Can an e-STOP be used for lockout?
Control system devices such as stop buttons and emergency stop devices are not accepted as energy isolating devices and cannot be used for this purpose, although they may be used as part of the HECP shutdown procedure leading up to the physical isolation of the hazardous energy sources.
What does lock out mean in electrical?
Lockout/tagout (LOTO) is a set of procedures that are used to ensure that equipment is shut down, inoperable, and (where relevant) de-energized. This allows maintenance and repair work on the system to be performed safely.
What is the purpose of lock out?
Lock out, tag out (LOTO) is a safety procedure used in industry and research settings to ensure that dangerous machines are properly shut off and not able to be started up again prior to the completion of maintenance or repair work.
Can interlocks be used for LOTO?
By using standard safety-rated devices – such as interlock gates and e-stop buttons – a plant manager can achieve safe, reliable machine access that replaces standard LOTO procedures without violating OSHA requirements.
Does OSHA require emergency stops?
According to OSHA, ANSI and relevant ISO regulations every machine is required to have a means to immediately remove all hazardous energy in the event of an emergency. In most all industrial machines this is achieved by the use of an Emergency Stop (E-Stop) pushbutton.
Is a machine block an energy isolating device?
Energy-isolating device: A mechanical device that physically prevents the transmission or release of energy, including but not limited to the following: A manually operated electrical circuit breaker; a disconnect switch; a manually operated switch by which the conductors of a circuit can be disconnected from all …
How important is locking out and tagging of equipment?
An effective lockout/tag out program will help prevent: Contact with a hazard while performing tasks that require the removal, by-passing, or deactivation of safeguarding devices. The unintended release of hazardous energy (including stored energy).
What is an alternative to lockout tagout?
Some acceptable alternative measures include specially designed tools, remote devices, interlocked barrier guards, local disconnects, or control switches which are under the exclusive control of the employee performing the minor servicing.
Where are e stops required?
E-Stop devices shall be located at each operator control station and at other locations where the initiation of an E-Stop can be required. NFPA 79 is a North American electrical standard for industrial machinery. The part of the actuating system that is actuated by a part of the human body.