Face Fit testing basics

Introduction

Where RPE is used, it must be able to provide adequate protection for individual wearers. RPE can't protect the wearer if it leaks. A major cause of leaks is poor fit – tight-fitting facepieces need to fit the wearer’s face to be effective.
As people come in all sorts of shapes and sizes it is unlikely that one particular type or size of RPE facepiece will fit everyone. Fit testing will ensure that the equipment selected is suitable for the wearer.

What you need to do

The best time to do fit testing is at the initial selection stage, when individual users can be given a choice of adequate models of RPE. You should ensure that the make, model, type and size of facepiece that they wore when they had their successful fit test is made available for their use. If an employee wears more than one type of tight-fitting facepiece, then each type of facepiece should be fit tested.
Face Fit Testing is designed to protect workers from harmful chemicals and dust, which can account for up to 13,000 deaths each year. These deaths include work-related lung disease and cancer, which Respiratory Protective Equipment (RPE) has been designed to protect against.
However recent research indicates that up to 50% of all RPE does not offer the wearer the level of protection assumed, meaning that people could be falling ill and dying for something as simple as not carrying out a face fit test.

How to do it

A Qualitative Face Fit Test can help to ensure that employees are able to work effectively in their masks, without taking unnecessary health risks. It also means that employers won't have to face the prospect of expensive enforcement action being taken by the HSE if their workers masks don't offer adequate protection.

A note on facial hair:

Many masks rely on a good seal against the face so that, when you breathe air in, it is drawn into the filter material where the air is cleaned. If there are any gaps around the edges of the mask, ‘dirty’ air will pass through these gaps and into your lungs. It is therefore very important that you put your mask on correctly and check for a good fit every time.
Facial hair – stubble and beards – make it impossible to get a good seal of the mask to the face.
If you are clean-shaven when wearing tight-fitting masks (ie those which rely on a good seal to the face), this will help prevent leakage of contaminated air around the edges of the mask and into your lungs. You will therefore be breathing in clean air, which will help you stay healthy.
If there are good reasons for having a beard (eg for religious reasons), alternative forms of RPE, that do not rely on a tight fit to the face, are available.
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