Safety Flashcards

What is the correct ladder setup angle (ratio) for a straight or extension ladder?

Answer: 1:4 ratio (base to height)

The correct setup angle for a straight or extension ladder is a 1:4 ratio — for every 4 feet of height, the base should be 1 foot away from the support structure. This creates approximately a 75-degree angle, providing optimal stability.

Under Canadian OHS regulations, what must be done before excavation work begins?

Answer: Underground utilities must be located and marked, and the excavation must be planned for soil type and depth

Before excavation, underground utilities must be located by calling the provincial one-call service (e.g., Ontario One Call, BC One Call). The excavation must be planned considering soil type, depth, water conditions, and shoring or sloping requirements.

What is a Joint Health and Safety Committee (JHSC) and when is one required?

Answer: A worker-employer committee; required when a workplace regularly employs 20 or more workers

A JHSC is a committee composed of both worker and employer representatives that identifies workplace hazards and recommends solutions. Most provinces require a JHSC when a workplace regularly employs 20 or more workers.

What is the maximum weight a worker should lift manually according to Canadian ergonomic guidelines?

Answer: 23 kg (51 lbs)

Canadian ergonomic guidelines generally recommend a maximum manual lifting weight of approximately 23 kg (51 lbs) under ideal conditions. Factors such as lifting frequency, posture, distance, and grip may reduce this limit significantly.

What is a toolbox talk (tailgate meeting) in Canadian construction safety?

Answer: A brief daily or weekly safety meeting discussing specific hazards relevant to the day's work

A toolbox talk is a short, focused safety meeting (typically 5-15 minutes) held on site to discuss specific hazards, safe work procedures, and safety concerns related to the day's work activities. It keeps safety awareness current and relevant.

Under Canadian regulations, what are the three worker rights known as the 'three rights' of occupational health and safety?

Answer: Right to know, right to participate, and right to refuse unsafe work

The three fundamental worker rights in Canadian OHS legislation are: the right to know about workplace hazards, the right to participate in health and safety activities (through JHSC or health and safety representative), and the right to refuse work they believe is unsafe.