![]() ![]() The Centers for Disease Control reports, “Each year, approximately 36,000 people are treated in hospital emergency departments for injuries from using chain saws.” For this reason, OSHA requires that chainsaw operators use chainsaw chaps or pants.Ĭhainsaw chaps and pants are made with layers of tightly packed plastic fibers. Select hearing protectors that provide adequate but not excessive protection. It is important to hear other people, trees cracking, other warning signals, and important machine sounds while operating a chainsaw. A saw operator needs an NRR of 25 dB to reduce the noise below 85 dB.ĭon’t overprotect. The NRR is the decibel reduction provided by hearing protection. Pick a style that works for you and use it.Īll hearing protection has a noise reduction rating (NRR). To be effective, hearing protection must be worn consistently. Hearing protection is required when 85 dB is exceeded. A conversation is about 60 dB, a vacuum cleaner is about 70 dB, a lawn mower is about 90 dB, and a chainsaw is about 110 dB. Noise is measured in units called decibels (dB). HEARING PROTECTIONĬhainsaw operators need hearing protection. Eyewear can be made to your vision prescription, even if you wear bifocals. Alternatively, consider customized prescription safety eyewear. There are safety glasses and goggles that fit over prescription eyewear. It will be stamped on all approved eyewear. Select eye protection that resists fogging and has UV protection. Flying objects can shatter the lenses of regular eyewear, adding plastic or glass to the list of potential projectiles. While a face guard with a mesh screen protects the face, it isn’t enough to protect eyes from injury. The face and eyes are soft targets for flying debris ripped out by a chainsaw. Even if the hat looks good, it should be replaced every three to five years or at the manufacturer’s recommendation. If it’s worn or broken, replace it immediately. Replace it if there are dents, penetrations, plastic chip flakes, discolorations,or a chalky appearance. The ANSI number means that the helmet has met all of the safety requirements provided by the American National Standards Institute. ![]() A safe helmet has the manufacturer’s name or identification, the date of manufacture, the type and class of helmet, the head size, and “ANSI Z89.1” stamped on the inside. Saw operators are often hit on the side and top of the head and would benefit from a helmet with side protection and a chin strap. Branches fall, saws spit objects out of trees, and climbers drop things. For tree fellers, that means a hard hat should be worn immediately upon exiting the truck. HEAD PROTECTIONĪ protective hard hat should be worn whenever you are working in an area where it’s possible that falling objects could cause injury to the head. The Occupational Safety and Health Administration (OSHA) requires that saw operators wear head protection, eye protection, hearing protection, chainsaw chaps or pants, and suitable footwear. When the first two fail, PPE can save your life. Spring poles snap and logs roll unexpectedly.Ī chainsaw operator has three lines of defense: education, good technique, and personal protective equipment (PPE). Even when the tree is on the ground, danger lurks in wood under tension. Operators fall off ladders and out of trees, or they trip as they move through brush over uneven ground. Saw operators are often struck by falling limbs and trunks as the tree moves and shifts while it’s cut. Accidental contact with chainsaws often results in serious injuries to operators.Ĭuts are not the only hazard a saw user must avoid. The teeth on the chain are designed not to cut but to remove material. The chain moves at 55-60 miles per hour, or about 88 feet per second. The velocity in feet per second is equal to the distance in feet divided by time in seconds.Operating a chainsaw is inherently dangerous. ![]() For example, ft/s is expressing a change in length or distance relative to a change in time.įeet per second can be expressed using the formula: In the expressions of units, the slash, or solidus (/), is used to express a change in one or more units relative to a change in one or more other units. ![]() For example, 1 foot per second can be written as 1 ft/s, 1 ft/sec, or 1 fps. Feet per second can be abbreviated as ft/s, and are also sometimes abbreviated as ft/sec or fps. The foot per second is a US customary and imperial unit of speed. Feet per second are a measurement of speed expressing the distance traveled in feet in one second. ![]()
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