Notes
Slide Show
Outline
1
 
2
 
3
Introduction
  • Group Activity


4
Unit 3 Objectives
  • By the end of this unit, you will:


    • Understand the threat characteristics of radiological WMDs.


    • Identify types of harm that radiological WMDs may cause First Responders.


    • Describe the uses and limitations of PPE at radiological emergencies.


    • List First Responder protective actions at radiological WMD incidents.
5
Team Activity SM 3-5
  • Identify Responder Issues


    • From the video, determine the following:


      • Team 3 - Threat Characteristics


      • Team 4 - Types of Harm


      • Team 1 - PPE Considerations


      • Team 2 - First Responder Protective Actions
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Unit 3 Video
7
Team 3
  • Threat Characteristics


    • Possible internal emitters


    • Possible penetrating radiation


    • Toxicity, corrosivity, etc.
8
Team 4
9
Team 1
  • Personal Protective Equipment (PPE)


    • Structural Firefighter Protective Clothing (SFPC)


    • Self-Contained Breathing Apparatus (SCBA)
10
Team 2
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12
Penetrating Power
13
Radiation Threat Characteristics 
SM 3-7 and 3-9
14
Radiation Threat Characteristics  SM 3-9
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Radiation Sources - Natural
16
Radiation Sources - Manmade
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Types of Harm - Illnesses / Injury
  • Acute exposure
    • 100 rem, short time
    • Acute radiation syndrome


  • Reproductive effects


  • Fetal Exposure


  • Skin Burns
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Types of Harm - Illnesses / Injury
  • Skin Burns – Chernobyl Fire Fighters
19
Stages of Acute Radiation Syndrome
20
Emergency Response Guidebook Information
  • According to the ERG - how can you protect against external radiation exposure?
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22
Types of Harm – Long Term Effects
  • Cancer


  • Genetic effects
23
PPE & Radiation Activity SM 3-15
  • Which types of radiation present the greatest risk as internal emitters?  Explain.
  • ___Alpha   ___ Beta   ___ Gamma   ___ None


  • Check the types of radiation that can be effectively blocked with SFPC.
  • ___Alpha   ___ Beta   ___ Gamma   ___ None


  • 3. How can we limit our exposure to gamma radiation?
24
PPE & Radiation
  • Which piece of PPE provides the most important protection when a radioactive source may be present?  Why?


  • ___  Helmet    ___ Coat / Pants  ___  SCBA  ___ Boots   ___ Gloves



  • Decontamination is rarely necessary after working at an incident where a radiological material was present.  Explain.
  • ___True   ___ False


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First Responder Protective Actions
  • Establish command


  • Isolate / Assess


  • Evaluate rescue


  • Decontaminate


  • Call for technical assistance
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First Responder Protective Actions 
SM 3-17
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Isolating Radiation Hazards
  • Low level radiation:
    • 330 feet (downwind) for large spills;
    • 1000 feet (in all directions) for fires (see Guide 161)


  • Low to moderate level radiation:
    • 330 feet (downwind) for large spills;
    • 1000 feet (in all directions) for fires (see Guide 162)


  • Low to high level radiation:
    • 330 feet (downwind) for large spills;
    • 1000 feet (in all directions) for fires (see Guide 163)


  • How will you know the level of radiation involved in an emergency response situation?
    • Probably will not know
28
Sample Radiation Detectors
  • Canberra ‘Mini-Radiac 500’


  • Rate meter and dosimeter


  • Weight- 9.5 oz


  • Small enough to easily be worn


  • Will be placed on all emergency apparatus



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Features

  • Personal radiation monitor designed for the needs of first responders
  • Measures and displays radiation dose rate and total dose
  • Presettable two level audio and visual alarms (vibrating alarm optional)
  • Designed to operate in extremes of temperature, shock, humidity, dust, immersion and radiation
  • Large, easy-to-read backlit LCD display
  • Intuitive six button user interface
  • Operable/readable by personnel in fire fighting or HAZMAT protective gear
  • Uses standard AAA batteries
  • Low life cycle costs due to calibration stability and automatic self calibration
  • Stay Time display shows time remaining to dose alarm
  • Source finder mode
30
First Responder Protective Actions
  • Risk vs. Benefit


  • Clues to Survivability


  • Limiting Exposure


  • Decontamination
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First Responder Protective Actions
  • As
  • Low
  • As
  • Reasonably
  • Achievable


32
Time, Distance, and Shielding
33
First Responder Protective Actions
  • Time


    • Limit the time you spend near the
    • source


    • The shorter the time in a radiation
    • field, the less the radiation exposure


    • Work quickly and efficiently


    • Rotating team approach can be used to keep individual radiation exposure to a minimum
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First Responder Protective Actions
  • Distance
    • Increase the distance between
    • yourself and the source


    • The farther a person is from the source of radiation, the lower the dose


    • Doubling the distance will quarter the dose of radiation (Inverse Square Law)


    • Do not touch radioactive materials, use shovels, brooms etc., to move materials
36
"Protection Factor"
  • Protection Factor
37
First Responder Protective Actions
  • Shielding
    • Although not always practical in
    • emergency situations, shielding
    • offered by barriers can reduce
    • radiation exposure


    • Alpha cannot penetrate unbroken skin or paper


    • Beta is stopped by aluminum foil or clothing


    • Gamma rays require dense materials such as lead, earth, concrete, or steel
38
First Responder Protective Actions
  • Technical Assistance?
    • Haz Mat
    • CHEMTREC
    • Industry
    • Nuclear medicine department
    • Laboratories
    • Veterinary facilities
    • Universities
39
First Responder Protective Actions
  • Additional technical assistance
    • Nuclear Regulatory Commission


    • Department of Energy


    • Public Health Service


    • EPA


    • FBI*
  • Review case study - First Responder Protective Actions - Team 2 – SM 3-5
40
Optional Material
  • Expanded Information Section: Unit 3
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Radioactive Packaging
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Radioactive Packaging
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Radioactive Packaging
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Radioactive Packaging
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Radioactive Packaging