In a Pinch


We take them for granted - the machines that complete production tasks with greater speed, accuracy and efficiency than any manual method ever could. Machinery reduces the physical demands of work and for the most part, the risk of personal injury is greatly reduced. 

However, there is a down side to using machinery. Though the benefits are many, machines also expose workers to potentially dangerous moving parts. 

Any machine part or process, which could cause injury, must have safe-guards to prevent that exposure. 


    Hazardous Locations On Machines

    Many pinch points cannot be removed, but if you are constantly alert you can protect yourself from injuries. Awareness comes in two forms, a common sense alertness of the right thing to do, and training in the correct way to do things and use equipment. Wachs Services JHA (Job Hazard Analyses) and our specific procedures identify activities where pinch-points are prevalent. Always review specific pinch points with anyone who could be exposed prior to a task, and document on our JHA. 

    Dangerous moving parts are typically found in one or more of the following three locations. Some form of safeguarding is needed at these points: 

    • Point of operation: This is the point at which cutting, shaping, boring, or forming of the stock is accomplished. It also includes any other point that creates a hazard when operators insert or manipulate materials during the machine’s operation. A specific example would be the point of operation where a grinder comes into contact with the face of a weld. 
    • Power transmission apparatus: This includes all moving components of the mechanical system that deliver energy to the area of the machine that performs the work. Examples include flywheels, pulleys, belts, connecting rods, couplings, cams, spindles, chains, cranks, and gears. A specific example would be the belt and pulley apparatus of an air compressor. 
    • Other moving parts: This includes all other parts of a machine that move while the equipment is functioning. Examples include reciprocating, rotating, and transverse moving parts. Other examples are feed mechanisms and auxiliary moving parts of the machine. 

    Learn Five Approaches to Machine Guarding in this edition of Wachs Weekly!