Normy

Obsah

ČSN EN 1-1 This document is applicable to residential liquid fuel burning appliances intended for space heating. This document specifies requirements relating to the design, manufacture, construction, safety and performance (efficiency and emission) of appliances fired by liquid fuel (hereafter referred to as "appliance(s)") and provides instructions for them. Furthermore, it also gives provisions for the evaluation of conformity, i.e. initial type testing (ITT) and factory production control (FPC) and marking of these appliances. This document specifies the test methods for the determination of the smoke number, and CO, NOx, and OGC emission test methods. This document does not apply to: - built-in appliances; - appliances equipped with an atomizing burner; - appliances incorporating a boiler or connected to a water system.

Obsah

ČSN EN 161+A1 EN 13611:2019, Clause 1 applies with the following modification and addition: Modification: The 1st paragraph of EN 13611:2019, Clause 1 is replaced by: This document specifies the safety, design, construction, and performance requirements and testing for automatic shut-off valves for burners and appliances burning one or more gaseous fuels, hereafter referred to as "valves". This document is applicable to valves with declared maximum inlet pressures up to and including 500 kPa and of nominal connection sizes up to and including DN 250. Addition: This document is applicable to: - electrically actuated valves; - valves actuated by fluids where the control valves for these fluids are actuated electrically, but not to any external electrical devices for switching the control signal or actuating energy; - valves where the flow rate is controlled by external electrical signals, either in discrete steps or proportional to the applied signal; - valves fitted with closed position indicator switches. An assessment method for valve designs is given by this document. The 4th paragraph of EN 13611:2019, Clause 1 is removed.

Obsah

ČSN EN ISO 29461-4 This document defines test methods for performance testing of individual filter elements and of the complete filtration system.1) This procedure is intended for filter elements and filter systems which operate at flow rated up to 8 000 m3/h per filter element.

Obsah

ČSN EN 17526+A1 This document specifies requirements and tests for the construction, performance, safety and production of battery powered class 1,5 Capillary Thermal-Mass Flow sensor gas meters (hereinafter referred to as meter(s)). This applies to meters having co-axial single pipe, or two pipe connections, which are used to measure volumes of fuel gases of the 2nd and/or 3rd family, as given in EN 437:2018. In general, the term "thermal mass flow meters" applies to a flow-measuring device using heat transfer to measure and indicate gas flowrate, as defined in ISO 14511. NOTE 1 - Although the word "mass" is present in the definition of the measurement principle, gas meters covered by this document provide measurement of gas at base conditions of temperature and pressure. These meters have a maximum working pressure not exceeding 0,5 bar and a maximum flowrate not exceeding 160 m3/h over a minimum ambient temperature range of -10 °C to +40 °C and a gas temperature range as specified by the manufacturer with a minimum range of 40 °C. This document applies to meters indicating volume at base conditions, which are installed in locations with vibration and shocks of low significance. It applies to meters in: - closed locations (indoor or outdoor with protection, as specified by the manufacturer) with condensing humidity or with non-condensing humidity; or, if specified by the manufacturer: - open locations (outdoor without any covering) both with condensing humidity or with non-condensing humidity; and in locations with electromagnetic disturbances likely to be found in residential, commercial and light industrial use. For meters which indicate unconverted volume, reference can be made to Annex C. Unless otherwise stated, all pressures given in this document are gauge pressures. Requirements for electronic indexes, valves and additional requirements for batteries incorporated in the meter and any other additional functionalities are given in EN 16314:2013. Unless otherwise stated in a particular test, the tests are carried out on meters that include additional functionality devices intended by the manufacturer. Clauses 1 to 13 are for design and type testing only.

