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17 Cards in this Set
- Front
- Back
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Haz-Mat Ops Bulletin 4
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Radiological Incidents Guidelines
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The initial stages of a radiological event is defined in one of two ways:
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The rescue of live victims.
In the absence of victims, establishing a control line, isolating, and evacuating the area. Page 1 |
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The National Capitol Region’s fire departments and hazardous material teams will use what as the standard unit to measure radiological exposure?
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Roentgen (R)
Page 2 |
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Radiation exposure rates will be measured in what three values?
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Micro-roentgen (uR), milli-roentgen (mR), and Roentgen (R) per hour (/hr).
1,000 micro-roentgen (uR) = 1 milli-roentgen (mR) 1,000 milli-roentgen (mR) = 1 Roentgen (R) thus 1,000,000 micro-roentgen (uR) = 1 Roentgen (R) Page 2 |
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What is that natural background of radiation in the DC area?
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5 – 20 uR/hr = .005 - .2mR/hr
Page 2 |
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What does ALARA stand for and what are its three basic principles?
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ALARA (As Low As Reasonably Achievable) shall be used to limit responders’ exposure to radiation.
The basic principles of ALARA are: Maximize Distance Minimize Exposure Time Maximize Sheilding Page 2 |
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What are the National Council on Radiation Protection and Measurement (NCRP) recommended maximum dose limits?
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5 R (REM) – All Activities
10 R (REM) – Protecting major property 25R (REM) – Lifesaving or protection of large populations >25 R (REM) – Lifesaving or protection of large populations, only by volunteers who understand risks. 1 R =1 RAD (rad. absorbed dose) =1 REM (rad. equiv. man) Page 3 |
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The COG Hazmat sub-committee recommends that ______________ units carry radiation detection devices capable of detecting the presence of radiation and measuring the total dose received (dosimeters).
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All front line fire department
Page 5 |
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If initial fire department personnel are NOT equipped with radiological dosimeters, may they conduct life saving operations?
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Yes, for a maximum of 15 minutes. Note – If initial fire department personnel ARE equipped with radiological dosimeters, they may conduct life saving operations in accordance with the Max. Dose Limits.
Page 6 |
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Is the following statement true or false? Radioactive contamination (whether internal or external) is never immediately life threatening and therefore decontamination should never take precedence over significant medical conditions.
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True
Page 6 |
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If no victims are present, initial actions should be limited to what?
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Establishing a control line based on the presence of contamination, isolate area, evacuate area, deny entry, establish staging area, and establish extended action plan.
Page 6 |
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If contamination is present, establish the control line at?
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2 times the background readings or 50 uR/hr. Note – establish restricted zones, including downwind plume area.
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What are the maximum zone limits for a Radiological Dispersal Device with life safety concerns?
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Cold Zone – 2mR/hr
Warm Zone – 2mR – 10mR/hr Hot Zone – over 10R/hr Absolute Turn Back – 200R/hr Page 7 |
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What do dosimeters record and how often should they be read?
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Total exposure to external gamma radiation. They should be read and reported every 15 minutes.
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Represents the outer boundary of an emergency incident and an area of the least potential for contamination exposure to workers and others. Generally used to act as buffer to keep persons not involved in the response away from incident at a safe distance.
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Cold Zone
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An area of less potential for contaminant exposure to workers and is the zone that contains the decon area. The decon activity is located on the upwind and upgrade side and extends from the hot zone to the cold zone. This area is also used to support responders with misc. equipment needs such as changing bottles, replacing damaged PPE etc. Everyone exiting must pass through Decon
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Warm Zone
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Represents the area with the greatest degree of threat to individuals working in the area and requires the highest level of PPE. Area clearly marked with banner tape or a satisfactory substitute to indicate to workers the high potential to exposure
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Hot Zone
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