Cold Weather Safety Refresher
Winter is in full force across many parts of the world. The east coast of the United States is currently feeling the wrath of a Bomb Cyclone. With the call for emergency responders in those areas most likely increasing during the storm, it is never a bad time to review cold weather safety tips.
Environmental cold can affect any worker exposed to cold air temperatures and puts workers at risk of cold stress. As wind speed increases, it causes the cold air temperature to feel even colder, increasing the risk of cold stress to exposed workers, especially those working outdoors. In regions that are not used to winter weather, near freezing temperatures are considered factors for “cold stress.”
Types of Cold Stress
Trench foot is a non-freezing injury of the feet caused by prolonged exposure to wet and cold conditions. It can occur in temperatures as high as 60°F if feet are constantly wet. Injury occurs because wet feet lose heat 25-times faster than dry feet.
What are they symptoms of trench foot?
Reddening skin, tingling, pain, swelling, leg cramps, numbness, and blisters.
Frostbite is caused by the freezing of the skin and tissues. Frostbite can cause permanent damage to the body, and in severe cases can lead to amputation. The risk of frostbite is increased in people with reduced blood circulation and among people who are not dressed properly for extremely cold temperatures.
What are the symptoms of frostbite?
Reddened skin develops gray/white patches in the fingers, toes, nose, or ear lobes; tingling, aching, a loss of feeling, firm/hard, and blisters may occur in the affected areas.
Hypothermia occurs when the normal body temperature (98.6°F) drops to less than 95°F. Exposure to cold temperatures causes the body to lose heat faster than it can be produced. Prolonged exposure to cold will eventually use up the body’s stored energy. The result is hypothermia, or abnormally low body temperature. Hypothermia is most likely at very cold temperatures, but it can occur even at cool temperatures (above 40°F) if a person becomes chilled from rain, sweat, or immersion in cold water.
What are the symptoms of hypothermia?
An important mild symptom of hypothermia is uncontrollable shivering, which should not be ignored. Although shivering indicates that the body is losing heat, it also helps the body to rewarm itself. Moderate to severe symptoms of hypothermia are loss of coordination, confusion, slurred speech, heart rate/breathing slow, unconsciousness and possibly death. Body temperature that is too low affects the brain, making the victim unable to think clearly or move well. This makes hypothermia particularly dangerous because a person may not know what is happening and won’t be able to do anything about it.
Information for this post was taken from the OSHA.gov website. Complete list of links below:
- Cold Stress . (OSHA)
- NIOSH Fast Facts: Protecting Yourself from Cold Stress. National Institute for Occupational Health (NIOSH)
- OSHA’s Cold Stress Card
Cold Weather Research
In case you are wondering if anyone is researching the human performance of firefighters in cold weather environments. The answer would be yes. Some of the PhD student’s at the University of Ontario Institute of Technology (UOIT) are researching what we go thru. You can find more here.
Cold Weather Rehab
Rehab is an important part of any fire service operation. However, the cold weather makes rehab extremely important to protect firefighters and get them back in service as quickly as possible. The International Association of Fire Fighters has a great Rehab Presentation that you can download.
Large Animal Rescue
Working with their past experince, the Patterson Fire Department’s completed their 4th horse rescue in the past several years.
Per the post from the Patterson Fire Department’s Facebook page:
At 0732, 25th of August 2021, the Patterson fire department was dispatched for a public assist to a local farm. Patterson’s heavy rescue, 22-6-1, arrived on scene and found a 31-year-old male horse, named “Dozer”, in distress. He had apparently fallen and managed to get himself stuck between a rock and a fence line. At first, the crew attempted to assist the horse in getting up by shifting his position. It became apparent that additional equipment was going to be needed to help Dozer out since he had become too exhausted to get up on his own. After some discussion, it was established that the best plan of action was to use a Paratech bipod system. It would be used as an artificial high directional with TU-32 griphoist’s assistance to lift the horse up. With a lot of sweat and effort, the crew was able to lift the horse up onto his feet. After some much-needed fluids and rest, we were happy to see Dozer trot away, unassisted.
An interesting fact, this is Patterson Fire Department’s 4th horse rescue in the past several years, all with successful outcomes.
Photos below from Andrew Akin
Rescue Methods BGSU 2021 Rescue Tech Series
These courses are NFPA compliant and covers all six disciplines of technical rescue operations. Students will utilize the latest and greatest equipment and will put learned skills to the test in intense hands-on scenarios.
General information on the Certified Rescue Technician Program.
- Rope Rescue Technician
- Water Craft Ops / Swift Water Ops
- Confined Space Technician
- Vehicle & Machinery
- Trench Rescue Technician
- Structural Collapse Operations
Rescue Methods BGSU 2021 rescue tech series with structural collapse ops.
Motor City Monday Extrication Tip; Electric Vehicle Battery Pack Reinforcements
As vehicles change, our knowledge must continue to keep pace and expand our mental toolbox. The extrication tool manufacters have kept pace with their cutters, spreaders, and rams to combact these strong steels. It’s our job to stay
Electric Vehicle Battery Pack Reinforcements
Like everything in life, vehicles are changing, well vehicles keep changing. World leaders are pushing green vehicles which will increase our interactions with electric vehicles. First off, let’s look at the common acronyms of several common green and traditional vehicles.
- BEV = Battery Electric Vehicle
- PHEV = Plug-in Hybrid Electric Vehicle
- HEV = Hybrid Electric Vehicle
- ICE = Internal Combustion Engine
Unlike BEV, PHEV, and HEV, the term ICE refers to the engine itself, rather than the type of car. Normal/traditional gasoline and diesel cars have internal combustion engines.
Electric Vehicles present several challenges to firefighters with battery fires leading the way. The automakers are designing and engineering extremely strong protective cages around battery packs. We are no strangers finding boron, martensite, and press hardened steels in the pillars, roof rails, and fender wells. However, in a BEV, the rocker panels and cross vehicle reinforcements will have boron and martensite steels to protect the battery pack from collisions that could comprise it. In the images below, the 2021 Ford Mustang Mach E has this strong steel in the rocker panels and cross vehicle reinforcements. The automakers can tie in the strong rocker panels into the front fender wells requiring us to make deep cuts during a dash lift or roll.
The image below shows the different testing vehicles are subjected to and a strong battery cage can not only protect the battery pack, but also the occupants of the vehicle.
As vehicles change, our knowledge must continue to keep pace and expand our mental toolbox. The extrication tool manufacturers have kept pace with their cutters, spreaders, and rams to combat these strong steels. It’s our job to stay current where the automakers are using strong steel.
Images from several Great Designs in Steel (GDIS) 2021 Presentations.