CEN - European Committee for Standardization

The document covers all aspects which are relevant for the design of all kinds of water wells abstracting from or injecting water to the groundwater or for groundwater observation.
This document does not apply to horizontal wells and closed loop geothermal systems. The document defines design requirements of water wells for public and private users in
accordance with groundwater protection goals. It gives guideline for all planning steps from
preliminary to final executive project design.
This document specifies a sequential method for designing a well. Based on the hydrogeological
conditions and the objectives of the well, a step-by-step process of dimensioning the
well is defined. This methodology includes dimensioning of the drilling, filter packs, sealing and
screen. Furthermore, selection of appropriate materials, the pump and all other additional well
equipment is established. With regard to the planning process references are provided to drilling
methods, geophysical well logging, well development and pumping tests.

This document specifies restoration by electric arc welding and is limited to the head of the rails only.
This document describes the approval systems for consumables and procedures used in manual metal arc and flux cored metal deposit rail repair welding. This document includes the quality-related tasks and responsibilities of personnel involved in the electric arc repair welding of rails. This document applies to plain rail and switches and crossings manufactured from new Vignole railway rails R200, R220, R260, R260Mn, and R350HT grades rails of 27 kg/m and above as contained in EN 13674-1, EN 13674-2 and EN 13674-4.
The permitted welding processes are limited to Electric Arc (EA) in accordance with EN ISO 4063 and are by description Process No 111: SMAW (Shielded Metal Arc Welding) and Process No 114: FCAW (Flux Cored Arc Welding).
This document can be applied in situ, at line side or at out of track locations. The flash welded leg ends of austenitic manganese steel crossings are included in this document, except when located within 500 mm of manganese crossings. Where repairs are required within 500 mm, refer to EN 16725.

This document provides requirements and guidelines for selecting the measuring device, measuring geometry and temperature control unit for tests involving rotational and oscillatory rheometry. The general principles of test performance are described and example evaluations of rotational and oscillatory rheometry are provided.

This document gives the background to the requirements specified in the EN 15427 series of standards and CEN/TS 15427 series of technical specifications.

This document specifies an accelerated method for the determination of wet-scrub resistance. The determination of cleanability is not covered in the scope of this document.
NOTE            The ability of coatings to withstand wear caused by repeated cleaning operations is an important consideration both from a practical point of view and when comparing and rating such coatings. Since wet-scrub resistance depends not only on the quality of a coating but also on the substrate, the method of application, the drying conditions and other factors, the results obtained are not directly transferable to actual practice. In this document, the evaluation of the coating is based on a defined substrate, a fixed application method, specified drying conditions and a defined method of wet scrubbing.

This document specifies an implementable, conformance-testable coverage structure based on the abstract schema for coverages defined in the ISO 19123-1 coverage fundamentals. This document defines a concrete data structure that is suitable for encoding in many formats.

This document specifies calculation methods for determining the required mass flow to be relieved for each specified conditions described in Table 1.
Recommendations for pressure relief devices for cryostats are given in Annex A.

This document specifies photometric methods of test for comparing in the visible spectrum:
the tinting strength of two similar coloured pigments dispersed in an alkyd resin without a drier;
the scattering power of two white pigments of the same type dispersed in an alkyd resin without a drier.
This document does not apply to the comparison of coloured pigments that on reduction differ greatly in colour.

