BS EN 12021:1999 Respiratory protective devices. Compressed air for breathing apparatus

This European Standard specifies requirements for the quality of compressed air supplied for use with the following types of equipment.

a) Respiratory protective devices Ð self-contained open-circuit compressed air breathing apparatus and open-circuit compressed air underwater breathing apparatus (SCUBA).

b) Respiratory protective devices Ð compressed air

line breathing apparatus and compressed airline

breathing apparatus for use under water.

c) Respiratory protective devices for escape Ð

self-contained open-circuit compressed air breathing

apparatus including full face mask or mouthpiece

assembly or hoods.

The standard also applies to synthetic air. Account is

taken of the use of air at normal ambient pressures

and increased pressures. Maximum allowable

concentrations of impurity for compressed air are

quoted as values calculated at normal atmospheric

pressure.

This European Standard does not apply to compressed

air used for medical purposes, for underwater

breathing apparatus specially designed to be used for

diving in water and other fluids when the hydrostatic

pressure exceeds 6 bar absolute or for breathing

apparatus designed for use at high altitudes.

Foreword 2

1 Scope 3

2 Normative references 3

3 Definitions 3

4 Designation 3

5 General 3

6 Requirements 3

6.1 Oxygen 3

6.2 Contaminants 3

6.3 Water content 3

7 Sampling and testing 3

Annex A (informative) Typical composition

of natural air (ISO 2533) 4

Annex ZA (informative) Clauses of this

European Standard addressing essential

requirements or other provisions of EU

Directives 4

BS EN 12021:1999

Respiratory protective devices. Compressed air for breathing apparatus

Published:

15 Apr 1999

Withdrawn:

30 Sep 2014