Interlock Defeat

System(s) Affected:
Safety

Interlock to be Defeated:
Air Monitor #6: BL1U/UCN - warn limit raised to 45kCPM

Implementation:	Number:
Date: 2024-10-16 Time: 08:45:00	2024-490
Implemented By: Eric Chapman
In Consultation With:

Status: Removed

Estimated Duration:
2 days

Reason for Defeat:
As approved by RSO (via Oct 9, 2024 email) for UCN operation up to 40uA.

Number of Yellow Tags:
2

Location of Defeat Tag(s):
CSS Rack A, DCR defeats board.

How Was Defeat Implemented?
Where is Defeat Located?:
CSS Air monitor #6 warning limit raised from 10kCPM to 45kCPM for duration of BL1U commissioning.

Describe Alternate Protection:
Warn will occur at higher level.

Fault Reports:

Work Permits:

Disables:

Interlock Defeat

Removal:	Number:
Date: 2024-10-17 Time: 01:45:00	2024-490
Removed by: Travis Kurucz

Status: Removed

Interlock Verification Method:
Air monitor 6 returned to default warn of 10 kCPM.

Number of Tags Removed:
2

Comments:

Eric Chapman: 2024-10-16 08:54:39.025787
Approved during operation of BL1U, until Jan 2025