This document gives guidance to the design of ventilative cooling systems while referring to relevant standards to ensure coherence and avoiding overlapping. In this document different design approaches for use of natural, mechanical or hybrid ventilative cooling can be found, starting at the feasibility phase before going into the design phase. In addition, this document gives guidance on where to find additional information on the design, calculation and maintenance of such systems.
This document is applicable to buildings specified according to the thermal indoor environmental aspects used for human occupancy where production processes don’t have a major impact on the indoor environmental quality. This document is applicable to residential and non-residential buildings.
This document applies to all types of buildings: new and retrofit, residential and non-residential.
This document is applicable to:
-   mechanical ventilative cooling
-   natural ventilative cooling
-   hybrid ventilative cooling
-   airing as a supplement to ventilative cooling specifically relevant during e.g. power failures
-   supplementary free cooling as a supplement to ventilative cooling
The design of supplementary free cooling systems and active cooling systems are not part of the normative part of the document. However, the interface between ventilative cooling systems and supplementary free cooling systems as well as the interface between ventilative cooling and active cooling systems are mentioned informatively.
Design of ventilative cooling systems commonly considers other aspects like energy use, acoustic, draught, solar gain control, outdoor air quality, user acceptance, burglary and cleaning and maintenance, though these are not covered in detail in this document.
This document only covers temperature control.
This document does not apply to:
-   moisture control
-   waterborne
-   heat losses.

1.1   Scope of EN 12309 series
Appliances covered by this EN 12309 series include one or a combination of the following:
-   gas fired sorption chiller;
-   gas fired sorption chiller/heater;
-   gas fired sorption heat pump.
This EN 12309 series applies to appliances only when used for space heating and cooling with or without heat recovery.
This EN 12309 series applies to appliances having flue gas systems of type B and C (according to EN 1749:2020) and to appliances designed for outdoor installations, including type A. EN 12309 does not apply to air conditioners, it only applies to appliances having:
-   integral burners under the control of fully automatic burner control systems;
-   closed system refrigerant circuits in which the refrigerant does not come into direct contact with the water or air to be cooled or heated;
—   mechanical means to assist transportation of the combustion air and/or the flue gas.
The above appliances can have one or more primary or secondary functions (i.e. heat recovery - see definitions in EN 12309-1:2023). In the case of packaged units (consisting of several parts), the standard applies only to those designed and supplied as a complete package.
The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by this document.
Installations used for heating and/or cooling of industrial processes are not within the scope of these standards.
NOTE   All the symbols given in this text are used regardless of the language used.
1.2   Scope of this document
This document deals with the safety of gas-driven sorption appliances for heating and/or cooling having net heat input not exceeding 70 kW as defined in EN 12309-1:2023. It only applies to appliances:
1)   where the temperature of the water does not exceed 105 °C during normal operation;
2)   where the maximum operating pressure in the water circuit does not exceed 6 bar;
3)   types B12, B13, B22, B23, C12, C13, C32, C33 and C63;
4)   for outdoor installations, including type A appliances.
This document does not include specific requirements on surface temperatures of external parts particular to children and elderly people.

This document specifies the additional technical delivery conditions for castings made from all cast iron materials.
This document applies to iron castings produced in sand or permanent moulds or by centrifugal casting, continuous casting or investment casting.

This document specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of austenitic and austenitic-ferritic (duplex) stainless steel without specific inspection requirements.
This document specifies:
—   steel grades and their chemical compositions;
—   mechanical properties;
—   dimensions and tolerances;
—   requirements for inspection and testing;
—   inspection documents;
—   marking;
—   handling and packaging.

This document provides product category rules (c-PCR), that are complementary to EN 15804:2012+A2:2019, for Type III environmental declarations for sandwich panels within the scope of EN 14509 1:— and EN 14509 2:—, which are used for non-structural and structural purposes in building envelopes and for sandwich panels with perforated faces and for sandwich panels with core materials others than defined in EN 14509 1:— and EN 14509 2:—.
Manufactured on industrial plant, double skin metal faced insulating sandwich panels are designed to be laid with overlapping edges in the following applications:
—   roofs and discontinuous roofing;
—   outer walls and wall cladding;
—   walls (incl. partition walls) and (suspended) ceilings inside the building envelope.
This document is intended to be used cradle-to-grave, declaring modules A1-A3, modules C1-C4 and module D, according to EN 15804:2012+A2:2019
NOTE   The assessment of social and economic performances at product level is not covered by this document.

