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Take 5 for Safety

Highlights of Proposed Revisions to Accelerator Safety Order (80% Draft) Collider-Accelerator Department 5-11-2010. Take 5 for Safety. Issues Facing the Accelerator Community. What is an accelerator, accelerator facility and accelerator operation? (these are exempt from nuclear rules)

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Take 5 for Safety

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  1. Highlights of Proposed Revisions to Accelerator Safety Order (80% Draft) Collider-Accelerator Department 5-11-2010 Take 5 for Safety

  2. Issues Facing the Accelerator Community • What is an accelerator, accelerator facility and accelerator operation? (these are exempt from nuclear rules) • Post operations, do you retain the accelerator classification? • Clarify criticality with regard to accelerators • Which accelerators require DOE headquarters approval as opposed to field element approval? • Clarify equivalence/exemption

  3. Proposed Definitions for Revised Order • Accelerator Operations - those activities of an accelerator and any associated accelerator facilities that are bounded by the Safety Assessment Document. Accelerator operations (and post operations) include the production, use, storage and handling of radioactive material. • Accelerator – a device employing electrostatic or electromagnetic fields to impart kinetic energy to molecular, atomic or sub-atomic particles and is capable of creating a radiological area as defined in Title 10, Code of Federal Regulations, Part 835 entitled Occupational Radiation Protection (10 CFR 835).

  4. Proposed Definitions for Revised Order • Accelerator Facility– the accelerator and associated plant and equipment utilizing, or supporting the production of, accelerated particle beams to which access is controlled to protect the safety and health of persons. It includes injectors, targets, beam dumps, detectors, experimental halls, non-contiguous support facilities, experimental enclosures and experimental apparatus utilizing the accelerator, etc, regardless of where that apparatus may have been designed, fabricated, or constructed – in sum all systems, components and activities that are bounded by the hazard analysis and controls. • Criticality – the condition in which a nuclear chain reaction becomes self-sustaining without the use of external beams of ionizing radiation from an accelerator.

  5. Proposed Changes to Approvals • DOE Headquarters retains approval authority for accelerator facilities that exceed 1 rem equivalent dose and/or EPRG-2 at the site boundary in an accident • Otherwise, the field element DOE Manager approves: • The Accelerator Safety Envelope • Start of commissioning activities after ensuring that an appropriate Accelerator Readiness Review has been conducted • Start of routine operations • Re-start after a shutdown for safety reasons • Specific exemptions to specific requirements in the Order • Draft will be circulated in a few weeks • Final version anticipated for spring 2011 after DOE/NNSA review board issues and contractor comments are resolved

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