MEP S.p.A.
3--8
18
Use and maintenance manual
SHARK 282
Noise level of the machine
Noise can cause hearing damage and represents one the problems faced by many
countries who adopt their own standards. In accordance with the
EEC
MACHINES DIRECTIVE 2006/42/CE
, we are listing the standards that specify
noise levels for machine tools. This chapter also reports the noise levels produced
by the
SHARK 282
during its various operating phases and the methods used for
measuring these levels. The Italian standard governing this aspect is
D.M.n.277/91 drawn from EEC Directives 80/1107, 82/605, 83/477, 86/188, 88/642,
UNI EN ISO 4871 (1998).
Noise level measurement
Noise levels are measured using an instrument known as an Integrator
noise---meter which registers the equivalent continuous acoustic pressure level at
the work station.The damage caused by noise depends on three parameters: level,
frequency and duration. The equivalent level concept Leq combines the three
parameters and supplies just one indication. The Leq is based on the principle of
equal energy, and represents the continuous stationary level containing the same
amount of energy, expressed in dBA, as that actually fluctuating over the same
period of time.This calculation is made automatically by the integrator
noise---meter. The measurements are taken every 60 seconds, in order to obtain a
stabilised value. The reading stays on the display for a sufficient time to enable a
reading to be taken by the operator.Measurements are taken by holding the
instrument at approximately 1 metre from the machine at a height of 1.60 metres
above the platform at the operator’s work station.
Two measurements are taken: the first while the machine operates without cutting
anything, the second while cutting in manual mode.
Noise level values
Identification
Machine type
Band saw for metal applications
Model
SHARK 282
Reference standard
ISO 3746
Results
Test 1st
Description
C 40 steel cut --- pipe 50x82 mm
Bimetal band 2950x27x09 S.GLB Z 5/7
Results
Mean sound level (Leq) 79,65 dB (A)
Environmental correction (K) 3,71 dB(A)
Peak sound power (Lw) 91,27 dB(A)
Test 2nd
Descriprion
C 40 steel cut --- solid rod 150 mm dia. Ø
Bimetal band 2950x27x09 M42 Z 3/4
Results
Mean sound level (Leq) 78,43 dB(A)
Environmental correction (K) 3,71 dB(A)
Peak sound power (Lw) 88,64 dB(A)
Test 3rd
Description
34CND6 material cut ---pipe 140x130 mm
Bimetal band 2950x27x09 S.GLB Z 10/14
Results
Mean sound level (Leq) 78,57 dB(A)
Environmental correction (K) 3,71 dB(A)
Peak sound power (Lw) 89,32 dB(A)
Summary of Contents for SHARK 282
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Page 82: ...MEP S p A 6 30 73 Use and maintenance manual SHARK 282 Vice assembly 282...
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