REMOTE SHUTDOWN

Question 1

What is the Tech Spec requirement for “B” RSD indications?

Answer 1

Must have all “B” RSD indications OPERABLE. Restore in 30 days or be in HSBY in 6 hrs.

Question 2

What is the basis for Tech Spec 3.5.7 regarding “B” RSD indications?

Answer 2

Provides the ability to place the unit in Safe Hot Shutdown.

Question 3

What are the zones under App R consideration for Remote Shutdown?

Answer 3

Main Control Room, Relay Room, ESAS Room.

Question 4

Where are the RSD panels and transfer switches located?

Answer 4

• RSD Panels: CB 322’ near RCP Power Monitors.
• “A” Transfer Switch: ESAS Room.
• “B” Transfer Switch: 1S 480V Room.
• “C” Transfer Switch: 322’ near RSD.

Question 5

What happens to MU-P-1C and IC-P-1B during RSD transfer?

Answer 5

MU-P-1C controller in STOP on RSD panel B will TRIP if running prior to transfer. IC-P-1B in START position on Aux B panel will START.

Question 6

What are the EF-V-30A/C and EF-V-B/D positions when transfer switches are used?

Answer 6

EF-V-30A/C are at 0%, and EF-V-B/D are at 25%.

Question 7

What is a High Impedance Fault?

Answer 7

Insulation breakdown without a dead short, where current still flows, causing MCC/bus overload.

Question 8

What is unique about the “C” RSD Transfer Switch?

Answer 8

It only has a switch for MU-P-1B.

Question 9

How are RSD relays actuated?

Answer 9

RSD is ENERGIZE to actuate relays.

Question 10

What manual actions are required to start EF-P-1 and EF-P-2A/B during RSD?

Answer 10

• EF-P-1: Manually OPEN MS-V-13A/B.
• EF-P-2A/B: Manually start at 1D/1E 4kV Breakers.

Question 11

What happens to MUPs during RSD transfer?

Answer 11

RSD transfer of MUPs bypasses ES logic, so the pump will not auto start on ES.