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Flashcards in ADS Deck (19)
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1
Q

What provides power to the

ADS/SRV Solenoids?

A

Div 1 DC - A ADS and C Solenoids

Div 2 DC - B ADS Solenoids

2
Q

What provides the N2 for the ADS Solenoids?

A

They have 7 dedicated 10 cubic foot accumulator tanks that are supplied by tanks 4 and 5 which are supplied from the high pressure N2 system.

3
Q

What provides the N2 for the C Solenoids?

A

They are each provided from a 2 cubic foot accumulator tank that is supplied by GSN-TK2 via low pressure nitrogen from the liquid N2 tanks

4
Q

What is required to automatically open the ADS valves?

A

L1 signal
L3 confirmatory signal
ECCS Pump Running (CSL-145#, RHR-125#)
105 second timer

5
Q

What is required to open the ADS Valves with the manual push buttons?

A

A low pressure ECCS Pump must be running

6
Q

All conditions are met for the ADS Valves to open.

After the ADS valves go open you depress the reset push button. What happens?

A

The ADS valves will close and reopen after the 105 second timer is done.

7
Q

All conditions are met for the ADS Valves to open.

After the ADS valves go open you inhibit ADS with the keylock switch. What happens?

A

Nothing, the ADS valves have a seal in, you must depress the reset push button to close the valves, after which the valves remain closed.

8
Q

You do not have any ECCS pumps available to run, how would you open the ADS Valves?

A

Use the Keylocks in the back on P628/631 to open the valves.

9
Q

you have a stuck open SRV(Non ADS) and are required to blowdown, what do you do?

A

Using the keylocks on the P628/631, open the SAME 6 ADS valves on each panel.

10
Q

At what N2 pressure is it possible that the SRV may open without an open signal?

A

SRVs may lift if N2 pressure is above 200#

11
Q

You are manually controlling pressure with SRVs. What caution exists when performing this action?

A

Should cycle SRVs in a sequence that evenly distributes heat in the Suppression Pool

12
Q

A rupture in the N2 line supplying the C solenoids cause low pressure nitrogen pressure in GSN-TK2 to drop to 75psig. What action is required?

A

IAW ARP 851210, a manual SCRAM is required if GSN-TK2 pressure is less than or equal to 79 psig

13
Q

1 SRV is equivalent to how many bypass valves?

A

Approx 1 Bypass Valve

14
Q

1 SRV is equivalent to what percent power steam flow?

A

Approx 5% power

15
Q

What are the relief valve setpoints?

A
2 @ 1103
4 @ 1113
4 @ 1123
4 @ 1133
4 @ 1143
16
Q

What are the Safety valve setpoints?

A
2 @ 1165
4 @ 1175
4 @ 1185
4 @ 1195
4 @ 1205
17
Q

What is the motive force to open a relief valve?

A

N2 opens a SRV in Relief Mode

18
Q

What is the motive force to open a safety valve?

A

RPV Pressure opens a SRV in Safety Mode

19
Q

What provides position indication on P601, P628/631

A

P601 - acoustic monitors

P628/631 - Solenoid energized