SECONDARY COOLING SYSTEM

Question 1

What happens if SR-P-1B and SR-P-1C are both operating and an ES signal occurs?

Answer 1

SR-P-1C trips, and SR-P-1A will auto start.

Question 2

Can the Nuke River supply the Secondary River?

Answer 2

Yes, but only when the reactor is shutdown.

Question 3

Can the Secondary River supply the Nuke River?

Answer 3

Yes, but Tech Spec 3.0.1 applies.

Question 4

What happens to all SRPs during an ES signal?

Answer 4

All SRPs trip and lockout (27/86).

Question 5

What is the normal position of SR-V-1A/B/C valves?

Answer 5

They are normally maintained OPEN at all times for pump starts.

Question 6

What buses supply power to SC-P-1A/B/C?

Answer 6

1C, 1J, and 1N buses.

Question 7

What is the operational requirement for coolers versus pumps in Secondary Cooling?

Answer 7

There must always be one more cooler than pump in service (pumps 50%, coolers 33%).

Question 8

What is required for 3/4 Secondary Cooling operations?

Answer 8

Shift Manager approval.

Question 9

What provides backup cooling to IA-P-1A/B when all 52 breaker contacts are open?

Answer 9

Fire Service (FS).

Question 10

What does SC-V-23 maintain across SSCCW?

Answer 10

A differential pressure of 25#.

Question 11

What systems are associated with SC-V-24, 25, 26, and 143?

Answer 11

Hydrogen (Auto), Turbine Lube Oil (failed OPEN), EHC (normally CLOSED), and Service Building Chiller.