Every trench oner 4 feet deep there must be an exit every ______ feet.
25 feet
The term PEL refers to a worker's _______.
Maximum exposure limit (Permissible)
Name 1 characteristic of a confined space.
Limited entry / limited exit / limited ventilation / not designed for human occupancy
Most cave-ins happen suddenly with little or nor warning and occur in trances 5 ft to ______ ft.
15
A condition in which body temperature drops a few degrees below normal is _________.
Cold stress
A fire extinguisher labeled C is used to fight what kind of fire?
Electrical
The minimum distance that a spoil pile must be located from the edge of an excavation is _________.
2 feet.
Swollen eyes and a sandy feeling in the eyes are symptoms of a ________.
Flash burn
Which 3 of these must be present to start a fire?
Hydrogen, oxygen, fuel, liquid, Carbon dioxide, heat
Oxygen, heat, fuel
Why must Grease and oil be kept away from oxygen tanks?

What is the most common cause of death for equipment operators?
Equipment rollover
Name 2 of the 4 leading causes of death in the construction industry.
electrical, struck-by, caught-in/between, falls
A sign with a white background and green panel with white lettering is a ____________.
How can you properly dispose of oily rags:
a - take to an outside dumpster
b - put in specially designed container
c - wash with specially designed detergent
b - put in specially designed container
HAZCOM classified paint, concrete and wood dust as:
a - non hazardous materials
b - dangerous materials
c - radiation materials
b - dangerous materials (hazardous)
a - All injuries
b - Serious injuries
c - Nonhazardous injuries
a - All injuries
What kind of ladder must not be used near electrical equipment?
Metal ladder
What is 1 type of scaffolding?
Self-supporting
Suspended
Interlocking stacked material is done by:
a - placing the objects at 90°
b - placing the objects at 50°
c - placing the objects at 180°
a - placing the objects at 90° or right angles
What is the maximum height-to-base ratio to reduce the risk of workers being hurt?
4:1
List 2 of the 3 ways a worker can be exposed to hazardous materials.
absorption, inhalation, ingestion
Circuit breakers and disconnect switches are examples of:
a-energy-removal devices
b-energy-saving devices
c-energy-isolating devices
c-energy-isolating devices
What is proximity work?
Worked performed near a hazard but not in direct contact.
What is the minimum safe working distance from exposed electrical conductors?
a-unlimited
b-determined by the voltage
c- depends on the safety manual
b-determined by the voltage
What type of prevention prevents a trench wall from caving in?
a-shoring
b-shielding
c-snoring
a-shoring