GDPR

projektai-lsd Lithuanian Standards Board
Portal for draft standards

Extended search

till

Results

Showing:
Total records found: 314
arrow-prev 1 2 3 4 5 … 13 arrow-next
prEN IEC 63514:2026 Public enquiry
Comment end date 2026-11-22
Maritime navigation and radiocommunication equipment and systems - VHF data Exchange system - Requirements and test methods for shipborne mobile Station
prEN 438-2 Public enquiry
Comment end date 2026-11-30
High-pressure decorative laminates (HPL) - Sheets based on thermosetting resins (usually called laminates) - Part 2: Determination of properties

This document specifies the methods of test for determination of the properties of high-pressure decorative laminates as defined in Clause 3. These methods are primarily intended for testing the sheets specified in EN 438-3, EN 438-4, EN 438-5, EN 438-6, EN 438-8, and EN 438-9. The precision of the test methods, specified in this document, is not known because inter-laboratory data are not yet available. When inter-laboratory data will be obtained, precision statements will be added to the test method at the following revision. For those test methods having an end point determination based on subjective judgement, it is not meaningful to make a statement of precision.

prEN 196-13 Public enquiry
Comment end date 2026-10-13
Methods of testing cement - Part 13: Effective alkali content

This document specifies the apparatus and procedure for determining the effective alkali content of cements and other hydraulic binders. The method determines the effective alkali content after 28 days of hydration by extracting pore water from cement stone and determining the concentration of sodium and potassium (method A) or hydroxyl ions in the solution (method B).

prEN IEC 60335-2-73:2026/prAA:2026 Public enquiry
Comment end date 2026-10-18
Household and similar electrical appliances - Safety - Part 2-73: Particular requirements for fixed immersion heaters

This standard deals with the safety of electric thermal-storage room heaters intended to heat the room in which they are located, their rated voltage being not more than 250 V for single phase and 480 V for other appliances.

prEN IEC 60335-2-72:2026 Public enquiry
Comment end date 2026-11-08
Household and similar electrical appliances - Safety - Part 2-72: Particular requirements for floor treatment machines with or without traction drive, for commercial use

This Document deals with the safety of powered ride-on and powered walk-behind machines intended for commercial indoor or outdoor use for the following applications: - sweeping, - scrubbing, - wet or dry pick-up, - polishing, - application of wax, sealing products and powder-based detergents, - shampooing of floors. These machines have a cleaning motion which is more linear than lateral or periodic. This standard applies to machines for commercial use. The following list, although not comprehensive, gives an indication of locations that are included in the scope: - public use areas such as hotels, schools, hospitals; - industrial locations, for example factories and manufacturing shops; - retail outlets, for example shops and supermarkets; - business premises, for example offices and banks; - all uses other than normal housekeeping purposes. These machines may be equipped with a traction drive system. The following power systems are covered: - internal combustion engines, - mains powered motors up to a rated voltage of 250 V for single-phase appliances and 480 V for other appliances, - battery-operated machines. Battery-operated machines may be equipped with a built-in battery charger. This standard does not apply to - floor treatment appliances for household use (IEC 60335-2-10); - floor treatment machines for commercial use (IEC 60335-2-67); - spray extraction machines for commercial use (IEC 60335-2-68); - wet and dry vacuum cleaners, including power brush, for commercial use (IEC 60335-2-69); - road sweepers; - machines designed for use on slopes with a gradient exceeding 20 %; - machines equipped with a power take-off (PTO); - machines designed for use in corrosive or explosive environments (dust, vapour or gas); - machines designed for picking up hazardous dusts (as defined in IEC 60335-2-69), inflammable substances, or glowing particles; - machines designed for use in vehicles or on board of ships or aircraft.

prEN ISO 20601 Public enquiry
Comment end date 2026-11-14
Non-destructive testing of welds - Ultrasonic testing - Phased array technique for thin-walled steel components (ISO/DIS 20601:2026)

