Machine guarding: why it matters
In June of 2022, a steel manufacturer lost a worker to the dangerous grip of a bar straightening machine. The Canton, OH, company was cited for failing to install guards or provide proper hand tools to employees that would have prevented this fatal accident. The two willful and two serious violations had proposed penalties of $315,952.
OSHA concluded the worker was operating the machine when he was caught on a piece of steel bar stock that was rotating at high speeds. The entanglement resulted in fatal injuries. Inspectors discovered the hooks provided to employees for manipulating steel bars were too short, requiring the worker’s hands to enter the danger zone of the bar straightener.
Further, OSHA inspectors noted machinery had previously been altered to add a mechanical feed roll unit, which was intended to eliminate the need for employees to manually handlebar stock. Unfortunately, the plan for this machine was canceled. Previous machine alterations proved the employer had identified the exposure of workers to harm but failed to protect them properly. As a result, this employee’s limbs were pulled into rotating machinery.
Guard your workers
Employers are responsible for identifying and mitigating workplace hazards to provide a safe workplace. Machine guarding is especially important for high-risk activities. These include, but are not limited to:
- Roll-forming/bending machinery
- Power presses/brakes and drill presses
- Conveyors
- Meat grinders and slicers
- Grinders, shears, and saws
- And yes, the office paper cutter
Perform hazard assessments to determine worker exposure to hazards. Focus on the relationship between workers and the equipment they operate, the tools they use, and the tasks they perform. When determining the proper safeguards, special emphasis should be given to activities such as maintenance or service work.
Protection from hazards associated with this dangerous equipment includes consistent use of guards and safety devices. Guards provide physical barriers to dangers while safety devices, such as lasers or light curtains, help prevent contact with hazardous points of operation, pinch points, and moving parts. Employees are at the greatest risk of injury or entanglement during:
- Machine or equipment set-up
- Inspection of machinery and equipment
- Clearing jams
- Adjusting machinery
- Cleaning, lubricating, or servicing machinery
- Normal operations
Machine guarding requirements are simple when you remember this: any machine part, function, or process that can potentially cause injury to an employee must be safeguarded. And don’t forget, a hazardous energy control (lockout/tagout) program must also be developed to supplement machine safeguarding efforts.
Machine guarding doesn’t just send workers safely home to their families, it offers safer work practices and reduces workers’ compensation costs. Because workers understand their safety is important, their motivation and morale improve, leading to greater productivity.
Key to remember
You can help prevent workplace injuries and fatalities by observing workplace operations and identifying hazards associated with machinery and equipment. Perform a hazard assessment to determine employee exposure, then mitigate these risks with proper machine guarding.