Nekovové materiály

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: 20.11.2018
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This document specifies a laboratory method for the determination of the distillation characteristics of light and middle distillates derived from petroleum and related products of synthetic or biological origin with initial boiling points above 20 °C and end-points below approximately 400 °C, at atmospheric pressure utilizing an automatic micro distillation apparatus.

This test method is applicable to such products as; light and middle distillates, automotive spark-ignition engine fuels, automotive spark-ignition engine fuels containing up to 20 % ethanol, aviation gasolines, aviation turbine fuels, (paraffinic) diesel fuels, FAME (B100), diesel blends up to 30 % fatty acid methyl esters (FAME), special petroleum spirits, naphtha’s, white spirits, kerosene’s, burner fuels, and marine fuels.

The test method is also applicable to hydrocarbons with a narrow boiling range, like organic solvents or oxygenated compounds.

The test method is designed for the analysis of distillate products; it is not applicable to products containing appreciable quantities of residual materiál.

Oblast zaměření: Řezivo
Komise : CEN/TC 38 (Durability of wood and wood-based products)
Původce: CEN
K připomínkám do: 27.11.2018
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This document specifies an evaporative ageing procedure, applicable to test specimens of wood which have been previously treated with a wood preservative, in order to evaluate any loss of effectiveness when these test specimens are subsequently subjected to biological tests.

Oblast zaměření: Řezivo
Komise : CEN/TC 38 (Durability of wood and wood-based products)
Původce: CEN
K připomínkám do: 27.11.2018
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This document specifies a method for the leaching of test specimens of wood which are used in the testing of the biological efficacy of wood preservatives.

This standard is applicable to:

a)     the pre-conditioning of test specimens prior to their being subjected to a biological test ; or

b)    assessment of loss of effectiveness by comparing the performance in a biological test of treated test specimens subjected to this procedure with others that have not undergone any leaching procedure.

NOTE          The method may also be used for pre-conditioning of wood-based panel products which may or may not have received preservative treatment.

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: 27.11.2018
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This document specifies a wavelength-dispersive X‑ray fluorescence (WDXRF) test method for the determination of the sulfur content of liquid, homogeneous automotive fuels from 5 mg/kg to 500 mg/kg, which have a maximum oxygen content of 3,7 % (m/m). This product range covers diesel fuels containing up to about 30 % (V/V) fatty acid methyl esters (FAME) and motor gasolines containing up to about 10 % (V/V) ethanol, and synthetic fuels such as Hydrotreated Vegetable Oil (HVO) and Gas To Liquid (GTL) having sulfur contents in the range of 5 mg/kg to 45 mg/kg.

NOTE 1     Sulfur contents higher than 500 mg/kg can be determined after sample dilution. However, the precision was not established for diluted samples.

Products with higher oxygen content show significant matrix effects, e.g. FAME used as biodiesel. Nevertheless, FAME may be analysed when the corresponding procedures are followed (see 5.3 and 8.1).

Other products may be analysed with this test method. However, precision data for products other than those mentioned have not been established for this document.

NOTE 2       For the purposes of this document, the terms “% (m/m)” and “% (V/V)” are used to represent the mass fraction, μ, and the volume fraction, φ, of a material respectively.

Oblast zaměření: Plasty
Komise : CEN/TC 249 (Plastics)
Původce: CEN
K připomínkám do: 27.11.2018
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Amendment

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: 28.11.2018
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This document specifies an ultraviolet (UV) fluorescence test method for the determination of the sulfur content of motor gasolines containing up to 3,7 % (m/m) oxygen [including those blended with ethanol up to about 10 % (V/V)], diesel fuels, including those containing up to about 30 % (V/V) fatty acid methylester (FAME), having sulfur contents in the range 3 mg/kg to 500 mg/kg and synthetic fuels, such as Hydrotreated Vegetable Oil (HVO) and Gas To Liquid (GTL), having sulfur contents in the range of 3 mg/kg to 45 mg/kg.

Other products can be analysed and other sulfur contents can be determined according to this test method, however, no precision data for products other than automotive fuels and for results outside the specified range have been established for this document. Halogens interfere with this detection technique at concentrations above approximately 3 500 mg/kg.

NOTE 1       Some process catalysts used in petroleum and chemical refining can be poisoned when trace amounts of sulfur-bearing materials are contained in the feedstocks.

NOTE 2       This test method can be used to determine sulfur in process feeds and can also be used to control sulfur in effluents.

NOTE 3       For the purposes of this document, the terms “% (m/m)” and “% (V/V)” are used to represent the mass fraction, μ, and the volume fraction, φ, of a material respectively.

NOTE 4       Sulfate species in ethanol do not have the same conversion factor of organic sulfur in ethanol. Nevertheless, sulfates have a conversion factor close to that of organic sulfur.

NOTE 5       It is preferable to check the nitrogen interference and to take it into account, especially when sulfur content is measured on diesel blended with cetane improver containing nitrogen. For example, alkyl nitrate, as 2‑ethyl hexyl nitrate (EHN), added as cetane improver to diesel fuel shows an enhancing effect on sulfur content that can range from (0 to 1,7) mg/kg when 2 000 mg/kg EHN is added to diesel fuel containing 10 mg/kg sulfur.

Oblast zaměření: Řezivo
Komise : CEN/TC 38 (Durability of wood and wood-based products)
Původce: CEN
K připomínkám do: 17.12.2018
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This document specifies a method for determining the efficacy of wood preservatives applied to wood by penetration treatment against wood destroying basidiomycetes cultured on a malt extract agar medium.

