1 / 13

Accelerator Safety Overview and Tasks - ESS

Learn about the expertise and responsibilities of the Safety Work Package Leader at European Spallation Source. Tasks include radiation safety, shielding design, and more. Get insights on ongoing projects and future goals for safety improvement.

gladis
Download Presentation

Accelerator Safety Overview and Tasks - ESS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Accelerator/Safety Lali Tchelidze Safetyworkpackageleader www.europeanspallationsource.se April 22, 2015

  2. Overview • Safety work package – expertise and responsibilities • Working scope • Current and future tasks • Summary

  3. Safety work package • Resources: • 2 full time employees • 1 part-time employee • 2 part-time employees (time limited) • A senior consultant (planned - time limited) • Expertise: • Radiation safety/Monte-Carlo codes • Two parallel accelerator models in MARS and FLUKA, additionally the front-end model in MCNPX • General safety (including cryogenic safety, fire safety, electrical safety, etc.) • Role: advise and propose solutions to ACCSYS project management and ES&H • Meetings: bi-weekly

  4. Working scope • Examples: • Re-evaluation of the linac tunnel HVAC system. • Composition of the actual clay material used in the construction. • Strategy for waste handling. • Centralized zoning approach. • Cryogenic safety: plan for documenting, reviewing and approving cryogenic systems. • Participation in upcoming design reviews and audits • Participation in preparation of ESS safety policies

  5. Some tasks, 2015

  6. Dealing with tasks • Task assignment and follow-up is done in RADSF* JIRA (also in various boards). (* Username: essreviewer, pass: AR22015) • Clear purpose, specific goals, specific dates. • Final technical notes reviewed and approved in CHESS.

  7. Accelerator Safety and Radioprotection Home Link: Accelerator Safety and Radioprotection * * Username: essreviewer Pass: AR22015

  8. Accelerator shielding • Approved ESS linac prompt radiation shield design criteria: • ESS-0008309 by L. Tchelidze • ESS-0008351 by L. Tchelidze • “Baseline” shielding design (both analytical and Monte-Carlo analysis): • ESS-0007143 by L. Tchelidze • ESS-0011759 by L. Tchelidze • ESS-0013575 by E. Pitcher • Procedures: ESS Procedure for designing shielding for safety (as from March 18, 2015) • ESS-0019931 by G. Muhrer • Pictures demonstrating changes

  9. Geometry status • Main model – in MARS (L. Tchelidze, M. Jarosz) • Parallel model – in FLUKA (L. Esposito, L. Lari) • Warm linac model – in MCNPX (R. Bevilacqua) L. Esposito R. Bevilacqua M. Jarosz

  10. Other safety issues • Assessment of the tunnel ventilation system • Confinement classification (ISO-17873) based on DAC • Minimum depression level • Radiological requirements • Fire-control and ODH control requirements • Fire safety • Fire loads assessment in the tunnel – no sprinklers required • Similar work ongoing for klystron gallery • Smoke extraction • Cryogenic safety (ESHAC recommendation!) • ODH calculations model to assess risks • Safety documentation to be submitted to ES&H • List of mitigation measures • Working group in place

  11. Summary-1 • A safety group in accelerator division to support/answer safety questions & issues related to the accelerator • We have expertise to deal with both general safety and radiation safety issues • We have expertise to run Monte-Carlo simulations as needed • Serves as an advisory group to ACCSYS project management and ES&H • In charge to: • Address shielding/radio-protection issues • Address general safety issues • Support ES&H division in licensing process • Answer ESHAC recommendations • Be involved in PDR, CDR, WP-s annual audit • Support development of ESS safety manual

  12. Summary-2 • Done: • First iteration for assessment of the change requests for shielding • Front-end building (partially) • HEBT loading bay and stubs (partially) • Emergency exit in A2T area • Smoke evacuation design from prompt radiation point of view • Cryogenic vent line • Filling material • A2T cable penetration • On-going: • Updating MARS and FLUKA models • Detailed MC simulations to verify layout for radiation shielding • MC simulations for activation studies • ODH policy and strategy • Ventilation system • Smoke extraction system

  13. Thank you!

More Related