RQ-C-4823 (Core Cooling and Inventory CSFST)

Question 1

What condition(s) must be satisfied to exit FR-C-1 when re-establishing ECCS flow is unsucessful?

Answer 1

RVLIS NR above 46% or ANY of the 5 highest CETC less than 757 deg F

Question 2

What is the strategy behind depressurizing intact SGs to 160# in FR-C.1

Answer 2

Inject accumulators

Question 3

How is accumulator nitrogen kept out of the RCS during FR-C.1

Answer 3

SG depressurization is stopped at 160# and 150# RCS pressure

Question 4

When are RCPs in loops with SG level started in FR-C.1

Answer 4

When the five highest CETCs are greater than 1200 deg F

Question 5

How many RCPs are started in FR-C.1 when CETC are greater than 1200 deg F

Answer 5

Any RCP with a SG