The method is applicable to formulated products or to their active ingredients.

NOTE          This method can be used in conjunction with an ageing procedure, for example EN 73 or EN 84.

Annex A (informative) contains an example of a test report.

Annex B (informative) contains some methods of sterilization.

Annex C (informative) contains information on the test vessels.

Annex D (informative) contains information on test fungi.

Annex E (informative) contains a recommended but non-comprehensive list of optional fungi.

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: 17.12.2018
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This document specifies an ultraviolet (UV) fluorescence test method for the determination of the sulfur content of liquefied petroleum gases (LPG) containing up to 0,35 % (m/m) halogens, and having sulfur contents in the range of 2 mg/kg to 50 mg/kg.

This test method does not detect sulfur compounds that do not vaporize under the conditions of the test.

NOTE          For the purposes of this document, the terms “% (m/m)” and “% (V/V)” are used to represent respectively the mass fraction and the volume fraction.

WARNING — The use of this standard can involve hazardous materials, operations and equipment. This standard does not purport to address all the safety problems associated with its use. It is the responsibility of users of this standard to take appropriate measures to ensure the safety and health of personnel prior to the application of the standard, and fulfil statutory and regulatory requirements for this purpose.

Oblast zaměření: Řezivo
Komise : CEN/TC 38 (Durability of wood and wood-based products)
Původce: CEN
K připomínkám do: 17.12.2018
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This document specifies a method of test for determining the natural durability of a timber against wood-destroying basidiomycetes cultured on a malt extract agar medium. The method is applicable to all timber species.

Furthermore this method can be used to test modified or treated wood. The test method described in this part 2 of EN 113 can be applied to specific wood species, commercial supplies of sawn timber, wood-based materials, wood treated with preservatives and modified wood including heat-treated wood. However, this standard is not intended to determine the effectiveness of wood preservatives used to prevent decay.

NOTE 1       Determining the efficacy of wood preservatives used to prevent decay is the scope of EN 113‑1.

NOTE 2       This method can be used in conjunction with an ageing procedure, for example EN 73 or EN 84.

Annex A (informative) contains a guidance on sampling.

Annex B (informative) contains some methods of sterilization.

Annex C (informative) contains information on the test vessels.

Annex D (informative) contains an example of a test report.

Annex E (informative) contains information on the test fungi.

Annex F (informative) contains the assessment of the results.

Oblast zaměření: Textilie
Komise : CEN/TC 189 (Geosynthetics)
Původce: CEN
K připomínkám do: 17.12.2018
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This document specifies test methods for the determination of tensile properties of polymeric geosynthetic barriers (PE (PEHD and PELLD, FPO (EVA, FPP, and PEVLD), PVC-P and EPDM).

Method A is suitable for testing polymeric geosynthetic barriers (GBRP), PVC, EPDM and FPO (EVA, FPP and PEVLD), non-reinforced (including 80gsm glass fleece) and without backing.

Method B is suitable for testing polymeric geosynthetic barriers (GBRP), PE (HDPE and PELLD), non-reinforced and without backing.

Method C is suitable for testing polymeric geosynthetic barriers (GBRP), reinforced and/or with backing.

Method D is suitable for measuring modulus (if required) of all non-reinforced products.

Oblast zaměření: Řezivo
Komise : CEN/TC 38 (Durability of wood and wood-based products)
Původce: CEN
K připomínkám do: 17.12.2018
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This document specifies a method for the determination of the eradicant action of a surface application of a fast and a slow acting wood preservative product or a deferred acting wood preservative product on timber infested with larvae of Hylotrupes bajulus (Linnaeus).

This method is applicable to:

—    organic formulations, as supplied or as prepared in the laboratory by dilution of concentrates; or

—    organic water-dispersible formulations, as supplied or as prepared in the laboratory by dilution of concentrates; or

—    water-soluble products, for example, salts.

NOTE          An ageing procedure cannot be combined with this method.

Oblast zaměření: Textilie
Komise : CEN/TC 189 (Geosynthetics)
Původce: CEN
K připomínkám do: 29.12.2018
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This standard specifies methods for screening the resistance of geotextile products to liquids while not subjecting them to external mechanical stress.

The standard is applicable to all geotextiles and geotextile related products. Method A applies particularly to polyamides and method B to polyesters and polyamides. The test results should be interpreted in the context of site conditions.

NOTE          This standard only considers conditions where the specimens are fully immersed in the liquids. Though outside the scope of this standard, the test conditions may be modified to accommodate particular applications, e. g. gaseous media. This standard does not preclude use for test specimens that are pre-treated by some method, e. g. by weathering, aqueous extraction conditions or installation damage.

Oblast zaměření: Plasty
Komise : CEN/TC 249 (Plastics)
Původce: CEN
K připomínkám do: 31.12.2018
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This part of ISO 294 specifies two two‑cavity moulds, the type D1 and D2 ISO moulds, for the injection moulding of small plates measuring 60 mm ⤬ 60 mm with a preferred thickness of 1 mm (type D1) or 2 mm (type D2), which can be used for a variety of tests. The moulds may additionally be fitted with inserts for studying the effects of weld lines on the mechanical properties (see Annex A).

Oblast zaměření: Pevná paliva
Komise : CEN/TC 383 (Sustainably produced biomass for energy applications)
Původce: CEN
K připomínkám do: 31.12.2018
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Amendment