Warm Zone Hazmat
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cold zone
area adjacent to the warm zone, where normal treatment is performed
hazardous material
material that poses a threat or unreasonable risk to life, health, or property
hot zone
area where contamination is present, generally adjacent to the accident site
safety zones
areas surrounding a hazardous materials accident, such as hot, warm, and cold zones, designated for specific rescue operations
warm zone
area adjacent to the hot zone, where life-saving care is performed
1. hazardous materials are designated by a four-sided, diamond-shaped sign 2. a 4-digit UN number is often display that can be used to identify the hazardous material 3. color of the placard indicates what class of hazard is contained; a legend also commonly indicates whether the material is flammable, radioactive, explosive, or poisonous
explain the USDOT placard system for identifying hazardous materials
1. internationally recognized diamond-shaped symbol, divided into four smaller diamonds 2. used at fixed facilities 3. identifies potential danger with the use of background colors and numbers 0-4 4. blue = health hazard; red - fire hazard; yellow = reactivity hazard; white - symbols that indicate additional info such as radioactivity, oxidation, need for PPE, and so on
explain the National Fire Protection Association symbols (NFPA 704) for identifying hazardous materials
have the name of the substance, classification, and 4-digit UN ID number; required to be in the cab of a motor vehicle, possession of train crew member in engine or caboose, in a holder on the bridge of a water vessel, or in the aircraft pilot's possession
explain the purpose of shipping papers and MSDS
1. smoking or self-igniting materials 2. extraordinary fire conditions 3. boiling or spattering of materials that have not been heated 4. wavy or unusually colored vapors over a container of liquid material 5. characteristically colored vapor clouds 6. frost near a container leak (indicative of liquid coolants) 7. unusual condition of containers, such as peeling or discoloration of finishes, unexpected deterioration, deformity, or the unexpected operation of pressure-relief valves
list sensory indications that a hazardous materials situation may exist
1. printed materials such as the Emergency Response Guidebook 2. CHEMTREC, a public service division of the Chemical Manufacturer's Association 3. Chemtel, Inc. 4. Poison Control Center
identify resources that can be used in the identification and management of hazardous materials incidents
1. First Responder Awareness - for those likely to witness or discover a hazardous materials but not expected to take action other than call for proper resources and prevent others from entering scene (EMTs) 2. First Responder Operations - for those who initially respond to hazmat emergencies to protect people, property, and the environment and are trained in the use of specialized PPE to help stop emergency from spreading (Fire) 3. hazardous materials technician - for rescuers who actually plug, patch, or stop the release of a hazardous material 4. hazardous materials specialist - advanced knowledge and skills that provide command and support activities at the site of a hazmat emergency
differentiate between the levels of hazardous materials training identified by OSHA
first responder awareness
level of OSHA training that is for those who are likely to witness or discover a hazardous materials emergency but are not expected to take action other than to call for proper resources and prevent others from entering the scene
first responder operations
level of OSHA training that is for those who initially respond to hazmat emergencies to protect people, property, and the environment
hazardous materials technician
level of OSHA training that is for rescuers who actually plug, patch, or stop the release of a hazardous material
hazardous materials specialist
level of OSHA training that is for rescuers with advanced knowledge and skills that provide command and support activities at the site of a hazmat emergency
1. protect the safety of all rescuers and patients 2. provide Pt care 3. decon clothing, equipment, and the vehicle
explain the general rules of hazmat rescue
1. most essential part of hazmat rescue 2. prepare for the worst possible scenario 3. one command officer should be appointed and all made aware of who it is 4. clear chain of command from each rescuer to the command officer 5. established system of communications used throughout the emergency 6. receiving facilities s/b pre-designated and capable of handling large numbers of Pts, have surgical capacity, and established decon procedures
discuss preincident planning as part of hazmat incident management
1. immediately establish incident command system and a command post 2. get following info: nature of the problem; ID of the hazardous material(s) involved; type and condition of containers; existing weather conditions; whether there is presence of fire; time that has elapsed since the emergency occurred; what has already been done by people at the scene; # of Pts; danger of victimizing more people 3. if a fire occurs, do not attempt to extinguish unless you are a trained firefighter because they often require special techniques
discuss considerations in implementing the plan as part of hazmat incident management
1. hot (contamination) zone: contamination actually present; personnel must wear appropriate PPE; # of rescuers limited to those absolutely necessary; bystanders never allowed 2. warm (control) zone: area surrounding hot zone; vital to preventing spread of contamination; personnel must wear appropriate PPE; lifesaving emergency care is performed 3. cold (safe) zone: normal triage, stabilization, and treatment performed; rescuers must shed contaminated gear before entering this zone
discuss establishing safety zones as part of hazmat incident management
1. hot zone: hazard assessment, control of the release or hazard, and rescue performed by trained personnel wearing the appropriate PPE 2. warm zone: lifesaving emergency care, such as airway management and immobilization; initial decon efforts take place here 3. cold zone: continue emergency care (life threats managed in warm); triage Pts; perform necessary treatment and stabilize Pts prior to transport
emergency procedures, including decon, that should take place in each zone
1. time - less time spent near source means less exposure 2. distance - greater distance from source means less exposure 3. shielding - denser material between you and the source means less exposure (need for shielding can be reduced by changing the time and distance factors) 4. quantity - decreasing the amount of material in the area will decrease exposure
describe special considerations in responding to and managing Pts exposed to or contaminated with radiation
radiation sickness
caused by exposure to large amount of radiation; symptoms start from a few hours to days following exposure and can last from days to 7-8 weeks; s/s include nausea and vomiting, diarrhea, hemorrhage, weight loss, appetite loss, malaise, fever, and sores in the throat and mouth; affects immune system, lowering resistance to disease and infection
radiation injury
local injury that is generally caused by exposure to large amounts of less penetrating particles, such as beta particles; s/s include hair loss, skin burns, and generalized skin lesions
radiation poisoning
occurs when the Pt has been exposed to dangerous amounts of internal radiation; results in a host of serious diseases, including cancer and anemia
1. amount and type of personal shielding you use 2. strength of radiation source 3. distance from the radiation source 4. type of radiation 5. how long you are exposed 6. how much of your body is exposed
factors that determine the amount of risk posed to Pts and rescuers by a source of radiation
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