72ST-9RX03

Question 1

What is the purpose of 72ST-9RX03?

Answer 1

Verify TS limits for DNBR, LHR, AZ TILT and ASI aren’t exceeded when COLSS is OOS >20% RTP

Question 2

How often do we monitor the LIMITS for LHR, AZ TILT, DNBR and ASI when COLSS is OOS (Performance Intervals)?

Answer 2

DNBR and LHR - Every 2 hours w/ additional monitoring required at 15 minute intervals under certain conditions

ASI - Every 2 Hours

AZ TILT - Every 12 Hours

Question 3

Per 72ST-9RX03, who performs the ST’s and who runs the CECOR program?

Answer 3

Operations performs the ST’s

RX Engineering runs CECOR program

Question 4

AZ TILT can’t be calculated if ANY ___ Instrument is INOPERABLE

Answer 4

Excore Safety Channel

Question 5

If power can’t be maintained within a range of plus or minus ___ RTP, Adverse Trend monitoring can’t be performed.

Answer 5

1%

Question 6

During a slipped or dropped CEA event, CPC values of DNBR and LHR are ___ and aren’t to be used to surveil DNBR and LHR to meet LCO 3.2.1 and 3.2.4 requirements.

Answer 6

Non-Conservative

Question 7

During DNBR, LPD and ASI Evaluations, failing to begin adverse trending within 15 minutes of loss of COLSS results in what?

Answer 7

Tech Spec Non-Compliance

Question 8

When monitoring DNBR/LPD values for Adverse Trend, what do PURPLE back lit points indicate?

Answer 8

Data is considered SUSPECT

Question 9

AZ TILT is determined to be More Accurate and is Preferred if CMC is available by this method:

Answer 9

CECOR Snapshot

Question 10

CPC calculated values of DNBR and LHR are impacted by changing what value?

Answer 10

CPC AZ TILT Allowance (also impacts 15 minute adverse trend data)