1. James C. Liu 1 and Lawrence S. Walker 2 1. SLAC National Accelerator Laboratory, CA, USA 2. Brookhaven National Laboratory, NY, USA 1. Introduction ANSI Standard N43.1 (2011): "Radiation Safety for the Design and Operation of Particle Accelerators" ANSI: American National Standard Institute New ANSI N43.1 published in November 2011 N43.1 was developed to address the hazards and controls for accelerators in current technical, operational and regulatory environment. Goal: provide a consistent and sound radiation protection framework for accelerator community. 2. Major Elements 1.Covers most fixed, non-medical accelerators and encompassing almost all particles types and energies. 2.Covers all phases of accelerator facility from design to decommissioning (life-cycle approach). 3.Addresses both technical and managerial aspects of radiation safety program. 4.Sets both requirements and recommends for the protection of workers, public and environment. 5.Takes a graded approach for hazard control that is commensurate with risk. 6.Addresses engineered and/or interlocked safety systems that provide prompt radiation protection and safe accelerator operations. Chapter 1 — Purpose, Scope and Introduction Chapter 2 — Acronyms, Abbreviations, and Definitions Chapter 3 — Radiation Safety Program 3.1General 3.2Organization and Administration 3.4Design and Implementation of Safety Controls and Monitoring 3.5Accelerator Operations 3.6Operational Radiation Safety 3.7Training and Qualification 3.8Program Review and Performance Evaluation 3.9Quality Assurance, Quality Control, and Configuration Control 3.10 Document and Record Management Chapter 4 — Radiation Safety System (RSS) 4.1General 4.2Features of the Radiation Safety System (RSS) 4.3Requirements and Guidance 4.4Radiation Not Related To Accelerator Beam 4.5Induced Radioactivity Chapter 5 — Access Control System (ACS) 5.1Purposes 5.2Graded Approach 5.3System Features 5.4Beam Inhibiting Devices (BIDs) 5.5Interlocks 5.6Review 5.7Certification and Checks Chapter 6 — Radiation Control System (RCS) 6.1General 6.2Performance Requirements 6.3Passive Systems: Shielding and Fences 6.4Active Systems 6.5Administrative Controls Chapter 7 — Accelerator Operations 7.1General 7.2Readiness Review 7.3Operating Practices 7.4Testing, Routine Maintenance and Unscheduled Repairs 7.5Interlock Bypasses and Deviations from Procedures 7.6Emergency Response Chapter 8 — Operational Radiation Safety 8.1General 8.2Area Classification, Worker Classification and Access Control 8.3Personnel Dosimetry 8.4Area Monitoring 8.5Radiation Surveys 8.6Radiological Work Control 8.7Control of Induced Radioactivity 8.8Instrumentation 8.9Management of Radioactive Material, Sources and Waste 8.10 Radiological Environmental Protection 8.11 Facility Cleanup and Decommissioning Chapter 9 — Training 9.1General 9.2Procedures and Records 9.3Training Requirements 9.4Radiation Safety Training Program 9.5Training Topics 9.6Trainer Qualifications Appendices Appendix A — Development of Safety Assessment Document (SAD) Appendix B — Interlocked-Type Access Control Systems Appendix C — Decommissioning Program Appendix D — Measurements of Radiation and Radioactivity Normative Appendix E — Safety Standards for Commercially Available and/or Production-Type Accelerators Contact: james@slac.stanford.edujames@slac.stanford.edu Supported by US DOE Contract Number DE-AC02- 76SF00515