EN 352-4:2001/A1:2005

SLOVENSKI STANDARD
01-januar-2006
Varovala sluha – Varnostne zahteve in preskušanje – 4. del: Naušniki, katerih
dušenje je odvisno od nivoja hrupa
Hearing protectors - Safety requirements and testing - Part 4: Level-dependent ear-muffs
Gehörschützer - Sicherheitstechnische Anforderungen und Prüfungen - Teil 4:
Pegelabhängige Kapselgehörschützer
Protecteurs individuels contre le bruit - Exigences de sécurité et essais - Partie 4 : Serre-
tete a atténuation dépendante du niveau
Ta slovenski standard je istoveten z: EN 352-4:2001/A1:2005
ICS:
13.340.20 Varovalna oprema za glavo Head protective equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 352-4:2001/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2005
ICS 13.340.20
English Version
Hearing protectors - Safety requirements and testing - Part 4:
Level-dependent ear-muffs
Protecteurs individuels contre le bruit - Exigences de Gehörschützer - Sicherheitstechnische Anforderungen und
sécurité et essais - Partie 4 : Serre-tête à atténuation Prüfungen - Teil 4: Pegelabhängige Kapselgehörschützer
dépendante du niveau
This amendment A1 modifies the European Standard EN 352-4:2001; it was approved by CEN on 19 September 2005.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the Central Secretariat or to any CEN member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 352-4:2001/A1:2005: E
worldwide for CEN national Members.

Foreword
This European Standard (EN 352-4:2001/A1:2005) has been prepared by Technical Committee CEN/TC 159
“Hearing protectors”, the secretariat of which is held by SIS.
This Amendment to the European Standard EN 352-4:2001 shall be given the status of a national standard,
either by publication of an identical text or by endorsement, at the latest by April 2006, and conflicting national
standards shall be withdrawn at the latest by April 2006.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and United Kingdom.
Page 5, Clause 3. Terms and definitions, subclause 3.1, 3.2 and 3.3
Replace the existing text of 3.1, 3.2 and 3.3 with the following:
3.1
criterion level (H)
A-weighted sound pressure level of the H noise for which the A-weighted equivalent diffuse field related sound
pressure level when a level-dependent ear-muff is worn and the sound restoration circuit is operating at
maximum volume first exceeds 85 dB(A) (as determined using the calculation procedure described in Annex
B)
3.2
criterion level (M)
A-weighted sound pressure level of the M noise for which the A-weighted equivalent diffuse field related
sound pressure level when a level-dependent ear-muff is worn and the sound restoration circuit is operating at
maximum volume first exceeds 85 dB(A) (as determined using the calculation procedure described in Annex
B)
3.3
criterion level (L)
A-weighted sound pressure level of the L noise for which the A-weighted equivalent diffuse field related sound
pressure level when a level-dependent ear-muff is worn and the sound restoration circuit is operating at
maximum volume first exceeds 85 dB(A) (as determined using the calculation procedure described in Annex
B)
Page 6, subclause 4.3.3
Delete 4.3.3
Page 7, subclause 5.3
Delete 5.3
Page 10, Annex B
Replace the existing text of Annex B with the following text:

Annex B
(informative)
Determination of criterion level for level-dependent ear-muffs
B.1 Introduction
The A-weighted equivalent diffuse f
...