This document specifies requirements and technical specifications for information presented in tactile lettering in the built environment.
NOTE   For the definition of built environment see ISO 21542.
It sets out rules for content, design, arrangement and application of information elements so that blind and partially sighted people are able to locate, identify, fluently read and interpret this information.
This document does not specify technical methods for producing tactile lettering.
This document is only applicable to permanently installed tactile lettering.

This document specifies a method for the determination of free and released glutaraldehyde in leathers, using liquid chromatography (LC).

This document specifies particular requirements and performance criteria for the design and construction of cast-in situ concrete chimneys as well as prefabricated concrete chimneys. It identifies requirements to ensure the mechanical resistance and stability of concrete chimneys in accordance with the general requirements given in EN 13084-1:2025.
As for chimneys attached to buildings the criteria given in Clause 1 of EN 13084-1:2025 apply.
Unless otherwise stated in the following clauses the basic standard for the design of concrete structures, EN 1992-1-1:2023 applies.

This document specifies performance requirements for portable fire extinguishers in addition to the requirements of EN 3 7, to demonstrate their suitability for extinguishing fires in rechargeable batteries based on lithium-ion chemistry with a maximum capacity of 600 Wh, as used for example:
—   portable electronic equipment (smartphones, laptops);
—   power tools and domestic appliances;
—   portable medical equipment;
—   toys and radio-controlled objects;
—   drones;
—   bicycles.
This document contains general requirements and procedures for extinguishing tests. The size of the extinguishing tests is comparable to the battery capacities in the above mentioned applications where the battery is accessible. This document doesn’t apply to larger fire risks, such as vehicle batteries, fork lift trucks, and battery sets of stationary energy storage systems.

This document specifies requirements and test methods for pipes and fittings which are part of piping systems for the rehabilitation of underground non-pressure and pressure drains and sewers, and of water supply networks which transport water intended for human consumption, including raw water intake pipelines.
This document is applicable to the renovation technique family "lining with cured-in-place pipes (CIPP)". It is not applicable to lining with discrete pipes or lining with pipe segments using glass-reinforced thermosetting plastics (GRP) material, as defined by ISO 11295.
It is not applicable to short lengths of CIPP used for patch repair only of local pipe defects.
It applies to the use of thermoset composite materials with various thermosetting resin systems, in combination with compatible fibrous carrier materials, reinforcement, and thermoplastics membranes (see 5.1).
It is applicable to pipes and fittings, as manufactured, as well as to the installed system. It applies for service temperatures up to 50 °C for drains and sewers and up to 25 °C for water supply networks.
For pressurised networks, this document applies to independent (fully structural, class A) and interactive (semi structural, class B) pressure pipe liners, as defined in ISO 11295, which do not rely on adhesion to the existing pipeline.
It does not include requirements or test methods for resistance to abrasion, jetting, cyclic loading or impact, which are outside the scope of this document.

This document specifies a spectrometric method for the determination of the chlorophyll content of rapeseed. It is not applicable to the determination of chlorophyll in oils.

This document shall cover, regardless if manufactured in factories or in temporary plants on site under the same conditions, prefabricated reinforced components of autoclaved aerated concrete with a dry density between 250 and 1000 kg/m3 to be used in building construction as:
—   solid, hollow core and multilayer wall elements intended to be used as structural elements;
—   solid, hollow core and multilayer wall elements intended to be used as non-structural elements and if relevant for applications in contact with soil and ground water;
—   retaining walls intended to be used as structural elements and if relevant for applications in contact with soil and ground water;
—   solid, hollow core and multilayer roof elements intended to be used as structural elements;
—   solid, hollow core and multilayer floor elements intended to be used as structural elements;
—   solid, hollow core beams intended to be used as structural elements;
—   solid piers intended to be used as structural elements and if relevant for applications in contact with soil and ground water;
—   cladding elements intended to be used as non-loadbearing elements;
—   rectangular cross-section box culverts intended not to be used as structural elements and if relevant for applications in contact with soil and ground water;
—   components for noise barriers intended not to be used as structural elements and if relevant for applications in contact with soil and ground water.
This document does not cover:
—   retaining walls intended to retain tanks or reservoirs of liquids;
—   precast diaphragm walls (concrete sheet piling);
—   ribbed floor elements;
—   lintels.

