Interlock Defeat

System(s) Affected:
Safety

Interlock to be Defeated:
Air Monitor 16 warn level changed to 21 kCPM

Implementation:	Number:
Date: 2024-10-22 Time: 00:22:00	2024-499
Implemented By: Ryan Anderson
In Consultation With:

Status: Removed

Estimated Duration:
9 hours

Reason for Defeat:
Allow RIB OPS to complete overnight run, RSO will follow up in the morning

Permission to change air monitor limit granted by RSO, as put in the e-log at 22:33.

Number of Yellow Tags:
2

Location of Defeat Tag(s):
DCR Defeat Board

On back of rack A in DCR

How Was Defeat Implemented?
Where is Defeat Located?:
Console in back of rack A

Describe Alternate Protection:
Warn is still present and trip is intact. DCR is closely monitoring this air monitor and air monitor 18

Fault Reports:

Work Permits:

Disables:

Interlock Defeat

Removal:	Number:
Date: 2024-10-23 Time: 05:25:00	2024-499
Removed by: Ryan Anderson

Status: Removed

Interlock Verification Method:
Warn level restored to normal using computer in back of rack A. Air monitor warn limit number displays in white on vertical page.

Number of Tags Removed:
2

Comments: