Suomen Standardisoimisliitto SFS

This document defines a Micro Gas Chromatography method for the fast and quantitative analysis of five types of terpenes in biomethane, allowing their monitoring online or offline, and covering the range from 1 ppm mol to 10 ppm mol.

This European Standard specifies, the requirements and test methods concerning the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners and are hereafter referred to as 'boilers'.Where the word boiler is used, this is to be read as the boiler including its connecting ducts, ducts and terminals, if any.This document is to be used in conjunction with FprEN 15502-1:2021This European Standard covers gas-fired central heating boilers type B11, B11BS, B12, B12BS, B13, B13BS:NOTE For further background information on appliance types see EN 1749:2020a) that have a nominal heat input (on the basis of net calorific value) not exceeding 70 kW;b) that use one or more combustible gases of the three gas families at the pressures stated in EN 437:2018;c) where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;d) where the maximum operating pressure in the water circuit does not exceed 6 bar;e) which are declared in the technical instructions to be either a 'low temperature boiler' or a 'standard boiler'. If no declaration is given the boiler is to be considered a 'standard boiler';f) which are intended to be installed inside a building or in a partially protected place;g) which are intended to produce also hot water either by the instantaneous or storage principle, as a single unit.h) which are designed for either sealed water systems or for open water systems.For applications within the scope of the PED further requirements may be necessary (e.g. situations where the maximum allowable temperature exceeds 110 °C, or where volume times maximum allowable pressure is over 50 bar x litres).NOTE This standard provides requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard, the risk associated with this alternative construction needs to be assessed.An example of an assessment methodology, based upon risk assessment, is given in Clause 11.This standard does not cover all the requirements for:i) appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex AB);j) appliances using flue dampers;k) appliances that have a nominal heat input (on the basis of net calorific value) exceeding 70 kW;l) appliances of the types A, B14, B2, B3, B4, B5 and C;m) appliances intended to be connected to a (common) flue having mechanical extraction;n) appliances with gas/air ratio control;o) modular boilers;p) boilers which can give rise to condensation under certain circumstances;q) boilers intended to be installed in a room with a foreseeable negative pressure relative to the pressure in the flue system;r) surface temperatures of external parts particular to children and elderly people;s) appliances that are intended to burn natural gases of the second family where hydrogen is added to the natural gass;t) boilers intended to be installed in areas accessible to elderly people and children.NOTE Negative pressure relative to the pressure in the flue system can for example be caused by mechanical or thermal ventilation in airtight buildings.

1.1 Scope of EN 12309 Appliances covered by this standard include one or a combination of the following:- gas-fired sorption chiller;- gas-fired sorption chiller/heater;- gas-fired sorption heat pump.This European Standard applies to appliances designed to be used for space heating or cooling or refrigeration with or without heat recovery.This European Standard applies to appliances having flue gas systems of type B and type C (according to CEN/TR 1749) and to appliances designed for outdoor installations. EN 12309 does not apply to air conditioners, it only applies to appliances having:- integral burners under the control of fully automatic burner control systems,- closed system refrigerant circuits in which the refrigerant does not come into direct contact with the water or air to be cooled or heated,- mechanical means to assist transportation of the combustion air and/or the flue gas.The above appliances can have one or more primary or secondary functions (i.e. heat recovery - see definitions in EN 12309 1:2014).In the case of packaged units (consisting of several parts), this European Standard applies only to those designed and supplied as a complete package.The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by EN 12309.Installations used for heating and/or cooling of industrial processes are not within the scope of EN 12309.All the symbols given in this text should be used regardless of the language used.1.2 Scope of this Part 6 to EN 12309This part of EN 12309 specifies the calculation methods of seasonal performances for gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70 kW. It deals in particular with the calculation methods of reference seasonal performances in cooling and heating mode for monovalent and bivalent appliances.NOTE This European Standard serves as an input for the calculation of the system energy efficiency in heating mode of specific heat pump systems in buildings, as stipulated in EN 15316-4-2.

This European Standard specifies the performance classification and test methods for materials used in chemical protective clothing, including gloves and footwear. The gloves and boots should have the same chemical protective barrier requirements as the fabric when an integral part of the clothing. This is a reference standard to which chemical protective clothing performance standards may refer in whole or in part, but this standard is not exhaustive in the sense that product standards may well require testing according to test method standards which are not included in this standard.While these performance levels are intended to relate to the usage to which the chemical protective clothing is to be put, it is essential that the chemical protective clothing manufacturer or supplier indicate the intended use of the protective clothing and that the user (specifier) carries out a risk assessment in order to establish the correct performance level for the intended task.

This document specifies a test method using the high-frequency reciprocating rig (HFRR), for assessing the lubricating property of diesel fuels, including those fuels which could contain a lubricity-enhancing additive. It defines two methods for measurement of the wear scar; Method "A" — Digital camera, and Method "B" — Visual observation.This test method applies to fuels used in diesel engines.NOTE It is not known if this test method will predict the performance of all additive/fuel combinations, including paraffinic fuels for which no additional correlation testing has been performed. Nevertheless, no data has been presented to suggest that such fuels are not within scope.

This document provides the design for an LNG (un)loading connector between LNG road tanker and LNG fuelling stations. This document can be also used for LNG rail tenders. This document includes requirements for (at least):- functional description of the LNG Unloading Receptacle and LNG Unloading Nozzle;- technical layout description of the LNG Unloading Receptacle.The technical layout description of the LNG Unloading Nozzle is not part of this document.The basic functional requirement of the LNG unloading connector are as follows:- to prevent leakage of methane during operation and in particular during disconnecting;- easy handling, no spillage and purging with nitrogen during disconnecting.The loading connector between the LNG road tanker and the LNG terminal is not covered by this document.See Figure 1.[Figure not represented] Figure 1 - Scope of the document

This document specifies the minimum requirements for the unloading stop system of the unloading of LNG from an LNG road tanker to the LNG fuelling station. This document consists of two main topics:- functional description of the unloading stop system;- technical layout description of the unloading stop system.