Ämnesområden

Ämnesområden: Konstruktionskeramer
Kommittébeteckning: SIS/TK 998 (Standardiseringsarbete utan svenskt deltagande)
Källa: CEN
Svarsdatum: den 2 apr 2024
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This document describes procedures for determination of the compressive behaviour of ceramic matrix composite materials with continuous fibre reinforcement at elevated temperature in air, vacuum and inert gas atmospheres. This method applies to all ceramic matrix composites with a continuous fibre reinforcement, uni-directional (1D), bidirectional (2D) and multi-directional (xD, with x > 2), tested along one principal axis of reinforcement or off axis conditions for 2D and xD materials. This method also applies to carbon-fibre-reinforced carbon matrix composites (also known as carbon/carbon or C/C). Two cases of testing are distinguished: compression between platens and compression using grips.

Kommittébeteckning: SIS/TK 998 (Standardiseringsarbete utan svenskt deltagande)
Källa: CEN
Svarsdatum: den 2 apr 2024
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This document specifies the characteristics of square flange mounted receptacles with integrated accessory in the family of circular electrical connectors coupled by threaded ring. It applies to classes specified in Table 3. For contacts, filler plugs associated with this receptacle, see EN 2997 002. For plugs, see EN 2997 008 and EN 2997 016 and for protective covers, see EN 2997 009.

Kommittébeteckning: SIS/TK 998 (Standardiseringsarbete utan svenskt deltagande)
Källa: CEN
Svarsdatum: den 2 apr 2024
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This document specifies the required characteristics of a semi rigid coaxial cable, 50 Ω, type WD, for use in aircraft electrical systems at operating temperature between –55 °C and 200 °C and specially for high frequency up to 6 GHz. Nevertheless, if needed, −65 °C is also acceptable as shown by thermal stability test.

Kommittébeteckning: SIS/TK 998 (Standardiseringsarbete utan svenskt deltagande)
Källa: CEN
Svarsdatum: den 2 apr 2024
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1.1 Introduction This document defines common fundamental concepts for long term archiving and retrieval of mechanical CAD information for elementary parts and assemblies. It details the "fundamentals and concepts" of EN 9300-003:2012 in the specific context of long-term archiving of CAD mechanical models. Mechanical CAD information is divided into assembly structure and geometrical information, both including explicit and implicit geometrical representation, geometric dimensioning and tolerancing with form features. The EN 9300-1XX family is organized as a sequence of parts, each building on the previous ones in a consistent way, each adding a level of complexity in the CAD data model. This includes the detailing of relationships between the essential information for the different types of CAD information covered by the EN 9300-1XX family. As technology matures, additional parts will be released in order to support new requirements within the aerospace community. 1.2 In scope The present part describes: - the fundamentals and concepts for long-term archiving and retrieval of 3D mechanical CAD information; - the document structure of the EN 9300-1XX family, and the links between all these parts; - the qualification methods for long-term preservation of archived mechanical CAD information; more specially, principles for the CAD validation properties and for verification of the quality of the CAD archived file; - specifications for the preservation planning of archived CAD information; - specific functions for administration and monitoring of CAD archived mechanical models; - the definition of archive information packages for CAD data. 1.3 Out of scope The following are out of scope for this part: - long-term archiving of CAD 2D drawings; - other CAD specialization disciplines, such as electrical harnesses, composite.

Kommittébeteckning: SIS/TK 998 (Standardiseringsarbete utan svenskt deltagande)
Källa: CEN
Svarsdatum: den 2 apr 2024
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This document defines the characteristics and the tests required to qualify and control lots of high purity (≥ 99 %) aluminium coatings applied by ion-vapor deposition (IVD) on fasteners.

Ämnesområden: Bultar, skruvar
Kommittébeteckning: SIS/TK 998 (Standardiseringsarbete utan svenskt deltagande)
Källa: CEN
Svarsdatum: den 2 apr 2024
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This document specifies the characteristics of screws, pan head, offset cruciform recess, threaded to head, in corrosion resisting steel, passivated, metric. Classification: 490 MPa /425 °C

Kommittébeteckning: SIS/TK 289 (Gassystem)
Källa: CEN
Svarsdatum: den 2 apr 2024
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This document specifies requirements for the design, manufacture and marking of offshore containers with a maximum gross mass not exceeding 25 000 kg, intended for repeated use to, from and between offshore installations and ships. This document specifies only transport-related requirements.

Kommittébeteckning: SIS/TK 289 (Gassystem)
Källa: CEN
Svarsdatum: den 2 apr 2024
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This document specifies requirements for lifting sets for use with containers in offshore service, including technical requirements, marking and statements of conformity for single and multi-leg slings, including chain slings and wire rope slings.