This document specifies the classifications, requirements and test methods for unplasticized poly(vinyl chloride) (PVC-U) profiles covered with paint designed for external uses which are intended to be used for the fabrication of windows and doors.
NOTE 1   The terms lacquer, varnish and coating are used as synonyms for paint.
NOTE 2   For editorial reasons in this document the term “window” is used for window/door.
NOTE 3   For the purpose of production control, test methods other than those specified in this document can be used.

The purpose of this document is to provide methods for quantifying the ride comfort of a passenger in a rail vehicle in response to the track sections it is operated over.
The methods aim to quantify the effects of vehicle body motions on ride comfort and to make the assessment of passenger comfort predictable, repeatable, objective and meaningful.
The methods and comfort scales are validated for people of good health.
This document applies to passengers in rail vehicles operating on heavy rail networks.
This document applies to measurements of motions. It also applies to simulated motions. Guidance is provided on:
-   which method described within the document should be used for different scenarios;
-   typical values for different comfort levels;
-   the application of simulation.
This document excludes health and safety issues, non-passenger carrying vehicles, vehicle homologation and safety, limit values, motion sickness, discomfort caused by accelerating and braking, design guidelines and measurement technology.

This document provides specifications and guidance for the use of standard fire testing for plastics and the products in the following aspects:
selection of appropriate tests that reflect realistic end-use conditions;
grouping of the reaction-to-fire characteristics that any given test or tests can measure;
assessment of tests as to their relevance in areas such as material characterisation, quality control, pre-selection, end-product testing, environmental profiling and design for the environment (DfE);
definition of potential problems that can arise when plastics are tested in standard fire tests.
This document does not include specification for development or design of new fire-tests for plastics.

This document specifies the requirements and test methods for external tooth bleaching products. These products are intended for use in the oral cavity, either by professional application (in-office tooth bleaching products) or consumer application (professional or non-professional home use of tooth bleaching products) or both. It also specifies requirements for their packaging, labelling and manufacturer’s instructions for use.
This document is not applicable to tooth bleaching products:
specified in ISO 11609;
intended to change colour perception of natural teeth by mechanical methods (e.g. stain removal) or using restorative approaches, such as veneers or crowns;
auxiliary or supplementary materials (e.g. tray materials) and instruments or devices (e.g. lights) that are used in conjunction with the bleaching products.
This document does not specify biological safety aspects of tooth bleaching products.
NOTE            The maximum concentration of a bleaching agent for professional or non-professional use is subject to each country’s regulatory body.

This document provides guidance for setting up and operating a service providers prequalification, qualification, or shortlisting process.
This document is applicable to:
a)   organizations which provide list of prequalified, qualified or shortlisted service providers;
b)   any interested parties who are directly or indirectly involved in or affected by a service providers prequalification, qualification, or shortlisting process.
This document is not applicable to business-to-consumer (B2C) service contracts or for works contracts.
NOTE 1 “Works contracts” are contracts that have as their object the execution, or both the design and execution, of a work and are not covered in this document. Contracts having as their object only the design of a work are covered.
NOTE 2 “Work” means the outcome of building or civil engineering works taken as a whole which is sufficient in itself to fulfil an economic or technical function.
This document is also not applicable for contracts covering employment arrangements (be they of formal or informal nature).

