Interlock Defeat

System(s) Affected:
Safety

Interlock to be Defeated:
Air monitor 6 warn level increased

Implementation:	Number:
Date: 2024-11-07 Time: 18:43:00	2024-508
Implemented By: Ryan Anderson
In Consultation With:

Status: Removed

Estimated Duration:
1 days

Reason for Defeat:
For BL1U production. Defeat is in place until default warn level set to match.

Number of Yellow Tags:
2

Location of Defeat Tag(s):
Back of Rack A in DCR

DCR Defeat Board

How Was Defeat Implemented?
Where is Defeat Located?:
Air monitor level set to 45 (45000 cpm) using computer in back of rack A.

Describe Alternate Protection:
UCN BSMs plotted in DCR, watching during kicking. Approved by RSO by email Nov 7, 2024.

Fault Reports:

Work Permits:

Disables:

Interlock Defeat

Removal:	Number:
Date: 2024-11-12 Time: 00:30:00	2024-508
Removed by: Eric Chapman

Status: Removed

Interlock Verification Method:
Air Monitor #6 set back to default of 10kCPM. UCN currently not in operation.

Number of Tags Removed:
2

Comments:

Kevin Lucow: 2024-11-12 23:17:52.941702
Default value permanently changed by Safety Group under C2024-11-12-3.
Eric Chapman: 2024-11-12 00:42:51.010905
Re-implement as required up to maximum specified by RSO. At 10uA, AM#6 typically seen steady at 8kCPM.