Interlock Defeat /
Device Disable
Management System
v1.5
(Driver)
Accelerator Complex:
Driver
RIB
TR13
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Implementation
Removal
Interlock Defeat
System(s) Affected:
Vacuum
Interlock to be Defeated:
EHGMS:SV01, EHCDFPV01, EHCD:FPV04, EHCD:FPV06, EINJ:FPVCD, EACA:FPVCD interlocks bypassed
Implementation:
Number:
Date:
2023-09-20
Time:
09:45:00
2023-518
Implemented By:
Brandon Humphries
In Consultation With:
Status:
Removed
Estimated Duration:
1 weeks
Reason for Defeat:
Cryogenics group is scrubbing the helium system in preparation for cool down.
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:
A2023-09-18-1
Disables:
Interlock Defeat
Removal:
Number:
Date:
2023-10-12
Time:
09:00:00
2023-518
Removed by:
Brandon Humphries
Status:
Removed
Interlock Verification Method:
Valves all went into a Fail-safe State as their interlocks were no longer satisfied. Confirmed EHGMS:SV01 couldn't be opened (also now interlocked closed).
Number of Tags Removed:
2
Comments:
Brandon Humphries
David Bandiera
Elena Bylinskaia
Jason Wait
Robert Scheepmaker
Eric Chapman
Ryan Lovelidge
Riley Schick-Martin
Dale Nagra
Travis Kurucz
Chris Sooley
Kevin Lucow
Jas Uppal
Kathleen Genge
Gauhar Hayat
Frank Hosta
Ryan Anderson
