About
hydrogen sulfide
Hydrogen sulfide is a chemical compound created by the decomposition
of metal sulfides and organic matter. Characterized by its unique "rotten
egg" odor, hydrogen sulfide is encountered in petroleum and other
drilling operations, mining, sewers or any other endeavor that takes
workers underground. In addition to the hydrogen sulfide which occurs
naturally, about 10 million tons are produced each year in North America
for use in various manufacturing processes.
Hydrogen
sulfide is a poisonous gas which can paralyze the respiratory system,
quickly leading to death. It is also a flammable gas, which will ignite
explosively when exposed to heat, flame or oxidizers. For these reasons,
hydrogen sulfide is classified as a hazardous material. Workers who
encounter hydrogen sulfide must be well trained in its hazard characteristics
and safe work practices, and emergency responders who must respond
to an incident involving this chemical need to be trained in proper
response tactics.
About
the film
"Hydrogen
Sulfide," eighth in the multi award-winning HazChem
series of emergency response and right-to-know training videos, tells
where hydrogen sulfide is likely to be found and teaches basic safety
procedures for working with this hazardous chemical. It warns that
odor cannot always be relied on to detect hydrogen sulfide, describes
symptoms of exposure, and tells about the short- and long-term health
effects of contact.
The film
discusses safe handling, storage and transportation of H2S, covering
protective clothing, continuous monitoring, safety alarms, containers,
markings, and loading and unloading procedures. It also stresses the
need for safe piping systems that will be compatible with this aggressive
chemical, as well as the need to constantly control all possible ignition
sources.
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A
case study of an actual hydrogen sulfide incident involving over 300
response personnel and lasting 68 days is examined. Smaller, more common
incidents are also discussed, and typical reasons for these incidents
are outlined. Responders are taught that during an emergency involving
a leak or a spill, proper respiratory protection is mandatory, and the
risk of vapor ignition is constant.
The film
teaches the incident commander what he needs to know to make a decision
about whether to take aggressive action to control an incident, especially
in incidents involving fire. Other topics covered include evacuation,
medical operations for breathing and non-breathing victims, ventilating
to reduce vapors, use of water fog to disperse or direct vapors, neutralizing
water spills, reducing the threat of container failure, controlling
runoff, cleanup operations,and decontamination. The need for continuous
air monitoring throughout the entire incident including cleanup is
stressed. (27 minutes)
About
the HazChem Series
Each film in the HazChem Series focuses on a different
product or group of products. Programs combine footage of actual incidents
with action-packed, realistic training sequences. The films are designed
to provide training to persons who are expected to respond to an emergency
involving these hazardous materials.
HazChem
films have been the winners of numerous awards for both filmmaking
excellence and technical content. Among the honors received by HazChem
programs are the prestigious Cine Golden Eagle award, the Society
for Technical Communication Award of Excellence, the Telly Award,
and the Silver Apple Award from the National Education Film and Video
Festival.
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