Bamboo structures — Engineered bamboo products — Test methods for determination of physical and mech...
This document specifies test methods suitable for determining the following mechanical properties of engineered bamboo products:
a) modulus of elasticity in bending;
b) shear modulus;
c) bending strength;
d) modulus of elasticity in tension parallel to the fibre;
e) tension strength parallel to the fibre;
f) modulus of elasticity in compression parallel to the fibre;
g) compression strength…
High-voltage switchgear and controlgear - Part 202: AC prefabricated substations for rated voltages ...
IEC 62271-202:2022 specifies the service conditions, rated characteristics, general structural requirements and test methods of enclosed high-voltage prefabricated substations. These prefabricated substations are cable-connected to AC high-voltage networks with an operating voltage up to and including 52 kV and power frequencies up to and including 60 Hz. They can be manually operated from inside…
Metallic materials — High strain rate torsion test at room temperature
This document specifies terms and definitions, symbols and designations, principle, apparatus, test piece, procedure, data processing, evaluation of test result, test report and other contents for the torsion test at high strain rates for metallic materials by using torsional split Hopkinson bar (TSHB).
Electricity metering - Payment systems - Part 31: Particular requirements - Static payment meters fo...
IEC 62055-31:2022 CMV contains both the official standard and its commented version. The commented version provides you with a quick and easy way to compare all the changes between IEC 62055-31:2022 edition 2.0 and the previous IEC 62055-31:2005 edition 1.0. Furthermore, comments from IEC TC 13 experts are provided to explain the reasons of the most relevant changes, or to clarify any part of the…
Electricity metering - Payment systems - Part 31: Particular requirements - Static payment meters fo...
IEC 62055-31:2022 applies to newly manufactured, static watt-hour payment meters of accuracy classes 0,5, 1 and 2 for direct connection, for the measurement of alternating current electrical energy consumption of a frequency in the range 45 Hz to 65 Hz that include a supply control switch for the purpose of interruption or restoration of the electricity supply to the load in accordance with the…
Optical fibres - Part 1-1: Measurement methods and test procedures - General and guidance
IEC 60793-1-1:2022 is available as IEC 60793-1-1:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60793-1-1:2022 lists and gives guidance on the use of documents giving uniform requirements for measuring and testing optical fibres, thereby assisting in the inspection of fibres and…
Rubber compounding ingredients — Carbon black — Determination of sulfur content
This document specifies two methods for the determination of the total sulfur in all types of carbon black for use in the rubber industry:
— Method A, using a combustion furnace;
— Method B, using an automatic analyser.
With respect to safety aspects and test precision, it is preferable to use automatic systems. Method B is therefore the preferred method. Classical chemical analysis (Method…
Space systems — Launch pad and integration site operational documents
This document establishes requirements for the nomenclature, structure and contents of operational documents used at a launch pad or integration site.
When there is international participation, partnership or cooperation in the design, development, installation, test, activation or operation of a launch pad or integration site, this document applies to the development of the operational documents…
Microbiology of the food chain — Whole genome sequencing for typing and genomic characterization of ...
This document specifies the minimum requirements for generating and analysing whole genome sequencing (WGS) data of bacteria obtained from the food chain. This process can include the following stages:
a) handling of bacterial cultures;
b) axenic genomic DNA isolation;
c) library preparation, sequencing, and assessment of raw DNA sequence read quality and storage;
d) bioinformatics analysis for…
Manganese ores and concentrates — Determination of manganese content — Potentiometric method
This document specifies a potentiometric method for the determination of the manganese content of manganese ores and concentrates with manganese content equal to or greater than a mass fraction of 15 %.
