Connect with us

Quick Tips

Motor City Monday Extrication Tip; High voltage system deactivation

Automakers make Emergency Responder Guides for hybrid and electric vehicles that explain step by step who to deactivate the high voltage system. When the airbags are deployed in an accident the high voltage system is automatically deactivated (de-energized).

Published

on

12 volt battery hybrid vehicle rescue

High Voltage System Deactivation

Automakers make Emergency Responder Guides for hybrid and electric vehicles that explain step by step who to deactivate the high voltage system. When the airbags are deployed in an accident the high voltage system is automatically deactivated (de-energized).
bmw-rescue-erg-guide-extrication-firefighter

Deactivate the high voltage system – at the rear of the vehicle

Take plug for high voltage disconnect (1) out of the holder. Press plug disconnect fuse (2) downwards and pull it out. Pull plug for high voltage disconnect apart in the direction indicated by the arrow.

extrication battery location

Deactivate the high voltage system – at the front of the vehicle

Cut through cable (1) for the high voltage disconnect (cutting solution). The high voltage system is deactivated.

High voltage disconnect

You can download the complete Emergency Response Guide with this link:

Mike Smith, Absolute Rescue's Editor in Chief, is a veteran of the fire/rescue service in Michigan, who also works in the automotive industry as a designer. Have an idea of suggestion for the site? Contact Mike here

Quick Tips

Stabilization and Electric Vehicles

The battery weight and location are important considerations for stabilization.

Published

on

One of the fastest methods of initial stabilization is to immobilize the vehicle by turning the 12-volt system OFF.  Securing the ignition is accomplished by obtaining the key fob or keys and put them in a rescue apparatus Furthest away from the scene.  Another quick, initial stabilization option are wheel chocks.

Chocks used during fire pumping operation are an excellent option. However, often a line is stretched off the apparatus and the engineer used the chocks on the apparatus.  Many extrication teams use two wheel chicks tied together with a rope.  Turtle Plastics has chicks that are lightweight and easy to deploy.

Stabilize the vehicle with cribbing, by removing air from the tires, or utilize the Lift Airbag Equipment for rescue.

Wheel chocks must match the size of the tires on the vehicle and used in pairs Tire size is designed to be proportional to the vehicle’s weight and size.

Three main factors affect the performance of wheel chocks:

  • The angle of the road surface, called slope or grade. Parking on an angle greater than 10 degrees increases the risk of the car rolling off or over the chock.
  • The size (height) of the wheel chock compared to the wheel height. Extra large wheel chocks are suitable for e.g. parked air craft where wind forces may come into effect.
  • The surface slip or friction of the road surface, as the wheel chock may slide downhill due to wet grass or ice. Increasing the size of the wheel chock will not necessary allow the parking on inclines greater than 30% gradient (16.6 degrees).
  • Keep in mind, the vehicle most likely will require full stabilization which should include cribbing and struts where necessary. Vehicles like a side resting vehicle or roof resting require struts to stabilize.

 

2017-qx60-hybrid-extrication-paratech

Continue Reading

Quick Tips

TECH TIP: Shorten the Strap

Often on side resting vehicles, once a strut is placed the fixed end of the ratchet strap is too long to tighten the strut.

Published

on

Ratchet Strap Handle

Often on side resting vehicles, once a strut is placed the fixed end of the ratchet strap is too long to tighten the strut. First off, if you are using a cluster hook set, use the smallest hook possible. Secondly, if possible use the hook on the fixed end of the ratchet strap. Finally, you can gain approximately 6 inches of space by folding the fixed end strap in half and attaching the hook on the handle as shown in the picture below.Rachet-Strap-Webbing-Handle-Side

Continue Reading

Quick Tips

Never saddle a dead horse!

The Associated Wire Rope Fabricators, INC Facebook is a great page for tech rescue personnel to follow. Below is a image that was posted on their Facebook page under the title “Never saddle a dead horse!”. The image explains how

Published

on

Never saddle a dead horse!

The Associated Wire Rope Fabricators, INC Facebook is a great page for tech rescue personnel to follow.  Below is a image that was posted on their Facebook page under the title “Never saddle a dead horse!”.  The image explains how U-Bolt Saddle Clamps should be used on wire rope.

Associated Wire Rope Fabricators

 

Continue Reading
Advertisement

Sponsored By

Training Content Partner

Facebook