1.1 This International Standard establishes standards for the safe design, construction, installation and operation of stationary and skid-mounted air compressors for general use. It specifies requirements to help minimize compressor accidents and defines general safety practices for the field. Potential hazards associated with compressors are listed and detailed under the following headings in clause 6 : a) improper lubrication; b) inadequate cooling; c) mechanical failures; d) personal injury; e) exposure to noise; f) fires and explosions in the pressure system; g) crankcase explosions; h) incorrect installation, operation or maintenance. This International Standard does not cover the prime movers, which are dealt with in other International Standards. 1.2 This International Standard is based on the requirement that the compressor components be designed in accordance with recognized good practice and applicable national standards. 1.3 This International Standard is intended to apply to stationary and skid-mounted air compressors for general use. However, the following types of compressor are specifically excluded : a) compressors with a shaft input less than 2 kW; b) compressors with an effective discharge pressure less than 0,5 bar (50 kPa); c) compressors with an effective discharge pressure exceeding 50 bar (5 MPa); d) compressors specifically supplying air for breathing, diving or surgery; e) compressors used for air brake systems f) ejectors.