Nekovové materiály

Oblast zaměření: Plasty
Komise : CEN/TC 249 (Plastics)
Původce: CEN
K připomínkám do: 24.09.2019
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This document specifies a method for the determination of the ultimate anoxic biodegradability of plastics made of organic compounds, where the amount of the produced nitrogen and carbon dioxide at the end of the test is measured.

The test substance is exposed to an inoculum stemming from the denitrification tank of a wastewater treatment plant. Testing is performed under defined laboratory conditions.

Oblast zaměření: Trubky z plastů
Komise : CEN/TC 155 (Plastics piping systems and ducting systems)
Původce: CEN
K připomínkám do: 30.09.2019
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This part of ISO 6259 specifies a method of determining the tensile properties of pipes made of  unplasticized poly(vinyl chloride) (PVC-U), oriented unplasticized poly(vinyl chloride) (PVC-O), chlorinated poly(vinyl chloride) (PVC-C) and high-impact poly(vinyl chloride) (PVC-HI, PVC-M or PVC-A), and in particular the following properties:

—    the stress at yield and stress at break;

—    the elongation at break.

NOTE       The general method of test for the determination of the tensile properties of thermoplastics pipes is given in ISO 6259‑1.

This part of ISO 6259 also gives, for information purposes only, the corresponding basic specifications in annexes A, B, C and D.

Oblast zaměření: Kůže
Komise : CEN/TC 289 (Leather)
Původce: CEN
K připomínkám do: 7.10.2019
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This document specifies a method for determining the wet or dry flex resistance of leather and finishes applied to leather. It is applicable to all types of flexible leather below 3,0 mm in thickness.

Oblast zaměření: Trubky z plastů
Komise : CEN/TC 155 (Plastics piping systems and ducting systems)
Původce: CEN
K připomínkám do: 14.10.2019
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This document specifies the requirements for solid wall pipes with smooth internal and external surfaces, extruded from the same formulation throughout the wall, fittings and the system of unplasticized poly(vinyl chloride) (PVC-U) piping systems intended for soil and waste discharge applications (low and high temperature):

—    inside buildings (application area code “B”);

—    for both inside buildings and buried in ground within the building structure (application area code “BD”).

NOTE 1       The intended use is reflected in the marking of products by “B” or “BD”.

NOTE 2       Multilayer pipes with different formulations throughout the wall and foamed core pipes are covered by EN 1453-1 [1].

NOTE 3       For use buried in ground within the building structure are intended only those components (marked with “BD”) with nominal outside diameters equal to or greater than 75 mm.

NOTE 4       EN 476 [2] specifies the general requirements for components used in discharge pipes, drains and sewers for gravity systems. Pipes and fittings conforming to this standard fully meet these requirements.

This document is also applicable to PVC-U pipes, fittings and the system intended for the following purposes:

—    ventilating part of the pipework in association with discharge applications;

—    rainwater pipework within the building structure.

This document also specifies the test parameters for the test method that are referred to.

This document covers a range of nominal sizes, a range of pipes and fittings series and gives recommendations concerning colours.

NOTE 5       It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.

For external above ground application additional requirements depending on the climate should be agreed between the manufacturer and the user.

NOTE 6       Pipes, fittings and other components conforming to any of the plastics product standards listed in Annex B can be used with pipes and fittings conforming to this document, provided they conform to the requirements for joint dimensions given in Clause 6 and to the requirements of Table 25.

Oblast zaměření: Plasty
Komise : CEN/TC 249 (Plastics)
Původce: CEN
K připomínkám do: 21.10.2019
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This document specifies characteristics for compact laminate panels and HPL composite panels both for non-structural uses in interior or external wall and ceiling finish applications (including in suspended ceiling).

This document deals with compact laminate panels of thickness 2 mm and greater.

The compact laminate panels are produced by using a high pressure process and the HPL composite panels are produced bonding an HPL sheet to a substrate.

This document covers compact laminate panels with the following types of laminates:

—    compact laminates, as defined in EN 438‑4:2016;

—    exterior-grade compact laminates, as defined in EN 438‑6:2016;

—    pearlescent compact laminates, metal compact laminates and wood veneer compact laminates, as defined in EN 438‑8:2018;

—    coloured core layer compact laminates and metal reinforced core layer compact laminates, as defined in EN 438‑9:2017.

