201.38 Class 1E Vital 120 VAC

Question 1

• 201.38 Class 1E Vital 120 VAC*
• • *

Function of the Class 1E Vital 120 VAC System

Answer 1

Supply reliable power for vital instrumentation and control loads both for safe shutdown of the reactor, and for normal power generation.

Question 2

• 201.38 Class 1E Vital 120 VAC*
• • *

Typical loads from Class 1E Vital 120 VAC System

Answer 2

NIS control and instrument power

ESF Actuation Trains

Rad Monitoring

Containment H₂ monitoring panel

SSPS Logic Cabinets

NSSS process racks (7300)

QDPS

RVWL

Question 3

• 201.38 Class 1E Vital 120 VAC*
• • *

Channel Color Codes and Corresponding Trains

Answer 3

Channel I - Red, A

Channel II - White, D

Channel III - Blue, B

Channel IV - Yellow, C