Incore Detectors

Question 1

The reactor has ____ fixed incore assembly locations. The rhodium detectors are placed axially along the movable detector calibration tube at ____ of active core height.

A. 50; 10; 30; 50, 70; and 90%
B. 50; 25, 50, and 75%
C. 50; 20, 40, 60, 80, and 100%
D. 61; 10, 30, 50, 70, and 90%

Answer 1

D. 61; 10, 30, 30, 50, 70, and 90%

Question 2

Rhodium 104 has a half life of ___ seconds and emits ____.

A. 12; beta and gamma radiation
B. 42; beta radiation ONLY
C. 42; beta and gamma radiation
D. 32; beta and neutron radiation

Answer 2

C. 42; beta and gamma radiation

Question 3

The CETs are located in the bullet nose assembly of the incore instrument (ICI) assembly. The process range of the thermocouples:

A. 100F to 1800F
B. 200F to 2100F
C. 1800F to 2300F
D. 200F to 2300F

Answer 3

D. 200F to 2300F

Question 4

According to TLCO 3.3.102 An OPERABLE incore location consists of a fixed detector string with a minimum of ___ OPERABLE rhodium detectors.

A. 2
B. 3
C. 4
D. 5

Answer 4

B. 3

Question 5

According to LCO 3.3.10, for post accident monitoring, how many valid core exit thermocouples are required per quadrant?

A. 2
B. 3
C. 4
D. 5

Answer 5

C. 4