Kommittébeteckning: SIS/TK 289 (Gassystem)
Källa: CEN
Svarsdatum: den 2 apr 2024
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This document specifies requirements for the periodic inspection, examination and testing of offshore freight and service containers, built in accordance with ISO 10855‑1, with maximum a gross mass not exceeding 25 000 kg and their associated lifting sets, intended for repeated use to, from and between offshore installations and ships. Inspection requirements following damage and repair of offshore containers are also included. Recommended knowledge and experience of staff responsible for inspection of offshore containers is given in Annex B. Recommended knowledge and experience of staff responsible for inspection of lifting sets intended for use with offshore containers is given in Annex C.

Kommittébeteckning: SIS/TK 289 (Gassystem)
Källa: CEN
Svarsdatum: den 2 apr 2024
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This document describes the specific functional requirements for the design, construction, operation, maintenance and disposal activities for safe and secure gas compressor stations. This document applies to new gas compressor stations with a Maximum Operating Pressure (MOP) over 16 bar and with a total shaft power over 1 MW. For existing compressor stations, this document applies to new compressor units. Where changes/modifications to existing installations or gas composition take place, due account can be taken of the requirements of this document. This document does not apply to gas compressor stations or compressor units operating prior to the publication of this document. For existing sites this document can be used as guidance. The purpose of this document is to: — ensure the health and safety of the public and all site personnel; — cover environmental issues; — avoid incidental damage to nearby property; and — open the gas infrastructure to accommodate renewable gases, including a possible design for hydrogen. This document specifies common basic principles for the gas infrastructure. Users of this document are expected to be aware that more detailed national standards and/or codes of practice can exist in the CEN member countries. This document is intended to be applied in association with these national standards and/or codes of practice setting out the above-mentioned basic principles. In the event of conflicts in terms of more restrictive requirements in national legislation/regulation with the requirements of this document, the national legislation/regulation takes precedence as illustrated in CEN/TR 13737 (all parts). CEN/TR 13737 (all parts) gives: — clarification of all legislations/regulations applicable in a member state; — if appropriate, more restrictive national requirements; — a national contact point for the latest information. This document does not apply to: — off-shore gas compressor stations; — gas compressor stations for compressed gas filling-stations; — customer installations downstream of the point of custody transfer; — design and construction of driver packages (see Annex C); — mobile compressor equipment. For supplies to utility services such as small central heating boilers reference is made to EN 1775. Figure 1 shows a schematic representation of compressor stations in a gas infrastructure. For further information refer to Annexes A, B, C, D, E and F. [Figure 1]

Ämnesområden: Bostadshus
Kommittébeteckning: SIS/TK 170/AG 03 (Ventilation)
Källa: CEN
Svarsdatum: den 2 apr 2024
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This document specifies general requirements and gives guidelines for ventilation systems except for industrial, medical and laboratory facilities. This document also specifies cleanliness criteria and procedures necessary in assessing and maintaining the cleanliness of ventilation systems over their lifetime from design and installation to maintenance. This document applies to both new and existing ventilation systems with, and without, air conditioning and kitchen extract systems.

Kommittébeteckning: SIS/TK 327 (Tandvård)
Källa: CEN
Svarsdatum: den 5 apr 2024
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ISO 18397:2016 specifies requirements and test methods for air-powered and electrical-powered scaler handpieces and scaler tips, including piezo, ferrostrictive and magnetostrictive type ultrasonic scalers, operated as stand-alone items or connected to dental units, for use on patients. It also contains specifications on manufacturers' instructions, marking and packaging.

Ämnesområden: Eldfasta material
Kommittébeteckning: SIS/TK 998 (Standardiseringsarbete utan svenskt deltagande)
Källa: CEN
Svarsdatum: den 5 apr 2024
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As per ISO document i.e. This document specifies three methods for the determination of the bulk density of granular refractory materials (grain density) having a grain size larger than 2 mm: — Method 1: mercury method with vacuum; — Method 2: arrested water absorption method; — Method 3: vacuum method with spin dryer option according to ISO 5017. Method 1 is intended as the reference method. NOTE Depending on the nature of the material tested, the three methods can give different results. Any statement of the value of a bulk density can therefore be accompanied by an indication of the method used or to be used in case of dispute. The same method can be used for the determination of the volume of the sample, for selecting and preparing the sample, for calculating the bulk density and for presenting the test report.

Kommittébeteckning: SIS/TK 998 (Standardiseringsarbete utan svenskt deltagande)
Källa: CEN
Svarsdatum: den 5 apr 2024
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This document specifies the performances and contact arrangements groups for bayonet coupling circular connectors, intended for use in an operating temperature range of −65 °C to 175 °C or 200 °C continuous.

