Module 3.4: Blocking and Securing Mechanical Components 

Blocking and Securing Mechanical Components teaches you how to safely prevent unexpected movement of machinery parts during maintenance or servicing. The module covers techniques for restraining stored mechanical energy, such as using blocks, pins, or other supports, to protect workers from injury. Understanding these methods is critical for maintaining a safe work environment whenever mechanical energy is present.

• Mechanical blocks and pins prevent unintended rotation or movement of machinery components.

• Chaining or securing elevated loads protects against gravity-related hazards.

• Restraining springs or tensioned components reduces stored mechanical energy risks.

• Equipment must be properly blocked before removing energy sources for service.

• Only trained and authorized personnel should apply and remove blocking devices.

This video explains the various blocking and securing procedures.