Interlock Defeat

System(s) Affected:
Vacuum

Interlock to be Defeated:
EHMC:SV01, EHRPC:SV01 and EHGMS:SV01 interlocks bypassed

Implementation:	Number:
Date: 2024-06-24 Time: 09:30:00	2024-333
Implemented By: Brandon Humphries
In Consultation With:

Status: Removed

Estimated Duration:
2 days

Reason for Defeat:
Cryogenics group is re-commissioning the Cryogenics system after ACSPLC03 replacement (WP#A2024-05-28-3).

Number of Yellow Tags:
2

Location of Defeat Tag(s):
1-ESS safety panel

1-Cork board in the back of the DCR.

How Was Defeat Implemented?
Where is Defeat Located?:
Interlocks were bypassed through EPICS using the Bypass/Force utility.

Describe Alternate Protection:
Procedure is performed by experts while the system is warm, they will monitor any relevant signals.

Fault Reports:

Work Permits:
A2024-05-31-1, A2024-06-24-1

Disables:

Removal:	Number:
Date: 2024-07-02 Time: 13:33:00	2024-333
Removed by: Brandon Humphries

Status: Removed

Interlock Verification Method:
Bypasses are no longer required as per Cryogenics experts. Interlock indications disappeared in EPICS.

Number of Tags Removed:
2

Comments: