ISO 19230:2020 pdf download

ISO 19230:2020 pdf download.Gas analysis — Sampling guidelines
1 Scope
This document specifies the general provisions and gives the basic definitions of terms relating to sampling for gas analysis, including sampling devices, sampling methods, sampling technical considerations, and sampling safety. This document applies to both direct and indirect sampling of gas in pressure receptacles and pipelines, including pure gases and gas mixtures. Compressed and liquefied gases are both considered. This document applies to the sampling of processed gases and does not involve gas treatment processes. The sampling procedures specified are not intended for the sampling of special products which are the subject of other International Standards, such as liquefied petroleum gases (see ISO 4257) and gaseous natural gases (see ISO 10715).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3165, Sampling of chemical products for industrial use — Safety in sampling
ISO 16664, Gas analysis — Handling of calibration gases and gas mixture — Guidelines
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1 gas
materials which are present completely in gaseous form at a temperature of 20 °C under the absolute pressure of 0,101 3 MPa
Note 1 to entry: The materials here include single mediums and mixtures.
3.2 compressed gas
gas (3.1) which, when packaged under pressure for transport, is entirely gaseous at all temperatures above −50 °C
Note 1 to entry: This category includes all gases with a critical temperature less than or equal to −50 °C.
[SOURCE: ISO 10286:2015, 705, modified — Modified to include all temperatures above −50 °C.]
3.3 liquefied gas
gas (3.1) which, when packaged under pressure for transport, is partially liquid at temperatures above −50 °C
[SOURCE: ISO 10286:2015, 706, modified — Modified to specify that gas is packaged under pressure.]
3.4 high pressure liquefied gas
gas (3.1) with a critical temperature between −50 °C and +65 °C
[SOURCE: ISO 10286:2015, 708]
3.6 toxic gas
gas (3.1) which is known to be so toxic or corrosive to humans to pose a health hazard or which is presumed to be toxic or corrosive to humans because it has a lethal concentration 50 (3.38) value for acute toxicity equal to or less than 5 000 ml/m 3 (ppm)
Note 1 to entry: Other risks, such as tissue corrosiveness, are sometimes associated.
[SOURCE: ISO 10286:2015, 716]