BS N 4:1974
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
SPECIFICATION FOR FULL FACE MASK ASSEMBLIES FOR USE IN CONTAMINATED ATMOSPHERES
Hardcopy , PDF
23-11-2007
English
01-01-1974
Important note : Users cannot be edited or removed once added to your Multi user PDF.
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/38
|
| 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Withdrawn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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