1.1 This document specifies the minimum requirements for safety and performance of some optional specific permanently installed equipment on firefighting and rescue service vehicles, operated by trained persons, as designated in EN 1846 1:2011 and specified in EN 1846 2:2024.
NOTE 1   Categories and mass classes of these vehicles are given in EN 1846 1:2011.
NOTE 2   Vehicle means ground vehicles which can also drive on rails and amphibious vehicles.
The permanently installed equipment covered by this document is given below:
-   water installation;
-   additive installation;
-   monitor;
-   equipment gantries;
-   demounting systems.
This document covers also the use of wireless control systems.
NOTE 3   This document is assumed to be read in conjunction with any national regulations in force for vehicles using the public roads and with any EU Directives and associated EFTA regulations in force relevant to vehicles and their equipment.
For the purposes of this document, the normal ambient temperature range is –15 °C to +40 °C.
For equipment to be used at temperature outside this temperature range, the particular temperature range is specified by the user. A risk assessment determines any need for additional precautions.
1.2 This document does not deal with the following types of equipment:
-   all control systems outside of the cabin related to hook arm system;
-   provisions for non-firefighting removable equipment driven by PTO.
1.3 This document deals with the technical requirements to minimize the hazards listed in Annex A which can arise during operational use, routine checking and maintenance of firefighting and rescue service vehicles.
It does not cover the hazards generated by:
-   non-permanently installed equipment i.e. portable equipment carried on the vehicle;
-   use in potentially explosive atmospheres;
-   commissioning and decommissioning;
-   noise (as permanently installed equipment cannot be operated separately from the vehicle, this hazard is covered in EN 1846 2:2024);
-   electromagnetic compatibility;
-   cyber security;
-   cyber safety.
Additional measures not dealt with in this document can be necessary for specific use (e.g. fire in natural environment, flooding, etc.).
1.4 This document is not applicable to the equipment which is manufactured before its date of publication by CEN.

This document specifies requirements for the approval of a welding process in a fixed plant, together with the requirements for subsequent welding production.
This document applies to new Vignole rails manufactured in accordance to EN 13674 1 and welded by flash butt welding to crossing components in a fixed plant, and intended for use on railway infrastructures.
This document applies to cast Manganese crossings manufactured to EN 15689, fabricated crossings manufactured from rail and crossings manufactured from forged/rolled premium steels.
NOTE   EN 14587-1 is also used for the flash butt welding of switches.
Sometimes special profiles exist in crossing construction, which are not rail profiles as defined in EN 13674 series (example: profile with machined off rail foot). In these cases, tests are defined by the railway authority in participation with the manufacturer.

This document specifies and gives guidelines for a standard test method for the assessment, using human participants, of thermal comfort in vehicles. It is not restricted to any particular vehicle but provides the general principles that allow assessment and evaluation. The method can be used to determine a measure of the performance of a vehicle for conditions of interest, in terms of whether it provides thermal comfort to people or not. This can be used in vehicle development and evaluation.
This document is applicable to all types of vehicles, including cars, buses, trucks, off-road vehicles, trains, aircraft, ships, submarines, and to the cabins of cranes and similar spaces. It applies where people are enclosed in a vehicle and when they are exposed to outside conditions. For those exposed to outside conditions, such as riders of bicycles or motorcycles, drivers of open sports cars and operators of fork lift trucks without cabins, vehicle speed and weather conditions can dominate responses. The principles of assessment, however, still apply.
This document applies to both passengers and operators of vehicles where its application does not interfere with the safe operation of the vehicle.
It describes the principles of the assessment and evaluation of thermal comfort, including the use of test methods and trials. It also describes subjective methods that can be used in assessment.

This document defines front visibility conditions including positions of drivers and its assessment.
This document applies to metro vehicles with or without permanent driver, excluding shuttles used for short distance transportation.
Metro vehicle definition is according to EN 17343.
NOTE   For special vehicles, see EN 14033-4 and EN 15746-4.

