Lockout Tagout Hazardous Energy
One of the hazards too often overlooked is associated with stored or potential hazardous energy. Unfortunately, many workers get confused about lockout/tagout because they think it only applies to electrical work - and that can be a grave mistake.
All workers could be exposed to the dangers of hazardous energy. Workers need to be familiar with when lockout/tagout is needed and what to do if they find it in use in the workplace.
Lockout/tagout is required to protect workers from unexpected startup or unexpected release of hazardous energy. Failure to properly lockout and tagout equipment can result in injuries to the workers who are servicing, repairing or adjusting the equipment.
Lockout/tagout may be required with many types of work or tasks, such as:
- Setting up
- Making repairs
There may be several different types of hazardous energy that workers can be exposed to on the job. It is important for all workers to know what hazards could be present in their workplace. Types of hazardous energy include:
- Chemical - chemicals that may be stored in pipes, tanks, and/or held under pressure.
- Pneumatic - trash compactors, compressors, lifting equipment.
- Thermal - extreme heat from heating elements or furnaces or cold energy from refrigeration units or compressed gases.
- Electric - electrical equipment which is either wired or operated by cord and plug.
- Mechanical - stored energy in rotating or moving parts or conveyor belts.
- Other - such as x-ray, radiation, laser, microwave, radio frequency, or others.
Lockout devices are designed to keep the equipment from being turned on or to keep the energy source from being released.
Tagout devices are designed to notify other personnel that the machine, tool, or equipment is being worked on and is unsafe to tamper with in any way.
All employees must know how to recognize when equipment is locked out, tagged out or both. They should be trained to look for tags, signs or locks at startup points, switches, valves and control panels. Lockout/Tagout devices should NEVER be tampered with and no one should ever attempt to bypass a lockout or tagout device. Only personnel that have received specific training and follow the correct procedures are authorized to perform lockout/tagout.
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