A fibrous material that causes mesothelioma.
A potential danger in the air or a condition of poor air quality.
Atmospheric hazard
A method of protecting workers from cave-ins by excavating the sides to form a series of levels with vertical or near vertical surfaces between levels.
A person who is able to identify a hazardous or potentially hazardous situation.
Competent Person
A space that has limited openings for entry and exit.
confined space
A measure of sound intensity or loudness.
A source of potential energy that is capable of doing work.
Energy Source
working conditions in which explosive or hazardous gases are present.
Gassy Operations
Devices that protect operators form dangerous moving parts.
Ropes, chains, cables, or rods attached to something as a brace or guide.
Guy Wires
A federal OSHA regulation requiring employers to inform workers about chemical hazards on the job site.
A life threatening condition caused by exposure to very cold temperatures.
Tools that must strike or be struck to accomplish their task. They include hammers, chisels, and taps.
Impact Tools
Tools that use a liquied fuel (such as gasoline or liquid propane) to operate.
Liquid Fuel Tools
A lock that is placed on an energy isolating device and the equipment cannot be operated until the device is removed.
Any device that holds an energy isolating device in a safe position preventing the energizing of machinery or equipment.
Lockout Device
A process for identifying hazardous equipment and locking it to prevent any workers from using it until it is certified for safe use.
Lockout Tagout
A document that identifies the material and gives the exposure limits, physical and Chemical characteristics precautions for safe handling and use, and specific control measures.
MSDS sheet
A four color diamond label placed on an object to alert people to specific safety hazards.
NFPA Warning Diamond
The division of U.S. Dept. of Labor mandated to ensure a safe and healthy environment in the workplace.
An atmosphere in which there is not enough oxygen to support life. Usually considered less than 19.5 percent oxygen by volume
Oxy Deficient Area
Tools that require a power source, such as electricity, hydraulics, or pneumatics, to operate
A structure that supports the sides of an excavation to prevent cave ins
A depression in the earth that is caused by unbalanced stresses in the soil surrounding an excavation

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