Field testing of general ventilation filtration devices and systems for in situ removal efficiency by particle size and resistance to airflow1 Scope This International Standard describes a procedure for measuring the performance of general ventilation air cleaning devices in their end use installed configuration. The performance measurements include removal efficiency by particle size and the resistance to airflow. The procedures for test include the definition and reporting of the system airflow. The procedure describes a method of counting ambient air particles of 0,3 m to 5,0 m upstream

NOTE 2 Attention is drawn to the requirements of relevant Classification Societies or the government of the state whose flag the ship is entitled to fly

This document gives requirements for functions and properties of on-line plant data communication by reference to IEC 60880 and IEC 60987

If there are two or more

Manufacturers and suppliers of topography measuring instruments

Why should you use BS EN 16602-70-39 - Welding of metallic materials

The content of this exemplar contains the minimum elements of a documented assessment process applicable for performing all classes of assessments as defined in ISO/IEC 33002

BS EN 50052 also covers enclosures of pressurized components such as the centre chamber of live tank switchgear

Some guidance for the estimation of average probability of dangerous failure on demand (PFDavg) value is provided in Annex F

Highways and public environments

This lengthens the period between servicing intervals while also reducing machine downtime

— Information and Communications Technologies (ICT)

Who is BS EN 17126- Sporicidal activity of chemical disinfectants for the medical areas for