H2 Control, SBOGs

Question 1

Which of the following events has to occur to necessitate starting a SBOG?

A. A loss of class batteries (MVDC) has occurred, and both diesel generators in an individual PVNGS Unit have failed to load on to the Class 4.16kV buses.
B. Three diesel generators, one in each PVNGS Unit, have failed to load on to their respective Class 4.16kV buses.
C. A loss of off-site power has occurred, and both diesel generators in an individual PVNGS Unit have failed to load on to the Class 4.16kV buses.
D. A reactor trip has occurred, and both diesel generators in an individual PVNGS Unit have failed to load on to the Class 4.16kV buses.

Answer 1

C. A loss of off-site power has occurred, and both diesel generators in an individual PVNGS Unit have failed to load on to the Class 4.16kV buses.

Question 2

The efficiency of a typical gas turbine is approximately ____%.

A. 10
B. 20
C. 33
D. 50

Answer 2

B. 20

Question 3

A mixture of fuel and compressed air burns in the ____ section of a gas turbine.

A. Igniter
B. Combustor
C. Diffusor
D. Turbine

Answer 3

B. Combustor

Question 4

What are the three main components of the Station Blackout Generator Package?

A. Turbine Engine, Reduction Gear Assembly, Generator
B. Turbine Engine, Diesel Engine, Generator
C. Turbine Engine, Reduction Gear Assembly, Diesel Engine
D. Turbine Compressor, Reduction Gear Assembly, Generator

Answer 4

A. Turbine Engine, Reduction Gear Assembly, Generator

Question 5

The Hydrogen Control System is designed to be manually activated prior to hydrogen concentration reaching ____ by volume, and is capable of being placed in position and connected to required services within ____ hours of following a LOCA and be operational within 100 hours.

A. 1%, 24
B. 3.5%, 72
C. 4.0%, 72
D. 3.5%, 24

Answer 5

B. 3.5%, 72

Question 6

The motive force for flow through the Hydrogen Purge Unit is:

A. Instrument Air
B. Hydrogen Purge Exhaust AFU
C. Service Air
D. Containment Purge Supply AHU

Answer 6

C. Service Air

Question 7

Given the following conditions:
Unit 1 is operating at 40% power.
The Power Access Purge Unit has been started in preparation of a containment entry.
Ru-37 (One of the PAPA radiation monitors) fails HIGH.
Which of the following describes the ESFAS actuations that result, if any?

A. CPIAS with a cross trip to CREFAS.
B. CPIAS only.
C. CPIAS with a cross trip to FBEVAS
D. No actuation until RU-38 reaches its HIGH setpoint.

Answer 7

A. CPIAS with a cross trip to CREFAS.