Methods Of Reducing Emissions; Mains Supply; Section 1; Introduction - USAG 998 140A Manual Del Usuario

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Assessment of area
Before installing welding equipment the user shall make an assessment of potential electromagnetic problems in the
surrounding area. The following shall be taken into account:
a) Other supply cables, control cables, signaling and telephone cables above, below and adjacent to the welding equipment;
b) Radio and television transmitters and receivers;
c) Computer and other control equipment;
d) Safety critical equipment, e.g. guarding of industrial equipment;
e) The health of the people around, e.g. the use of pacemakers and hearing aids;
f) Equipment used for calibration or measurement;
g) The immunity of other equipment in the environment. The user shall ensure that other equipment being used in the
environment is compatible. This may require additional protection measures;
h) The time of the day that welding or other activities are to be carried out.
The size of the surrounding area to be considered will depend on the structure of the building and other activities that are
taking place. The surrounding area may extend beyond the boundaries of the premises.

METHODS OF REDUCING EMISSIONS

Mains supply

Welding equipment should be connected to the mains supply according to the manufacturers recommendations. If
interference occurs, it may be necessary to take additional precautions such as filtering of the mains supply. Consideration
should be given to shielding the supply cable of permanently installed welding equipment, in metallic conduit or equivalent.
Shielding should be electrically continuous throughout its length. The shielding should be connected to the welding power
source so that good electrical contact is maintained between the conduit and the welding power source enclosure
.
Maintenance of the welding equipment
The welding equipment should be routinely maintained according to the manufacturers recommendations. All access and
service doors and covers should be closed and properly fastened when the welding equipment is in operation. The welding
equipment should not be modified in any way except for those changes and adjustment covered in the manufacturers
instructions. In particular, the spark gaps of arc striking and stabilizing devices should be adjusted and maintained according
to the manufacturers recommendations.
Welding cables
The welding cables should be kept as short as possible and should be positioned close together, running at or close to the
floor level
.
SECTION 1 --- SAFETY

1.1 INTRODUCTION

Arc welding processes as developed after many years of welding experience can be used with a high degree of safety
provided that proper care and attention is given to common sense practices and to manufacturer's recommended methods.
It is therefore imperative that management and safety personnel make sure that all personnel who will operate or maintain
the welding equipment be given the opportunity to read this information.
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