I.S. EN 457:1992
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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SAFETY OF MACHINERY - AUDITORY DANGER SIGNALS - GENERAL REQUIREMENTS, DESIGN AND TESTING
Hardcopy , PDF
25-11-2005
English
01-01-1992
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Cooperating organizations
National foreword
Foreword
Specification
0 Introduction
1 Scope
2 Normative references
3 Definitions
4 Symbols
5 Safety requirements
6 Test methods
7 Calculation of effective masked threshold
8 Guidelines for the design of auditory danger
signals
Tables
A.1 Calculation of the level of the masked threshold
for a given octave spectrum
B.1 Mean attenuation data of a hearing protector
according to ISO 4869-1
Figures
B.1 Graph displaying the octave band analysis of the
ambient noise, the masked threshold and of the
auditory danger signal during the 'on' period
B.2 Graph displaying octave band analysis of the
ambient noise equal to the masked threshold and of
the auditory danger signal
B.3 Graph displaying octave band analysis of the basic
traffic and crane noise, the masked threshold and
of the auditory danger signal
B.4 Graph displaying octave band analysis of ambient
noise equal to the masked threshold and of the
auditory danger signal
B.5 Graph displaying octave band analysis of the
ambient noise, the masked threshold and of the
auditory danger signal
B.6 Graph displaying the octave band analysis of the
ambient noise, the masked threshold and the
auditory danger signal (above) and the effective
levels under the hearing protector (below)
Annexes
A (informative) Example for the calculation of the
effective masked threshold according to clause 7
B (informative) Examples of warning signals
National appendices
NA (informative)
NB (informative)
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