Normy

Obsah

ČSN EN 1999-1-5 ed. 2 EN 1999-1-5 applies to the structural design of aluminium structures, stiffened and unstiffened, that have the form of a shell of revolution or of a round panel in monocoque structures. EN 1999-1-5 covers additional provisions to those given in the relevant parts of EN 1999 for design of aluminium structures. NOTE Supplementary information for certain types of shells is given in EN 1993-1-6 and the relevant application parts of EN 1993 which include: - Part 3-1 for towers and masts; - Part 3-2 for chimneys; - Part 4-1 for silos; - Part 4-2 for tanks; - Part 4-3 for pipelines. The provisions in EN 1999-1-5 apply to axisymmetric shells (cylinders, cones, spheres) and associated circular or annular plates, beam section rings and stringer stiffeners, where they form part of the complete structure. Single shell panels (cylindrical, conical or spherical) are not explicitly covered by EN 1999-1-5. However, the provisions can be applicable if the appropriate boundary conditions are duly taken into account. Types of shell walls covered in EN 1999-1-5 can be (see Figure 1.1): - shell wall constructed from flat rolled sheet with adjacent plates connected with butt welds, termed "isotropic"; - shell wall with lap joints formed by connecting adjacent plates with overlapping sections, termed "lap-jointed"; - shell wall with stiffeners attached to the outside, termed "externally stiffened" irrespective of the spacing of stiffeners; - shell wall with the corrugations running up the meridian, termed "axially corrugated"; - shell wall constructed from corrugated sheets with the corrugations running around the shell circumference, termed "circumferentially corrugated". The provisions of EN 1999-1-5 are intended to be applied within the temperature range defined in EN 1999-1-1. The maximum temperature is restricted so that the influence of creep can be neglected. For structures subject to elevated temperatures associated with fire, see EN 1999-1-2. EN 1999-1-5 does not cover the aspect of leakage. The general assumptions of EN 1990 apply. The provisions of EN 1999-1-1 apply. The design procedures are valid only when the requirements for execution in EN 1090-3 or other equivalent requirements are complied with. For the design of new structures, EN 1999 is intended to be used, for direct application, together with EN 1990, EN 1991, EN 1992, EN 1993, EN 1994, EN 1995, EN 1997 and EN 1998. EN 1999 is intended to be used in conjunction with: - European Standards for construction products relevant for aluminium structures; - EN 1090-1, Execution of steel structures and aluminium structures - Part 1: Requirements for conformity assessment of structural components; - EN 1090-3, Execution of steel structures and aluminium structures - Part 3: Technical requirements for aluminium structures.

Obsah

ČSN EN 1999-1-4 ed. 2 EN 1999-1-4 gives design requirements for cold-formed trapezoidal aluminium sheeting. It applies to cold-formed aluminium products made from hot rolled or cold rolled sheet or strip that have been cold-formed by such processes as cold-rolled forming or press-breaking. NOTE 1 - The rules in this part complement the rules in other parts of EN 1999-1. NOTE 2 - The execution of aluminium structures made of cold-formed structures for roof, ceiling, floor and wall applications is covered in EN 1090-5. EN 1999-1-4 gives methods for stressed-skin design using aluminium sheeting as a structural diaphragm. EN 1999-1-4 does not apply to cold-formed aluminium profiles like C- and Z- profiles nor cold-formed and welded circular or rectangular hollow sections. EN 1999-1-4 gives methods for design by calculation and for design assisted by testing. The methods for the design by calculation apply only within stated ranges of material properties and geometrical properties for which sufficient experience and test evidence is available. These limitations do not apply to design by testing. EN 1999-1-4 does not cover load arrangement for loads during execution and maintenance. For the design of new structures, EN 1999 is intended to be used, for direct application, together with EN 1990, EN 1991, EN 1992, EN 1993, EN 1994, EN 1995, EN 1997 and EN 1998. EN 1999 is intended to be used in conjunction with: - European Standards for construction products relevant for aluminium structures; - EN 1090-1, Execution of steel structures and aluminium structures - Part 1: Requirements for conformity assessment of structural components; - EN 1090-5, Execution of steel structures and aluminium structures - Part 5: Technical requirements for cold-formed structural aluminium elements and cold-formed structures for roof, ceiling, floor and wall applications.

