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RadNet Air Monitoring Program in California

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Learn about California's RadNet Air Monitoring system, its history, components, and operators' roles in monitoring radioactive materials in the air.

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RadNet Air Monitoring Program in California

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Presentation Transcript

  1. US EPARadNet Program California Air Resources Board Monitoring & Laboratory Division Special Purpose Monitoring

  2. Program History • 1950’s: Federal government begins monitoring radioactive materials due to nuclear weapons testing • 1970: Monitoring for rads is consolidated under the US EPA • 1973: US EPA creates a continuous monitoring system called “Environmental Radiation Air Monitoring System” (ERAMS) • 2005: ERAMS is renamed “RadNet”

  3. What Is RadNet? • US EPA’s environmental radiation monitoring program • Categories monitored: • Drinking water • Precipitation • Pasteurized milk • Air

  4. Air Monitoring • Sept. 11th brought renewed emphasis to monitoring airborne rads. • US EPA installed a nationwide network of 124 “near real-time monitors”

  5. California RadNet Air Monitoring • California’s RadNet sites: • Anaheim • Bakersfield • Eureka • Fresno • Los Angeles • Riverside • Sacramento (Began late 2008) • San Diego • San Francisco • San Jose • San Bernardino (11th site as of early 2011)

  6. The RadNet Monitor • Stand alone monitoring system developed by General Atomics • Acquires, stores and electronically transmits data to the National Air Radiation & Environmental Lab (NAREL)

  7. RadNet Components (Met. & Comm.) Satellite antenna Temp. sensor Cellular antenna

  8. RadNet Components (Sampling) Beta & gamma detectors Filter

  9. RadNet Components (Data Mgmt.) Local Processing Unit (i.e. CPU)

  10. Operator’s Role • Change and field test filters 2x / Week • Complete and submit “Air Particulate Sample Report” to NAREL • Occasionally assist US EPA with trouble shooting • Annually calibrate the RadNet w/ US EPA’s assistance

  11. Perform background count w/ the geiger counter Remove and replace the exposed filter Perform count on exposed filter w/ the geiger counter Filter Change & Field Test

  12. Sample Report Completion • After completion, mail form & filter to NAREL

  13. Interesting Links • Japanese Nuclear Emergency Webpage http://www.epa.gov/japan2011/index.html • USEPA Envirofacts – RadNet Data http://iaspub.epa.gov/enviro/erams_query_v2.simple_query • RadNet Operator Webpage http://www.epa.gov/narel/radnet/operators/

  14. Thanks for watching. Contact: Whitney Okabayashi (916) 324-3997

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