Obsah

ČSN EN ISO 22163 This document specifies the general safety requirements for demountable machines and trailers, including road-rail trailers - henceforward referred to as 'machines', for use when travelling and working on railway track. NOTE 1 - Trailers, including road-rail trailers, are considered as machines because they are moved along the track by powered machines. This document specifies the requirements to deal with the common hazards presented by their use on the railway during transport, assembly and installation, commissioning, travelling and working on track, use including setting, programming, and process changeover, operation, cleaning, fault finding, maintenance and de-commissioning of the machines and associated equipment when they are used as intended and under conditions of misuse which are reasonably foreseeable. These machines will not run on railway lines open to normal traffic. NOTE 2 - Other rail mounted railway maintenance and infrastructure inspection machines are dealt with in other European standards, see Technical Report CEN/TR 17498:2020. This document is also applicable to machines and associated equipment that in working mode are partly supported on the ballast or the formation. The requirements in this document are based on the assumption that the machines are used, operated and maintained by skilled person(s). This document does not include requirements for: - quality of the work or performance of the machine; - use of separate equipment temporarily mounted on machines; - machines that utilize external power supplies such as the overhead contact line system for traction purposes or as a power source; - hazards due to air pressure caused by the passing of high-speed trains at more than 200 km/h; - operation subject to special rules, e.g. potentially explosive atmospheres; - hazards due to natural causes, e.g. earthquake, lightning, flooding; - working methods; - operation in severe working conditions requiring special measures, e.g. corrosive environments, contaminating environments, strong magnetic fields; - hazards occurring when used to handle suspended loads which may swing freely.

Obsah

ČSN EN IEC 62305-1 ed. 3 Tato část IEC 62305 stanoví obecné zásady pro ochranu staveb před bleskem, včetně jejich instalací a obsahu, jakož i osob. Mimo rozsah platnosti této normy patří sytémy ochrany před bleskem, které se zabývají železničními systémy; instalacemi ve vozidlech, lodí, letadlech a na moři; podzemními vysokotlakými potrubími; potrubními, elektrickými a telekomunikačními vedeními oddělenými od stavby a jadernými elektrárnami. Pro tyto systémy jsou požadavky souboru ČSN EN IEC 62305 považovány za minimální a musí být vhodnýým způsobem aplikovány v konkrétních podmínkách těchto systémů zejména s ohledem na daná prostředí a rizika.

Obsah

ČSN EN IEC 62841-4-8 Tento dokument stanovuje bezpečnostní požadavky a jejich ověření pro návrh a konstrukci drtičů/štěpkovačů s ručním plněním, s vestavěným elektrickým motorem, s podtlakově podporovaným sběrem nebo bez něho, které jsou navrženy k dělení organických materiálů na menší kusy a používají se ve stacionární poloze, přičemž obsluha stojí na zemi. Tento dokument platí pro drtiče/štěpkovače s plnicími vstupními otvory nebo plnicími bezpečnostními otvory, které v součtu odpovídají čtverci 250 mm x 250 mm. Tento dokument neobsahuje požadavky na stroje poháněné spalovacími motory, stroje poháněné externím zdrojem energie, stroje s poháněným vyhazováním určené na rozmetání materiálu nebo nakládání vozidel, stroje, které mají mechanicky poháněné vstupní otvory nebo přídavná zařízení nebo štěpkovače dřeva, které se používají v lesnictví, zemědělství, zahradnictví a při tvorbě krajiny.

Obsah

ČSN EN IEC 60601-2-68 ed. 2 This part of IEC 60601 applies to the basic safety and essential performance of X-ray based image-guided radiotherapy equipment for use with external beam equipment (EBE).

Obsah

ČSN P CEN ISO/TS 16901 (38 6675) This document provides a common approach and guidance to those undertaking assessment of the major safety hazards as part of the planning, design, and operation of LNG facilities onshore and at shoreline using risk-based methods and standards, to enable a safe design and operation of LNG facilities. The environmental risks associated with an LNG release are not addressed in this document. This document is applicable both to export and import terminals but can be applicable to other facilities such as satellite and peak shaving plants. This document is applicable to all facilities inside the perimeter of the terminal and all hazardous materials including LNG and associated products: LPG, pressurized natural gas, odorizers, and other flammable or hazardous products handled within the terminal. The navigation risks and LNG tanker intrinsic operation risks are recognised, but they are not in the scope of this document. Hazards arising from interfaces between port and facility and ship are addressed and requirements are normally given by port authorities. It is assumed that LNG carriers are designed according to the IGC code, and that LNG fuelled vessels receiving bunker fuel are designed according to IGF code. Border between port operation and LNG facility is when the ship/shore link (SSL) is established. This document is not intended to specify acceptable levels of risk; however, examples of tolerable levels of risk are referenced. See IEC 31010 and ISO 17776 with regard to general risk assessment methods, while this document focuses on the specific needs scenarios and practices within the LNG industry.