This document specifies the application of phased array technology for the semi- or fully automated ultrasonic testing of fusion-welded joints in steel parts with thickness values between 3,2 mm and 8,0 mm. This meets the typical range of tube wall thickness values in boilers, which is an important application of this testing technology. The minimum and maximum value of the wall thickness range can be exceeded, when testing level "D" of this document is applied. This document applies to full penetration welded joints of simple geometry in plates, tubes, pipes, and vessels, where both the weld and parent material are low-alloy and/or fine grained steel. NOTE "Semi-automated testing" encompasses a controlled movement of one or more probes on the surface of a component along a fixture (guidance strip, ruler, etc.), whereby the probe position is unambiguously measured with a position sensor. The probe is moved manually. "Fully automated testing" includes mechanized propulsion in addition. Where material-dependent ultrasonic parameters are specified in this document, they are based on steels having a sound velocity of (5 920 ± 50) m/s for longitudinal waves, and (3 255 ± 30) m/s for transverse waves. It is necessary to take this fact into account when testing materials with a different velocity. This document provides guidance on the specific capabilities and limitations of phased array technology for the detection, location, sizing and characterization of discontinuities in fusion-welded joints. Ultrasonic phased array technology can be used as a stand-alone technique or in combination with other non-destructive testing (NDT) methods or techniques, during manufacturing and testing of new welds/repair welds (pre-service testing). This document specifies two testing levels: — level "C" for standard situations; — level "D" for different situations/special applications. This document describes assessment of discontinuities for acceptance purposes based on: — height and length; — amplitude (equivalent reflector size) and length; — go/no-go decision. This document does not include acceptance levels for discontinuities.

prEN IEC 63758-2:2026 Public enquiry
Comment end date 2026-11-22
Qi specification - Version 2.3 - Part 2: Power profiles (Fast Track)
prEN ISO 8339 Public enquiry
Comment end date 2026-12-03
Building and civil engineering sealants - Determination of tensile properties (Extension to break) (ISO/DIS 8339:2026)

ISO 8339:2005 specifies a method for the determination of the tensile properties of sealants used in joints in building construction.

prEN 1032 Public enquiry
Comment end date 2026-10-15
Mechanical vibration - Testing of mobile machinery in order to determine the vibration emission value

This document specifies the determination of whole-body and hand-arm vibration emissions at operator position(s) during testing of mobile machinery. The purpose of this document is to assist technical standardization committees responsible for specific types of machinery in preparing vibration test codes to ensure that such vibration test codes — are as homogeneous as possible with each individual test code having the same basic structure, — are in full accordance with basic standards on measurement of vibration emission, — reflect the latest technical knowledge of methods of determining the vibration emission from the specific family of machinery under consideration, — provide manufacturers with a standardized method for the determination and declaration of the vibration emission value(s) of their machinery, — enable the user of the machinery or the member of an inspection body to compare the vibration emission values of different machinery and to verify the vibration emission values provided by the manufacturer. This document provides requirements for the preparation of vibration test codes (C-type standards), including guidelines for the conditions under which the measurements shall be made (e.g. operating conditions). Information to be included in a typical vibration test code is summarized in Annex A. This document applies to sitting and standing positions. It is applicable to all mobile machinery producing periodic or random vibration with or without transients. This document contains sufficient guidance for designing an appropriate test for machinery for which no vibration test codes exist. It can also be used for the determination of vibration emission values of individual machines. This document is not applicable to rotational vibration and backrest vibration. This document does not present limits or recommended vibration values.

prEN 2593-001 Public enquiry
Comment end date 2026-10-31
Aerospace series — Bases for 10 A electromagnetic plug-in relays, two and four poles double thrown — Part 001: Technical specification

The present document specifies the characteristics, installation and mounting dimensions for plug-in relay bases for use with two and four poles double throw relays in accordance with EN 2548-001. Relay bases in accordance with this document shall be used at ambient temperatures between −70 °C and 125 °C and at altitudes up to 25 000 m.

prEN IEC 60335-2-68:2026/prAA:2026 Public enquiry
Comment end date 2026-11-08
Household and similar electrical appliances - Safety - Part 2-68: Particular requirements for spray extraction machines, for commercial use

