Normy

Obsah

ČSN EN 1998-2 1) This document is applicable to the design and verification of new bridges in seismic regions. It gives general rules for the design and verification relevant to bridges of consequence classes CC1, CC2 and CC3, as defined in EN 1990:2023, A.2. NOTE 1 - EN 1998-2 covers the design of reinforced concrete, steel and composite steel-concrete bridges, with the exception of prestressed piers. Guidance for design of timber bridges is given in Informative Annex C. NOTE 2 - The assessment of existing bridges is covered in EN 1998-3. 2) Unless specifically stated, EN 1998-1-1 and EN 1998-5 apply. 3) EN 1998-2 is applicable in complement to the other relevant Eurocodes. NOTE - EN 1998-2 contains only those provisions that, in addition to the provisions of the other relevant Euro-codes, are used for the design of new bridges in seismic regions. EN 1998-2 complements in this respect the other Eurocodes. 4) EN 1998-2 provides basic performance requirements and compliance criteria applicable to new bridges in seismic regions. 5) EN 1998-2 is applicable to the seismic design of bridges exploiting ductility in structural members or through the use of antiseismic devices. 6) EN 1998-2 gives detailing rules for ductility of the structural members in bridges designed to exploit ductility as a means of seismic protection. When ductility is exploited, EN 1998-2 primarily covers bridges in which the horizontal seismic actions are mainly resisted through bending of the piers or at the abutments, i.e. of bridges composed of vertical or nearly vertical pier systems supporting the traffic deck superstructure. 7) EN 1998-2 gives specific rules for bridges equipped with antiseismic devices, for cable-stayed and extradosed bridges and for integral abutment bridges. 8) EN 1998-2 is also applicable to the seismic design of arched bridges, although its provisions should not be considered as fully covering these cases. NOTE - Suspension bridges and masonry bridges, moveable bridges and floating bridges are not included in the scope of this part. The assumptions of EN 1998-1-1:2024, 1.2, are assumed to be applied.

Obsah

ČSN EN 1997-1 ed. 2 (1) This document provides general rules for the design and verification of geotechnical structures. (2) This document is applicable for the design and verification of geotechnical structures outside the scope of EN 1997-3. NOTE - In this case, additional or amended provisions can be necessary.

Obsah

ČSN EN ISO 22675 This document primarily specifies a cyclic test procedure for ankle-foot devices and foot units of external lower limb prostheses, these differ in the potential to realistically simulate those loading conditions of the complete stance phase of walking from heel strike to toe-off which is relevant to the verification of performance requirements such as strength, durability and service life. This potential is of particular importance for the assessment of the performance of a variety of recent designs of ankle-foot devices and foot units with specific characteristics that will only develop under realistic conditions of loading. In addition, this document specifies a static test procedure for prosthetic ankle-foot devices and foot units, consisting of a static proof test and a static ultimate strength test, distinguished, besides other features (see NOTE), by the potential to generate heel and forefoot forces at lines of action conforming to those occurring at the instants of maximum heel and forefoot loading during the cyclic test. These loading conditions are characterized by a loading profile determined by the resultant vector of the vertical and horizontal (A-P) ground reaction forces and by a locomotion profile determined by the tibia angle. The test loading conditions specified in this document are characterized by standardized formats of these loading and locomotion profiles, applied by the cyclic and static test procedures to each sample of ankle-foot device or foot unit submitted for test. This document specifies Test Ranges (R) by specifying locomotion profiles for the cyclic test in relation to the intended use. According to the concept of the tests of this document, each sample of ankle-foot device or foot unit submitted for test is, nevertheless, free to develop its individual performance under load. This document is suitable for the assessment and testing of prosthetic ankle-foot devices and foot units with the strength requirements specified in 4.4 of ISO 22523:2006 (see NOTE). Prosthetic ankle-foot devices and foot units on the market, which have demonstrated their compliance with the strength requirements specified in 4.4 of ISO 22523:2006 through submission to the relevant tests of ISO 10328:2016, need not be retested to this document. NOTE The lines of action of the heel and forefoot forces generated by the static test procedure for Test Range 4 (R4) specified in this document approach those determining the sagittal plane loading of the test loading conditions I and II for the principal structural tests referring to ISO 10328:2016, without changing the values of the angles of the heel and forefoot platform(s) for the structural tests on ankle-foot devices and foot units specified in ISO 10328:2016.

