air sampling for radioactive materials€¦ · monday, november 15 osc readiness training air...
TRANSCRIPT
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Air Sampling for Radioactive Materials
OSC Readiness Training Phoenix, Arizona
Monday, November 15, 2004Presented by:
Jim Mitchell, OSC Region 5
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Monday, November 15 OSC Readiness Training
Radionuclide Air Sampling Objectives
� Identify Radioactive Isotopes
� Assessment of Emergency Worker Exposure
� Assessment of General Public Exposure
� Assessment of Particulate Resuspension from Removal work
� Respiratory Protection
� Internal Dose Monitoring
� Determine Particle Size
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Monday, November 15 OSC Readiness Training
Airborne Contaminants
� Gasses/Vapors� Particulates
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Monday, November 15 OSC Readiness Training
Gas Sampling Techniques
� Adsorption� Absorption� Grab Sample
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Monday, November 15 OSC Readiness Training
Particle Sampling Techniques
� Sedimentation
� Electrostatic Precipitation
� Impaction
� Filtration
� Thermal Precipitation
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Monday, November 15 OSC Readiness Training
Air Sampling System
� Vacuum pump
� Collecting device
� Metering Device
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Monday, November 15 OSC Readiness Training
Particle Size Distribution
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Monday, November 15 OSC Readiness Training
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Monday, November 15 OSC Readiness Training
Filter Media
� Glass Fiber� Paper� Membrane
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Monday, November 15 OSC Readiness Training
Counting Filter Media
� Gamma spectroscopy� Alpha spectroscopy
� Plastic scintillators� Proportional counters� Solid state detectors
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Monday, November 15 OSC Readiness Training
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Monday, November 15 OSC Readiness Training
Common Problems with Air Sampling
� Representativeness� Sampling time� Natural Airborne Radioactivity
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Monday, November 15 OSC Readiness Training
( )( )( )( )( )( )( )622.2
129.371.2
EVolSAFFFEEttttR
LLDCCFDS
B
SSB
++
=
Equation for Determining Sample Time
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Monday, November 15 OSC Readiness Training
Uranium Series
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Monday, November 15 OSC Readiness Training
Thorium Series
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Monday, November 15 OSC Readiness Training
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Monday, November 15 OSC Readiness Training
Air Sampling - Emergency Response Phase
� Identify Radionuclide Source Term
� Estimate Emergency Worker Exposure
� Estimate Public Exposure
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Monday, November 15 OSC Readiness Training
Air Sampling - Intermediate Phase through Long Term Phase
� Establish Worker Exposure Assessment Program� Evaluate the Need for Respiratory Protection � Evaluate the Need for Internal Dose
Assessment Program� Establish Public Exposure Assessment
Program (NRC, DOE, EPA criteria)
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Monday, November 15 OSC Readiness Training
Worker Exposure
� Identify ALI (annual limit on intake)� Identify the DAC (derived air
concentration) for the radionuclides of interest)
� Develop Air Sampling Plan Radon/Thoron daughter concentrations
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Monday, November 15 OSC Readiness Training
Public Exposure� Identify Public Exposure Limit� Develop Air Sampling Plan
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Monday, November 15 OSC Readiness Training
EPA Air Sampling Equipment Assets Available to the OSC
� RADeCO Air Samplers
� F&J High Volume Air Sampler 4 inch head
� F& J 2 inch head
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Monday, November 15 OSC Readiness Training
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Monday, November 15 OSC Readiness Training
EPA Air Sampling Equipment Assets Available to the OSC
� Deployable (40) 2 inch and 4 inch heads + Dose Monitors
� Genitron Remote Dose Monitors ORIA (20) ERT (40)
� Thermo Anderson High Volume (50) Regions and ERT
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Monday, November 15 OSC Readiness Training
Questions?