Kemiteknik

Kommittébeteckning: SIS/TK 121 (Bestämning av mikrostruktur i stål)
Källa: ISO
Svarsdatum: den 1 jun 2021
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This document describes the guideline for misorientation analysis to assess mechanical damage such as fatigue and creep induced by plastic and/or creep deformation for metallic materials by using electron backscatter diffraction (EBSD) technique. This international standard defines misorientation parameters and specifies measurement conditions for such mechanical damage assessment. This standard is recommended to evaluate mechanical damage of austenitic stainless steel, which is widely used for various components of power plants and other facilities.

In this document, the mechanical damage means the damage which causes the fracture of structural materials due to external overload, fatigue and creep; excepting the chemical and thermal damages themselves.

Kommittébeteckning: SIS/TK 349 (Rengöring, desinfektion och sterilisering)
Källa: CEN
Svarsdatum: den 4 jun 2021
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This document specifies a test method and the minimum requirements for the microbicidal activity of a chemical product which intended use is the chemical treatment of textiles in domestic area in order to evaluate the hygiene performance of domestic laundry products within domestic washing machines at low temperatures (≤40°C). This procedure will not apply to certain types of laundry disinfection technologies which require specific devices (i.e active substances generated in situ through the use of specific devices). This method is not limited to certain types of textiles, types of products or steps in the washing cycle.

This document can also apply to products that are used for chemical disinfection of textiles in food, industrial and institutional areas (e.g. food processing, shops, sport rooms, offices, hotels, workwear, foodstuff areas or similar institutions) but not when the disinfection is medical indicated (medical area).

NOTE This method corresponds to a phase 2, step 2 test (see EN 14885).

EN 14885 specifies in detail the relationship of the various tests to one another and to "use recommendations".

Kommittébeteckning: SIS/TK 413 (Provning av flytande och gasformiga bränslen)
Källa: CEN
Svarsdatum: den 7 jun 2021
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This document specifies a method for determining the total acidity, calculated as acetic acid, of ethanol to be used in petrol blends. It is applicable to ethanol having total acid contents of between 0,003 % (m/m) and 0,015 % (m/m).

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

WARNING — 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 the user of this document to take appropriate measures to ensure the safety and health of personnel prior to the application of the document, and to fulfil statutory and regulatory restrictions for this purpose.

Kommittébeteckning: SIS/TK 296 (Gasflaskor)
Källa: CEN
Svarsdatum: den 7 jun 2021
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This document provides:
— for pure gases and some liquids, a complete list indicating their corrosiveness;
— for gas mixtures, a calculation method, in the absence of experimental data, relating to the corrosiveness of each of their components;
in order to determine the corrosiveness of gases and gas mixtures so that a suitable outlet connection can be assigned to each of them.