Obsah

ČSN EN ISO 13408-1 Tato norma stanovuje obecné požadavky na procesy, programy a postupy pro vývoj, validaci a průběžnou kontrolu aseptického zpracování výrobků pro zdravotní péči, které nelze sterilizovat v konečném obalu. Toto třetí vydání zrušuje a nahrazuje druhé vydání (ISO 13408-1:2008), které bylo rozsáhle technicky revidováno tak, aby odráželo pokrok, k němuž dochází v technologii sterilní výroby, i to, jak nové přístupy k aseptickému zpracování transformují klasické aseptické zpracování.

Obsah

ČSN EN ISO 20916 This document defines good study practice for the planning, design, conduct, recording and reporting of clinical performance studies carried out to assess the clinical performance and safety of in vitro diagnostic (IVD) medical devices for regulatory purposes. NOTE 1 - The purpose of these studies is to assess the ability of an IVD medical device in the hands of the intended user, to yield results pertaining to a particular medical condition or physiological/pathological state, in the intended population. The document is not intended to describe whether the technical specifications of the IVD medical device in question are adequately addressed by the clinical performance study. This document identifies the principles that underpin clinical performance studies and specifies general requirements intended to - ensure the conduct of the clinical performance study will lead to reliable and robust study results, - define the responsibilities of the sponsor and principal investigator, - assist sponsors, clinical research organization, investigators, ethics committees, regulatory authorities and other bodies involved in the conformity assessment of IVD medical devices, and - protect the rights, safety, dignity and well-being of the subjects providing specimens for use in clinical performance studies. Analytical performance studies are out of the scope of this document. NOTE 2 - When the collection of specimens specifically for the analytical performance study creates an additional collection risk for subjects, some of the elements of this document (particularly the annexes) can be useful for ensuring subject safety. Clinical performance studies that are performed for reasons other than pre- and post-market regulatory purposes, such as for re-imbursement purposes, are out of the scope of this document. NOTE 3 - Some of the elements of this document can be useful for the design of such studies, including subject safety and data integrity. This document does not include safety information for laboratory workers or other personnel collecting the study specimens. NOTE 4 - Such information is included in other publications[1][12][13]. NOTE 5 - Users of this document can consider whether other standards and/or requirements also apply to the IVD medical device which is the subject of the clinical performance study, for instance, in the situation for which there is an IVD medical device and a medical device used in an integrated system (e.g. a lancet, an IVD test strip, and a glucose meter), aspects of both this document and ISO 14155 can be considered.

Obsah

ČSN EN ISO 10297 This document specifies design, type testing and marking requirements for: a) cylinder valves intended to be fitted to refillable transportable gas cylinders; b) main valves (excluding ball valves) for bundles of cylinders; c) cylinder valves or main valves with integrated pressure regulator (VIPR); NOTE 1 - This includes the following specific VIPR designs where: 1) The pressure regulating system is acting as the primary valve operating mechanism (VIPR type B). This also includes designs where closure of the primary valve operating mechanism is obtained by closing the seat of the pressure regulating mechanism. 2) The primary valve operating mechanism is located at the low-pressure side of the pressure regulating system (VIPR type C). d) valves for pressure drums and tubes; which convey compressed, liquefied or dissolved gases. NOTE 2 - Where there is no risk of ambiguity, cylinder valves, main valves, VIPRs and valves for pressure drums and tubes are addressed with the collective term "valves" within this document. This document does not apply to - valves for cryogenic equipment, portable fire extinguishers and liquefied petroleum gas (LPG); - quick-release cylinder valves (e.g. for fire-extinguishing, explosion protection and rescue applications) - requirements for quick-release cylinder valves are specified in ISO 17871 which contains normative references to this document; - self-closing cylinder valves and ball valves. NOTE 3 - Requirements for valves for cryogenic vessels are specified in ISO 21011 and at a regional level, e.g. in EN 1626. Requirements for LPG valves are specified in ISO 14245 or ISO 15995. Requirements for self-closing cylinder valves are specified in ISO 17879. Requirements for ball valves are specified in ISO 23826. Requirements for valves for portable fire extinguishers at a regional level are specified, for example, in the EN 3 series. This document only covers the function of a valve as a closure. Other functions that are possibly integrated in the valve can be covered by other standards. Such standards do however not constitute requirements according to this document. NOTE 4 - Definition of and specific requirements for VIPRs in addition to those that are given in this document are specified in ISO 22435 for industrial applications or ISO 10524-3 for medical applications. Similarly, certain specific requirements for residual pressure valves (RPV) with or without a non-return function in addition to those that are given in this document are given in ISO 15996. NOTE 5 - Certain specific requirements for valves for breathing apparatus in addition to those that are given in this document are specified at a regional level, for example, in the EN 144 series. Certain specific requirements for quick-release valves for fixed fire-fighting systems in addition to those that are given in this document are specified in ISO 16003 and at a regional level, for example, in EN 12094-4. NOTE 6 - Requirements for manufacturing tests and examinations of valves covered by this document are given in ISO 14246.

