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Partner K-12 Power Saw Operation

Recently military personnel were clearing fallen tree debris utilizing the Partner K-12 with a diamond blade. During the operation a 2” X 2” section of the blade separated and pierced a soldier’s boot causing a serious injury. An investigation by the military revealed that the blade had rust and small cracks had developed which contributed to the failure. The recommendation from the investigation was for all blades to be inspected and those with any with signs of environmental compromise (rust) or excessive wear should be taken out of service immediately and replaced. This is a good recommendation for our personnel as well.

While age and rust can deteriorate a blade,overheating is thesingle-mostcommon cause of blade failure! Manufacturers and experts in the field agree that the best way to prevent a blade from coming apart is to not overheat the blade during cutting operations. Firefighters overheat blades by attempting to cut heavy metal faster than the saw “wants” to cut. Frequently, they apply too much pressure on the saw and do not allow time for the blade to cool. Remember, we are operating our saws in an environment that does not allow for lubricant to be added keeping the blade cool. Our blades are designed to be cooled by air.
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When cutting heavy material the operator should often back the blade slightly out of the cut in order to allow the blade to cool. One indication of a blade overheating is that it will start to wobble. This occurs because the steel in the blade is losing its temper. Additionally, any unusual vibration could be a sign that the blade is in imminent danger of coming apart. If either of these occurs the firefighter MUST stop using the saw immediately and inspect/change the blade.

Personnel should review the K12 Saw Maintenance and Blade Selection video created by MDFR found in EMSED.com. Log in and scroll to ‘My Current Courses’ then click on ‘USAR’ and you’ll find the video option.

Be Careful Out There!

Calendar

Sep 29-30, 2011 Intelligent Firefighting “Be Aggressive . ..Don’t Be Stupid”

With Capt Bill Gustin, Miami Dade Fire Rescue Double Tree Milwaukee City Center Milwaukee, Wisconsin

Sep 29-30, 2011 Intelligent Firefighting “Be Aggressive . ..Don’t Be Stupid”

With Capt Bill Gustin, Miami Dade Fire Rescue Double Tree Milwaukee City Center Milwaukee, Wisconsin

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