This standard deals with the safety of electrical portable, non-self-propelled motor-operated spray extraction machines with or without attachments and with or without electrical heating elements, intended for commercial indoor use. This standard applies to machines for commercial use. The following list, although not comprehensive, gives an indication of locations that are included in the scope: - public use areas such as hotels, schools, hospitals; - industrial locations, for example factories and manufacturing shops; - retail outlets, for example shops and supermarkets; - business premises, for example offices and banks; - rental services for those machines; - all uses other than normal housekeeping purposes. The following power systems are covered: - mains powered motors up to a rated voltage of 250 V for single-phase appliances and 480 V for other appliances, - battery-operated machines. This standard applies to machines in which the pressure of the employed cleaning agent does not exceed 2,5 MPa, and in which the product of the pressure (in MPa) and the flow of cleaning agent (in litres per minute) does not exceed 100, and in which the temperature of the cleaning agent at the spray nozzle outlet does not exceed 85 °C. This standard does not apply to - vacuum cleaners and water-suction cleaning appliances for household use (IEC 60335-2-2); - floor treatment machines for commercial use (IEC 60335-2-67, IEC 60335-2-72); - wet and dry vacuum cleaners, including power brush, for commercial use (IEC 60335-2-69); - hand-held and transportable motor-operated electric tools (IEC 60745 series, IEC 61029 series, IEC 62841 series). - machines designed for use in corrosive or explosive environments (dust, vapour or gas); - machines designed for picking up hazardous dusts (as defined in IEC 60335-2-69), inflammable substances, or glowing particles; - machines designed to handle hazardous solvents, such as flammable or explosive liquids;

prEN IEC 60335-2-124:2026/prAA:2026 Public enquiry
Comment end date 2026-11-15
Household and similar electrical appliances - Safety - Part 2-124: Particular requirements for commercial dry ice blasting machines

This standard deals with the safety of dry ice blasting machines intended for commercial indoor or outdoor use for the hand-guided cleaning, decoating and stripping of surfaces. The blasting machines are either equipped with containers for storage of dry ice or produce dry ice internally. These machines are not equipped with a traction drive. The following power systems are covered: - mains powered motors up to a rated voltage of 250 V for single-phase appliances and 480 V for other appliances, - battery-operated machines. This standard does not apply to - dry ice blasting machines with integrated generation of compressed air; - dry ice blasting machines using other transport gases besides compressed air or nitrogen; - dry ice blasting machines with nozzles being controlled by robotic arms; - spray extraction machines for commercial use (IEC 60335-2-68); - high pressure cleaners (IEC 60335-2-79); - sand blasting equipment (abrasive blasting); - hand-held and transportable motor-operated electric tools (IEC 60745 series, IEC 61029 series, IEC 62841 series); - machines designed for use in corrosive or explosive environments (dust, vapour or gas); - machines designed for use in vehicles in non-ventilated environment; - machines designed for use on board of ships or aircraft.

prEN IEC 61076-3-128:2026 Public enquiry
Comment end date 2026-11-15
Connectors for electrical and electronic equipment - Product requirements - Part 3-128: Rectangular connectors - Detail specification for 16-pole connectors with 3,5 A rated current, 80 V DC rated voltage and IP65 plastic housing with locking lever
prEN 3475-808 Public enquiry
Comment end date 2026-10-15
Aerospace series - Cables, electrical, aircraft use - Test methods - Part 808: Cross-talk

This document specifies a method for measuring the cross-talk of a cable or between cables.

prEN 18381 Public enquiry
Comment end date 2026-10-17
Biological durability of wood and wood-based products - Preparation of wood and wood-based material specimens before leaching testing

This document specifies a method for preparing treated wood test specimens prior leaching test to obtain water samples from treated wood which has been in conditions designed to simulate treated wood exposed out of ground contact (wood held in the storage yard after treatment and which has been in conditions designed to simulate outdoor, out of ground contact situations, use Class 3), or continuous contact with the ground or with water (use Class 4 or 5). This document is also applicable to untreated wood and modified wood. NOTE 1 Test methods written in CEN/TC 38 include how to prepare specimens of wood and wood-based materials before leaching tests. NOTE 2 EN 350 can be considered when using this document for testing untreated wood or modified wood, regarding reference wood species, number of test specimens etc.

prEN IEC 60335-2-79:2026/prAA:2026 Public enquiry
Comment end date 2026-11-08
Household and similar electrical appliances - Safety - Part 2-79: Particular requirements for high pressure cleaners and steam cleaners

-

prEN ISO 25379-2 Public enquiry
Comment end date 2026-11-19
In vitro diagnostic Next Generation Sequencing (NGS) workflows - Part 2: Human RNA examination (ISO/DIS 25379-2:2026)

