Revised Standard from Last Update.

1. SCOPE

This standard specifies minimum performance requirements for self-contained open-circuit breathing apparatus with full face mask used as respiratory protective devices, except escape apparatus and diving apparatus.

Such equipment is intended for use in work situations where the risk of over pressurization of the cylinders due to hot environmental conditions is low.

Laboratory and practical performance tests are included for the assessment of compliance with the requirements.

2. REFERENCES

The standards listed below contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below:

IS 8347 : 2008 Respiratory protective devices - Definitions, classification and nomenclature of components (first revision)

IS 14138 Respiratory protective devices : Threads for facepieces - Specification:

(Part 1) : 1994 Standard thread connection

(Part 2) : 1994 Centre thread connection

IS 14166 : 1994 Respiratory protective devices - Full-face masks - Specification

14700 (Part 6/Sec 2) : 2019 Electromagnetic compatibility (EMC): Part 6 Generic standards, Section 2 Immunity for industrial environments

IS 17274 Respiratory protective devices - Methods of test and test equipment

(Part 2) : 2019 Determination of breathing resistance

(Part 5) : 2019 Breathing machine, metabolic simulator, RPD head forms and torso, tools and verification tools

(Part 6) : 2019 Mechanical resistance/strength of components and connections

(Part 10) : 2019 Resistance to ignition, flame, radiant heat and heat

IS/IEC 60079 (Part 0) : 2017 Explosive atmospheres: Part 0 Equipment - General requirements (third revision)

IS/IEC 60079 (Part 11) : 2011 Explosive Atmospheres: Part 11 Equipment protection by intrinsic safety “i” (first revision)