BS 7170:1990
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for respiratory protective devices: self-contained closed-circuit compressed oxygen breathing apparatus
Hardcopy , PDF
15-01-1998
English
28-09-1990
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National foreword
Brief history
Text of EN 145
National appendix A
National appendix B
Cooperating organizations
Specification
Preamble
1. Object and field of application
2. References
3. Definitions and description
4. Classification
5. Requirements
6. Testing
7. Marking
8. Instructions for use, maintenance and storage
Tables
1. Class of apparatus
2. Maximum breathing resistance
3. Duration and number of test periods
4. CO2 content
5. Maximum moisture content
Figures
1. Scheme of the breathing apparatus test rig
2. Humidifier
3. Conditioner
4. Connector for breathing apparatus having a centre
thread connection
5. Dummy head for breathing apparatus having a
permanently connected full face mask
6. Connector for breating apparatus having a
permanently connected mouthpiece assembly
Classification system, performance requirements, marking requirements and instructions to be provided on use, maintenance and storage.
| Committee |
PH/4
|
| DevelopmentNote |
REPLACES BS 4667: PART 1:1974.
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| EN 148-2:1999 | Respiratory protective devices - Threads for facepieces - Part 2: Centre thread connection |
| EN 142:2002 | Respiratory protective devices - Mouthpiece assemblies - Requirements, testing, marking |
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