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Jim Turner LCLS Accelerator Readiness Review December 2, 2008 1 LCLS Safety Systems Acceptance J. Turner, for the LCLS and SLAC.

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Presentation on theme: "Jim Turner LCLS Accelerator Readiness Review December 2, 2008 1 LCLS Safety Systems Acceptance J. Turner, for the LCLS and SLAC."— Presentation transcript:

1 Jim Turner LCLS Accelerator Readiness Review December 2, LCLS Safety Systems Acceptance J. Turner, for the LCLS and SLAC Teams LCLS Undulator Complex Accelerator Readiness Review December 02, 2008 LCLS

2 Jim Turner LCLS Accelerator Readiness Review December 2, Contents List of safety officials Engineering process integrating safety A variety of engineering process safety examples Radiation Physics (RP) Analysis example Handshake between LCLS and RP How RP does business Example Brief Summary

3 Jim Turner LCLS Accelerator Readiness Review December 2, Safety Officers and Committee Chairs Radiation Safety Officer – Sayed Rokni Fire Safety Officer – Ralph Kerwin Electrical Safety Officer – Paul Bellomo Earthquake Safety – Scott Debarger Hazardous Experimental Equipment – Keith Jobe Hoisting and Rigging – Kenneth Fouts Environmental Safety – Helen Nuckolls ALARA (as low as reasonably achievable) – Dieter Walz Laser Safety Officer – Mike Woods Non-ionizing Radiation Safety – Jim Sebek

4 Jim Turner LCLS Accelerator Readiness Review December 2, Beamline Engineering Processes Peer Review Safety Assessment by Committee or Safety Officer Engineering Requirements Documents Installation and Acceptance

5 Jim Turner LCLS Accelerator Readiness Review December 2, Examples Follow Main Electron Dump ALARA Engineering Main Electron Dump ALARA RP Simulation Magnet Stand Hoisting and Rigging Magnet Stand Earthquake Safety Magnet and Power Supply Electrical Safety

6 Jim Turner LCLS Accelerator Readiness Review December 2, Main Electron Dump - Example This particular review for the Electron beam dumpline followed many meetings with and simulations by Radiation Physics.

7 Jim Turner LCLS Accelerator Readiness Review December 2, Electron Dump Designed for Rapid repair For ALARA, the main electron beam dump normally buried in steel is removable on rollers through the front wall of the dump pit. Details in ESD at:

8 Jim Turner LCLS Accelerator Readiness Review December 2, Intervention for Main Dump Repair Dose estimates for repair or replacement of the main electron beam dump are in RP at https://slacspace.slac.stanford.edu/sites/esh/rp/rpg_group/RP%20Notes/RP pdf Simulated beam went left to right for 30 days at 14 GeV, 2 kW, then wait 24 hours and pull front plug to prepare to pull dump. Red spot is the dump down in the dump pit. X-ray line is above the whole picture.

9 Jim Turner LCLS Accelerator Readiness Review December 2, Hoisting and Rigging Safety In this engineering design peer review, Hoisting and Rigging chairperson had already approved the design.

10 Jim Turner LCLS Accelerator Readiness Review December 2, Earthquake Safety In this engineering design review, the Earthquake Committee Chairperson was a reviewer.

11 Jim Turner LCLS Accelerator Readiness Review December 2, Magnet and Support

12 Jim Turner LCLS Accelerator Readiness Review December 2, Electrical Safety Walkthrough Electrical Safety Officer, Paul Bellomo had a safety walkthrough performing oversight. See LCLS Undulator Complex Commissioning Preparedness Document Appendix B

13 Jim Turner LCLS Accelerator Readiness Review December 2, Electrical Safety procedures are prepared before circuits are completed. One page of a lockout procedure is shown on the right. These procedures are necessary for maintenance. Electrical Safety Procedures ELPs are in the SLAC Drawing Database at: Prefix: SR Series: 384

14 Jim Turner LCLS Accelerator Readiness Review December 2, RP Analysis 0.3 mrem/hr 0.03 mrem/hr 5 W loss 0.5 mrem/hr From Alberto Fasso et. al. in RP R1. This RP note determined the orientation and shape of this access maze as well as other access mazes, ventilation duct, and cableways.

15 Jim Turner LCLS Accelerator Readiness Review December 2, Beam Losses and Mitigation PMD is about Electron Beam Loss in LCLS, and contains tables of ‘design to’ specs, average beam power, and maximum credible beam power. RP Note RP-08-07, lists all radiation shielding based on information from the PMD.

16 Jim Turner LCLS Accelerator Readiness Review December 2, How Radiation Physics Does Business Design – 47 RP Notes for LCLS RP Reviews – Peer, RSC, External (Mokhov, Roesler, Ban) Implementation – RP Field Verification and >50 RP Memos documenting inspection Authorization – Beam Authorization Sheet (BAS) Operation – Commissioning radiation studies, configuration control, etc. Performance Review – DOE reports, etc.

17 Jim Turner LCLS Accelerator Readiness Review December 2, Verification of Implementation

18 Jim Turner LCLS Accelerator Readiness Review December 2, Radiation Physics Documentation

19 Jim Turner LCLS Accelerator Readiness Review December 2, Simulated Prompt Radiation Beam Abort Dump without and with lateral shielding Radiation Physics did iterative simulations working with beamline engineers. (Note RP by M. Santana Leitner and J. Vollaire )

20 Jim Turner LCLS Accelerator Readiness Review December 2, Radiation Physics (Santana, Vollaire, Mao, and Fasso) working with beamline engineers, specify radiation suppression components of 120 Hertz beam abort dump shielding Model for Simulated Beam Abort Dump

21 Jim Turner LCLS Accelerator Readiness Review December 2, Model and Final assembly of Beam Abort Dump RP Model above, Actual installation right.

22 Jim Turner LCLS Accelerator Readiness Review December 2, Walkthroughs, Memos and Signatures Radiation Physics – RSO Sayed Rokni (Walkthroughs by Stan Mao and Mario Santana) Fire Marshall – FSO Ralph Kerwin Electrical – ESO Paul Bellomo Earthquake – Scott Debarger Hazardous Experimental Equipment –Keith Jobe Hoisting and Rigging – Ken Fouts Environmental Safety – Helen Nuckolls ALARA – Dieter Walz

23 Jim Turner LCLS Accelerator Readiness Review December 2, Summary Engineering process integrates safety LCLS and RP work together to mitigate hazards RP business practice and documentation Safety officers’ walkthrough to verify installation


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