When galvanized metal is being welded, the fumes may contain
zinc oxide from themetallic coating and unless its inhalation is
prevented, a feeling of chill with shiveringand perspiring may
follow.
This is known as MET! "#ME "E$E%. The effects are usually acute
and transitory,coming on a few hours after the fumes have been
inhaled and passing off completely in&' hours.
(iven proper planning, there is no reason why these cases should
occur at all.)rovision should always be made for the removal of
fumes by mechanical means. Thisis best achieved by using localized
exhaust ventilation where an elongated hood isplaced near to the
seam being welded.
nother practical method is to use an air mover.
*ne of these two methods should always be used when work is
taking place inside. *noutside work, some dilution of the fume is
already taking place but reliance on the windfactor is not always
sufficient.
%espiratory protection need only be worn when mechanical
ventilation cannot be used.
