Normy

Obsah

ČSN EN 14620-4 This document specifies the requirements for materials, design and installation of the insulation of refrigerated liquefied gas (RLG) storage tank systems. RLG storage tank systems store liquefied gas with a low boiling point, i.e. below normal ambient temperature. The concept of storing such products in liquid form and in non-pressurized tanks therefore depends on the combination of latent heat of vaporization and thermal insulation. Consequently, thermal insulation for RLG storage tank systems is not an ancillary part of the containment system (as for most ambient atmospheric hydrocarbon tanks) but it is an essential component and the storage tank system cannot operate without a properly designed, installed and maintained insulation system. The main functions of the insulation in RLG storage tank systems are: - to maintain the boil off due to heat in-leak at or below the specified limits; - to limit the thermal loading of the outer tank components, so to prevent both their sudden damage and premature ageing (e.g. due to external condensation and ice formation); - to prevent damage by frost heave of the foundation/soil beneath the tank base slab (in combination with the slab heating system for tanks resting at grade); - to minimize condensation and icing on the outer surfaces of the tank. A wide range of insulation materials is available. However, the material properties differ greatly amongst the various generically different materials and also within the same generic group of materials. Therefore, within the scope of this document, only general guidance on selection of materials is given. NOTE - For general guidance on selection of materials, see Annex A. This document deals with the design and manufacture of site built, vertical, cylindrical, flat-bottomed tank systems for the storage of refrigerated, liquefied gases with operating temperatures between 0 °C and -196 °C.

Obsah

ČSN EN 1991-1-1 1) EN 1991 1 1 gives rules on the following aspects related to actions, which are relevant to the structural design of buildings and civil engineering works including some geotechnical aspects: - specific weight of construction materials and stored materials; - self-weight of construction works; - imposed loads for buildings. 2) Mean values for specific weight of specific construction materials, additional materials for bridges, stored materials and products are given. In addition, for specific materials and products the angle of repose is provided. 3) Methods for the assessment of the characteristic values of self-weight of construction works are given. 4) Characteristic values of imposed loads are given for the following areas in buildings according to the category of use: - residential, social, commercial and administration areas; - areas for archive, storage and industrial activities; - garage and vehicle traffic areas (excluding bridges); - roofs; - stairs and landings; - terraces and balconies. NOTE - The loads on traffic areas given in this standard refer to vehicles up to a gross vehicle weight of 160 kN. Further information can be obtained from EN 1991 2. 5) Characteristic values of horizontal imposed loads on parapets and partition walls acting as barriers are provided. NOTE - Forces due to vehicle impact are specified in EN 1991 1 7 and EN 1991 2. Assumptions: 1) The general assumptions of EN 1990 apply. 2) EN 1991 1 1 is intended to be used with EN 1990, the other parts of EN 1991 and the other Euro-code parts for the design of structures.

Obsah

ČSN EN 1991-1-1 1) EN 1991 1 1 gives rules on the following aspects related to actions, which are relevant to the structural design of buildings and civil engineering works including some geotechnical aspects: - specific weight of construction materials and stored materials; - self-weight of construction works; - imposed loads for buildings. 2) Mean values for specific weight of specific construction materials, additional materials for bridges, stored materials and products are given. In addition, for specific materials and products the angle of repose is provided. 3) Methods for the assessment of the characteristic values of self-weight of construction works are given. 4) Characteristic values of imposed loads are given for the following areas in buildings according to the category of use: - residential, social, commercial and administration areas; - areas for archive, storage and industrial activities; - garage and vehicle traffic areas (excluding bridges); - roofs; - stairs and landings; - terraces and balconies. NOTE - The loads on traffic areas given in this standard refer to vehicles up to a gross vehicle weight of 160 kN. Further information can be obtained from EN 1991 2. 5) Characteristic values of horizontal imposed loads on parapets and partition walls acting as barriers are provided. NOTE - Forces due to vehicle impact are specified in EN 1991 1 7 and EN 1991 2. Assumptions: 1) The general assumptions of EN 1990 apply. 2) EN 1991 1 1 is intended to be used with EN 1990, the other parts of EN 1991 and the other Euro-code parts for the design of structures.

Obsah

ČSN EN 1991-1-1 1) EN 1991 1 1 gives rules on the following aspects related to actions, which are relevant to the structural design of buildings and civil engineering works including some geotechnical aspects: - specific weight of construction materials and stored materials; - self-weight of construction works; - imposed loads for buildings. 2) Mean values for specific weight of specific construction materials, additional materials for bridges, stored materials and products are given. In addition, for specific materials and products the angle of repose is provided. 3) Methods for the assessment of the characteristic values of self-weight of construction works are given. 4) Characteristic values of imposed loads are given for the following areas in buildings according to the category of use: - residential, social, commercial and administration areas; - areas for archive, storage and industrial activities; - garage and vehicle traffic areas (excluding bridges); - roofs; - stairs and landings; - terraces and balconies. NOTE - The loads on traffic areas given in this standard refer to vehicles up to a gross vehicle weight of 160 kN. Further information can be obtained from EN 1991 2. 5) Characteristic values of horizontal imposed loads on parapets and partition walls acting as barriers are provided. NOTE - Forces due to vehicle impact are specified in EN 1991 1 7 and EN 1991 2. Assumptions: 1) The general assumptions of EN 1990 apply. 2) EN 1991 1 1 is intended to be used with EN 1990, the other parts of EN 1991 and the other Euro-code parts for the design of structures.