Obsah

ČSN EN 17533 This document specifies the requirements for the design, manufacture and testing of cylinders, tubes and other pressure vessels of steel, stainless steel, aluminium alloys or of non-metallic construction material. These are intended for the stationary storage of gaseous hydrogen of up to a maximum water capacity of 10 000 l and a maximum allowable working pressure not exceeding 1 100 bar, of seamless metallic construction (Type 1) or of composite construction (Types 2, 3 and 4), hereafter referred to as pressure vessels. NOTE - Additional requirements with regard to assemblies (manifolded cylinders and tubes and other pressure vessels) are not covered by this document. This document is not applicable to Type 2 and 3 vessels with welded liners. This document is not applicable to pressure vessels used for solid, liquid hydrogen or hybrid cryogenic-high pressure hydrogen storage applications. This document is not applicable to external piping which can be designed according to recognized standards.

Obsah

ČSN EN 1996-1-2 ed.3 (1) This document gives rules for the design of masonry structures for the accidental design situation of fire exposure. This document only identifies differences from, or supplements to, normal temperature design. (2) This document applies to structures, or parts of structures, which are within the scope of EN 1996-1-1 or EN 1996-3 and are designed accordingly. (3) This document gives rules for the design of structures for specified requirements in respect of the functions given in (5) and the levels of performance. (4) This document does not cover masonry built with natural stone units according to EN 771-6. (5) This document deals with: - non-loadbearing internal walls; - non-loadbearing external walls; - loadbearing internal walls with separating or non-separating functions; - loadbearing external walls with separating or non-separating functions. Assumptions: (1) The assumptions of EN 1990 and EN 1996-1-1 apply to this document. (2) This document is intended to be used together with EN 1990, EN 1991-1-2, EN 1996-1-1, EN 1996-2 and EN 1996-3. (3) In addition to the general assumptions of EN 1990 and EN 1996-1-1, the following assumptions apply: - the choice of the relevant design fire scenario is made by appropriately qualified and experienced personnel, or is given by the relevant national regulation; - any fire protection measure taken into account in the design will be adequately maintained.

Obsah

ČSN EN 1993-1-7 1) EN 1993-1-7 provides rules for the structural design of assemblies of unstiffened and stiffened steel plates whose elements are under predominantly distributed transverse loads. 2) EN 1993-1-7 is applicable to containment structures such as silos, tanks, digesters and lock gates, where the external actions chiefly act transversely on their individual plates or panels. Where a plate or panel under bending is additionally subject to membrane forces that have a significant effect on the resistance, this document covers assessment of the resistance through its computational analysis procedures. 3) EN 1993-1-7 is applicable to structures with rectangular, trapezoidal or triangular component plate segments, each with one axis of symmetry. 4) EN 1993-1-7 does not apply to plates or panels where the dominant structural resistance require-ment relates to membrane forces in the plates (for these, see EN 1993-1-5). 5) EN 1993-1-7 does not apply to plates or panels whose curvature (out of flatness) exceeds that defined in 1.1(12). For such curved plates, see EN 1993-1-6. 6) EN 1993-1-7 does not apply to circular or annular plates. For such plates, see EN 1993-1-6. 7) EN 1993-1-7 does not apply to cold-formed sheeting. For such plates, see EN 1993-1-3. 8) This document is only concerned with the requirements for design of plates and plate assemblies against the ultimate limit states of: - plastic failure; - cyclic plasticity; - buckling; - fatigue. 9) Overall equilibrium of the structure (sliding, uplifting, or overturning) is not included in this docu-ment. Special considerations for specific applications are available in the relevant applications parts of EN 1993. 10) The rules in this document refer to plate assemblies that are fabricated using unstiffened or stiffened plates or panels. The document is also applicable to the design of individual plates or panels that are predominantly subject to actions transverse to the plane of each plate. Both frictional actions on the plate surface and forces imposed by adjacent components of the plate assembly also induce in-plane actions in each plate. 11) This document gives algebraic rules and guidance to account for bending with small membrane forces in the individual plates or panels. Where an unstiffened or stiffened plate or panel is subject to significant magnitudes of both bending and in-plane forces, the computational analysis procedures of this document apply. 12) Where no application part defines a different range, this document applies to structures within the following limits: - design metal temperatures within the range -50 °C to +100 °C; - the geometry of individual plate segments is limited to rectangular, triangular and trapezoidal sha-pes with b/t greater than 20, or b1/t greater than 20, as appropriate (see Figure 3.2); Single plate elements are treated as flat where the deviation from flatness e0 meets the condition (see Figure 9.1). Where this criterion is not met, the plate or plate assembly is considered to be a shell panel (see EN 1993-1-6). 00,750et