Respiratory protective devices. Continuous flow compressed air line breathing devices. Requirements, testing and marking1 Scope This document specifies minimum requirements for continuous flow compressed air line breathing devices for use with a full face mask, half mask, hood, helmet or suit, and devices used in abrasive blasting operations, as a Respiratory Protective Device (RPD). Escape RPD and diving apparatus are not covered by this document. Laboratory and practical performance tests are included for the assessment of conformance to the requirements.

BS EN 474-9 does not apply to pipelayers manufactured before the date of publication of this standard by CEN

BS 5724 is a British standard on medical electrical equipment that discusses the specification for capacitor discharge X-ray generators to ensure protection against electric shock hazards

Special conditions applicable to a particular test or material or simulating a particular climatic environment are not included

it is relevant to:

Ultrasonic diagnostic equipment s equipment that applies ultrasonic waves to an object and maps its internal shape on the rebounding waves

— being adaptable and expandable

It is not applicable to coke or other manufactured fuels

Step 2 — Material equivalence

ISO 13012‑1 applies to:

Fibres and textiles

BS EN 937 on chlorine used for the treatment of water intended for human consumption is useful for:

Attention is given to the factors to be considered in the application of turbine meters to liquid metering