BS EN 270:1995

Cooperating organizations
National foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Definitions and nomenclature
4 Description
5 Designation
6 Requirements
7 Testing
8 Marking
9 Instructions for use
National Annex NA (informative) Committees responsible
National Annex NB (informative) Cross-references
Figure 1 - Wooden blocks as used in practical performance
           test
Figure 2 - Arrangement for testing flammability
Figure 3 - Arrangement for testing strength of breathing
           hose connections
Figure 4 - Arrangement for testing kinking of compressed
           air supply tube
Figure 5 - Arrangement for testing kinking of compressed
           air supply tubeent of inhalation air
Figure 6 - Arrangement for testing collapse of compressed
           air supply tube
Figure 7 - Arrangement for testing strength of body harness
           or belt, compressed air supply tube and couplings
Figure 8 - Sheffield head for measurement of carbon dioxide
           in inhalation air and breathing existence.
           Example of dummy torso
Figure 9 - Arrangement of Sheffield head for measuring
           carbon dioxide content of inhalation air
Figure 10 - Arrangement for testing carbon dioxide content
            of inhalation air
Table 1 - Testing schedule

Specifies minimum requirements for compressed air line breathing apparatus incorporating a hood as a respiratory protective device. Includes laboratory and practical performance tests for the assessment of compliance with the requirements. Coverage includes: designation, marking, and definitions and nomenclature. Also gives detailed diagrams and tables.