ASSP Z244.1-2016 (R2020) PDF Download

The purpose of the ASSP Z244.1-2016 (R2020) standard is to provide guidelines for effectively managing and controlling hazardous energy. This standard is applicable to machines, equipment, and processes that have the potential to cause harm to personnel.

The standard emphasizes the use of lockout as the primary method for controlling hazardous energy. Lockout involves physically isolating the source of energy by using locks, keys, and other devices to ensure that the equipment cannot be energized during maintenance, repair, or servicing activities.

In cases where lockout is not feasible, tagout can be employed. Tagout involves using clearly visible tags or labels to warn personnel that the equipment is not to be energized. However, tagout alone is not as effective as lockout and should only be used as an alternative when lockout cannot be implemented.

The standard also allows for the use of alternative methods for controlling hazardous energy. These methods must be equally effective in ensuring the safety of personnel and should be based on a risk assessment. Alternative methods may include the use of special procedures, tools, or equipment that neutralize or isolate the energy source, allowing work to be performed safely.