Term
CRD & Hyd
Describe the purpose of hydraulics. |
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Definition
-Provide high press water from condensate or CST for rod movement.
-Charge accumulators.
-Supply cooling water to drives.
-Supply water to recirc pump seals and reference leg backfill.
-Emergency supplies RPV w/feedwater or alt boron inject. |
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Term
CRD & Hyd
Describe the CRD pump power supplies and cooling. |
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Definition
-4kV from 15 and 16 bus.
-Thrust bearing and gearbox oil cooled by RBCCW. |
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Term
CRD & Hyd
Describe the CRD pump alarms. |
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Definition
-12" Hg vacuum suction.
-4kV breaker open.
-Over current and high vibes 0.6g.
-Speed increasing gear for motor from 1770 to 4210 rpm. |
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Term
CRD & Hyd
Describe the suction filters in CRD system. |
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Definition
-Suction (2)
-5 micron.
-High d/p at 10"Hg psid.
-Bypass filters at 8"Hg vacuum (no alarm).
-12"Hg vacuum pump trip with 2 sec time delay immediate alarm. |
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Term
CRD & Hyd
Describe the discharge filters in CRD. |
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Definition
-(2) 20 micron,
-High d/p alarm at 20psid. |
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Term
CRD & Hyd
Describe the flow path/rate for the min flow line. |
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Definition
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Term
CRD & Hyd
Describe the flow path/rate for the bypass line. |
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Definition
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Term
CRD & Hyd
Describe the charging water header pressure and flow path. |
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Definition
| 1500psi CRD water to HCU accumulators. |
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Term
CRD & Hyd
Describe the function of the drive water header. |
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Definition
| -Provide motive force for normal insertion/withdrawal of rods using d/p of 265psid over Rx pressure. |
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Term
CRD & Hyd
Describe the function of the cooling water header. |
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Definition
| Provides cooling water flow path from CRD pumps to HCUs usual d/p is 15-33 psid over Rx pressure. |
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Term
CRD & Hyd
Describe the flow control valve power supply. |
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Definition
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Term
CRD & Hyd
Describe the ARI solenoid valve power supplies. |
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Definition
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Term
CRD & Hyd
Describe the solenoid pilot valves power supplies. |
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Definition
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Term
CRD & Hyd
Describe the effects on the flow transmitter on a loss of Y-30. |
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Definition
-Loss of Y-30 gives false low.
-Causes flow control valves to go full open. |
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Term
CRD & Hyd
Descripe the rated oil pump flow. |
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Definition
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Term
CRD & Hyd
Describe the 7 risers for HCU. |
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Definition
-Drive insert.
-Cooling water.
-Exhaust water.
-SCRAM discharge.
-Drive water.
-Charging water.
-Drive withdraw. |
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Term
CRD & Hyd
Describe the air header pressure to ensure faster SCRAM. |
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Definition
| 70psig ensures faster venting on scram. |
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Term
CRD & Hyd
Describe the low pressure setpoint for accumulators. |
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Definition
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Term
CRD & Hyd
Describe the high water setpoint for the accumulators. |
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Definition
-40ML.
-Red light = alarm.
-Push button: if light goes off = high water. |
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Term
CRD & Hyd
Describe the speed control valves settings. |
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Definition
| Speed adjusted to 3"/sec or 48secs +/- 9.6secs for full travel. |
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Term
CRD & Hyd
Describe the SCRAM volume and setpoint for rod block. |
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Definition
-1 gallon per rod.
-54 gallons in discharge volume get SCRAM.
-38 gallon in discharge volume get rod block.
-28 gallon in discharge volume get alarm. |
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Term
CRD & Hyd
Describe the charging header pressure setpoint. |
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Definition
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Term
CRD & Hyd
Describe the actions upon a 2nd accumulator low pressure alarm. |
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Definition
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Term
CRD & Hyd
Describe the CRD pump hi vibration setpint. |
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Definition
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Term
CRD & Hyd
Describe the CRD discharge water filter hi d/p setpoint. |
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Definition
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Term
CRD & Hyd
Describe the CRD pump suction press lo setpoint. |
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Definition
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Term
CRD & Hyd
Describe the charging water lo press setpoint. |
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Definition
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Term
CRD & Hyd
Describe the SCRAM pilot header hi/lo press setpoints. |
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Definition
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Term
CRD & Hyd
Describe when the disch vol tank not drained alarm actuates. |
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Definition
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Term
CRD & Hyd
Describe when the CRD hi temp alarm actuates. |
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Definition
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Term
CRD & Hyd
Describe the CRD suction filter high d/p setpoint. |
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Definition
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Term
CRD & Hyd
Describe the instrument air header low pressure setpoint. |
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Definition
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