EN 589-2018 pdf download.Automotive fuelS – LPG-Requirements and test methods.
ASTM D6667—14, Standard Test Method for Determination of Total Volatile Sulfur in Gaseous Hydrocarbons and Liquefied Petroleum Gases by Ultraviolet Fluorescence
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:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
liquefied petroleum gas
LPG
petroleum gas that can be stored and/or handled in the liquid phase under moderate conditions of pressure and at ambient temperature, consisting predominantly of propane and butanes, with small proportions of propene, butenes and pentanes/pentenes
4 Sampling
Samples shall be taken as described in EN ISO 4257 and/or in accordance with the requirements of national standards or regulations for the sampling of automotive LPG. The national requirements shall be set out in detail or shall be referred to by reference in a national annex to this European Standard.
In view of the sensitivity of some of the test methods referred to in this European Standard, particular attention shall be paid to compliance with any guidance on sampling containers which is included in the test method standard.
IMPORTANT — It is important that the sampling procedure is followed in detail in order to avoid evaporation losses.
Before sampling from the dispenser hose, 20 I of product should be pumped or recirculated, in order to obtain a representative sample.
5 Pump marking
Information to be marked on dispensing pumps and nozzles used for delivering automotive LPG, and the dimensions of the label shall be in accordance with EN 16942.
6.1 General
When tested by the methods of test given in Table 1, automotive LPG fuel shall comply with the limiting requirements specified in that table.
For the minimum vapour pressure, five grades, A, H, C, 0 and E are given to allow for seasonal limits to be set nationally for each period of the year. In a national annex to this European Standard, each country shall indicate which grade(s) it adopts to achieve a minimum vapour pressure of 150 kPa (gauge) throughout the entire year and shall detail the date range in which the selected grade applies.
Liquefied petroleum gases for automotive purposes shall be free from any adulterant or contaminant that may render the fuel unacceptable for use in appropriate engines.
6.2 Water content
Liquefied petroleum gases for automotive purposes shall not contain free water at 0 °C and at the saturated vapour pressure on visual inspection
NOTE For propane rich mixtures with a minimum of 60% (rn/rn) of propane. compliance with EN ISO 13758 (2] equally satisfies this requirement.
For operational purposes it is allowed to add up to 2 000 mg/kg methanol. No other antifreeze agents shall be added.
6.3 Odour
When tested in accordance with the procedure described in Annex A, the odour of the gas shall be characteristic (i.e. distinctive and unpleasant), detectable at a concentration in air of 20 % of the lower flammability limit.
NOTE Unpleasant being subjective. the odour is to be a caution and inviting to the user to search for the leak.
For odour testing, alternative test methods may be used if this detection methods demonstrates the ability to measure the odour and/or a correlated parameter at least equal to that of the test method described in Annex A. Such alternative procedures shall be set out in detail or referred to by reference in a national annex to this European Standard.
6.4 Density
If a density report is required, EN ISO 3993 [31 or EN ISO 8973 are recommended.
6.5 Precision and dispute
6.5.1 All test methods referred to in this European Standard include a precision statement. In cases of dispute, the procedures for resolving the dispute and interpretation of the results based on test method.EN 589-2018 pdf download.