Terminology
A narrow excavation made below the surface of the ground that is generally deeper than it is wide, with a maximum width of 15 foot.
Trench
A confined space is an enclosed space that has?
limited access
What equates to 33.45% of the fatal four?
Falls
An unplanned event in which no one was was injured and no damage to property occurred, but during which either could have happened?
Near-miss
Keeping your work area clean and free of scraps or spills is referred to as?
Housekeeping
The damage that can be done to eyes after brief exposure to ultraviolet light from arc welding?
Flash Burn
Drilling concrete requires the use of a respirator because it produces?
Silica Dust
What percentage of injured workers require hospitalization?
Approximately 33%
What does the color sign that is white with a black square and white letters stand for?
Out of order-Do not Use
Metal ladders should NOT be used near?
Electrical Equipment
A document that must accompany any hazardous substance?
Safety Data Sheet (SDS)
The term PEL refers to worker's?
Maximum exposure limits
What is the distance away from someone, that if they can't hear you when you yell, that hearing aids should be used?
2 feet
A line attached to a tool or object so a worker can pull it up after climbing a ladder or scaffold?
Hand-line
Circuit-breakers and disconnect switches are examples of?
energy-isolating devices
Incidental grounding of a conducting electrical wire?
Ground Fault
The purpose of double insulating and electrically powered tool is to?
Protect users from electrical shock
Amperage that will stop heart beating; severe burns occur. Death may occur?
10 Amps and above
What should the overlap be on a 48FT ladder?
4FT
The type of trench protection designed to prevent trench wall cave-ins is?
shoring
The Occupational Safety and Health Administration standard that requires contractors to educate employees about hazardous chemicals on the job site and how to work with them safely.
Hazardous Communication (HAZCOM) standard
The type of soil most likely to result in trench cave-in?
Type C
Positioning anchor points are required to be rated at what pound strength?
3,000-pounds
How much soil can put enough pressure on your lungs to prevent you from breathing?
2 to 3 foot
When in storage, oxygen and fuel cylinders used in oxyfuel cutting must be separated by?
A metal barrier