NCCER Construction Site Safety Basics 2

Question 1

What is the minimum distance that workers must maintain from overhead power lines when operating equipment?

Accepted Answer

10 feet

Answer

OSHA requires a minimum clearance of 10 feet from overhead power lines for workers and equipment operating near lines of 50kV or less. This distance increases for higher voltages.

Question 2

Which type of fire extinguisher is appropriate for fires involving energized electrical equipment?

Accepted Answer

Class C — dry chemical or CO2

Answer

Class C fire extinguishers use non-conductive agents like dry chemical or carbon dioxide, making them safe to use on fires involving energized electrical equipment.

Question 3

What is the purpose of a safety stand-down on a construction site?

Accepted Answer

To provide a focused period for safety training and hazard awareness discussions

Answer

A safety stand-down is a voluntary pause in work where employers talk directly with workers about safety, reinforce hazard awareness, and discuss specific risks relevant to the job site.

Question 4

When must a competent person perform a site inspection on a construction project?

Accepted Answer

At the beginning of each work shift and after any event that could affect conditions

Answer

A competent person must inspect the work site at the start of each shift and after any occurrence (such as a storm or equipment failure) that could create new hazards for workers.

Question 5

What is the leading cause of death on construction sites according to OSHA's Fatal Four?

Accepted Answer

Falls

Answer

Falls consistently account for the highest number of fatalities in the construction industry, making fall prevention the top safety priority according to OSHA's Fatal Four statistics.

NCCER (National Center for Construction Education & Research) Practice Test

NCCER (National Center for Construction Education & Research) Practice Test

NCCER Construction Site Safety Basics 2