Pleasanton Fire Department Rescue Tech Training
Nice to see training classes happen around the country. Checkout this class in the Lone Star State.
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.
Motor City Monday Extrication Tip; Rear Seat Airbags
Just another interesting airbag to learn about.
Rear Seat Airbag
Mercedes Benz is one of the world leaders in occupant safety in their vehicles and they added another interesting safety feature. The 2021 Mercedes S-Class offers rear passenger airbags that deploy from the back of the front seats. The airbag wraps around the occupant’s head with a tubular structure while the remaining bag inflates to catch and cushion.
Outside the Box Anchor
Outside the Box Anchor
In the pictures below a Paratech base plate is used with pickets as an anchor point on soil/grass. The picket ratings currently used date back decades and are for loamy soil. A single picket is rated at 700 pounds, a two-picket system is 1400 pounds and a three-picket system is 2000 pounds. The angle is always the biggest issue as well as consistent depth and alignment.
A Paratech hinged 12″ Base plate W/Anchor Ring has eight (8) holes to accept 1” (2.5 cm) pickets. The built-in anchor ring absorbs more than 2 tons with a 4:1 safety factor. It is easy to use as a fixed point.