GDPR

projektai-lsd Lithuanian Standards Board
Portal for draft standards

Extended search

till

Results

Showing:
prEN 481 Public enquiry
Comment end date 2026-09-17
Workplace exposure - Size fraction definitions for measurement of airborne particles

This document specifies sampling conventions for airborne particle size fractions to assess health-related exposure resulting from the inhalation of particles in workplace atmospheres. Conventions are defined for the inhalable, thoracic and respirable fractions. The sampling conventions only describe the inhalation of particles and their penetration in the respiratory tract as governed by inertia (impaction). Exhaled particles and deposition in the respiratory tract by other mechanisms, e.g. diffusion, are not considered in this document. The sampling conventions defined in this document apply to both indoor and outdoor workplaces. The conventions assume particles penetration and only oral breathing as a worst-case scenario. Nevertheless, the conventions are applicable to both oral and nasal breathing. The conventions are defined based on assumptions given in Clause 6. The choice of convention for a specific application depends on the region of the respiratory tract affected by the health impact of the particle component of interest (see Clause 5). The conventions can be applied to various metrics, including particle number, length, surface area, volume, or mass, depending on the type of particle analysis performed on the sampled aerosol fraction. The health-related fraction concentrations defined in this document are often expressed as the mass of sampled particles per volume of sampled air to allow comparison with mass-based occupational exposure limit values. The conventions primarily apply to the aforementioned metrics, however, they are not applicable to situations involving limit values expressed in a different metric, such as fibre limit values defined by length, diameter, and aspect ratio, unless a measurement procedure explicitly specifies sampling a particular health-related size fraction [11]. The primary objective of this document is to establish standardized conventions for health-related particle size fractions. Sampling is generally carried out using dedicated samplers, for which there is no need to measure the aerodynamic size distribution of the airborne particles to be sampled. Samplers separating airborne particles into one or more relevant fractions are currently available. In general, no assumptions or pre-knowledge are needed on the number of modes, modal diameter(s) or width of the particle aerodynamic size distribution of the airborne particles to be sampled. The conventions in this document are intended to be used for the determination of the exposure of an average worker based on average penetration curves. This document is not intended to determine the deposited dose of an individual worker. The conventions are primarily intended for assessing workers’ exposure to airborne particles by sampling the airborne particles. This document does not apply to large particles emitted at high speed that travel due to their initial momentum, instead of being carried by the air (airborne) and aspirated into humans’ respiratory tract and aerosol samplers by suction (see Annex B). All wind speeds referenced throughout this document are based on the relative speed between the worker and the surrounding air.

