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

Question 1

Under OSHA's LOTO standard (29 CFR 1910.147), what must an employer do before employees perform LOTO procedures for the first time?

Accepted Answer

Train employees and certify the training

Answer

OSHA requires employers to train each authorized and affected employee and certify that training has been accomplished.

Question 2

Which type of energy is specifically addressed by the term 'stored energy' in LOTO procedures?

Accepted Answer

Residual energy such as capacitors, springs, or pressurized fluids

Answer

Stored (residual) energy includes capacitor charge, compressed springs, pressurized hydraulics/pneumatics, and gravity potential that remain after the primary energy source is isolated.

Question 3

A construction worker needs to work inside an electrical panel. After de-energizing and locking out, which test confirms zero energy state?

Accepted Answer

Testing with an appropriate voltage-rated meter or tester on all conductors

Answer

OSHA requires verification of zero energy state by testing with appropriate test equipment rated for the voltage on all conductors before work begins.

Question 4

What is the minimum approach distance for unqualified workers near exposed energized parts operating at 50–300 volts under OSHA 1910.333?

Accepted Answer

Avoid contact — no specific distance required for low voltage

Answer

For voltages up to 300V, unqualified workers must avoid contact but OSHA does not specify a minimum numeric distance; qualified workers' approach distances apply.

Question 5

Which of the following correctly describes a 'tagout' device under 29 CFR 1910.147?

Accepted Answer

A prominent warning device that cannot be removed without deliberate action

Answer

A tagout device is a prominent warning tag that can only be removed by the authorized employee who installed it and that indicates the energy-isolating device shall not be operated.

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