Interlock Defeat

System(s) Affected:
Vacuum

Interlock to be Defeated:
ELNS:SV01, EOXY:SV01 and EOXY:SV02

Implementation:	Number:
Date: 2024-05-28 Time: 08:45:00	2024-274
Implemented By: Brandon Humphries
In Consultation With:

Status: Removed

Estimated Duration:
1 days

Reason for Defeat:
ODMS calibrations will be performed for EOXY:OM2, EOXY:OM4 and EOXY:OM6, which will cause ELNS:SV01, EOXY:SV01 and EOXY:SV02 to close. Valves bypassed to prevent them from closing.

Number of Yellow Tags:
1

Location of Defeat Tag(s):
1- ERSS panel blue box

1- Cork board in back of DCR

How Was Defeat Implemented?
Where is Defeat Located?:
Through bypass/force function in EPICS.

Describe Alternate Protection:
Personnel in area will be notified and signs posted (as per WP). OMs will still alarm if there is an actual cryogenics leak. Valves can be manually closed.

Fault Reports:

Work Permits:
A2024-05-28-1

Disables:

Interlock Defeat

Removal:	Number:
Date: 2024-05-28 Time: 10:30:00	2024-274
Removed by: Brandon Humphries

Status: Removed

Interlock Verification Method:
EPICS "interlocks bypassed" message cleared after removal through EPICS bypass/force utility.

Number of Tags Removed:
2

Comments: