event one of the required pumps is inoperable.
3.18-2 Amendment Nos.
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B3.18 BASES - AUXILIARYFEEDWATER SYSTEM The OPERABILITY of the Auxiliary Feedwater System ensures that the Reactor Coolant
.System can be cooled* down to less than 350oF from normal operating conditions in the event of a total loss of off-site power.
Steam can be supplied to the pump turbines from either or both units through redundant steam headers.
Two D.C.
motor operated valv'es and one A.C. motor operated valve on each unit isolate the three main steam lines from these headers.
Both the D.C. and A.C. motor operated valves are powered from safety'related sources.
Auxiliary feedwater can be supplied through redundant lines to the safety related portions of the main feedwater lines to each of the steam generators.
Air operated fail closed flow control valves are provided to modulate the flow to each steam generator.
Each steam driven auxiliary feedwater pump has sufficient capacity for single and two unit operation to ensure that adequate feedwater flow is available to remove decay heat and reduce the Reactor Coolant System temperature to less than 350oF when the Residual Heat Removal System may be placed into operation.
ACTION statement 2 describes the actions to be taken when both auxiliary feedwater trains are inoperable.
The requirement to verify the availability of both standby feedwater pumps is to be accomplished by verifying that both pumps have successfully passed their monthly surveillance tests within the last surveillance interval.
The requirement to complete this action before beginning a unit shutdown is to ensure that an alternate feedwater train is available before putting the affected unit through a transient.
If no alternate feedwater trains are available, the affected unit is to stay at the same condition until an auxiliary feedwater train is returned to service, and then invoke ACTION statement 1 for the other train.
If both standby feedwater pumps are made available before one auxiliary feedwater train is returned to an OPERABLE status, then the affected unit(s) shall be placed 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 HOT SHUTDO)VN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.
ACTION statement 3 describes the actions to be taken when a single auxiliary feedwater pump is inoperable.
The requirement to verify that two independent auxiliary feedwater trains are OPERABLE is to be accomplished by verifying that the requirements for Table 3.18-1 have been successfully met for each train within the last sur veillance interval.
ACTION statement 0 states that the provisions of Specification 3.0.0 are not applicable to the third auxiliary feedwater pump provided it has not been inoperable for longer than 30 days.
This means that a unit(s) can change OPERATIONAL MODES during a unit(s) heatup with a single auxiliary feedwater pump inoperable as long as the requirements of ACTION statement 3 are satisfied.
B3.18-1 Amendment Nos.
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