RCMS - RPIS

Question 1

What is the purpose of RMCS

Answer 1

To control CRD Movement by providing signals to the solenoid operated directional control valves on the HCUs.
Prohibits control rod movement during unsafe conditions
Operates CRD Stab Valves

Question 2

For RMCS, On the Full Core Display, what is the color scheme?

Answer 2

White - Indicates which rod is selected
Red - Indicates Rod Drift
Amber - indicates accumulator trouble - low N2 or Hi water
Red Scram Light - Both Inlet and Outlet scram valves open
LPRM HI Red - >100w/cm^2
LPRM Lo Blue - <4w/cm^2

Question 3

What are the two signals that generate an AMBER Full Core Display light?

Answer 3

Accumulator Trouble - Lo N2 at 1000psig, Hi Water at 1.5oz leak past seal

Question 4

How many pushbuttons are on the Rod Select Matrix?

Answer 4

177

Question 5

What De-selects a Rod Select Matrix Light?

Answer 5

Selecting a new rod will deselect the original and select the new

Question 6

What limitations exist for selecting a new rod or shutting off the power on the Rod Select Matrix?

Answer 6

There can be no rod motion

Question 7

What powers the Rod Select Matrix?

Answer 7

ESS

Question 8

What is the purpose of the RMCS Drive/Settle Bus?

Answer 8

Used to insert and drive out rods - powered by IB

Question 9

Which Valve is used for Settling Rods and when is the Drive/Settle Bus Bypassed?

Answer 9

The CRD 120 vlv is always used to settle rods

Drive/Settle Bus bypassed when using the “Emergency In” function