Obsah

ČSN EN 1570-1 This document specifies the safety requirements for lifting tables with the following characteristics: - serving no more than 2 fixed landings but able to pass a fixed landing and, - having a vertical travel speed of no more than 0,15 m/s, unless safe by position and, - for raising or lowering goods (with or without operator(s) and/or authorized person(s)), or; - for raising or lowering operator(s) and/or authorized person(s) with or without goods, to positions where they can carry out work from a fixed or movable lifting table that is guided throughout its vertical travel only (see Annex H). 1.2 This document specifies the appropriate technical measures for eliminating and reducing the risks arising from the significant hazards listed in Annex B. 1.3 This document does not apply to the following equipment: - lifting tables with a vertical travel speed exceeding 0,15 m/s, unless safe by position; - lifting tables, serving more than 2 fixed landings of a construction, for lifting goods, with a vertical travel speed not exceeding 0,15 m/s (EN 1570 2:2016); - lifting tables, serving more than 2 fixed landings of a construction, for lifting operators, with a vertical travel speed not exceeding 0,15 m/s; - lifting tables carrying operators and installed in full enclosures with a vertical travel speed not exceeding 0,15 m/s; - lifting tables used on ships; - lifting tables designed for artists and stage set features during artistic performances (EN 17206:2020); - power operated lifting platforms for persons with impaired mobility (EN 81 41:2010); - mobile lifting tables for airport ground support equipment (EN 1915 2:2001+A1:2009 and EN 12312 1:2013); - mobile elevating work platforms (EN 280-1:2022); - static Group B elevating work platforms (EN 280-1:2022); - vehicle servicing lifts (EN 1493:2022); - mobile lifting tables used for firefighting (EN 1777:2010); - mobile lifting tables with a horizontal travelling speed of more than 1,6 m/s; - rail dependent storage and retrieval equipment (EN 528:2021+A1:2022); - scissor lift pallet trucks (EN ISO 3691 5:2015, including EN ISO 3691 5:2015/AC:2016 and EN ISO 3691 5:2015/A1:2020); - lifting tables suspended from a ceiling. 1.4 This document does not consider the additional requirements for: - electromagnetic compatibility; - operation in severe conditions (e.g. extreme climates, freezer applications, strong magnetic fields); - operation subject to special rules (e.g. potentially explosive atmospheres, mines); - handling of loads, the nature of which could lead to dangerous situations (e.g. molten metal, acids, radiating materials, particularly brittle loads, loose loads (gravel, tubes)); - hazards occurring during construction, transportation, and disposal; - equipment installed on the load platform or the replacing or maintaining of it; - integration into broader systems or other machines, etc.; - cable-less controls, i.e. wireless; - lifting tables where the hydraulic pressure is derived directly from gas pressure; - lifting tables powered by internal combustion engines.

