An Unexpected Release of Energy!
What happens when a tree or branch, under tension, suddenly breaks, rolls or springs back toward you?
FIPS 7825 - Serious Harm: A number of wind-thrown trees, felled up-hill, required head pulling. As the rigging settled on these trees its combined weight rested on one larger branch (see picture top of page 4). As the breaker-out moved in to chain-up this larger branch suddenly snapped away from the stem in a whipping-action. The branch struck the breaker-out fracturing his cheek and eye socket!
Always look out for stored energy!
Every day, forestry workers face situations and circumstances that contain a lot of stored energy. Sometimes that energy is obvious and at other times, it is not. Indeed, something else in the environment could obscure the stored energy e.g. a clump of scrub or a mound of soil. Here are some factors to keep in mind:
-
Many incidents happen during upset conditions - something is different, or things have changed. In FIPS 7825 (above), the trees had been felled up-hill (necessarily so).
-
Wind thrown trees will invariably contain stored energy - uneven forces!
-
Never put yourself into a hazardous area particularly under a raised object.
-
Properly identify if a stem or branch is under tension or compression.
-
Watch out for hydraulics - one small glitch (or slip) can unleash the full effects.
-
Never use your hands or fingers to search for hydraulic or air leaks.
-
Apply the safety locks/devices/brakes if these are available. Chock the wheels.
-
Seek a second opinion - two heads are better than one in tricky situations!
View this article in Safety Bulletin 101