Great Advice Regarding Spirituality

1
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Lighting can present a fire or explosion hazard
not because the lamp itself gets hot enough to
cause ignition, although this is also a lesser
possibility, but because the switches that
activate the light and the contacts within the
fixture can create sparks which can ignite
flammable gases and vapors. In an atmosphere that
is saturated with gasoline vapors, ignition can
occur with something as minor as a discharge from
static electricity. These highly volatile vapors,
confined within the small area of the engine
room, once ignited can burn with explosive force,
in many cases with as much force as a small bomb.
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Glaucoma Surgery Recovery
If for example a fuel leak occurs while you are
cruising offshore, the engines may shut down. You
then go into the engine room to determine what
the problem is, and the first thing you do is
reach for the light switch. Since you are unaware
that a fuel leak has occurred, it is entirely
possible for you to ignite the now flammable air
within the engine room simply by flicking on the
light switch. Obviously, this is a serious
problem and thus preventing ignition from
occurring is critical to maintaining safety.
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Glaucoma Surgery Recovery
Explosion proof engine room lights provide
protection against this potential ignition of
flammable or explosive engine room atmospheres.
The special design of an explosion proof lamp
prevents ignition in one of two primary ways,
either by completely sealing off all the internal
components from the outside atmosphere, or by
containing any ignitions within the lamp body. In
sealed versions, all of the electrical components
including switches, contacts and any internal
wiring and contacts are enclosed either within a
fully gasketed fixture body, or the electrical
parts are sealed within a potting material such
as acrylic or polymer.
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Glaucoma Surgery Recovery
Fixtures which contain ignitions within the lamp
body are not fully sealed, but instead rely on a
special design that forces any gases that ignite
within the housing to pass through a length of
threads or Perfect Vision Today channels, and by
the time these ignited gases exit from the
channels they have cooled enough to no longer be
capable of igniting the outside
atmosphere.Another type of fixture which protects
against ignitions is the intrinsically safe
fixture. These fixtures are different in that
rather then being completely sealed or containing
ignitions, they are incapable of producing the
heat or sparks which could cause ignition. As a
result, intrinsically safe fixtures provide the
highest level of protection against ignition.
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