Shall be according to Clause 1 with the following addition: This annex is only applicable to valves or valve functions for which parameters are declared to determine the PL class of systems, e. g. B10d, PFHD and MTTFD. This annex specifies a set of additional requirements to EN 161:2011 to determine the probability of dangerous failures per hour for continuous or high demand mode (PFHD) and the performance level (PL) for electromechanical valves or valve functions used in industrial and thermoprocessing applications (e. g. EN 746-2). NOTE This annex is based on EN ISO 13849-1:2008, Clauses 1, 2, 3, 4.1, 4.2, 4.5, 7, 8, 9, 10, 11, and Annexes C.4, E, and F.
Số hiệu tiêu chuẩn
EN 161/FprA1
Tên tiêu chuẩn
Automatic shut-off valves for gas burners and gas appliances - Special requirements to determine performance level (PL)
Ngày phát hành
2012-08-00
Từ khóa
Air-conditioning systems * Assembly instructions * Automatic * Bending * Burners * Checking equipment * Chemical hazards * Classification * Close * Closing force * Closing time * Compression fittings * Conditions * Conduits * Connecting dimensions * Connections * Construction requirements * Controllers * Corrosion * Creation * Definitions * Delay time * Density * Dirt traps * Durability * Elastomers * Electrical equipment * Enclosures * Explosion hazard * Feathers * Fire risks * Flow rates * Flows * Functions * Gas appliances * Gas burners * Gas technology * Gas valves * Gases * Gas-powered devices * Heaters * Heating engineering * Hydraulics * Inspection * Inspection by attributes * Leak rate * Locking devices * Lubricants * Marking * Materials * Moisture * Moisture test * Mounting * Nominal widths * Opening time * Openings * Operating instructions * Pneumatics * Pressure measurement (fluids) * Product specification * Protection * Safety components * Safety devices * Safety engineering * Safety requirements * Shut-off valves * Specification (approval) * Stop valves * Stopcocks * Surfaces * Testing * Thermal environment systems * Threads * Tightness * Valves * Warning notices * Zinc alloys * Lines * Endurance tests * Freedom from holes * Generation * Stabilization * Cords * Ports (openings) * Mounting dimensions * Impermeability * Electric cables * Storage quality * Requirements * Pipelines * Fuses * Testing devices * Springs
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EN 161/FprA1
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