Obsah

ČSN 73 0895 Norma stanovuje zkušební metody a požadavky pro dosažení funkčnosti nechráněných kabelových tras a rozváděčů nízkého napětí v podmínkách požáru pro zabezpečení trvalé dodávky elektrické energie podle příslušného právního předpisu. Zkušební metody jsou použitelné pro elektrické sdělovací, signální, datové a silové kabely a vodiče pro jmenovité napětí do 1 kV a pro optické kabely, pro kabelové nosné systémy a jejich součásti pro vedení kabelů, jako jsou kabelové lávky, kabelové rošty, přípojnice, svorkovnice, spojky, rozdělovače, odbočné a instalační krabice, nosná zařízení, držáky, příchytky, stojiny, výložníky, závěsy, háky apod. a pro rozváděče nízkého napětí. Norma na základě výsledků zkoušky stanovuje klasifikaci funkčnosti při požáru pro konkrétní způsob uložení kabelů a/nebo pro konkrétní typ rozváděče. POZNÁMKA 1 - Uložení kabelů do chráněné kabelové trasy není předmětem této normy. Zkouška zachování funkčnosti požárně ochranných systémů, jako jsou např. kabelové kanály, je uvedena v ČSN EN 1366-11+A1. Podmínky uložení do stavební konstrukce jsou uvedeny v ČSN 73 0848. POZNÁMKA 2 - Kabely se jmenovitým napětím přesahujícím 1 kV nejsou předmětem této normy, je však možné je uložit do chráněné kabelové trasy. POZNÁMKA 3 - Posouzení odolnosti nechráněných elektrických kabelů vůči ohni (P klasifikace) není předmětem této normy. Tuto problematiku řeší ČSN EN 50577. POZNÁMKA 4 - Posouzení funkčnosti kabelových systémů v souvislosti s poklesem napětí, který je způsobený zvýšením odporu metalických jader kabelů vlivem vysoké teploty, není předmětem této normy. Návod na hodnocení vlivu požáru na úbytky napětí a jejich kompenzaci je uveden v bibliografii [1].

Obsah

ČSN EN 1996-2 ed. 2 (1) This document gives basic rules for the selection of materials and execution of masonry to enable it to comply with the design assumptions of the other parts of Eurocode 6. (2) This document deals with ordinary aspects of masonry design and execution including: - selection of masonry materials; - factors affecting the performance and durability of masonry; - masonry detailing, joint finishes, movement joints, resistance to moisture penetration; - storage, preparation and use of materials on site; - execution of masonry; - masonry protection during execution. (3) This document does not cover the following items: - aesthetic aspects; - applied finishes. Assumptions: (1) The assumptions of EN 1990 apply to this document. (2) This document is intended to be used together with EN 1990, EN 1991, EN 1996-1-1, EN 1996-1-2 and EN 1996-3. (3) The design of masonry is carried out in accordance with EN 1996-1-1.

Obsah

ČSN EN 13036-8 This document specifies the mathematical processing of digitized transverse profile measurements to produce indices in the transverse direction for unevenness, other defects and crossfall. The document describes the calculation methods of the indices, such as irregularities, (1) rut depth, (2) ridge height, (3) water depth and area, (4) crossfall, and how to evaluate and report the indices. It also describes possibilities to do further analysis to examine defects and problems on the road that can be seen in the transverse profile. The latter is described in Annex E.

Obsah

ČSN ISO 11956 Tento dokument stanovuje požadavky a doporučení pro dobrodružný cestovní ruch zahrnující cykloturistiku (např. silniční kolo, horské kolo, gravelové kolo, cykloturistika nalehko, fatbike, včetně kol s elektrickým pohonem a horských kol s elektrickým pohonem), týkající se bezpečnosti účastníků, vedoucích a asistentů. Tento dokument rovněž stanovuje kritéria týkající se charakteristik a úrovní obtížnosti pro klasifikaci cykloturistických tras. Tento dokument se vztahuje na cykloturistiku nabízenou jako turistický produkt. Návrh produktu cestovního ruchu zahrnuje fázi plánování a vývoje produktu, která není v tomto dokumentu zahrnuta. Některé produkty cestovního ruchu zahrnují cykloturistiku v kombinaci s dalšími službami cestovního ruchu (např. transfery, stravování, ubytování), ale tento dokument se vztahuje pouze na cykloturistiku. Další služby cestovního ruchu nejsou předmětem této normy. Tento dokument se vztahuje na všechny poskytovatele aktivit dobrodružného cestovního ruchu, kteří nabízejí turistické produkty zahrnující cykloturistiku. Tento dokument se nevztahuje na sportovní cyklistické aktivity (včetně horské cyklistiky v bikeparcích nebo lyžařských areálech), půjčování jízdních kol nebo sdílení jízdních kol (to znamená půjčovny jízdních kol pro městskou nebo venkovskou mobilitu) bez účelu dobrodružné turistiky. Tento dokument se nevztahuje na údržbu a opravu jízdního kola.

