HWP-50E Hot Wire Process
3
3. Keepcylinders away fromanyweldingor
other electrical circuits.
4. Never weld on a pressurized cylinder -
explosion will result.
5. Use only correct shielding gas cylinders,
regulators,hosesand fittings designed for
the specific application; maintain them
and associated parts in good condition.
6. Turn face away from valve outlet when
opening cylinder valve.
7. Keep protective cap in place over valve
except when cylinder is in use or
connected for use.
8. Read and follow instructions on
compressed gas cylinders, associated
equipment, and CGA publication P-1
listed in Safety Standards.
F. Welding
Welding can cause fire or explosion.
Welding on closed containers, such as tanks,
drums, or pipes, can cause them to blow up.
Sparks can fly off from the welding arc. The
flyingsparks,hotworkpiece,andhotequipment
can cause fires and burns. Accidental contact of
electrode to metal objects can cause sparks,
explosion, overheating, or fire. Check and be
sure the area is safe before doing any welding.
1. Protect yourself and others from flying
sparks and hot metal.
2. Do not weld where flying sparks can
strike flammable material.
3. Remove all flammables within 35 ft (10.7
m) of the welding arc. If this is not
possible, tightly cover them with
approved covers.
4. Be alert that welding sparks and hot
materials from welding can easily go
through small cracks and openings to
adjacent areas.
5. Watch for fire, and keep a fire
extinguisher nearby.
6. Do not weld on closed containers such as
tanks, drums, or pipes, unless they are
properlypreparedaccording to AWSF4.1
(see safety Standards).
7. Connect work cable to the work as close
to the welding area as practical to prevent
welding current traveling long, possibly
unknownpathsandcausingelectricshock
and fire hazards.
8. Wearoil-free protectivegarmentssuch as
leather gloves, heavy shirt, cuffless
trousers, high shoes, and a cap.
G. Moving Parts
Moving parts, such as fans, rotors, and belts can
cut fingers and hands and catch loose clothing.
1. Keepalldoors,panels,covers,andguards
closed and securely in place.
2. Have only qualified people remove
guards or covers for maintenance and
troubleshooting as necessary.
H. EMF Information
Considerations About Welding and the
Effects of Low Frequency Electric and
Magnetic Fields
The following is a quotation from the General
Conclusions Section of the U.S. Congress,
Office of Technology Assessment, Biological
Effects of Power Frequency Electric &
MagneticFields-Background Paper,OTA-BP-
E-53 (Washington, DC: U.S. Government
Printing Office, May 1989):
".... there is now a very large volume of
scientific findings based on experiments at the
cellular level and from studies with animals and
people which clearly establish that low
frequencymagneticfields caninteractwith, and
produce changes in, biological systems. While
most of this work is of very high quality, the
