BS N 4:1974
Withdrawn
Specification for full face mask assemblies for use in contaminated atmospheres
Hardcopy , PDF
English
02-28-1974
11-23-2007
Foreword
Specification
1. Scope
2. Design and construction of mask
2.1 General requirements
2.2 Sizing
2.3 Materials
2.4 Design
3. Performance
3.1 Mechanical
3.2 Pneumatic
3.3 Acoustics
3.4 Wearer requirements
3.5 Environmental
Appendices
A. Vibration transmittibility: mechanical vibration
transmitted to the mask assemblies when worn by a
seated subject
B. Conversion of units of measurement
Figure
1. Vibration transmission to a mask assembly when worn
by a seated subject
Provides minimum performance requirements for the manufacture of full face mask assemblies for use by aircraft flight personnel whilst dispelling the source of atmospheric contamination during flight. The mask assemblies are for use with respirable air or oxygen supplied by demand, continuous flow or re-breathing systems. Covers design and construction of mask and performance.
| Committee |
ACE/1
|
| DevelopmentNote |
Inactive for the new design. Supersedes 72/37268 DC (08/2005)
|
| DocumentType |
Standard
|
| Pages |
10
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
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