Obsah

ČSN EN 17975 This document provides users with guidance that help manage risks related to energies & fluids during main-tenance activities on items when in use. It is the responsibility of each employer, according to the terms commonly used in the company, to: - Set out the correlation between the processes described in this document and standard practices, - Define the roles and responsibilities of the people involved in the energies & fluids lockout process. This document refers to concepts, definitions, rules, recommendations, and best practices taken from national and international documents (lockout/tagout - "administrative lockout" - Lockout/Tagout (LOTO) - Safe isolati-on) that cover activities to ensure the safety of workers with respect to energies & fluids. This document deals with the prevention of energy & fluid (e.g. powders, gases, liquids, etc.) related risks; it is noted that some are covered by specific regulations or standards, such as the electrical risk. Environmental is-sues related to energies & fluids are not in the scope of this document. Danger associated with energies & fluids can be direct (e.g. contact, absorption, etc.) or indirect by reaction (e.g. mixing, heating, etc.). The scope includes all fluids because they can be intrinsically dangerous or become dangerous. The recommendations given in this document have been drawn up with a view to ensure the safety and health of workers around hazardous energies & fluids, and situations when they are conducting actions related to ma-intenance, settings or changing formats, regardless of the type of activity. The recommendations relate to activities carried out on items. They are applied before, during and after the operation to: - The energies & fluids supplied, contained, transported, or released by items, products, - Risks related to the presence of hazardous energies & fluids for the worker and the surrounding personal. This document is a methodological guideline within the maintenance standards.

Obsah

ČSN ISO 15638-23 Tento dokument popisuje službu monitorování tlaku v pneumatikách (TPM) ze souboru norem pro jednotný rámec pro regulaci/dohled v nákladní dopravě (TARV). Stanoví formát a obsah dat přenášených do systémů TPM (TPMS) a způsoby přístupu k těmto datům. Tento dokument poskytuje popis běžných aspektů komunikace a výměny dat v rámci aplikační služby monitorování tlaku v pneumatikách, které může regulační orgán nebo provozovatel v rámci své jurisdikce požadovat nebo podporovat jako volitelnou možnost. Tento dokument popisuje následující aplikační profily: - Aplikační profil A1: periodické monitorování tlaku v pneumatikách z palubního počítače (TPM-C). - Aplikační profil A2: mimořádné monitorování tlaku v pneumatikách z palubního počítače (TPM-E). - Aplikační profil A3: monitorování tlaku v pneumatikách z palubního počítače na vyžádání (TPM-R). Aplikační profil A4: monitorování tlaku v pneumatikách externím zařízením (vozidlo může být nevybaveno zařízením pro monitorování tlaku (TPM-O)).

Obsah

ČSN EN IEC 60060-1 ed. 2 This part of IEC 60060 is applicable to dielectric tests with direct voltage, dielectric tests with alternating voltage, dielectric tests with impulse voltage and dielectric tests with combinations of the above. This document is applicable to tests on equipment having its highest voltage for equipment Um above 1,0 kV AC and 1,5 kV DC.

Obsah

ČSN EN IEC 60060-2 ed. 3 This part of IEC 60060 is applicable to complete measuring systems and to their components, used for the measurement of high voltages during laboratory and factory tests with direct voltage, alternating voltage and lightning and switching impulse voltages and combined and composite voltages as specified in IEC 60060-1. For measurements during on-site tests, see IEC 60060-3. The limits on uncertainties of measurements stated in this document apply to test levels stated in IEC 60071-1. The principles of this document apply also to higher levels but the uncertainty can be greater. This document: - defines the terms used; - describes methods to estimate the uncertainties of high-voltage measurements; - states the requirements that apply to measuring systems; - describes the methods for approving a measuring system and checking its components; - describes the procedures by which the user demonstrates that a measuring system meets the requirements of this document, including the limits set for the uncertainty of measurement.