This document specifies requirements and gives recommendations for next generation sequencing (NGS) workflows. This document covers the pre-examination processes, human RNA isolation, sequencing library preparation, sequencing, sequence analysis and reporting of the examination of sequences for diagnostic purposes from isolated RNA from, e.g. formalin-fixed and paraffin embedded tissues, fresh frozen tissues, fine needle aspirates (FNA), whole blood, circulating tumour cells (CTCs), exosomes and other extracellular vesicles, and circulating cell free RNA from plasma. NOTE 1 Typical applications include, but are not limited to, NGS for oncology and clinical genetics, certain single-cell analyses. This document is addressing in vitro diagnostic examinations including laboratory developed tests and is applicable to medical laboratories, molecular pathology laboratories and molecular genetic laboratories, in vitro diagnostic developers and manufacturers, biobanks as well as institutions and organizations performing biomedical research or sequencing services. This document is not applicable for in situ sequencing, forensic sequencing, sequencing of pathogens or microorganisms and microbiome analysis. NOTE 2 International, national or regional regulations or requirements or multiples of them can also apply to specific topics covered in this document.

prEN ISO 3821 Public enquiry
Comment end date 2026-11-26
Gas welding equipment - Rubber hoses for welding, cutting and allied processes (ISO/DIS 3821:2026)

This document specifies requirements for rubber hoses (including twin hoses) for welding, cutting and allied processes. This document specifies requirements for rubber hoses for normal duty of 2 MPa (20 bar) and light duty [limited to hoses for maximum working pressure of 1 MPa (10 bar) and with bore up to and including 6,3 mm]. This document applies to hoses operated at temperatures −20 °C to +60 °C and used in: — gas welding and cutting; — arc welding under the protection of an inert or active gas; — processes allied to welding and cutting, in particular, heating, brazing, and metallization. This document does not specify requirements for hose assemblies; these are detailed in ISO 8207. This document applies neither to thermoplastics hoses nor to hoses used for high pressure [>0,15 MPa (>1,5 bar)] acetylene.

prEN 14492-2 Public enquiry
Comment end date 2026-10-22
Cranes - Power driven winches and hoists - Part 2: Power driven hoists

This document is applicable to the design, information for use, maintenance and testing of power driven hoists, compact or open construction, with or without trolleys for which the prime mover is an electric, hydraulic or pneumatic motor. They are designed for the lifting and lowering of loads that are suspended on hooks or other load lifting attachments. Hoists can be used either in cranes, in other machines, e.g. rail dependent storage and retrieval equipment, monorail conveyors or by itself. This document is applicable to the following types of hoists and applications: — rope hoists; — chain hoists; — belt hoists; — NGL building hoists; — winches used for lifting operation; — hoists designed for holding stationary loads above persons; — hoists designed for high risk applications. This document does not apply to belt hoists with steel belts as hoisting media. This document does not apply to builders’ hoists for transportation of goods having a guided platform or having a guided load carrying device. This document is not applicable to the following hazards: — this document does not cover hazards related to the lifting of persons. This document does not specify additional requirements for hazards related to the use of hoists in explosive atmospheres in underground mines. This document does not address the hazards related to autonomous operation and use of self-evolving behaviour of the power driven hoists. The significant hazards covered by this document are identified in Annex H. This document is not applicable to power driven hoists manufactured before the date of its publication.

ISO/DIS 24651 Public enquiry
Comment end date 2026-10-23
Biotechnology — Biobanking — Requirements for human mesenchymal stromal cells derived from bone marrow

This document specifies requirements for the biobanking of human mesenchymal stromal cells derived from bone marrow (hBM-MSCs), including the collection of bone marrow and associated data, isolation, culture, characterization, quality control, cryopreservation, storage, thawing, disposal, distribution and transport. This document is applicable to all organizations performing biobanking with hBM-MSCs used for research. This document does not apply to hBM-MSCs for the purpose of in vivo application in humans, cell therapy, clinical applications, tissue engineering or therapeutic use. NOTE International, national or regional regulations or requirements, or multiple of them, can also apply to specific topics covered in this document.

prEN ISO 17640 Public enquiry
Comment end date 2026-11-12
Non-destructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment (ISO/DIS 17640:2026)

