- Kinetic – In Motion — Potential – Stored
- Energy stored in machinery – Weights & Springs
- Pistons under pressure – Hydraulic controls
- Hot equipment and fluids can burn you – Very cold fluids can cause injury
- Quick release of compressed gases can freeze your skin
- Energy of Liquids Under Pressure – Pressure can cause equipment to move
- Rapid release can cause injury – Rapid release can cause the ejection of system parts
- Energy of Compressed Gases – Uncontrolled release can cause injury
- Rapid depressurization can create extremely low temperatures
Chemical energy – Some chemicals can:
- Start fires – Cause skin burns – Generate harmful gases, vapors, or fumes
What do these different types of energy have in common? THEY CAN ALL HURT YOU!
OSHA requires workers to be trained to understand the requirements of lockout/tagout. One company was fined $212,000 for not providing that training and ultimately exposing workers to hazardous energy.
- Identify potential sources of hazardous energy release
- Identify method(s) for isolating the energy
- Document procedures for each piece of equipment
Failure to isolate energy before working on equipment or machinery can lead to serious injury or death:
A 28-year old Mechanic sustained fatal injuries while trouble shooting the right front suspension cylinder on the CAT 773E off-highway truck. The accident occurred after he had loosened three bolts on the pressurized suspension cylinder cover assembly and the right front suspension cylinder suddenly collapsed while the victim was working between the top of the truck’s right front tire and the bottom of the right front fender.
The accident occurred when the third and final bolt on the cylinder cover assembly was loosened on the truck’s pressurized suspension cylinder cover assembly releasing the cylinder pressure. The right front suspension cylinder suddenly collapsed while the victim was working between the top of the right front tire and the bottom of the right front fender. In addition, the Cat truck frame was not blocked or secured against motion prior to the three cylinder cover assembly bolts being loosened. The victim was not trained adequately with regard to the hazards associated with the cylinder cover assembly.
CONTROL OF HAZARDOUS ENERGY IS THE LAW!