Kommittébeteckning: SIS/TK 156/AG 03 (Material)
Källa: CEN
Svarsdatum: den 5 apr 2024
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This part of ISO 3451 specifies three methods for the determination of the ash of poly(vinyl chloride). The general procedures given in ISO 3451-1 are followed. For ash, method A is used. For sulfated ash, methods B and C are used. All three methods are applicable to resins, compounds and finished products. Methods B and C are applicable when lead-containing compounds are present.

Ämnesområden: Plast: allmänt
Kommittébeteckning: SIS/TK 156/AG 02 (Plaströrssystem)
Källa: CEN
Svarsdatum: den 6 apr 2024
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This document is applicable to 2-way or multi-way ball valve manufactured with thermoplastic materials to be used for the transport of pressurized water whether or not intended for human consumption (domestic systems) for applications in buildings and utility branches.       

NOTE The two-way valve is generally used for sectioning and control, the multi-way one to divert or mix the flows; information on their functionality can be found in Appendix B information of ISO 16135. The application classes are indicated in the relevant hot and cold water system standards. This document defines the dimensions necessary for the assembly of the valves, ensuring its interchangeability and defines its physical and mechanical requirements.

Ämnesområden: Flytande bränslen
Kommittébeteckning: SIS/TK 413 (Provning av flytande och gasformiga bränslen)
Källa: CEN
Svarsdatum: den 7 apr 2024
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This document specifies a method for the determination of the vapour pressure, exerted in vacuo, by volatile, low viscosity petroleum products, components, ethanol blends up to 85 % (V/V), and feedstocks using a variable volume chamber. A dry vapour pressure equivalent (DVPE) is calculated from the vapour pressure. The conditions used in the test described in this document are a vapour-to-liquid ratio of 4:1 and a test temperature of 37,8 °C. The equipment is not wetted with water during the test, and the method described is therefore suitable for testing samples with or without oxygenates; no account is taken of dissolved water in the sample. This procedure calculates the partial pressure of the air dissolved in the test portion during the triple expansion process. It is suitable for samples with a DVPE between 15,7 kPa and 97,6 kPa; vapour pressures outside this range can be measured but the precision has not been determined. This document is applicable to fuels containing oxygenated compounds up to the limits stated in the relevant Council Directive 85/536/EEC [6], and for ethanol-fuel blends up to 85 % (V/V) ethanol. NOTE For the purposes of this document, the terms "% (m/m)" and "% (V/V)" are used to represent the mass and volume fractions respectively. WARNING - The use of this document can involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of users of this document to take appropriate measures to ensure the safety and health of personnel prior to application of the standard, and to determine the applicability of any further restrictions for this purpose.

Ämnesområden: Svetsfogar
Kommittébeteckning: SIS/TK 125 (Oförstörande provning)
Källa: CEN
Svarsdatum: den 7 apr 2024
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ISO 17635:2016 gives guidelines for the choice of non-destructive testing (NDT) methods for welds and evaluation of the results for quality control purposes, based on quality requirements, material, weld thickness, welding process and extent of testing. ISO 17635:2016 also specifies general rules and standards to be applied to the different types of testing, for either the methodology or the acceptance levels for metallic materials. Acceptance levels cannot be a direct interpretation of the quality levels defined in ISO 5817 or ISO 10042. They are linked to the overall quality of the produced batch of welds. Requirements for acceptance levels for NDT comply with quality levels stated in ISO 5817 or ISO 10042 (moderate, intermediate, stringent) only on a general basis and not in detail for each indication. Annex A gives correlations between quality, NDT and acceptance level standards. Annex B gives an overview of the standards linked to quality levels, acceptance levels and NDT methods.

Kommittébeteckning: SIS/TK 435/AG 05 (Livsmedelsanalyser)
Källa: CEN
Svarsdatum: den 8 apr 2024
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This document covers instrumental analysis by elemental analyser-isotope ratio mass spectrometry (EA-IRMS) of food materials to determine C and/or N isotope ratios. The isotope ratios obtained by following this document are expressed as δ13C and/or δ15N values relative to international measurement standards. Sample preparation is not included within this document. It is assumed that the food sample has been pre-treated as necessary and homogenized. Similarly, the interpretation of the obtained isotope delta values is not covered by this document. Following this protocol will result only in isotope delta values for the sample materials. Solid and/or liquid sample materials can be analysed following this document. Although other instrumental techniques can be applied to determine δ13C and/or δ15N values in food materials, these other techniques are not covered by this document.