NS EN 139 : 94 AMD 1 99

      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
Annex A - Recommendations for static and dynamic pressure
          for apparatus with thread connector in accordance
          with EN 148-3
National Annex NA (informative) Committees responsible
National Annex NB (informative) Cross-references
Figure 1 - Test device used in the measurement of breathing
           resistance of apparatus fitted with an overflow
           valve (applies to apparatus with a standard thread
Figure 2 - Measurement of strength of breathing hose
           connections
Figure 3 - Arrangement for testing strength of body hardness
           or belt, compressed air supply tube and couplings
Figure 4 - Wooden blocks as used in practical performance test
Figure 5a - Typical arrangement for testing flammability
Figure 5b - Scheme for harness material single burner test
Figure 6 - Arrangement for testing kinking of compressed air
           supply tube
Figure 7 - Arrangement for testing kinking of compressed air
           supply tube
Figure 8 - Arrangement for testing collapse of compressed air
           supply tube
Figure 9 - Box for testing exhalation valve leakage
Figure 10 - Arrangement for testing exhalation valve leakage
            using a single cylinder breathing machine
Figure 11 - Arrangement for breathing machine
Figure A.1 - Scheme of test rig for dynamic pressure
Table 1 - Testing schedule

Specifies minimum requirements for compressed air line breathing apparatus for use with a full face mask, a half mask or a mouthpiece assembly as a respiratory protective device. Coverage includes: description, marking, and definitions and nomenclature. Also gives detailed diagrams.