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:
Ion sources and injection BL
Interlock to be Defeated:
Cryo 165 gate valve temperature interlock
Implementation:
Number:
Date:
2023-11-17
Time:
10:45:00
2023-608
Implemented By:
Eric Chapman
In Consultation With:
Status:
Removed
Estimated Duration:
1 weeks
Reason for Defeat:
Poor ISIS vacuum trips machine on ISIS beam loss, pumping required to maintain beam delivery. Cryo 165 cold head above trip threshold auto closing gate valve.
Number of Yellow Tags:
1
Location of Defeat Tag(s):
no tags
How Was Defeat Implemented?
Where is Defeat Located?:
VIB EPICS window for IB:GV165CYP. "IB:CCYP165 temp ok" interlock bypassed in EPICs
Describe Alternate Protection:
Manually close gate valve if vacuum degrades too far in ISIS beamline due to cryopump out gassing. Strips running on CYCCON09 next to supervisor station.
Fault Reports:
Work Permits:
Disables:
Interlock Defeat
Removal:
Number:
Date:
2023-11-18
Time:
07:30:00
2023-608
Removed by:
Eric Chapman
Status:
Removed
Interlock Verification Method:
ISIS cryo 165 temp now ok. Bypass cleared, cryo 165 operating normally.
Number of Tags Removed:
1
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