This document specifies techniques for the manual ultrasonic testing of fusion-welded joints in metallic materials of thickness ≥8 mm which exhibit low ultrasonic attenuation (especially that due to scatter) at object temperatures from 0 °C to 60 °C. It is primarily intended for use on full penetration welded joints where both the welded and parent material are ferritic. Where material-dependent ultrasonic values are specified in this document, they are based on steels having an ultrasonic sound velocity of (5 920 ± 50) m/s for longitudinal waves and (3 255 ± 30) m/s for transverse waves. This document specifies four testing levels, each corresponding to a different probability of detection of imperfections. Guidance on the selection of testing levels A, B, and C is given in Annex A. This document specifies that the requirements of testing level D, which is intended for special applications, be in accordance with general requirements. Testing level D can only be used when defined by specification. This includes tests of metals other than ferritic steel, tests on partial penetration welds, tests with automated equipment, and tests at object temperatures outside the range 0 °C to 60 °C. This document can be used for the assessment of discontinuities, for acceptance purposes, by either of the following techniques: a) evaluation based primarily on length and echo amplitude of the discontinuity; b) evaluation based on characterization and sizing of the discontinuity by probe movement techniques.

EN 1995-1-1:2025/prA1 Public enquiry
Comment end date 2026-11-12
Eurocode 5 - Design of timber structures - Part 1-1: General rules and rules for buildings

1.1 Scope of prEN 1995-1-1 (1) prEN 1995-1-1 gives general design rules for timber structures. (2) prEN 1995-1-1 also gives specific design rules for buildings and timber civil engineering works. 1.2 Assumptions (1) The assumptions of EN 1990 apply to this document. (2) prEN 1995-1-1 is intended to be used in conjunction with EN 1990, EN 1991 (all parts), EN 1998 (all parts) when timber structures are built in seismic regions.

prEN IEC 62439-1:2026 Public enquiry
Comment end date 2026-11-27
Industrial communication networks - High availability automation networks - Part 1: General concepts and calculation methods
prEN IEC 60073:2026 Public enquiry
Comment end date 2026-10-16
Basic and safety principles for man-machine interface, marking and identification - Coding principles for indicators and actuators
EN 573-3:2026/prA1 Public enquiry
Comment end date 2026-10-17
Aluminium and aluminium alloys - Chemical composition and form of wrought products - Part 3: Chemical composition and form of products

This document specifies the chemical composition limits of wrought aluminium and wrought aluminium alloys and form of products. NOTE The chemical composition limits of aluminium and aluminium alloys specified herein are completely identical with those registered with the Aluminium Association, 1525, Wilson Boulevard, Suite 600, Arlington, VA 22209, USA, for the corresponding alloys.