This document specifies requirements for continuously hot-dip coated products made of low carbon steels for cold forming, of steels for construction and steels with high proof strength for cold forming coated with zinc (Z), zinc-iron alloy (ZF), zinc-aluminium alloy (ZA), aluminium-zinc alloy (AZ), zinc-magnesium alloy (ZM), aluminium-silicon alloy (AS) or aluminium (A) and for continuously hot-dip coated products made of multiphase steels for cold forming coated with zinc (Z), zinc-iron alloy (ZF), zinc-aluminium alloy (ZA) or zinc-magnesium alloy (ZM) in thicknesses of 0,20 mm ≤ t ≤ 6,5 mm.
By agreement at the time of enquiry and order, this document is applicable to continuously hot-dip coated flat products of an expanded validity range defined for thicknesses t < 0,20 mm with agreed mechanical properties and test specimens, adhesion of coating and surface condition requirements. This document is applicable to strip of all widths and to sheets cut from it (≥600 mm width) and cut lengths (<600 mm width).
NOTE   The products covered by this document are used where cold formability, high strength, a defined minimum yield strength and/or corrosion resistance are the most important factors. Corrosion resistance of the product is depending on coating type and coating thickness, hence to its mass (see also 7.3.2). The products covered by this document can be used as substrates for organic coated flat products specified in EN 10169 for building and general engineering applications.

The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards for aerospace applications.
This Part 001 specifies the "General rules" framework valid for all parts.

The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards for aerospace applications.
This Part 006 specifies the "Specific rules for filler metals for brazing".

This document specifies requirements, test methods and pass criteria for the:
—   implemented static geocage function used to prevent the UA from breaching the horizontal and vertical limits of the planned operational volume;
—   information to be provided in the manufacturer’s instructions describing this function, its limits and the required size of the contingency volume after accounting the errors, reaction time and corrections.
This document does not cover the dynamic geocage function.
In addition, this document only covers the termination of the flight of the UA by the geo-caging function when breaching the OV. It does not address the compliance to the technical requirements imposed by Regulation (EU) 2019/945 on the Flight Termination System which are fully addressed by standard EN 4709-006, including the automatic triggering of the termination performed independently from the geo-caging function.

This document provides a general view of the most relevant requirements to ensure safety, reliability, system automation, security, comfort, interoperability and operations of the hyperloop system used for the transport of passengers and goods.
This document will be the basis to set the general common requirements for the hyperloop system as a whole.

This document specifies requirements and provides guidance for establishing, implementing, maintaining, reviewing and improving an anti-bribery management system. The system can be stand-alone or can be integrated into an overall management system. This document addresses the following in relation to the organization's activities:
—     bribery in the public, private and not-for-profit sectors;
—     bribery by the organization;
—     bribery by the organization's personnel acting on the organization's behalf or for its benefit;
—     bribery by the organization's business associates acting on the organization's behalf or for its benefit;
—     bribery of the organization;
—     bribery of the organization's personnel in relation to the organization’s activities;
—     bribery of the organization's business associates in relation to the organization’s activities;
—     direct and indirect bribery (e.g. a bribe offered or accepted through or by a third party).
This document is applicable only to bribery. It sets out requirements and provides guidance for a management system designed to help an organization to prevent, detect and respond to bribery and comply with anti-bribery laws and voluntary commitments applicable to its activities.
The requirements of this document are generic and are intended to be applicable to all organizations (or parts of an organization), regardless of type, size and nature of activity, and whether in the public, private or not-for-profit sectors. The extent of application of these requirements depends on the factors specified in 4.1, 4.2 and 4.5.
NOTE 1        See Clause A.2 for guidance.
NOTE 2        The measures necessary to prevent, detect and mitigate the risk of bribery by the organization can be different from the measures used to prevent, detect and respond to bribery of the organization (or its personnel or business associates acting on the organization's behalf). See A.8 for guidance.

This document specifies checks, measurement methods and procedures in order to verify the fitness for purpose of the installed ventilation systems and air conditioning systems according to design.
It establishes a procedure intended to technically support the handing over and inspection of these systems.
This document enables the choice between checks and measurements when sufficient, and additional measurements, when necessary.
This document applies to mechanical ventilation systems (including the mechanical part of hybrid systems) and full and (partial) air conditioning systems in non-residential (parts of) buildings.
This document does not apply to:
—   heat generating systems and their control;
—   refrigerating systems and their control;
—   distribution of heating and cooling medium to the air handling units;
—   compressed air supplying systems;
—   water conditioning systems;
—   central steam generating systems for air humidifying;
—   electric supply systems.
This document is not applicable to ventilation systems and air conditioning systems for industrial or other special process environments.

