Automation Canada Machine Safety Issue - 17

THE NEW MACHINE SAFETY LIFECYCLE CNT'D.
How to select the right components from the current range of products available in the market? And how to install them correctly on machines for
the different industry types? For example, Automotive, Food & Beverage, Pharmaceuticals, Pulp & Paper, among others.
When we are dealing with machine safety, it is important to note that a complete solution should involve all energy sources and there are two
converging concepts that we must take into account, the Lock out Tag Out and the safety-related control systems. The concept of LOTO (Lock Out
Tag Out) is not simply to install a padlock. LOTO is a program that has to be developed based on standards such as OSHA 1910.147 and ANSI
Z244-1, ISO 14118, among others. We see how many companies misunderstand these requirements, to the point that we see padlocks installed in
electrical cabinets or Emergency Stops, where it is completely unacceptable. According to the standard, the lock must be placed on the device that
controls the energy source, such as the main switch, but notice the standard says " energy source " this doesn't mean only electrical energy, other
energy sources could be, hydraulic, pneumatics, etc. Additional energy sources covered are the remaining or residual energies, which cannot be
controlled with a padlock, for example suspended loads, fluids left in pipes after a shut-off, residual electrical energy in capacitors.

C A N A D I A N A U TO M AT I O N

VOLUME 2, ISSUE 6

17

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Automation Canada Machine Safety Issue

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