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Readiness Verification After a Maintenance Outage

This article discusses the steps involved in verifying readiness after a maintenance outage in the journal of the American Chemical Society. Topics covered include authorization workflow, startup checklists, accelerator management, safety sign-offs, and instrument management self-assessments. The text provides insights on ensuring operational and safety systems are fully prepared for resuming activities, with examples of potential risks and necessary precautions.

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Readiness Verification After a Maintenance Outage

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  1. Readiness Verification After a Maintenance Outage Geoff Milanovich, SNS

  2. How do we get from this?

  3. To this?

  4. To this?

  5. Ok, this. Journal of the American Chemical Society2019141 (19), 7990-7999

  6. Authorization Workflow Startup Checklists OPM 6-F.1.1 OPM 7-T.22 < 25 kW on Target Full power on target Management Self Assessment OPM 6-F.1.2 Neutrons on Sample Instrument MSA OPM 6-F.2.1 Shutter Open Instrument Checklist OPM 7-U.*.1

  7. Accelerator Startup Checklists • Organized by beamstop from ion source to target • Filled out by Ops • Previous beamstop checklist must be completed before next can be fully completed • Exception process exists, requires management approval • Beam on target limited to 25 kW

  8. Accelerator Startup Checklists OPM 6.F-1.1

  9. Target Startup Checklist OPM 7-T.22

  10. Accelerator Management Self Assessment • Management sets operational goal for the run • Beam Power, Availability • Group leaders present work accomplished, deferred maintenance, risks to operational schedule to a local committee • Sign off that technical systems are ready (separate from operations checklist) • Sign off that safety systems are ready • Upon approval, beam power >> 25 kW

  11. Example slide:Front End RF Systems (Excluding RFQ) • Replaced RG-218 output cable with rigid coaxial transmission line • Connects the isolation transformer to the ion source • Also used in the BTF Ion Source • Performed routine PM and testing on QEI amplifier • Performed routine PM on MEBT amplifiers • Operational Risks • Medium Risks • Plasma outages cause high reflected power on 2 MHz system which can cause equipment damage and downtime • High reflected alarm requires prompt operational intervention • Working on software control to set power to 0 W • No deferred maintenance 1-5/8” EIA rigid copper coaxial transmission line Damage caused by high reflected power

  12. MSA Safety Sign-Offs • ES&H • Credited Engineering Controls • Radiation Safety • ASE and OE • ARR action items • Corrective Actions • fire protection, quality, etc.

  13. Instrument Management Self Assessment • Scientific Associate for each beamline presents work, risks • Sign off that systems are ready (choppers, detectors, etc) • Sign off for instrument hall safety • Instrument Operations Manager signs off final approval

  14. Example instrument MSA slide

  15. Instrument Hall Safety Signoffs • Radiation Safety • PPS • New Installations • Electrical Safety

  16. Instrument Startup Checklists

  17. Neutrons Making the World a Better Place

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