Obsah

ČSN EN 17681-1 This document specifies a test method, including the degradation of certain side-chain fluorinated polymers during the extraction with simultaneous alkaline hydrolysis, and using liquid chromatography (LC) and tandem mass spectrometry (MS/MS) for identification and quantification of certain per- and polyfluoroalkyl substances (PFAS). The document is applicable to all materials of textile products. Table 2 indicates a list of target PFAS which can be analysed with this document. PFAS of Table 2 marked with the footnote e) and footnote f) undergo alkaline hydrolysis and only their per- or polyfluorinated degradation products such as PFOA or n:2 fluorotelomer alcohols (n:2 FTOHs, n = 4, 6, 8, 10) can be determined. Through the methods outlined in the informative Annex E and Annex F, free n:2 FTOHs, PFOA and non-polymeric PFAS of Table 2 marked with the footnote e) and footnote f), that are not stable to alkaline hydrolysis, can be identified and quantified. Certain side-chain fluorinated polymers release n:2 FTOHs (n = 4, 6, 8, 10) under the described extraction conditions. Since these side-chain fluorinated polymers can be PFOA or C9-C14 PFCA-related substances restricted by the EU-POPs [1] or EU-REACH [2] regulations, the amounts of released n:2 FTOHs can be used to indirectly assess whether the concentration of the aforementioned side-chain fluorinated polymers exceed limits for PFOA or C9-C14 PFCA-related substances. This document is also applicable to the determination of further PFAS, provided that the method is validated with the additional substances and that these PFAS are stable to alkaline hydrolysis and dehydrofluorination.

Obsah

ČSN EN 16732 This document specifies performance levels and test methods for the following characteristics of slide fasteners made from interlocking components mounted on tapes: strengths of puller attachment, closed-end slide fastener bottom stop, top stop, open-end slide fastener box, reciprocating mechanism, closed slide fastener when extended laterally, open-end attachment when extended laterally, slider locking device, and open-end slide fastener single stringer slider retention and slider resistance to torque. NOTE - The tests specified in Annexes B to K have been specifically devised to permit their direct application to finished slide fasteners with a view to giving the user reasonable assurance that a slide fastener conforming to the requirements of this document can satisfactorily fulfil its intended purpose. Annex L gives information about sampling procedures for bulk quantities of slide fasteners. In addition, performance levels are also specified for colour fastness to washing, dry cleaning and water, and for dimensional stability to washing and dry cleaning. This document is applicable to all different types of slide fasteners for general use and is not applicable to slide fasteners for specialist purposes (for example: pressure sealed slide fasteners for diving suits).

Obsah

ČSN EN 13203-1 This document is applicable to gas-fired appliances producing domestic hot water. It applies to both instantaneous and storage appliances; water-heaters and combination boilers that have: - heat input not exceeding 70 kW; and - hot water storage capacity (if any) not exceeding 500 l. A combination boiler can be fitted with a storage tank or not. The domestic hot water production can be integrated or coupled. The product is considered as a single appliance. This document specifies in qualitative and quantitative terms the performance in delivery of domestic hot water for a selected variety of uses. It also gives a system for presenting the information to the user.

Obsah

ČSN EN ISO 14644-5 (12 5301) This document specifies requirements for the establishment of an operations control programme (OCP) to ensure efficient cleanroom operation within specified cleanliness levels. The OCP includes management of personnel, entry and exit of personnel and materials, cleaning, maintenance and monitoring. This document specifies operational requirements that relate to: - providing a system that specifies policies and operational procedures for maintaining cleanliness levels; - training of personnel; - transferring, installing and maintaining stationary equipment; - transferring material and portable equipment into and out of the cleanroom; - maintaining a personnel management programme that includes a gowning programme; - maintaining a cleaning programme that addresses special cleaning; - maintaining a cleanroom maintenance programme; - establishing an appropriate monitoring programme. This document gives additional information in annexes for: - personnel management; - gowning; - training; - cleaning. This document does not specifically address biocontamination control. For details on this topic, see ISO 14698-1 and ISO 14698-2. This document does not apply to the following topics: - aspects of health and safety management that have no direct bearing on contamination control; - specific requirements for individual industries; - specific requirements for equipment and materials used or associated with processes and products; - design details of equipment; - cleaning agent compatibility with cleanroom materials.