What Face Shield Do?
We talk a lot about eye safety and eye protection when dealing with hazards like sparks, debris, or splashing chemicals, and focus on safety glasses and goggles as an important part of our personal protective equipment (PPE). Our eyes are easily damaged, and becoming blinded from a work injury has significant repercussions for the injured employee.
On protecting our eyes, let’s not lose sight of the fact that more than just our eyes need to be protected. Many tasks require the use of face shields too.
They provide additional protection for our eyes, and also the rest of our face as well. With that said, there are some things that we need to understand about what face shields can and cannot do.
When properly used as part of a workplace injury prevention program, face shields provide additional protection against some impact hazards, or things flying into our faces.
Pay attention to the word ‘additional,’ though; when used, OSHA does not consider face shields to be enough protection for impact hazards like flying fragments or objects, large chips, or particles.
To protect an employee from those hazards, a face shield must be used with safety glasses or safety goggles. That’s right – 2 layers of protection. And if you think about it, it seems reasonable – the face shield can slow or even stop a flying hazard before it even reaches your glasses, which are within an inch of your eye. That’s a little close for comfort.
A big part of why a face shield isn’t enough on its own, though, is that it doesn’t sit as close to your face or eyes, and so there is still potential for something to fly under the shield and injure your eyes. When combined with safety glasses or goggles, a face shield provides an important additional layer of protection not just for your eyes, but also protects the rest of your face from burns, cuts, or even exposures to toxic or caustic chemicals.
Selecting Face Shields
Like other PPE, we need to select the right face shield for the task at hand. To do that, we need to understand what kind of protection is required, and how it will interact with other required PPE used for workplace injury prevention.
One of the most important decisions comes down to selecting the right type of window (also called a visor) on the face shield. Many are available in different types of plastic or plastic-like materials. These often provide excellent visibility for the worker, are usually lightweight (reducing the strain on the worker’s head and neck), and can even be ANSI rated for impact protection.
The materials don’t all function the same, though. Some of these materials are more scratch resistant than others. Some provide adequate protection against specific chemical exposures, whereas others may provide none, or worse, might interact with specific chemicals in dangerous ways.
Keep that in mind when selecting face shields to protect against chemical splashes, and make sure to consult your safety data sheets for the chemicals that you use to make sure that your face shields are made of the right materials.
Plastic or plastic-like materials aren’t necessary, or even ideal, for all tasks though. Steel and nylon mesh windows are also available, protecting workers against impacts from larger objects. They won’t provide the same level of protection against dusts, fumes, and vapors, though, as they do not form a solid shield, allowing dusts and vapors to pass through the mesh. That same mesh design allows for even greater airflow for the worker, which can be particularly useful when working outside in the heat.
Other required PPE can also affect what types of face shields are appropriate. One common type is attaches to hard hats, allowing employees to wear adequate head protection. When hard hats are not required, face shields are also available as adjustable headgear.