CIS Safety

LOTO Safety Pause and Restart Process

• media:SLAC Electrical Shock Accident Investigation Report - Final.pdf
• Video of SLAC electrical event discussion, May 19, 2023
• Process applies to LOTO in OSP/LOSP/TOSP work control documents
  • Slides from 6/13/23 group meeting media:230612_CIS_LOTO.pptx
  • media:HEC Restart Process 052323 draft final.pdf
  • media:HEC Restart Checklist 052323 draft final.pdf

SF6 Systems Operated as a Pressure Vessel

• CEBAF SF6 HVPS pressure vessel - ASME 100 psihttps://jlabdoc.jlab.org/docushare/dsweb/View/Collection-38417

• UITF SF6 HVPS pressure vessel - ASME 100 psi(no tank drawings): https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-25492

  (complete, w/ tank drawings): https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-38867

• DILO SF6 Transfer and Recovery Cart (2019 unit)(original) https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-49572

  Alteration #1 - SF6 10 psi R28 resistor tank: https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-49570

  Alteration #2 - 500 kV SF6 10 psi HV chamber: https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-49571

• DILO SF6 Transfer and Recovery Cart (2013 unit)(original): https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-19051

  (copy of 19051 but with two alterations): https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-22091

  Alteration #1 - SF6 10 psi R28 resistor tank: https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-49570

  Alteration #2 - 500 kV SF6 10 psi HV chamber: https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-49571

SF6 Systems NOT Operated as a Pressure Vessel

• GTS SF6 HVPS Pressure vessel - ASME 15 psi(original): https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-2455

  (copy of 2455): https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-2729

  GTS Description of HVPS SF6 vessel and gas flow Media:GTS-SF6 Automatic Gas Transfer System by Kevin Jordan 2007 uopdated by Carlos 2021.pptx

  • LERF Description of HVPS SF6 vessel and gas flow Media:LERF-FEL SF6 transfer system overview documented September 2021.pptx

CEBAF Specific OSPs, TOSPs and LOSPs

These procedures are managed via document control with links to individual procedures as shown below, but these documents can also be found using the search tool at this link: https://mis.jlab.org/mis/apps/mis_forms/search_operational_safety_procedure_forms.cfm

• CEBAF Injector Laser Cleanroom (ACC-18-76974-LOSP), valid through 5/26/2021: https://mis.jlab.org/mis/apps/mis_forms/operational_safety_procedure_form.cfm?entry_id=76974
• CEBAF Injector Laser System (ACC-19-94369-LOSP), valid through 10/31/2022: https://mis.jlab.org/mis/apps/mis_forms/operational_safety_procedure_form.cfm?entry_id=94369
• CEBAF Battery Bias Box, Draft OSP media:DraftOSP_Battery_bias_box_maintenance.docx and Task Hazard Analysis media:draftTHA_battery_bias_box_maintenance.docx

• DC Power OSP De-energizing 10 Amp Trim Rack with application of Lock, Tag and Try (LT&T) at CEBAF, LERF, UITF, GTS (ENG-20-103293-OSP) : https://mis.jlab.org/mis/apps/mis_forms/operational_safety_procedure_form.cfm?entry_id=103293
• Wien filter high voltage measurement using voltage divider box (ACC-20-108912-OSP), valid through 11/19/2023: Media:operational_safety_procedure_form_108912.pdf

LERF Specific

• LERF Gun High Voltage Conditioning OSP, valid through 11/10/2021 Media:LERF gun OSP HV conditioning_80619_signed-off.pdf
• LERF Gun photocathode re-cesiation (QE replenishing) DRAFT procedure Media:LERF Gun photocathode re-cesiation OSP.docx

GTS Specific

• GTS operations OSP, valid through11/23/2025:File:GTS OSP 2022 fully signed off.pdf
• GTS HVPS OSP including LOTO procedures valid through11/4/2023:File:GTS HVPS OSP Nov 2022 Complex LOTO signed off.pdf

Official documents managed via document-control for CEBAF

• CEBAF accelerator MEDCON 5 loading limits (IH1000-04g), circulated S. Hoey 9/29/20: media:loading limits_CEBAF ih1000004g_v4.docx
• IH Exposure Assessment: Injector Tunnel, Sulfur hexafluoride (SF6) (IH Project # 18OT137) Prepared by: Jennifer Williams, CIH media:18OT137.pdf
• CEBAF Injector Power Supply SF6 Tank & 350 kV Receptacle (PS-ACC-17-001) https://jlabdoc.jlab.org/docushare/dsweb/View/Collection-38417
• CEBAF Industrial Hygiene Assessment for SF6 exposure evaluated June 2018 by Jennifer Williams : requested link to official assessment
• TL1137 MicroMott Polarimeter Operation Approved July 2020 Expires Aug 2023 https://misportal.jlab.org/mis/apps/mis_forms/operational_safety_procedure_form.cfm?entry_id=103187

Other documents NOT managed via document-control

• SF6 Inventory log and calculation sheets are located at:O:\inj_group\SF6 Gas Management and Inventory
• Task Hazard Analysis for NEG sputter coating media:THA_NEGSputtering.docx
• NFPA posting for chambers containing NEG materials from Jennifer Williams media:NEG component_ nfpa.docx