This document provides technical specification and verification methods to support compliance with Commission Delegated Regulation (EU) 2019/945 of 12 March 2019 on unmanned aircraft systems and on third-country operators of unmanned aircraft systems.
This part provides requirements, test methods and pass criteria for the means to terminate flight (flight termination) for unmanned aircraft systems, in particular addressing:
— safety related aspects of the architecture;
— descent performance;
— means to reduce the effects of impact on ground; and
— manufacturer’s instructions.
Even if security, including IT security, may be useful from an operational point of view, it falls outside the scope of this document.
An activation of the means to terminate the flight by a visual observer is also outside the scope of this document.
This document provides voluntary means of demonstrating compliance with the requirements laid out in Regulation (EU) 2019/945.
Additional hazards that occur from the characteristics of the payload are excluded and are, conversely, under the responsibility of the UAS manufacturer and UAS operator.

This document specifies the electrolytic cadmium plating of parts and fasteners in steel of tensile strength UTS ≤ 1 450 MPa, copper, copper alloys and nickel alloys, whose temperature in service does not exceed 235 °C.

This document specifies criteria for the selection of the most suitable method and technique for the assessment of leak tightness by indication or measurement of a gas leakage. Annex A, normative, allows a comparison of standard test methods. Leak detection using hydrostatic tests, electromagnetic methods is not included in this document.
This document is applicable to equipment which can be evacuated or pressurized.

This document provides technical specification and specifies verification methods to support compliance with Commission Delegated Regulation (EU) 2019/945 of 12 March 2019 amended by Commission Delegated Regulation (EU) 2020/1058 of 27 April 2020 on unmanned aircraft systems (UAS) and on third-country operators of unmanned aircraft systems.
This includes compliance with product requirements for UAS intended to be operated under a standard scenario in the ‘specific’ category (class C5 and class C6 UAS).
This document is only applicable for unmanned aircraft (UA) with energy sources based on electro-chemical technologies.
Additional hazards that occur from the characteristics of the payload are excluded and are under the responsibility of the manufacturer and operator.
The present document covers requirements expressed in Annex, Part 16 requirements (1), (3), (4) and (6) and Part 17 requirements (1), (3), (6) and (7) of the Regulation 2020/1058.

This document specifies the performance and test requirements of hose assemblies supplied in assembled condition using rubber hose according to ISO 3821 up to and including nominal size 20,0, for gas welding, cutting and allied processes.
This document is not applicable to high-pressure hose assemblies upstream of the pressure regulators.

This document specifies a test method for determining the Vickers and Knoop hardness of monolithic fine ceramics at room temperature.

This document specifies the characteristics of inch based spherical plain bearing, metal to metal, in corrosion resisting steel, narrow series.
They are intended for use in fixed or moving parts of the aircraft structure and their control mechanisms.
They are used in the temperature range as determined by the grease capability as below:
-   code A: greased as per MIL-PRF-23827 Type I, operating temperature range −73 °C to 121 °C;
-   code B: greased as per MIL-PRF-81322, operating temperature range −54 °C to 177 °C.
The range of application for bearings lubricated with grease per code A is limited to 121 °C.
In both cases the spherical surface of the outer or inner ring are provided with a dry-film lubricant as per MIL-PRF-46010 or equivalent (anti-seizing protection).
The slide hole treatment either at the outer ring or inner ring.

The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards for aerospace applications.
This Part 002 specifies the "Specific rules for aluminium, aluminium alloys and magnesium alloys".

The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards for aerospace applications.
This Part 005 specifies the "Specific rules for steels".

The EN 4500 series specifies the rules for the drafting and presentation of metallic material standards for aerospace applications.
This Part 004 specifies the "Specific rules for titanium and titanium alloys".