This document covers full size and cut-to-size compact laminate panels and HPL composite panels, e.g. tiles and sidings.

This document specifies only compact laminate panels and HPL composite panels mechanically fixed using e.g. screws or rivets.

Both the compact laminate panels and HPL composite panels may contain flame retardant to improve their reaction to fire performance.

This document also specifies provisions for the assessment and verification of constancy of performance (AVCP) of the characteristics and includes provisions for marking these panels.

This document does not cover:

a)     HPL sheets less than 2 mm thick as defined in EN 438‑3:2016, EN 438‑8:2018 or EN 438‑9:2017, which are not glued on a substrate;

b)    overlaid or veneered wood-based panels, where the overlay/veneer is not an HPL;

c)     HPL composite panels intended for use as floor coverings;

d)    panels used for fire protection of walls or ceilings;

e)     performances of installed systems for walls and ceilings with compact or composite high pressure laminate panels.

Oblast zaměření: Ropné produkty
Komise : CEN/TC 343 (Solid recovered fuels)
Původce: CEN
K připomínkám do: 25.10.2019
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This document defines terms and definitions concerned in all standardization work within the scope of ISO/TC 300, i.e. terms used in the field of production and trade of solid recovered fuels that are prepared from non-hazardous waste. Terminology boundaries are described in Figure 1.

Figure 1 — Terminology boundaries for solid recovered fuels

NOTE       Solid biofuels are covered by the scope of ISO/TC 238.

Definitions in other standards with a scope different from the scope of this document can be different from the definitions in this document.

Oblast zaměření: Textilie
Komise : CEN/TC 248 (Textiles and textile products)
Původce: CEN
K připomínkám do: 27.10.2019
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This document specifies a common method for the quantitative chemical analysis of various mixtures of fibres. This method and the methods described in the other parts of ISO 1833[eXtyles1]  are applicable, in general, to fibres in any textile form. Where certain textile forms are excepted, these are listed in the scope of the appropriate part.

 

Oblast zaměření: Textilie
Komise : CEN/TC 248 (Textiles and textile products)
Původce: CEN
K připomínkám do: 27.10.2019
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This document specifies methods of quantitative analysis of various ternary mixtures of fibres.

The field of application of each method for analysing mixtures, specified in the parts of ISO 1833[eXtyles1] , indicates the fibres to which the method is applicable.

This document is applicable to mixtures of fibres with more than three components provided that the combination of test methods leads back to simple cases of fibre mixtures.

Oblast zaměření: Ropné produkty
Komise : CEN/TC 19 (Gaseous and liquid fuels, lubricants and related products of petroleum, synthetic and biological origin)
Původce: CEN
K připomínkám do: 5.11.2019
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This document establishes the rating of diesel fuel oil in terms of an arbitrary scale of cetane numbers (CNs) using a standard single cylinder, four-stroke cycle, variable compression ratio, indirect injected diesel engine. The CN provides a measure of the ignition characteristics of diesel fuel oil in compression ignition engines. The CN is determined at constant speed in a pre-combustion chamber-type compression ignition test engine. However, the relationship of test engine performance to full scale, variable speed and variable load engines is not completely understood.

This document is applicable for the entire scale range from 0 CN to 100 CN but typical testing is in the range of 30 CN to 65 CN. An interlaboratory study executed by CEN in 2013 (10 samples in the range 52,4 CN to 73,8 CN)[1] confirmed that paraffinic diesel from synthesis or hydrotreatment, containing up to a volume fraction of 7 % fatty acid methyl ester (FAME) can be tested by this test method and that the precision is comparable to conventional fuels.

This test can be used for unconventional fuels such as synthetics, vegetable oils, etc. However, the relationship to the performance of such materials in full scale engines is not completely understood.

Samples with fluid properties that interfere with the gravity flow of fuel to the fuel pump or delivery through the injector nozzle are not suitable for rating by this method.

NOTE          This document specifies operating conditions in SI units but engine measurements are specified in inch-pound units because these are the historical units used in the manufacture of the equipment, and thus some references in this document include these units in parenthesis.