ML19317E186
| ML19317E186 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 06/03/1977 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19317E183 | List: |
| References | |
| NUDOCS 7912170426 | |
| Download: ML19317E186 (5) | |
Text
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TABLE 3.3-3 (Continued)
ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTRUMENTATION MINIMUM TOTAL NO.
CilANNELS CilANNELS APPLICAllLE FUNCTIONAL UNIT OF CilANNELS TO TRIP OPERABLE OPERATING MODES ** ACT ION ***
LOSS OF POWER a.
4.16 kv Emergency Bus Undervoltage (Loss of Vol tage) 4(3)/ Bus 2/ Bus 3(2)/ Bus I, 2, 3 A or B P
b.
4.16 kv Emergency Bus y
Undervoltage (Degraded R
Vol tage) 4(3)/ Bus 2/ Bus 3(2)/ Bus 1, 2, 3 A or B 5
y 9
G E
N E
9
'O y
CD H
5 to m
u N
- (Entries in parenthesis are applicable for O
2 out of 3 coincidence logic)
N
- Required when ESF equipment is b
required to be operable
- Action A for 2 out of 4 logic Action B for 2 out of 3 logic
TABLE 3.3-3 (Continued)
ACTION STATEMENTS ACTION A With the number of OPERABLE channels one less than the Total Number of Channels operation may proceed provided both of the following conditions are satisfied:
a.
The inoperable channel is placed in the tripped condition within one hour, b.
The Minimum Channels OPERABLE requirement is met; however, 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).
ACTION B
- With the number of OPERABLE Channels one less than the Total Number of Channels operation may proceed until performance of the next required CHANNEL FUNCTIONAL TEST provided the inoperable channel is placed in the tripped condition within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />.
i TABLE 3.3-4 (Continued) l ENGINEERED SAFETY FEATilRE ACTUATION SYSTEM INSTRUMENTATION TRIP VALUES ALLOWABLE FUNCTIONAL llNIT, TRIP VAllif VALUES 1
LOSS OF l0WLi:
a.
4.16 kv Emergency Bir. I'wh :.91 t age
( 1 )) volts with a
+
(
[ )} seccnd time delay
+
volts with a (Loss of Voltage)
(
second time delay
(
b.
4.16 kv Emergency f"' Unilervoltage
(
1 )) second time delay
+
volts with a
(
1 ) volts with a) second time delay
+
(Degraded Voltag")
(
(
1 1
1 l
)
i l
1 i
TABLE 4.3-2 (Continued)
ENGINEERED SAFETY FEATURE ACTUATION SYSTEM INSTRUMENTATION SURVEILLANCE REQUIREMENTS i
i OPERATING i
CHANNEL MODES IN WHICH CHANNEL CHANNEL FUNCTIONAL SURVEILLANCE FUNt.TIONAL UNIT CHECK CALIBRATION,
REQUIRED TEST l i'.. OF POWER a.
4.16 kV Emergency Bus Undervoltage (Loss of Voltage)
S R
M 1,2,3 h.
4.16 kv Emergency Bus undervoltage (Degraded 4
Voltage)
S R
M 1, 2, 3 4
1 5 = at least once per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> j
R at least once per 18 months l
M = at least once per 31 days I
i i
l
r o
o ELECTRICAL POWER SYSTiMS SURVEILLANCE REQUIREMENTS 4.8.1.1.X Each diesel generator shall be demonstrated OPERABLE:
a.
At least once per 18 months during shutdown by:
1.
Simulating a loss of offsite power in conjunction with a safety injection actuation test signal, and:
a) Verifying de-energization of the emergency busses and load shedding from the emergency busses, b) Verifying the diesel starts f.om 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 emergency loads.
c) Verifying that on diesel generator trip, the loads are shed from the energency busses and the diesel re-starts on the auto-start signal, the energency busses are energized with permanently connected loads, the auto-connected emergency loads are energized through the load sequencer and the diesel operates for > 5 minutes while its generator is loaded with the emergency loads.
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