CHST CHST - Construction Health and Safety Technician Electrical Safety and LOTO Questions and Answers 3

Question 1

An employee discovers that a lockout device has been removed without proper authorization. What should a CHST recommend as the immediate action?

Accepted Answer

Re-apply lockout, stop work, and investigate the unauthorized removal

Answer

Unauthorized removal of a lockout device is a serious safety violation requiring immediate work stoppage, re-application of lockout, and investigation.

Question 2

Per OSHA 1926 Subpart K, which of the following is an acceptable method to protect employees from electrical hazards in wet locations on a construction site?

Accepted Answer

Providing GFCI protection on all 120-volt, 15- and 20-ampere circuits

Answer

OSHA requires GFCI protection for 120-volt, single-phase, 15- and 20-ampere receptacle outlets on construction sites, which is especially critical in wet conditions.

Question 3

What is the primary purpose of a 'try-out' procedure during lockout/tagout?

Accepted Answer

To verify that the energy isolation is effective and the equipment cannot be restarted

Answer

The try-out procedure involves attempting to restart the equipment after lockout to verify that all energy sources have been effectively isolated.

Question 4

Which of the following scenarios would require an arc flash hazard analysis per NFPA 70E on a construction site?

Accepted Answer

Working on energized electrical equipment operating at 50 volts or more

Answer

NFPA 70E requires an arc flash risk assessment when workers may be exposed to energized electrical conductors or circuit parts operating at 50 volts or more.

Question 5

A group lockout/tagout procedure is being used on a construction project. What is the primary responsibility of the authorized employee in charge?

Accepted Answer

Ensuring that all members of the group are protected throughout the lockout and coordinating the application and removal of lockout devices

Answer

The authorized employee in charge of a group lockout must ensure continuity of protection for all workers and coordinate the overall lockout/tagout effort.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

CHST CHST - Construction Health and Safety Technician Electrical Safety and LOTO Questions and Answers 3