Obsah

ČSN EN 14180 Tato norma specifikuje požadavky a zkoušky pro sterilizátory, které používají jako sterilizační činidlo směs nízkoteplotní páry a formaldehydu (LTSF) a které pracují za tlaku nižšího, než je atmosférický tlak. LTSF sterilizátory se používají pro sterilizaci tepelně labilních zdravotnických prostředků ve zdravotnických zařízeních i při komerční výrobě zdravotnických prostředků. Tato norma byla proti předchozímu vydání z r. 2014 rozsáhle technicky revidována. Norma pokrývá otázky bezpečnosti při sterilizaci formaldehydem z hlediska výsledných sterilizovaných zdravotnických prostředků, obsluhy sterilizátorů i možného dopadu na životní prostředí.

Obsah

ČSN EN 14439 This document specifies safety requirements: - for tower cranes; - for climbing systems for tower cranes erected from parts. This document applies to tower cranes for construction works, which are either erected by parts or self-erecting cranes, including mobile self-erecting tower cranes. Tower cranes for construction works are exclusively equipped with a hook as load-handling device. This document is applicable to tower cranes to be operated outdoors at ambient temperature between -20 °C and +40 °C. This document is not applicable to tower cranes, which are permanently installed on a yard or integrated in a manufacturing process, resulting in a significantly different classification of the crane and its mechanisms, or which are equipped with a grab or when a sudden release of the load is intended, resulting in significantly different load actions and number of stress cycles. This document is not applicable to mobile cranes, mobile harbour cranes, crawler cranes, slewing jib cranes, bridge and gantry cranes, offshore cranes, floating cranes, loader cranes, hand operated cranes or railway cranes. This document deals with significant hazards, hazardous situations and events relevant to tower cranes, it is used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer. This document specifies the appropriate technical measures to eliminate or reduce risks arising from the significant hazards (see Annex A). The significant hazards covered by this document are identified in Annex A. This document covers hazards related to the lifting of persons using a climbing system for tower cranes as defined in 3.6, 3.6.1 and 3.6.2. The lifting of persons by a tower crane itself is not included. The requirements related to Electromagnetic compatibility (EMC), the specific hazards due to external influence on electrical equipment, potentially explosive atmospheres and ionising radiation are not covered by this document. To improve readability, additional requirements for climbing systems are given in Annex E of this document. Additional requirements for mobile self-erecting tower cranes are given in Annex B of this document. This document is not applicable to tower cranes and climbing systems which are manufactured before the date of publication by CEN of this document.

Obsah

ČSN EN 17149-3 Tento dokument popisuje postup hodnocení únavové pevnosti na základě kumulativního poškození pro konstrukce kolejových vozidel, která jsou vyráběna, provozována a udržována v souladu s normami platnými pro aplikace v kolejových systémech. Tento dokument je použitelný pro soubory zatížení s proměnnou amplitudou s celkovým počtem cyklů vyšším než 10 000. Metoda meze únavy je mimo rozsah tohoto dokumentu. Metoda hodnocení je omezena na železné materiály a hliník. Tento dokument nedefinuje konstrukční zatěžovací stavy. Tento dokument není platný pro korozní podmínky nebo provoz za zvýšených teplot v oblasti tečení. Tento dokument je platný pro všechny druhy kolejových vozidel; nedefinuje však, v jakých případech se má použít hodnocení únavové pevnosti s využitím kumulativního poškození.

Obsah

ČSN EN IEC 62290-2 ed. 3 This part of IEC 62290 specifies the functional requirements of UGTMS (urban guided transport management and command/control systems) for use in urban guided passenger transport lines and networks. This document is applicable for new lines or for upgrading existing signalling and command control systems.

Obsah

ČSN EN IEC 60684-2 ed. 3 V této normě jsou uvedeny metody zkoušek pro ohebné izolační trubičky, včetně trubiček teplem smrštitelných, určených zejména pro izolaci elektrických vodičů a spojů elektrických zařízení, i když mohou být použity i pro jiné účely. Uvedené zkoušky jsou navrženy pro kontrolu kvality trubiček, je však zřejmé, že nemohou stanovit jednoznačně vhodnost trubiček pro impregnování nebo zapouzdření nebo pro jiné specializované aplikace. V případě nutnosti budou zkušební metody uvedené v této normě doplněny příslušnými zkouškami impregnace nebo kompatibility, aby vyhovovaly jednotlivým podmínkám.