Total records found: 314
arrow-prev 1 2 3 4 5 … 13 arrow-next

Quick filters

Technical Committee
TK 1 Electronics (33) TK 4 Information technology (3) TK 5 Electrical engineering (35) TK 9 Furniture (1) TK 12 Motor - roads (2) TK 18 Telecommunications (21) TK 20 Toys, child use articles, sports and other recreational equipment (1) TK 21 Textiles and personal protective equipment (1) TK 22 Fire safety (1) TK 24 Quality management and quality assurance (1) TK 25 Matrix, gypsum and gypsum based products (11) TK 28 Gas systems (1) TK 29 Water supply (10) TK 31 Acoustics (1) TK 32 Health (12) TK 35 Safety of machinery (2) TK 36 Environmental protection (5) TK 38 Building constructions (17) TK 39 Protection (2) TK 40 Petroleuml, petroleum products, lubricants and alternative fuels (2) TK 41 Welding (8) TK 45 Electric power (4) TK 46 Roofs and building waterproof isolation (6) TK 49 Metallic materials (9) TK 50 Heating and Ventilation Systems (3) TK 51 Food analysis- Horizontal methods (2) TK 52 Ophthalmic optics and lasers (2) TK 56 Metal liquid tanks and industrial pipelines (1) TK 57 Fertilizers (2) TK 59 Geotechnics (3) TK 60 Windows and doors (4) TK 66 Non-destructive testing (1) TK 68 Plastics (3) TK 70 Pulp, paper, board, adhesives (3) TK 76 Explosive atmospheres (7) TK 79 IT security techniques (3) TK 81 Conservation of cultural property (1) TK 82 Safety of trackless overground vehicles (1) TK 83 Assessment of workplace exposure to chemical and biological agents (1) TK 87 Biotechnology (8) TK 88 Building Information Modelling (BIM) (1) TK 91 Asset management and technical maintenance (1) TK 94 Circural economy (1) TK 99 Health Informatics (1)
ICS
Hidrologinės dirvožemio savybės (1) Acid secondary cells and batteries (3) Adhesives (3) Aerospace electric equipment and systems (4) Alarm and warning systems (1) Alcohols. Ethers (1) Aluminium and aluminium alloys (1) Aluminium products (1) Ambient atmospheres (1) Amplifiers (3) Anaesthetic, respiratory and reanimation equipment (6) Application of information technology in general (1) Binders. Sealing materials (1) Biology. Botany. Zoology (8) Boilers and heat exchangers (1) Brazing and soldering (1) Building accessories (1) Buildings in general (1) Cellular materials (1) Cement. Gypsum. Lime. Mortar (11) Chemical analysis (1) Chemical laboratories. Laboratory equipment (4) Chemicals for purification of water (3) Cleaning appliances (6) Cleanrooms and associated controlled environments (1) Coaxial cables. Waveguides (1) Colour coding (1) Cooking ranges, working tables, ovens and similar appliances (1) Cranes (2) Diagnostic equipment (1) Disinfectants and antiseptics (1) Domestic safety (4) Earthworks. Excavations. Foundation construction. Underground works (3) Ecolabelling (1) Electric road vehicles (3) Electrical and electronic equipment (2) Electrical and electronic testing (1) Electrical apparatus for explosive atmospheres (4) Electrical engineering in general (1) Electrical equipment of ships and of marine structure (1) Emission (1) Environmental economics. Sustainability (1) Equipment for children (1) Exploratory, drilling and extraction equipment (1) Fertilizers (1) Fibres and cables (1) Fire protection (1) Fire-resistance of building materials and elements (1) Flat steel products and semi-products (2) Floor coverings (1) Food microbiology (1) Furniture (1) Fuses and other overcurrent protection devices (2) Generators (1) Geometrical Product Specification (GPS) (1) Hand and arm protection (1) Hand-operated tools (1) Head protective equipment (1) Health care technology (Vocabularies) (1) Home economics in general (2) Immunity (1) Implants for surgery, prosthetics and orthotics (1) Information technology (IT) in general (1) Integrated circuits. Microelectronics (2) Iron and steel pipes (1) Irrigation and drainage equipment (1) IT applications in information, documentation and publishing (1) IT applications in science (1) IT Security (3) Items of art and handicrafts. Cultural property and heritage (1) Laminated sheets (1) Leather and furs (2) Liquid fuels (1) Luminaires (3) Maintenance services. Facilities management (1) Materials and components for railway engineering (1) Mechanical testing of metals (1) Mining equipment in general (1) Miscellaneous domestic and commercial equipment (1) Multilayer applications (1) Networking (2) Non-destructive testing (1) Non-ferrous metal pipes (2) Oilseeds (1) Ophthalmic equipment (2) Other fluid power system components (1) Other kitchen equipment (1) Other lifting equipment (1) Other semiconductor devices (2) Paints and varnishes (2) Petroleum products and natural gas handling equipment (1) Pipelines and its parts for district heat (1) Plastics in general (1) Plug-and-socket devices. Connectors (1) Primary cells and batteries (2) Printed circuits and boards (3) Product and company certification. Conformity assessment (1) Protection against crime (1) Protection against falling and slipping (1) Pumps (2) Radiation measurements (1) Radiographic equipment (1) Railway rolling stock in general (2) Relays (1) RF connectors (2) Rivets (1) Road construction materials (2) Road equipment and installations (1) Roofs (1) Safety of machinery (1) Seismic and vibration protection (1) Small craft (3) Small kitchen appliances (1) Stainless steels (2) Stationary containers and tanks (1) Stationary source emissions (1) Steel structures (3) Sterilization and disinfection in general (1) Sterilizing equipment (1) Surface preparation (4) Switches (1) Technical aspects (7) Technical product documentation (1) TELECOMMUNICATIONS. AUDIO AND VIDEO ENGINEERING (21) Thermal and sound insulating materials (5) Timber structures (1) Transformers. Reactors (2) Ventilators. Fans. Air-conditioners (4) Vibration and shock with respect to human beings (1) Walls. Partitions. Façades (3) Washers and other locking elements (1) Water heating equipment (2) Water supply systems (7) Welded joints and welds (4) Welding equipment (2) Wires (11) Wood-protecting chemicals (2) Wood, sawlogs and sawn timber (1) Workplace atmospheres (1)