ML20207C980
| ML20207C980 | |
| Person / Time | |
|---|---|
| Site: | Big Rock Point File:Consumers Energy icon.png |
| Issue date: | 12/22/1986 |
| From: | CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | |
| Shared Package | |
| ML20207C957 | List: |
| References | |
| NUDOCS 8612300295 | |
| Download: ML20207C980 (9) | |
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ATTACHMENT Consumers Power Company Big Rock Point Plant Docket 50-155 PROPOSED TECHNICAL SPECIFICATION PAGE CHANGES December 22, 1986 8612300295 861222 PDR ADOCK 05000155 P
PDR s
8 Pages TSB1286-0289A-NLO4
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Limiting Conditions for Operation Surveillance Requirements l
11.3.5.3 EMERGENCY POWER SOURCES 11.4.5.3 EMERGENCY POWER SOURCES j
Applicability:
Applicability:
1 Applies to the operational status of the Applies to the periodic testing requirements i
emergency power sources, for the emergency power sources.
i Objective:
Objective:
To assure the capability of the emergency To assure the operability of the emergency power sources to provide power required for power sources to provide emergency power in i
emergency equipment in the event of a Loss of the event of a Loss of Coolant Accident, un Coolant Accident.
E Specification:
A.
The emergency power system surveillance A.
For all reactor operating conditions ex-will be performed as indicated below.
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cept cold shutdown, there shall normally In addition, components on which mainte-i be available one 138 kV line, one 46 kV nance has been performed will be tested.
E
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line, one diesel generator system, one 3
stacion battery system, and four RDS un-1.-
During each operating cycle -
g terruptible power supplies including a
l batteries, except as specified below:
(a) Test of automatic initia-5 l
tion sensors and load test j
the emergency diesel to y
j 1.
Refueling operations and related 180-200 kW generator output j
testing may be conducted with the for at least 20 minutes.
j 138 kV line de-energized.
(b) Test and calibrate the 1
2.
The 46 kV line or the diesel generator following instruments and l
may be out of service for repair for controls associated with.
periods up to three (3) days during diesel generator:
4 reactor operation and for extended f
periods during refueling or shutdown (1) Fuel oil' level.
l operations.
(2) Oil Pressure' tripping..
i (3) Water temperature tripping.
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146 Amendment No. 10 1
June 3, 1976 j
TSB1286-0289A-NLO4 1
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Limiting Conditions for Operation Surveillance Requirements 11.3.5.3 EMERGENCY POWER SOURCES (Contd) 11.4.5.3 EMERGENCY POWER SOURCES (Contd) 3.
The diesel generator fuel supply (4) Overspeed tripping.
shall be adequate for three-day (5) Battery undervoltage alarm.
operation.
4.
If Specifications A.2 or A.3 are not (c) Verify the automatic transfer met, a normal orderly shutdown shall of station power frem the be initiated within one (1) hour and 138 kV line to the 46 kV line.
the reactor shall be shut down as described in Section 1.2.5(a) with-(d) Verify the automatic transfer of 4
in twelve (12) hours and shut down power sources for the lY and 2Y m
as described in Section 1.2.5(a) instrument and control panels.
and (b) within the following 5
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. During refueling opera-(e) Verify the cells, cell plates, j
tions cease all changes which could and battery racks show no affect reactivity.
visual indication of physical 5"
damage or abnormal i
5.
The station battery system, shall deterioration for the station E
j be operable under all conditions battery, and the RDS batteries.
5 g
except during cold shutdown. If the station battery is inoperable, (f) Verify the cell-to-cell and g
no actions shall be taken which terminal connections are clean, 5
result in a reactivity addition, tight, free of corrosion and except cooldown, or which might coated with anti-corrosion result in the primary coolant material for the station
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system drained.
battery and the RDS batteries.
6.
If Specification A.5 is not met a normal
- C orderly shutdown of the reactor shall be (g) Verify that the battery initiated within one (1) hour and the charger for the station l
reactor shall be shut down as described battery and the RDS batteries in Section 1.2.5(a) within twelve will supply at least 30 amperes I
(12) hours and shut down as described at a minimum of 135 volts for in Section 1.2.5(a) and (b) within the at least 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
I 147 Amendment No. 42, 43, 51 March 8, 1982 TSB1286-0289A-NLO4
Limiting Conditions for Operation Surveillance Requirements 11.3.5.3 EMERGENCY POWER SOURCES (Contd) 11.4.5.3 EMERGFNCY POWER SOURCES (Contd) 7.
One RDS uninterruptible power supply (h) Verify that the capacity of the including battery may be out of service station battery and the RDS as described in Section 3.1.5 Action 3.
batteries is adequate to supply supply and maintain in OPERABLE 8.
During reactor power operation, the status all of the actual 138 kV line may be out of service for emergency loads for the design repair for periods up to three (3) days.
time interval when the battery is subjected to a battery 9.
If Specification A.8 is not met, a service test.
The design time ncrmal orderly shutdown shall be interval for the RDS batteries is one hour a'd two hours for initiated within one (1) hour and n
the reactor shall be shut down as the station battery.
described in Section 1.2.5(a) within twelve (12) hours and shut down as (1) Test and calibrate the 2400 described in Section 1.2.5(a) and (b) volt bus undervoltage trip within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, control components as follows:
B.
During power and refueling operations, (1) The undervoltage relays the 2400 volt bus undervoltage 127-10XY, XZ and YZ will components shall be operable or placed drop out on decreasing in the tripped condition, except during voltage of no lower than the monthly channel functional testing 107.1 volts, after a
- period, delay of 5.6 seconds.
