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Minteq Toolbox Meeting

Minteq Toolbox Meeting. February 2012. E-Stop Training Applicable Standards: Directive 98/37/EC NFPA79(2007) ISO 13850:2006. E-Stop Training. The purpose of an Emergency Stop (E-Stop) is to avert or reduce existing hazards to people, machinery or work in progress

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Minteq Toolbox Meeting

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  1. Minteq Toolbox Meeting February 2012 • E-StopTraining • Applicable Standards: • Directive 98/37/EC • NFPA79(2007) • ISO 13850:2006

  2. E-Stop Training The purpose of an Emergency Stop (E-Stop) is to avert or reduce existing hazards to people, machinery or work in progress To be initiated by a single human action when the normal stopping function is inadequate.

  3. E-stop: Standard • Equipment must be equipped with: • A device to safely and completely stop the machine in normal operations (on/off switch). • Must also be equipped with 1 or more emergency stop device(s) for immediate danger situations.

  4. E-Stop Execution Actuators of emergency stop devices must be colored RED on yellow background Actuator of a push button operated device must be palm or mushroom head type Other types of emergency stop devices include (but are not limited to): Pull cord or push bar operated switches

  5. E-stop Exceptions • Exceptions for use of emergency stop device(s): • When danger is not affected by emergency stop • Hand held or hand-guided machinery

  6. E-stop Operation • Releasing the Emergency stop: • Stop command must continue after releasing emergency stop device(s) • Reset only with appropriate action, machine should not automatically restart • Restart machine: renewed activation or reset

  7. E-stop Operation • Requirements for Emergency stop device (s): • Clearly identifiable, clearly visible and quickly accessible without hazard • Withstand extreme loads to activate • Stop the process as quickly as possible without additional risks; shutdown power • (Possibly) activate additional safeguards • Must not be impaired by measures against inadvertent operation

  8. E-stop Operation • Complex systems (combination of processes): • Stop device(s) including emergency stop device(s) must stop entire process, if continued operations can cause risks. • Emergency stop overrides selector and/or other control device(s)

  9. E-Stop Maintenance Emergency stop devices should be in a location’s Preventative Maintenance (PM) system Consider the need for periodic testing based on the components of the emergency stop frequency or infrequency of use operating conditions operating environment

  10. E-Stop Reminder The emergency stop function shall not be applied as the primary means to de-energize equipment Lockout/tagout still applies Emergency stop should function only as a backup measure to LOTO

  11. E-Stop - Site Examples List and/or pictures of E-Stops in use at your site

  12. Questions?

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