JSP ANZ CATALOGUE - Flipbook - Page 56
SELECTION OF HEARING PROTECTION
SONIS®
NOISE EXPOSURE AND HEARING PROTECTION CLASS SELECTION
LAeq,8h dB(A)
class
Less than 90
1
90 - 95
2
95 - 100
3
100 - 105
4
105 - 110
5
Greater than or equal to 110
Specialist advice required
LAeq,8h is the eight hour equivalent continuous A-weighted sound pressure level.
Selection of hearing protection is based on the eight-hour equivalent (LAeq,8h)
and not on a peak level.
HOURS OF USE PER DAY FOR THE dB(A) LEVEL OF A TASK
¼
½
1
140
IC
AT
dB(A) LEVEL OF EXAMPLE TASKS
RIV
UM
E
PN
CH
ES
SS
RE
P
N
PU
125
JSP AUSTRALIA/ NEW ZEALAND
R
TE
E
135
130
2
L
DRIL
R
E
M
HAM
120
UN
NAIL G
115
3
4
S
AW
S
IN
6
R
IPPE
H
C
D
WOO
LOWER
LEAF B
7
H
ORC
T
N
GE
OXY
A
CH
5
GEN
UND
ERAL FO
8
115
RK
RY WO
110
110
MOTORCYCLE ENGINE
105
GRINDI
NG AND
100
HAN
95
PR
90
85
80
75
BU
SY
INT
DD
RILL
PR
ES
TR
AF
FIC
GENERAL FACTORY WORK
CUTTIN
G WHE
ELS
BEL
S
FARM WORK
105
CONCR
ETE PO
URING
T SA
NDE
R
LA
WN
BLA
MO
WE
ST C
HILL
ERS
100
R
This chart uses decibel levels of workplace environments and has example tasks to give an idea of real world sound levels. It
includes the amount of time that you could potentially spend in a particular environment. This chart is for general guidance
only and should not be considered a substitute for a full risk assessment.
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