When designing your PPE program, how do you know which option will work best for your application? How can you get the most for your money? How can you get no-cheating compliance from your workers? With so many arc-rated (AR) and flame-resistant (FR) PPE products on the market, it can be difficult for a utility or utility contractor to make a sound decision. To start, complete an analysis to determine hazard levels, as well as the workers who will be exposed. Application, comfort and cost should be considered when deciding on the best product to purchase. In this article, we will help you see how to maximize your AR and FR gear. The process begins with making a choice that makes sense for your company and your application, and then you will need to know how to care for the PPE so you can get the most from your money and extend the equipment’s lifespan.
Application and Comfort
While there have long been arguments and marketing claims about the superiority of either treated or inherent fibers used for FR and AR clothing, the truth is that both can work well from a protection standpoint, and both have a place in the market. Determining which one to use depends on the application and properties the end user needs.
For instance, aramids are durable and can work well with exposure to certain acids and bases – as an example, para-aramid is sensitive to chlorine bleach, mineral acids and UV, but these do not affect its flame resistance – yet pure aramids do not work well with regard to molten metal hazards because molten metal sticks to the fabric. However, there are several aramid blends that work well with molten metal. Modacrylics are great for chemical resistance, but the fiber has a high amount of shrinkage in a thermal exposure and doesn’t pass some of the small-scale tests for flash fire unless blended. Cottons and a similar, regenerated cellulose FR fiber known as FR rayon are breathable, soft and relatively inexpensive, yet they do not perform well in acid exposures. They also have fair colorfastness, meaning that their colors can fade with exposure to light and laundering.