Ämnesområden

Kommittébeteckning: SIS/TK 624/AG 01 (Aluminium)
Källa: CEN
Svarsdatum: den 3 apr 2026
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This document describes the criteria and the procedure for analysing aluminium and aluminium alloys with spark optical emission spectrometry (S-OES). This document specifies the following: — sample preparation; — operational guidelines for an optical emission spectrometer (including maintenance); — traceability of the analytical results to the International System of units: mass (kg); — assessing the uncertainty associated with each analytical result. This document refers to simultaneous spark emission spectrometers for the analysis of solid samples. This document applies to the determination of silicon, iron, copper, manganese, magnesium, chromium, nickel, zinc, titanium, boron, gallium, vanadium, beryllium, bismuth, calcium, cadmium, cobalt, lithium, sodium, phosphorus, lead, antimony, tin, strontium and zirconium in aluminium and aluminium alloys. This document is applicable to the determination of elements other than those listed above with the following conditions: a) suitable reference materials are available; and b) the instrument is suitably calibrated and equipped. The test result obtained from a spark optical emission spectrometer generally concerns an amount of less than one milligram per spark spot. The result can be used to refer to the laboratory test sample, to the aluminium or aluminium alloy melt or to the cast product.

Ämnesområden: Papper och papp
Kommittébeteckning: SIS/TK 157/AG 04 (Kemiska analysmetoder)
Källa: CEN
Svarsdatum: den 3 apr 2026
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This document specifies the preparation of a cold water extract for the determination of certain migrants in paper and board intended to come into contact with foodstuffs.

Ämnesområden: Papper och papp
Kommittébeteckning: SIS/TK 157/AG 04 (Kemiska analysmetoder)
Källa: CEN
Svarsdatum: den 3 apr 2026
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This document specifies the preparation of a hot water extract for the determination of certain migrants in paper and board intended to come into contact with foodstuffs.

Kommittébeteckning: SIS/TK 170/AG 03 (Ventilation)
Källa: CEN
Svarsdatum: den 3 apr 2026
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This document specifies dimensions, tolerances and denomination for rigid metallic ductwork used for ventilation air conditioning of buildings including test methods and performance characteristics regarding strength and leakage for ductwork, ducts and fittings in laboratory conditions. The test methods, shapes, designs and performance characteristics are applicable for ventilation ducts with circular and rectangular cross sections. The leakage test methods are also applicable to other cross sections. This document does not include ductwork made from insulation duct board, which is covered in EN 13403 [6], non-metallic ductwork, covered in EN 17192 [7] and all components that have more functions than the transport of air for example fire dampers, filter units, air terminal devices handled in EN 1751 [8] and EN 15727 [9]. This document does not include requirements for the overall system design for the air tightness which is covered in EN 16798-3 [10]. On-site tests are given in EN 12599 [11].

Kommittébeteckning: SIS/TK 999/AG 05 (Läder)
Källa: CEN
Svarsdatum: den 4 apr 2026
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ISO 5403-2:2011 specifies a method for determining the dynamic water resistance of leather by means of repeated angular compression. It is applicable to all flexible leathers but is particularly suitable for leathers intended for footwear applications. It uses a Maeser-type machine and includes an option for electronic detection.

Kommittébeteckning: SIS/TK 254 (Järnväg, tunnelbana och spårväg)
Källa: CEN
Svarsdatum: den 7 apr 2026
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This document defines terms for brakes and braking in rolling stock.

Kommittébeteckning: SIS/TK 254 (Järnväg, tunnelbana och spårväg)
Källa: CEN
Svarsdatum: den 7 apr 2026
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This document specifies the requirements for the design, dimensions, performance, and testing of a brake block that acts on the wheel tread as part of a tread brake system. NOTE In the scope of Commission Regulation (EU) N° 321/2013 (TSI WAG) the brake block is a friction element for wheel tread brakes. This document does not cover cast iron brake block requirements. This document is applicable to brake blocks of various friction level designed to be fitted to tread braked rail vehicles. This document contains the requirements for interfacing the brake block with the rail vehicle, the testing procedures in order to confirm that it satisfies the basic safety and technical interchangeability requirements, the material control procedures to ensure product quality, reliability and conformity and considers health and environmental needs.

Kommittébeteckning: SIS/TK 254 (Järnväg, tunnelbana och spårväg)
Källa: CEN
Svarsdatum: den 7 apr 2026
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This document describes the basic requirements for the verification of ultimate and serviceability limit states and the resistance to fatigue either of the noise barrier or its components by means of analytical methods and/or tests. Analytical methods can be used for the determination of the characteristic values and design values. Where sufficient information is not available, the analytical procedure can be combined with results from tests. This document provides the following types of test procedures: - test on small samples for defining detail categories, which might not be covered by Eurocodes (verification procedure A); - test on a global element for defining the limit state against fatigue (verification procedure B); - full scale tests under a given representative loading (verification procedure C) to determine fatigue resistance of the noise barrier components for defined loading conditions; verification procedure C is given as alternative to verification procedures A and B.

Kommittébeteckning: SIS/TK 421 (Artificiell intelligens)
Källa: ISO
Svarsdatum: den 15 apr 2026
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This document provides methodology for the use of statistical methods to assess robustness properties of neural networks. The document focuses on how to select, apply and manage statistical methods to assess robustness properties.