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RCS Flashcards

1
Q

RCS Loop Legs temps

A
  • Hot leg (Reactor to S/G) 604F
  • Intermediate (S/G to RCP)
  • Cold leg (RCP to reactor)547F
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2
Q

Penetrations on RCS Loop 1

only on Loop 1

A
  • Normal Letdown (Cold leg)

- Alternate charging (Hot leg)

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3
Q

Penetrations on RCS Loop2

only on Loop 2

A
  • Excess Letdown (inter. leg)
  • RHR Pump suction (hot leg)
  • Normal charging (cold leg)
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4
Q

Penetrations on RCS Loop 3

Only on loop 3

A

-PZR surge Line (hot leg)

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5
Q

Penetrations common to all RCS Loops

A
  • Drain to RCDT (Inter. leg)

- SI/RHR injection (Cold leg)

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6
Q

Penetrations only on Loop 2 and 3

A
  • PZR spray to PCV-455B (Cold leg)
  • SI injection (Hot leg)
  • Primary sampling (hot leg)
  • RVLIS upper range tap (hot leg)
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7
Q

RCP flow rate?

A

-88gpm per RCP

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8
Q

RCP Power supplies

A
  • A RCP - 4KV1
  • B RCP - 4KV4
  • C RCP - 4KV 2
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9
Q

RCP motor amps

A
  • 600-650 amps on hot run

- 750 amps on cold run (start)

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10
Q

Bearing Oil Lift Pump power supplies

A
  • A & C - MCC-2

- B - MCC- 1

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11
Q

Bearing Oil lift pump purpose and infromation

A
  • Sends oil to upper and lower shoes of thrust bearing simultaneously.
  • Lubricates the thrust bearings
  • RCP must not be started unless oil lift pump has been running for 2 mins.
  • Must have lift pump running and 600psig to start a RCP.
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12
Q

RCP motor space heaters

A
  • Prevents condensation when RCP is stopped.
  • 3 knife switches located in CV.
  • On-off switch in Rod Control Room (Powered from MCC-8)
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13
Q

RCP flywheel

A
  • Adds inertia to increase RCP coastdown time
  • Reduces consequences of a LOCA (DNB concerns)
  • Also houses an anti-reverse rotation device. (no check valves in the system)
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14
Q

RCP seals

gpm per seal to where?

A
  • 8gpm from Charging pumps
  • 5gpm down past Thermal barrier into the RCS
  • 3gpm up to 1st seal (15psig back pressure from VCT)
  • 3gph past 2nd seal (stand pipe with 7ft of water)
  • 100cchr past 3rd seal to containment sump
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15
Q

Shutdown seal

A
  • Between number 1 seal and number 2 seal

- Upon loss of cooling, the shutdown seal will actuate preventing a loss of coolant accident

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16
Q

CVCS seal injection
how many Gpm normally?
min?
Max?

A
  • Normal seal injection flow per pump should be 8-13gpm
  • Min, 6gpm (tech spec)
  • Max, 20gpm
17
Q

RCS temps

A
  • Hot leg 604F
  • Cold leg 547F
  • Tave is 575F
18
Q

RCP seal flow back to VCT

gpm?

A
  • 3gpm back to VCT per pump.

- 9gpm all together

Primary Side (7 decks)

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