Bridge Study Guide

Front

What percentage of workers were not wearing eye protection when an eye injury occurred?

Back

50%

Front

The MUC for a half face air purifying respirator with a PEL for lead of 50 ug/m3 and a PF of 10 is:

Back

500

Front

Only _______ of laborers have normal hearing by the time they are 45 years old

Back

10%

Front

The following should be available if there is a danger of falling into water: Coast Guard approved vest, Boat, Buoy with at least 90 feet of line, Work vest that floats.

Back

All of the above

Front

Night workers and flaggers need to wear vests that ___________ light.

Back

Reflect

Front

Live parts of electrical equipment operating at ______ volts or more shall be guarded against electrical contact.

Back

50

Front

Temporary 120-volt outlets shall have an approved ________.

Back

Ground fault circuit interrupter

Front

Extension cords used with portable electric tools shall be the _____ wire type designed for hard or extra hard use.

Back

3

Front

Extension cords shall be fastened with staples, hung from nails, or suspended with wires to keep cords from contacting the working surface.

Back

False

Front

The safe working distance for an unqualified worker working near overhead power lines of 50 kV (kilovolts) or less is:

Back

10 feet