Interlock Defeat / Device Disable
Management System v1.5 (Driver)

Accelerator Complex:



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Implementation Removal

Interlock Defeat


Safety

BSM 63 working level raised from 30 to 35
Implementation: Number:
2023-08-25 12:15:00 2023-483

Eric Chapman

Removed
Estimated Duration:
6 weeks
Thorium targets at installed at IPF. Temporary approval granted to irradiate thorium until Sept 30, 2023.

2
DCR defeats and rack A.
Rack A RMS computer, working level of BSM 63 increased from 30 to 35.

Device will still alarm as intended, just at slightly higher value. Approval granted by RSO via email, this has been done in the past (see defeat 2022-350).





Eric Chapman: 2023-08-25 12:23:29.346983
Thank you for the detailed content of your email. The information you provided made it easier to understand the issue and its context to overall operations.

"Please let this email serve as documented agreement from RPG to adjust the levels for beam-spill monitor 63 (BSM-63) from 30 to 35. This increase will address the frequency of warning alarms without compromising ALRA or overall safety of the operation. " -email from Rock Neveau Aug 25 2023



Rock Neveau (he/him)

Chief Safety Officer
Ryan Anderson: 2023-08-30 15:56:15.052221
Working limit has been raised to 40, as per the email from the TRIUMF chief safety officer below:

Please let this email serve as documented agreement from RPG to adjust the working trip levels for beam-spill monitor 63 (BSM-63) from 35% to 40%.

After consultation with Accelerator Operations staff and the RPG Group Leader it was concluded that rather than adjusting the setting to 38%, an increase to 40% is warranted to minimize the potential for additional warning alarms while still maintaining worker safety during thorium irradiations at the IPF. This increase will minimize the potential for additional warning alarms without compromising ALARA or overall safety of the operation.



Please let me know if there is anything else Operations would like to formally document our decision to increase BSM#63 settings to 40%.



Rock Neveau (he/him)

Chief Safety Officer