Confined space
Oxygen can be dangerous at what level
24.6%
Hazards that can cause electrical injuries include
Cracked extension cord
Dust, metal, vapors
To eliminate falls on scaffold, platforms on working levels must be
Fully planked
A contributing factor in falls from a ladder is
Improper ladder selection, Overreaching, Slipping on rung/cleats
Flammable gases and vapors may be ignited by
Friction, cutting and welding sparks, hot surfaces
Shock can result when your body is
In contact with two wires of an electrical circut
Goggles
For supported scaffolds, the ratio between height and width is
4:1 feet
When using a portable ladder, make sure the side rails extend at least ____ above the upper landing surface
3ft
What must an entrant wear for a non-entry rescue
Chest or full body harness
A conductor of electricity includes
Perspiration
Compression
Scaffold must be check by who before working on it
Competent person
Handrails and top rails of a stair rail system must be able to withstand a force of _____ when applied within 2 inches of the top edge
200 lbs
If oxygen deficiency or toxic air remains, you cannot work in a space without
Appropriate, effective PPE
To prevent electrical accidents
Insulate
Type of hard hat that provides no voltage protection
Class C
When getting to the work level of a scaffold you should never use the
Crossbraces
Stair rails must not be less than ____ high
36 inches
Confined space hazards are categorized as
Atmospheric and physical hazards
Two types of groundings are
Electrical circuit and electrical equipment
If required to wear a respirator, you must first have
Medical evaluation
Guardrail toprails manufactured or placed in service after January 1 2000, must be between ____ and 45 inches high
38
A stairway or ladder must be provided by an employer when a difference in elevation reaches
19 inches