You’re an industrial safety professional. You encourage using the right PPE. You know the value of protecting workers from injury — head to toe.
Think about this for a minute: the head is about one-seventh of a body’s total height, but it’s the nerve center for everything done on the job site. Your eyes, your ears, your nose… almost everything you use for sensory input resides there.
But, your head also houses the most important organ in your body: the brain. If damaged, nothing else functions properly. Head protection helps to safeguard this vital organ that’s so important, both on the job and off.
That means choosing the right hard hat for your application is critical.
Types of Hard Hats
When I say “types,” I’m not talking about cap, full brim, or climbing models. Those are styles. Type refers to a standards designation. The current ANSI consensus standard for hard hats is Z891.1-2014.
A Type I hard hat is certified to reduce the impact of blows to the crown or top of the head. If tools, small parts, or other items are dropped from a height (or if you raise up under an obstruction and bang your head), you’re protected.
A Type II hard hat cushions the impact from top of the head blows, but also protects the worker from lateral impact. This is a requirement when working around moving equipment or materials where a side blow is possible.
In Canada, the hard hat standard is CSA Z94.1-15, updated on March 1, 2016. While similar to the ANSI standard, there are some variances in the testing requirements. CSA Type 1 is similar to Type I in the US, and CSA Type 2 resembles the ANSI Type II.
While these two standards are similar, a hard hat certified by one organization doesn’t automatically qualify it for the other. The testing procedures used are specific to each standard.
For example, a hard hat certified by ANSI Z891.1-2014 must also pass the CSA Z94.1-15 standard if it is to be sold to the Canadian market. So, don’t assume the hard hat you purchased in one location or country will be in compliance everywhere you work. Make sure it’s certified and labeled for your location.
Understanding a hard hat’s “Class”
A hard hat’s Class designation is different from its Type. While Type represents impact protection, Class refers to electrical protection. In the past, the electrical class designations were A, B, and C, with A being the highest hazard rating.
However, the Class labels are now E, G, and C. As you’ll see, this labeling system is more intuitive when choosing the right hard hat. The electrical ratings are:
- Class E (electrical, non-conductive) – Intended to reduce the danger of contact with higher voltage conductors, with hard hat test samples proof-tested at 20,000 volts (phase to ground).
- Class G (general, non-conductive) – Intended to reduce the danger of contact with low voltage conductors. Test samples are proof-tested at 2,200 volts (phase to ground).
- Class C (conductive, no electrical rating) – Not intended to protect against electrical hazards and, therefore, are not tested for it.