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VHS English Version Product Number: 1012HEVHS
DVD English Version Product Number: 1012HEDVD
List Price: $99.95
Length of Video(in Minutes): 14
Publisher: Digital-2000, Inc.
Description: When using fuel gas welding and cutting, safety is an integral part of any operation. Program explains cylinder connections, valves, cracking, and basic safety procedures when using fuel gas welding and cutting.
Excerpt: When you're working with gas welding, and cutting operations
there are a number of safety procedures to follow. Each company is responsible
for developing specific guidelines, policies, and procedures as a short video
training program cannot list all the potential hazards or safety elements. This
program is simply a guideline of basic safety measures designed as safety
awareness, but it's not a complete or comprehensive program.
Let's begin with
the area used for such operations. The welding or cutting area must be
protected against fire hazards posed by combustible and flammable materials.
Combustibles must be located at least 35 feet from the worksite. If this is not
possible combustibles must be protected with flame proof covers, or metal, or
other fireproof shielding. Floors on which combustible materials such as paper
clippings, wood shavings, or textile fibers accumulate must be swept clean for
a radius of 35 feet. Keep in mind that welding temperatures are extremely high
and welding on metal can create heat transfer from the metal part to
combustible materials located nearby. Welding operations have caused a high
number of major fires. Due to the potential for fires, explosions, and health
hazards, cutting or welding must be carefully controlled. Never weld or cut in
the presence of mixtures of flammable gases, vapors, liquids, or dusts with
air, or inside improperly cleaned tanks or equipment which had previously
contained such material. Never weld or cut near large quantities of exposed,
readily ignitable material, such as bulk sulfur, baled paper, or cotton. Never
weld or cut near vapor degreasing operations, or spray booths due to the
potential fire hazards. Some chemicals can decompose under the ultraviolet
radiation of the welding or cutting operation and become quite dangerous.
Always weld and cut in those areas authorized by management. Protection in the
form of curtain or enclosures is required when other persons could be harmed by
the effects of the flying slag, or eye hazards.
Most gas welding and cutting
operations use compressed gas cylinders and there are important procedures to
follow when using these gas cylinders. All cylinders stored inside must be
located in a well-protected, well-ventilated dry location. They must be at
least 20 feet from highly combustible materials, sparks, open flames, excessive
heat, and away from elevators, stairs, or gangways. When cylinders are not
connected for use valve protection caps must be in place unless the cylinder is
not designed to accept the cap. Stored oxygen cylinders must be separated from
stored fuel cylinders or combustible materials, especially oil or grease by at
least 20 feet, or by a non-combustible barrier. This barrier must be at least 5
feet high and have a fire resistance rating of one half hour. All cylinders
must be legibly marked to identify their contents. Cylinders connected for use
must be latched or chained to prevent them from falling over. Be careful that
cylinders are not placed so as to become part of an electrical circuit. Mark empty
tanks MT, close the valves, and replace valve caps securely. Let's take a look
at the valve and regulator settings. The regulator is a delicate piece of
equipment, and must be carefully handled at all times. Pipe wrenches or pliers
must not be used for attaching regulators to cylinders. Use an end-wrench of
proper size. Leave the valve wrench on the acetylene cylinder whenever the
valves are open. This permits emergency shut off of the gas. Hammers or
wrenches must not be used to open or close cylinder valves that are fitted with
hand wheels. If a regulator creeps have it repaired immediately. Creeping of a
regulator is indicated by a gradual increase in pressure after the torch valves
are closed. Hoses showing leaks, burns, or worn places must be replaced or
repaired. Hoses should be color-coded to avoid accidental mixing of the gases.
You can see in this graphic the green hose is for oxygen, and it has a right
hand thread. The red hose is acetylene.
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