Employee Injured While Clearing Jammed Equipment

A Colorado manufacturing plant experienced a preventable injury after an employee attempted to clear a jam from a production machine without fully shutting down and locking out the equipment.

The machine had stopped during normal operation after material became stuck inside the feed area. To keep production moving, an employee opened an access panel and reached into the machine to remove the jam. While the employee’s hand was inside the danger zone, the machine cycled unexpectedly.

The employee suffered a serious hand injury that required medical treatment and resulted in lost work time.

The incident exposed several safety gaps, including incomplete lockout/tagout procedures, inconsistent training, unclear maintenance responsibilities, and inadequate machine guarding.

What Happened

The plant was operating a production line during a normal shift when one of the machines jammed. The jam stopped production and created pressure to get the line moving again quickly.

An employee who had cleared similar jams in the past approached the machine and opened the access panel. The employee believed the machine was stopped and safe because the line was not actively moving.

However, the machine had not been de-energized, locked out, or verified as safe. Stored energy and automatic cycling hazards were still present.

As the employee reached into the feed area to remove material, the machine activated unexpectedly. The employee’s hand was caught between moving components.

A supervisor stopped the line and emergency procedures were initiated.

Key Contributing Factors

The injury was not caused by one action alone. Several preventable conditions contributed to the incident.

First, the employee did not perform lockout/tagout before reaching into the machine. The equipment was stopped, but it was not isolated from its energy sources.

Second, the plant did not have a clear written procedure for clearing jams. Employees had developed informal methods that were faster but unsafe.

Third, the machine’s guarding system allowed access to a hazardous area without fully preventing startup or movement.

Fourth, production pressure influenced decision-making. The employee was trying to restart the line quickly instead of following a controlled shutdown process.

Fifth, training was inconsistent. Some employees understood that full lockout/tagout was required for maintenance, but they did not recognize jam clearing as a task that could require lockout/tagout.

Potential OSHA Concerns

This type of incident can raise several OSHA concerns, including:

Failure to control hazardous energy during servicing or maintenance

Inadequate lockout/tagout procedures

Insufficient employee training on hazardous energy control

Machine guarding deficiencies

Failure to protect employees from points of operation, ingoing nip points, rotating parts, and other moving components

Lack of documented inspections or periodic reviews of lockout/tagout procedures

Even when a task is routine, OSHA may consider it servicing or maintenance if an employee must bypass guards, place part of their body into a danger zone, or be exposed to unexpected machine movement.

Corrective Actions

After the incident, the company implemented corrective actions to reduce the chance of recurrence.

A written lockout/tagout procedure was developed for each affected machine.

Jam-clearing tasks were reviewed to determine when full lockout/tagout is required.

Employees were retrained on the difference between normal production tasks and servicing or maintenance tasks.

Supervisors were trained to enforce shutdown procedures, even when production is delayed.

Machine guarding was evaluated to determine whether access panels, interlocks, barriers, or other controls needed improvement.

Authorized employees were identified and trained for lockout/tagout responsibilities.

Affected employees were trained not to open panels, bypass guards, or reach into equipment unless proper procedures are followed.

Periodic inspections were scheduled to confirm lockout/tagout procedures are being followed correctly.

Lessons Learned

This incident shows why “the machine is stopped” does not mean “the machine is safe.”

Manufacturing equipment can contain electrical, pneumatic, hydraulic, mechanical, thermal, gravity, and stored energy hazards. If those energy sources are not isolated and verified, employees may still be exposed to unexpected startup or movement.

Jam clearing is one of the most overlooked high-risk tasks in manufacturing. Because jams happen frequently, employees may treat them as routine production issues instead of hazardous energy control events.

The most important lesson is that any task requiring an employee to bypass guarding, open an access panel, or place a body part into a machine’s danger zone must be carefully evaluated. Speed cannot replace control of hazardous energy.

Recommended Prevention Measures

Develop written lockout/tagout procedures for each machine.

Identify which tasks require full lockout/tagout, including jam clearing, cleaning, adjustment, maintenance, and troubleshooting.

Train authorized employees on proper shutdown, isolation, lock application, stored energy release, and verification.

Train affected employees to recognize when they are not permitted to service or access equipment.

Review machine guarding to ensure employees are protected from moving parts.

Use interlocked guards where appropriate.

Post clear instructions near equipment for jam clearing and emergency shutdown.

Perform periodic lockout/tagout inspections and document findings.

Make supervisors responsible for enforcing procedures during production pressure.

Investigate all near misses involving jams, bypassed guards, unexpected movement, or equipment access.

How Colorado Safety & Compliance Can Help

Colorado Safety & Compliance helps manufacturing companies identify hazards before they become injuries, citations, or shutdown events.

For manufacturing facilities, CSC can assist with machine guarding assessments, lockout/tagout procedures, employee training, job hazard assessments, corrective action plans, OSHA documentation, and compliance audits.

A strong safety system does not slow production down. It prevents injuries, protects employees, reduces liability, and keeps operations running with fewer disruptions.