COLSS

Question 1

A COLSS CMC alarm is received. The Group Display for COLSS CMC is displayed. Point ID NKTMFLOW, RCS flowrate value, indicates an ‘N’. Determine which one of the following calculations is affected?

A. DNBR POL
B. ASI
C. AZ Tilt
D. LPD POL

Answer 1

Answer: A

Question 2

Unit 1 is operating at rated power. A Regulating Group 5 CEA drops to the bottom. The Rod Bottom Light on the mimic illuminates, and the crew takes actions per 40AO-9ZZ11, CEA Malfunctions. The COLSS Power Operating Limit (POL) is -99.0. Based on these conditions, COLSS…

A. is DEFINITELY inoperable due to the dropped rod, requiring 72ST-9RX03 (COLSS Inoperability) to be performed.
B. is performing exactly the way it was designed, and is fully operable.
C. is DEFINITELY inoperable and power should immediately be reduced at least 20%.
D. MAY be inoperable, and requires a functional determination (77OP-9RJ04) to be performed.

Answer 2

Answer: D