| A | B |
|---|
| Respirator | A device that provides clean, filtered air for breathing, no matter what is in the surrounding air. |
| Scaffold | An elevated platform for workers and materials. |
| Stepladder | A self-supporting ladder consisting of two elements hinged at the top. |
| Trench | A narrow excavation made below the surface of the ground that is generally deeper than it is wide, with a maximum width of 15 feet. See also excavation. |
| Lanyard | A short section of rope or strap, one end of which is attached to a worker’s safety harness and the other to a strong anchor point above the work area. |
| Lockout tagout | A formal procedure for taking equipment out of service and ensuring that it cannot be operated until a qualified person has removed the lockout or tagout device (such as a lock or warning tag). |
| Material safety data sheet (MSDS) | A document that must accompany any hazardous substance. The MSDS identifies the substance and gives the exposure limits, the physical and chemical characteristics, the kind of hazard it presents, precautions for safe handling and use, and specific control measures. |
| Occupational Safety and Health Administration (OSHA) | An agency of the U.S. Department of Labor. Also refers to the Occupational Safety and Health Act of 1970, a law that applies to more than more than 111 million workers and 7 million job sites in the country. |
| Personal protective equipment (PPE) | Equipment or clothing designed to prevent or reduce injuries. |
| Proximity work | Work done near a hazard but not actually in contact with it. |
| Shoring | Using pieces of timber, usually in a diagonal position, to hold a wall in place temporarily. |
