Cutting technology by abrasive water jet (AWJ) is
ranked among the most important sources of noise, which
is also confirmed by noise analyses of risks evaluation of
the cutting technology through abrasive water jet by a
Failure Models and Effect Assessment Method [1]. From
analyses, the results are that in the production system of
AWJ cutting technology parts and structural nodes with
excessive noisin occur endangering workers mainly
operators, by noise exposure. According to [2] in material
cutting by AWJ with own head tank, noise reached t
values LAeq approximately of 90 dB and in an open space
a noise level can reach up to 110 dB and more. According
to [3-5] and [5] the process of cutting by abrasive water
jet contributes to the production process through a lot of
emergent dangers significantly contributing with their
reactions to the risks creation of AWJ technology. Besides
the noise from AWJ technology also, a background
noise affects the final level of acoustic pressure. The
background noise is a noise or other influence registered
by a measuring instrument also if a noise source which