EN 12021-1998 呼吸防护装置 呼吸装置压缩空气.pdf

BRHNISIHI SIANDARD
BS EN
120211999
ing
Corrigendum No I
Respiratory protective
devices- Compressed ai
for breathing apparatus
50=055
00:o000-0
The European Standard EN 12021: 1998 has the status of a
British Standard
ICS13.340.30
NO COPYING WTHOUT BSI PERMISSON EXCEPT AS PERMITTED BY COPYRGHTLAW
BS EN12021:1999
Issue 2 Apri 1999
National foreword
This British Standard is the English language version of EN 12021: 1998
Clause 6.2.1 of this European Standard requires that, "in any event all contaminants
shall be kept to as low a level as possible and shall be below the national exposure
limit National Occupational Exposure Limits(OEL)for substances hazardous to
health are published yearly by the Health and Safety Executive and can be found in
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Guidance Note, Occupationl e. pose limis(H40). In the context of this
European Standard"below the national limit will mean that the concentration level
should not be greater than 10 %o of the relevant time (8 h)weighted average OEL
The UK participation in its preparation was entrusted by Technical Committee PH/4
Respiratory protection, to Subcommittee Pl/4l, Selection and terminology, which
has the responsibility to
aid enquirers to understand the text
present to the responsible European committee any enquiries on the
interpretation, or proposals for change, and keep the UK interests informed
monitor related international and European developments and promulgate
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them in the UK
A list of organizations represented on this subcommittee can be obtained on request.
Cross-references
The British Standards which implement international or European publications
N寸o寸∞NO
section entitled International Standards Correspondence Index", or by using the
referred to in this document may be found in the BST Standards Catalogue under
Find facility of the BSI Standards Electronic Catalogue
A British Standard does not purport to include all the necessary provisions of a
contract. Users of British Standards are responsible for their correct application
Compliance with a British Standard does not of itself confer immunity
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from legal obligations
三00
O This British Standard, having
Amendments issued since publication
O been prepared under the
o direction of the Hcalth and
Amd. No
Date
ext affected
d Environment Sector Committec,
c was published under the
c①O
authority of the Standard
517
April 1999 Indicated by a sideline
omunittee and comes into effect Corrigendum
J on 15 April 1999
CのBST04-1999
ISBN0580320820