Obsah

ČSN EN IEC 60519-6 ed. 3 This part of IEC 60519 is applicable to equipment using high frequency or microwave energy alone or in combination with other kinds of energy for industrial heating and processing of materials. It is also applicable to HF and MW generators made available to users as separate units. This part is applicable to equipment operating in the frequency range 3 MHz to 300 GHz, with the following limitations. - This document applies to only high frequency dielectric heating and processing as defined in 3.1.103. It does not apply to induction heating, which it is possible to carry out in the lower part of the specified frequency band and is covered by IEC 60519-3, with magnetic field safety aspects addressed in IEC TS 62997:2017, the latter to be replaced by a technical report (TR) or by a revised technical specification (TS). - The ISM centre frequencies for dielectric heating and processing of industrial interest are narrow bands about 6,78 MHz, 13,56 MHz, 27,12 MHz and 40,68 MHz. Different field emission measurement procedures and limiting values are applicable, depending on the processing frequency in the high frequency range 3 to 300 MHz. Specifications are in Annex BB. - This document specifies limits for microwave emission only for the ISM frequencies between 800 MHz and 6 MHz, as specified in Annex CC. For other microwave frequencies the basic restriction and IEC 62311 apply. - The foundations for compliance with emission values are the basic restrictions, referred to in the IEEE/ANSI C95.1:2019 and Directive 2013/35/EU. However, maximum HF processing frequency electric and magnetic field values are taken from the IEEE/ANSI C95.1:2019 standard, as indicated in Annex BB. - This document is not applicable to: appliances for household and similar use (covered by e.g. IEC 60335-2-25); commercial use (covered by IEC 60335-2-90 and IEC 60335-2-110); laboratory use (covered by IEC 61010-2-010); medical high frequency equipment and accessories (covered by IEC 60601-2-2).

Obsah

ČSN EN IEC 63305 Usually, acoustic wave vector receivers are designed and constructed based on one of two principles. One is the sound pressure difference (gradient) principle. When measuring with this sensor, the vector receiver is rigidly fixed on a mount and supported in water. The other is the co-vibrating (inertial) principle. When measuring with this sensor, the vector receiver is suspended on a mount and supported in water in a non-rigid manner, which allows the vector receiver co-vibrate in the same direction as the sound particle in the sound wave field.

Obsah

ČSN EN IEC 60352-9 This part of IEC 60352 covers ultrasonically welded connections and includes requirements, tests and practical guidance information. This document covers ultrasonically welded connections made with stranded or flexible wires (class 2, 5 or 6 per IEC 60228) of copper or copper alloy, as well as of aluminium or aluminium alloy. These welded metal-to-metal connections shall employ wires with cross-sectional area of 0,08 mm2 to 160 mm2 and shall not exceed a total cross-sectional area, in case of wire bundle, of 200 mm2. For aluminium or aluminium alloy wires, the minimum required cross-sectional area is 2,5 mm2. Additionally, information on materials, data from industrial experience and test procedures are included to ensure electrically stable connections under prescribed environmental conditions. Lastly, this document aims to achieve comparable results when using ultrasonic welding equipment with similar performance and specifications as specified by the termination manufacturer. NOTE - Figures in this document show examples of possible solutions of ultrasonically welded connections of rectangular shape, but solutions are not restricted to the shape displayed.

Obsah

ČSN EN ISO 13702 This document specifies the objectives and functional requirements for the control and mitigation of fires and explosions on offshore installations used for the development of hydrocarbon resources in oil and gas industries. The object is to achieve: - safety of personnel; - protection of the environment; - protection of assets; - minimization of financial and consequential losses of fires and explosions. This document is applicable to the following: - fixed offshore structures; - floating systems for production, storage, and offloading. Mobile offshore units and subsea installations are excluded, although many of the principles contained in this document can be used as guidance.

Obsah

ČSN EN 17016-1 This choreographies document specify ordering between Buyer and Seller where the Buyer wants to reach an agreement with the Seller about an order. It specifies a series of activities that govern communication between the parties and refers to the specifications where information and rules that apply are specified. The various possible behaviours of the Seller and Buyer subsequent to the first order communication are conveyed by vari-ants of this choreography that are specified in 5.2. Previous activities (e.g. cataloguing) and subsequent acti-vities (e.g. invoicing) are outside the scope of this document. If performed electronically, their implementation is covered by other choreographies. The identifier of this choreographies document is EN 17016-1:2024. How to claim compliance to this choreography is specified in 5.2.3.

Obsah

ČSN EN ISO 4126-10 This document specifies the sizing of safety valves and bursting discs for gas/liquid two-phase flow in pressurized systems such as reactors, storage tanks, columns, heat exchangers, piping systems or transportation tanks/containers, see Figure 2. The possible fluid states at the safety device inlet that can result in two-phase flow are given in Table 1. NOTE - The pressures used in this document are absolute pressures, not gauge pressures.