Hazardous locations are areas where there is a risk of fire or explosion due to the presence of flammable gases, vapors, dusts, liquids, fibers, or flyings. Any product that is intended to be used in an area classified as “hazardous” must be certified with the appropriate Hazardous Location (HazLoc) rating for that environment. The United States & Canada use a Class/Division rating system while the rest of the world uses a Zone rating system.

Selection of the HazLoc rating for your product needs to be a well thought-out process. Unfortunately, there are several common misunderstandings concerning HazLoc ratings that cause manufacturers to make costly mistakes.

Important HazLoc Rating Considerations:

1) The Best Method for HazLoc Success: Choosing the best protection method to achieve your desired HazLoc rating is much easier when determined before starting the product design. This is the best way to maximize your options so you can avoid protection methods that are more expensive to design and manufacture.

2) Custom Products - Area Classification: Your product needs to be suitable for the intended installation, so you need to know the HazLoc rating for the installation site.

3) High Volume Products - Multiple Users: The rating on your product will dictate where your product can be used. If you make a product that could be used by a variety of users, you need to select a HazLoc rating based on all intended uses of your product. This is especially true if your product is portable. Remember that the user is taught to only use properly rated products within a classified area – if your product does not have a suitable rating, it will not be acceptable for the application.

4) Wrong Rating = BIG Penalty: At this point, many manufacturers will do one of two things - select the highest rating to insure the maximum potential market or choose a low rating to make it easier to comply. The worst thing you can do is guess your HazLoc rating. Here’s why:

5) Existing Products – Adding a HazLoc Rating: Sometimes you don’t have a choice and you have to add a HazLoc rating to a product that was not originally designed for HazLoc use. Adding a HazLoc rating to a finished product leads to fewer options and more frustration – but it can be done. In most cases, several protection methods can quickly be eliminated based on the product design and interconnection methods. This leaves few options, but it will provide a clear path to compliance.

Unsure about your HazLoc Design?

Have CertifiGroup Conduct a Preliminary Review to Identify the Best Protection Method for Your Product

CertifiGroup Can Guide your HazLoc Product Compliance & Certify Your HazLoc Product for UL, CSA, ATEX, IECEx

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