Radiation Safety – Health Physics Neutron Spectroscopy Summer School Training Outline

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Radiation Safety – Health Physics Neutron Spectroscopy Summer School Training Outline - Radiation, Ionization, & Radioactivity - Radiation Protection & Safety - Radiation Dose - Questions ?? Electromagnetic Radiation Definitions uRadiation: Energy (electromagnetic waves or particulates) uIonization: The removal of electrons from an atom uIonizing Radiation: Particles or rays with sufficient energy to remove electrons from atoms Ionization electron knocked out The ionized atom causes changes which MAY damage cells, which MAY cause health effects Incoming Gamma Ray Ionizing Radiation Atoms & Radioactivity Most atoms are stable, but some may emit excess energy (radiation) and are called radioactive. Emitted Gamma Ray Radiation Sources | | | | | | | | | | | | ConfinementConfinement | GuideGuide HallHall | Radiation Exposure Reducing External Exposure Time Distance Distance – Inverse Square Law Shielding Internal Exposure Campfire Analogy Radiation Dose Units Dose Units are known as the rad and rem rad = the amount of energy absorbed in tissue rem = relates the amount of ionization in air (R) or the amount of absorbed energy (rad) to the degree of biological damage Average Background Dose US Average ~ 360 mrem/yr Denver, CO ~ 700 mrem/yr Brazil (beaches) ~ 5,000 mrem/yr Health Physics Labels/Signs ~100,000 mrem/hr >5 mrem/hr >100 mrem/hr (localized dose) (whole body dose) (whole body dose) Radiation Dosimetry General Public Dose Limit = 100 mrem/yr Occupational Dose Limit = 5,000 mrem/yr Radiation Dose and Risk | 50,000 millirem Radiation Risk Comparisons Activity* Cause of Death Smoking 1 cigarette Cancer, Heart Disease Travel 50 miles by car Fatal Accident Drinking 30 cans of diet soda Cancer (saccharin) Eating 100 grilled steaks Cancer (benzopyrene) Chest X-ray (10 mrem) Cancer *Performing this activity increases your chance of dying by one in a million (1 x 10 -6 ) Loss of Life Expectancy Ionizing Radiation - Overview CanCan notnot seesee it,it, feelfeel it,it, oror smellsmell itit - we must rely on training and equipment to protect ourselves RelativelyRelatively simplesimple toto detectdetect andand measuremeasure - unlike chemical and biological hazards - we can quickly assess and take action BiologicalBiological effectseffects havehave beenbeen intenselyintensely studiedstudied forfor 5050 yearsyears.

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Committee Reports 2005 Midyear Meeting
2004-2005 MIDYEAR REPORT Academic Education Committee Health Physics Society Mark Rudin - Chair Report Prepared by Mark J. Rudin, Ph.D. January 11, 2005 Abstract The Academic Education Committee (AEC) has been and continues to be very active in a number of areas. Accomplishments/activities during the first half of the 2004-2005 time period included: 1. Administration of Health Physics Society (HPS) Fellowship and Travel Grant Awards 2. Maintenance of Student Branch Programs 3. A fifth health physics program participated in the Applied Science Accreditation Commission (ASAC) of the American Board for Engineering and Technology, Inc. (ABET) accreditation process. Page 220 Report Outline: I. Recommendations for Action II. Subcommittee Assignments for 2004-2005 III. Progress Reports 2003-2004 HPS Fellow Selections 2003-2004 Student Travel Grants Student Branch Program Health Physics Education Reference Book Health Physics Program Directors Organization Accreditation Sub-Committee Revision of the Careers in Health Physics brochure I. Recommendations for Action 1. The Committee anxiously awaits the approval of its Rules/Operating Procedures. Once the rules are approved, the AEC will be able to appoint individuals from the AEC Subcommittee on Accreditation to the ANS and the American Academy of Health Physics. John Poston and Rich Brey have agreed to serve as the liasions for the ANS and Academy, respectively. 2. Chuck Roessler has graciously served as the HPS Commissioner on the Applied Sciences Accreditation Commission (ASAC) of ABET for two terms (2003-04 and 2004-05). Note that ASAC is the ABET commission under which accreditation of Health Physics Academic Programs is conducted. Commissioner terms are for one year with members eligible for reappointment for up to five terms.
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