Chemical Engineering March 2017 - 56

Feature Report
Eye Protection, Part 2
How to Avoid Fogging
A look at the hidden dangers of lens fogging and how to prevent them
Phil Johnson
Honeywell Safety and
Productivity Solutions
IN BRIEF
FACTORS THAT CAUSE
FOGGING
IMPACT ON SAFETY
IMPACT ON
PRODUCTIVITY
THE COST OF
NONCOMPLIANCE
ANTI-FOG SOLUTIONS
DIFFER WIDELY
ANTI-FOG TECHNOLOGY
SELECTING ANTI-FOG
EYEWEAR
F
ogging is the number one problem
faced by safety eyewear users in the
chemical process industries (CPI;
Figure 1). Across applications, both
indoors and out, the environments where
CPI workers conduct daily tasks are demanding.
Fogging on untreated lenses is
nearly impossible to avoid.
Lens fogging might seem like no big
deal. But maintaining a clear, fog-free view
is
vital to the wellbeing of CPI workers
and employers alike. When tasks are conducted
with fog-obscured vision, workers
risk not only eye injury but also bodily
harm. It takes seconds - or less - for a
potentially catastrophic event to occur: a
slip or fall; getting struck by equipment or
caught in machinery; or coming into contact
with harmful chemicals or electrical
current. Productivity and compliance are
at serious risk, too.
With so much at stake, it's easy to see
why employers seek effective anti-fog solutions,
and why eyewear manufacturers
56
strive to develop longer-lasting
anti-fog
coatings. But not all anti-fog-coated lenses
deliver the same level of protection or consistency,
and until now lenses with anti-fog
coating didn't necessarily stand up to the
demands of the workplace.
Recent innovations in anti-fog lens coatings
have dramatically improved performance.
This article examines the dangers
and costs of fogging and the differences
among anti-fog lens coatings, to help guide
safety managers in selecting those that deliver
the consistent, long-lasting results required
to keep workers safe and productive,
and to support employers' bottom lines.
Factors that cause fogging
Lenses fog due to several factors, all of which
are related to temperature and humidity.
Environmental heat and humidity. The
most obvious reason for fogging is a hot or
humid (or both) environment. Whether workers
are outdoors in sticky summer conditions
or inside a steamy boiler room or food
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
MARCH 2017
Headaches due to comfort, fit
Not stylish/cool enough
Visual distortion/headaches
Lens scratch too easily
Fogging
FIGURE 1. Fogging is the main problem faced by safety
eyewear users in the chemical process industries

http://WWW.CHEMENGONLINE.COM

Chemical Engineering March 2017

Table of Contents for the Digital Edition of Chemical Engineering March 2017

Contents
Chemical Engineering March 2017 - Cover1
Chemical Engineering March 2017 - Cover2
Chemical Engineering March 2017 - Contents
Chemical Engineering March 2017 - 2
Chemical Engineering March 2017 - 3
Chemical Engineering March 2017 - 4
Chemical Engineering March 2017 - 5
Chemical Engineering March 2017 - 6
Chemical Engineering March 2017 - 7
Chemical Engineering March 2017 - 8
Chemical Engineering March 2017 - 9
Chemical Engineering March 2017 - 10
Chemical Engineering March 2017 - 11
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Chemical Engineering March 2017 - 17
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Chemical Engineering March 2017 - Cover3
Chemical Engineering March 2017 - Cover4
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