CORE FLOOD (213)

Question 1

When must CF-V-1A/B be OPEN during RCS heat-up?

Answer 1

When RCS pressure is >650# and <700#.

Question 2

When must CF-V-1A/B be CLOSED during RCS cooldown?

Answer 2

When RCS pressure is <700# and >650#.

Question 3

What is the maximum allowable pressure for Core Flood Tanks (CFTs) if RCS temperature is <313F and RC-RV-2 (PORV) is INOPERABLE?

Answer 3

CFTs must not exceed 590#.

Question 4

What are the requirements for Core Flood Tanks to meet ECCS acceptance criteria?

Answer 4

Both Core Flood Tanks must be OPERABLE, along with 1 Train HPI and 1 Train LPI.

Question 5

What are the operational parameters for Core Flood Tanks?

Answer 5

11.13-12.01ft water, 600±25# N2, and >2270ppm boron.

Question 6

How long do you have to restore boron concentration in Core Flood Tanks if it is out of specification?

Answer 6

Restore boron concentration within 72 hours.

Question 7

What is the Tech Spec action for Core Flood Tank volume or pressure being out of specification?

Answer 7

Enter 1-hour 3.0.1.

Question 8

What ensures ECCS criteria are met if the CF injection line breaks?

Answer 8

The Core Flood nozzle venture limits reactor vessel flow OUT.

Question 9

What is the power source for CF-V-1s, and what is required at 100% power?

Answer 9

CF-V-1s are powered by 1C ESV, and breakers must be OPEN with EST applied at 100% power, or else 3.0.1 applies.

Question 10

What happens to CF-V-2A/B on 4# RB and RTI?

Answer 10

They CLOSE and are powered by 1A ESV MCC.

Question 11

What happens to CF-V-20A/B on 4# ES and RTI?

Answer 11

They CLOSE and are powered by 1F DC.

Question 12

What is the status of CF-V-3A/B during normal operations?

Answer 12

They are CLOSED with breakers OPEN except while venting or else 3.0.1 applies.

Question 13

What is the power source for CF-V-19A/B, and what is their function?

Answer 13

Powered by 1M DC, they CLOSE on 4# RB and RTI, with the inside containment valve being a check valve only.

Question 14

What is the requirement for CF-V-3A/B during normal operations?

Answer 14

They must be LOCKED OPEN with an EST and are powered from “A” RW MCC.

Question 15

What is the normal fill supply for Core Flood Tanks?

Answer 15

The 4% boric acid tank, with MU supplies used during outages (blanked at power).

Question 16

When is a Core Flood Tank considered OPERABLE with one indication OOS?

Answer 16

If either 1 level indication or 1 pressure indication is OPERABLE (redundant).