OSHA 10-Hour Construction ReviewFocus Four HazardsMedium
A worker is using a portable electric circular saw to cut lumber on a construction site. The saw's lower blade guard appears to be stuck in the open position, exposing the blade. What is the immediate action the worker should take?
- AAsk another worker to hold the guard closed while operating.
- BContinue using the saw cautiously to finish the cut.
- CAttempt to manually free the guard with a tool.
- DImmediately stop using the saw and tag it 'out of service'.
Show answer & explanationAnswer & explanation
Correct answer: D. Immediately stop using the saw and tag it 'out of service'.
A malfunctioning blade guard on a circular saw creates an immediate and severe 'caught-in/between' hazard, as well as a 'struck-by' hazard from flying debris. The saw must be taken out of service immediately and tagged to prevent further use until repaired.
Why the other options are wrong
- A. This is highly unsafe and puts both workers at severe risk of injury.
- B. Using a saw with a malfunctioning guard is extremely hazardous and violates safety protocols.
- C. Attempting to repair a stuck guard while it's still connected to power is dangerous.
Circular Saw Guard Malfunction
A circular saw with a stuck or non-functioning blade guard poses an immediate and severe hazard, requiring the tool to be taken out of service.
- Blade guards protect against accidental contact and flying debris.
- A malfunctioning guard creates a 'caught-in/between' hazard.
- Defective tools must be removed from service and tagged.
Memory trick: Broken tool, broken rule, pull it quick, don't be a fool!