Quick filters

Technical Committee
TK 1 Electronics (13) TK 4 Information technology (8) TK 5 Electrical engineering (45) TK 6 Fruit and vegetables products (2) TK 12 Motor - roads (2) TK 13 Agricultural engineering (9) TK 15 Cereals, cereal products, bread and animal feeding stuffs (1) TK 18 Telecommunications (11) TK 20 Toys, child use articles, sports and other recreational equipment (3) TK 22 Fire safety (5) TK 23 Ceramic tiles, masonry and natural stones (3) TK 24 Quality management and quality assurance (2) TK 25 Matrix, gypsum and gypsum based products (1) TK 28 Gas systems (2) TK 29 Water supply (2) TK 31 Acoustics (1) TK 32 Health (9) TK 35 Safety of machinery (4) TK 36 Environmental protection (3) TK 38 Building constructions (13) TK 39 Protection (1) TK 40 Petroleuml, petroleum products, lubricants and alternative fuels (1) TK 41 Welding (2) TK 42 Packaging (1) TK 45 Electric power (5) TK 46 Roofs and building waterproof isolation (1) TK 49 Metallic materials (2) TK 50 Heating and Ventilation Systems (2) TK 51 Food analysis- Horizontal methods (4) TK 52 Ophthalmic optics and lasers (4) TK 54 Assistive products for persons with disability (1) TK 57 Fertilizers (3) TK 59 Geotechnics (1) TK 60 Windows and doors (2) TK 63 Gas cylinders and cryogenic vessels (1) TK 66 Non-destructive testing (1) TK 68 Plastics (7) TK 70 Pulp, paper, board, adhesives (4) TK 79 IT security techniques (15) TK 80 Road transport and traffic telematics (3) TK 82 Safety of trackless overground vehicles (2) TK 83 Assessment of workplace exposure to chemical and biological agents (1) TK 87 Biotechnology (1) TK 88 Building Information Modelling (BIM) (2) TK 89 Risk management and organizational governance (1) TK 99 Health Informatics (3)
ICS
Plonasis popierius (1) Biologinės dirvožemio savybės (1) Advanced ceramics (2) Aerospace electric equipment and systems (4) Alarm and warning systems (1) Alkaline secondary cells and batteries (1) Aluminium products (1) Application of information technology in general (2) Binders. Sealing materials (1) Biological evaluation of medical devices (1) Biology. Botany. Zoology (1) Bolts, screws, studs (1) Bolts, screws, studs (4) Bridge construction (1) Building accessories (2) Buildings in general (1) Cables (1) Car informatics. On board computer systems (1) Cement. Gypsum. Lime. Mortar (4) Cereals, pulses and derived products (1) Company organization and management in general (1) Concrete structures (2) Cooking ranges, working tables, ovens and similar appliances (20) Dental materials (1) Dentistry in general (1) Dishwashers (1) Domestic electrical appliances in general (3) Earth-moving machinery (1) Earthworks. Excavations. Foundation construction. Underground works (2) Electric road vehicles (1) Electric tools (3) Electric traction equipment (1) Electrical accessories in general (1) Electrical and electronic equipment (1) Electrical engineering (Vocabularies) (1) Electrical equipment of ships and of marine structure (1) Electricity supply systems (2) Electroacoustics (1) Electronics (Vocabularies) (2) Emission (4) Environment. Health protection. Safety (Vocabularies) (1) Environmental testing (1) Equipment for children (3) Explosives. Pyrotechnics and fireworks (3) Fibre optic interconnecting devices (4) Fibre optic systems in general (1) Fire protection (3) Fire-resistance of building materials and elements (2) First aid (1) Fixed capacitors (1) Flat steel products and semi-products (2) Food microbiology (1) Gas cylinders (1) Generators (1) High voltage switchgear and controlgear (1) Hospital equipment (1) Immunity (1) Implants for surgery, prosthetics and orthotics (1) In vitro diagnostic test systems (1) Industrial automation systems in general (1) Industrial robots. Manipulators (1) Industrial trucks (1) Inland navigation vessels (1) Insulating materials in general (1) Iron and steel forgings (1) IT applications in education (1) IT applications in health care technology (2) IT applications in office work (1) IT applications in transport (2) IT Security (17) Kitchen furniture (3) Laundry appliances (1) Legal aspects (1) Liquid wastes. Sludge (1) Management systems (3) Materials and articles in contact with foodstuffs (1) Measurement of electrical and magnetic quantities (4) Mechanical testing of metals (1) Medical equipment in general (1) Natural gas (1) Networking (2) Non-destructive testing (1) Oilseeds (1) Open systems interconnection in general (1) Optoelectronics. Laser equipment (2) Other fasteners (2) Other fibre optic equipment (2) Other lifting equipment (1) Other medical equipment (1) Other services (1) Other switchgear and controlgear (1) Paint coating equipment (1) Paper and board (3) Passenger cars. Caravans and light trailers (1) Pipelines and its parts for external sewage systems (1) Plastics in general (1) Plug-and-socket devices. Connectors (2) Potentiometers, variable resistors (1) Power transmission and distribution lines (1) Pressure regulators (1) Properties of surfaces (1) Protection against falling and slipping (1) Public buildings (2) Quantities and units (1) Radiation measurements (2) Radiographic equipment (1) Road construction materials (1) Safety of machinery (5) Seismic and vibration protection (1) Small craft (1) Small kitchen appliances (9) Solar energy engineering (1) Spices and condiments (2) Stationary source emissions (1) Steel pipes and tubes for specific use (1) Sterilization and disinfection in general (1) Surgical instruments and materials (1) Technical aspects (7) Technical product documentation (1) TELECOMMUNICATIONS. AUDIO AND VIDEO ENGINEERING (11) Therapy equipment (1) Thermoplastic materials (4) Valves in general (2) Ventilation and air-conditioning systems (1) Ventilators. Fans. Air-conditioners (1) Vibration and shock with respect to human beings (1) Water supply systems (1) Waxes, bituminous materials and other petroleum products (1) Welded joints and welds (1) Woodworking machines (3) Workplace atmospheres (1)