Interlock Defeat

System(s) Affected:
Safety

Interlock to be Defeated:
BSM #40 Trip limit raised

Implementation:	Number:
Date: 2024-11-29 Time: 17:52:00	2024-526
Implemented By: Travis Kurucz
In Consultation With:

Status: Removed

Estimated Duration:
18 hours

Reason for Defeat:
BSM reading high due to configuration of experiment. Defeat level increased from 25 mSv/hr to 28 mSv/hr. (Warn limit increased from 12.5 mSv/hr to 14 mSv/hr).

Number of Yellow Tags:
2

Location of Defeat Tag(s):
Defeat bulletin board.

On the back of Rack 'A'

How Was Defeat Implemented?
Where is Defeat Located?:
RMS PC in DCR Rear Rack A

Describe Alternate Protection:
BSM still trips at a slightly higher value.

Fault Reports:

Work Permits:

Disables:

Interlock Defeat

Removal:	Number:
Date: 2024-11-30 Time: 05:12:00	2024-526
Removed by: Sierra Dean

Status: Removed

Interlock Verification Method:
Returned trip limit to 25 mSv/hr on RMS PC behind rack A

Number of Tags Removed:
2

Comments:

Sierra Dean: 2024-11-30 05:15:56.256495
Returned trip limit to original value after 1B user run was completed.
Travis Kurucz: 2024-11-29 17:56:07.120966
Defeat implemented under advisement from Roxana via email.