(2) The auxiliary timing relay 162-104 will be actuated after a 10 ! 0.5 second time delay upon receiving a signal from all three (3) undervoltage relays.
2.
Monthly -
(a) Test start diesel generator and operate at least the fire pump as a load to 480 V Bus 2B for at least 20 minutes.
148 Proposed TSB1286-0289A-NLO4
Limiting Conditions for Operation Surveillance Requirements 11.4.5.3 EMERGENCY POWER SOURCES (Contd)
(b) Verify that the cell voltage is 22.0 volts and specific gravity is 21.2 of each cell of the station battery; and verify that the cell voltage is 26.0 volts and specific gravity is 21.2 on each cell of the RDS batteries.
(c) Test operate the rod position 4
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motor generator set, g
m
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(d) Perform a channel functional 3
test of the 2400 volt bus N
j undervoltage trip system.
3 1
l 3.
Weekly -
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j (a) The electrolyte level of each 3
i RDS battery pilot cell and l
j the station battery pilot
-i i
cell is between the minimum E
I and maximum level indication marks.
E (b) The pilot cell specific j
gravity for RDS and station shutdown batteries corrected to (77*)F, is 21.2.
(c) The station battery pilot cell voltage is 22.0 volts.
The RDS battery pilot cell voltage is 26.0 volts.
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148a Amendment No. if, #2 51 March 8, 1982 TSB1286-0289A-NLO4 l
Limiting Conditions for Operation Surveillance Requirements 11.4.5.3 EMERGENCY POWER SOURCES (Contd)
(d) The overall battery voltage is 2125 volts for the station battery and the RDS batteries.
9 (e) Test start the diesel generator and run for warm-up period.
(f) Verify that the diesel un generator battery E
electrolyte level above E!
plates and overall battery 5
voltage is 224 volts.
5*
4.
Quarterly - Verify the following:
E (a) That the specific gravity E
)
of the diesel generator
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battery is appropriate for s
continued service.
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(b) That the diesel generator S
battery and battery rack
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i show no visual indication of of physical damage or abnormal deterioration; and (c) That the diesel generator battery terminal connections i
are clean, tight, free of corrosion and coated with anticorrosion material.
148b Amendment No. 42 March 31, 1981 TSB1286-0289A-NLO4 l
Limiting Conditions for Operation Surveillance Requirements 11.4.5.3 ENERCENCY POWER SOURCES (Contd) 5.
Sixty months - At least once per 60 months during shutdown, verify that the RDS batteries and the station battery capacity is at least 80% of the manufacturer's rating when subjected to a performance discharge test. This performance discharge test shall be performed subsequent to the satisfactory completion of the un required battery service test of E
Part 11.4.5.3.A.I.(h).
9 2n E
3 5
e e
O 148c Amendment No. 42 March 31, 1981 TSB1286-0289A-NLO4
Bases:
Normal station power can be provided by the station turbine generator, the 138 kV transmission Ifne or the 46 kV line. These sources are adequate to provide emerEency a-c power. When none of these sources is available, a single emergency diesel generator rated at 200 kW starts automatically to provide emergency a-c power to 480 V Bus 2B.
The weekly starting test is based on Manufacturer's Bulletin 33743-1 for relubrication protection of moving parts. Diesel generator initiation and output circuit breaker closure is accomplished by two voltage sensors: One to detect loss of normal power on Bus 2B; and, the other to provide assurance of generator output prior to automatic closure of the generator output breaker. Additional breaker interlocks are provided to assure that the normal Buses IA and 2A are isolated prior to closing the generator output breaker. This prevents overloading of the generator during the switching period. An undervoltage trip at $89.25% of normal voltage isolates the 2400 volt bus prior to any postulated equipment degradation.
5 The operability of the diesel battery and charger is verified by the weekly starting test of the diesel and by the weekly verification of the electrolyte level and overall battery voltage.
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The diesel fuel oil tank is sized for ten-day full-load operation. Three-day supply is considered E!
adequate to provide fuel makeup.
]z E!
A single station battery supplies pcwer for normal station services and is sized for emergency uses including valves and controls of Loss of Coolant Accidents. The battery can be charged from the f
emergency diesel generator output if normal station power sources are not available.
3o*
The primary core spray valves and the primary containment spray valve a're operated and controlled by power from the station battery. The backup core spray valves and backup containment spray valve are O
G operated by power from normal station power sources or the emergency diesel generator.
l RDS uninterruptible power supplies (UPS) A, B, C, and D (each consisting of a battery, battery charger and an inverter) supply each division (except division 5) with electrical power. Each UPS has outputs of 120 V a-c, 60 Hz, and 125 V d-c.
One of these batteries supplies control power for the emergency diesel Divisions 1 & 2 and 3 & 4 normally receive power from 480 V a-c Buses IA and 2A, generator.
respectively.
In the event of loss of power to either or both buses, provision is included for supplying If all 480 V a-c input power from 480 V a-c Bus 2B which is tied to the emergency diesel generator.
power is lost, the RDS UPS is capable of sustaining its outputs for one hour. The Station Battery 149 Amendment No (2, #3, 51 March 8, 1982 TSB 1286-0289A-NLO4
a Bases (Contd) has adequate capacity to supply and maintain in an operable status all of the emergency loads during a Loss of Coolant Accident plus an assumed Loss of AC Power for two hours. The station battery and the four (4) RDS batteries will be considered operable if they are essentially fully charged and the battery charger is in service. Additionally, prior to the startup following the 1977 refueling outage, successful completion of service testing and performance discharge testing within each operating cycle and each sixty months, respectively, will further establish battery reliability.
149a Proposed TSB1286-0289A-NLO4
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