FREE CHST General Questions and Answers Flashcards

Under OSHA's Scaffolding Standard (29 CFR 1926 Subpart L), scaffolds must be capable of supporting their own weight plus how many times the maximum intended load?

Answer: 4 times

OSHA requires scaffolds to be designed, constructed, and loaded so they can support their own weight plus at least four times the maximum intended load.

Which hazard control method is considered most effective in the hierarchy of controls?

Answer: Elimination

Elimination—physically removing the hazard—is the most effective control measure because it completely removes the source of the hazard from the workplace.

A 'competent person' in OSHA construction standards is defined as someone who can:

Answer: Identify hazardous conditions and has authority to correct them

OSHA defines a competent person as one who is capable of identifying existing and predictable hazardous conditions and has authorization to take corrective measures.

According to OSHA, what minimum illumination level (in foot-candles) is required for general construction areas?

Answer: 5 foot-candles

OSHA's 29 CFR 1926.56 requires a minimum of 5 foot-candles of illumination for general construction areas and excavations.

Which type of fire extinguisher is appropriate for Class C (electrical) fires?

Answer: CO2 or dry chemical extinguisher

CO2 and dry chemical extinguishers are rated for Class C fires because they use non-conductive agents; water conducts electricity and must never be used on electrical fires.

What is the purpose of a 'toolbox talk' (tailgate meeting) in construction safety management?

Answer: To provide brief, focused safety training before work begins

Toolbox talks are short, informal safety meetings held at the worksite to address specific hazards relevant to the day's tasks and reinforce safe work practices.

Under OSHA's Lockout/Tagout standard (29 CFR 1910.147), which energy control procedure requires the use of a lock to secure the energy isolation device?

Answer: Lockout

Lockout uses a physical lock placed on an energy isolation device to prevent re-energization, which is more secure than tagout alone.