Le présent document comprend les parties suivantes:

a) une compilation des méthodes d'essai utilisant la méthode du point de croisement;

b) des recommandations sur l'applicabilité et l'utilisation des essais utilisant la méthode du point de croisement pour les granulés de biocombustibles solides;

c) des informations relatives à l'application des données d'essais utilisant la méthode du point de croisement pour le calcul des conditions critiques dans les lieux de stockages.

Les données relatives à la production spontanée de chaleur déterminées à l'aide du présent document sont uniquement associées à la qualité et à l'âge spécifiques de l'échantillon de matériau.

Les informations déduites à l'aide du présent document sont destinées à être utilisées dans le contrôle qualité et dans l'identification des dangers et l'évaluation des risques associés aux procédures fournies dans l'ISO 20024.

Les méthodes décrites peuvent être utilisées pour d'autres substances que les granulés de biocombustibles solides (par exemple: les plaquettes de bois).

The emission and depletion factor and emission and depletion rate for various gas species emitted from sample within a closed test container is determined by means of gas chromatography.

The emission and depletion factor and emission and depletion rate provide guidance for ventilation requirements to keep gas concentrations below Permissible Exposure Levels (PEL) in spaces where workers can be exposed to the enclosed atmosphere.

— 1.1 forest, plantation and other virgin wood;

— 1.2 by-products and residues from wood processing industry;

— 1.3.1 chemically untreated used wood;

— 1.4 blends and mixtures.

This document covers hog fuel, which is produced with blunt tools, and wood chips, which are produced with sharp tools.

NOTE 1 1.2.2 By-products and residues from wood processing industry, which can include chemically treated material (e.g. glued, painted, laminated) are not allowed include halogenated organic compounds or heavy metals at levels higher than those in typical virgin material values (see Annex B in ISO 17225-1) or higher than typical values of the country of origin.

NOTE 2 If class I4 includes chemically treated used wood (1.3.2), it can be only used in the installations permitted to use 1.3.2.

– 1.1 Forest, plantation and other virgin wood;

– 1.2 By-products and residues from wood processing industry;

– 1.3.1 Chemically untreated used wood;

– 2. Herbaceous biomass;

– 3. Fruit biomass;

– 4. Aquatic biomass.

Subcategories of the above stated raw materials are included.

ISO/TS 17225-8:2016 does not consider products, which are marketed as charcoal or as charcoal products. For these products, ISO 17225-1:2014, Table 14 shall apply.

NOTE 1 For thermally treated powder, ISO 17225-1:2014, Table 15 or Table 16 may be used for specification.

NOTE 2 Health, safety and environmental issues for solid biofuels are important and need special attention; however, they are outside the scope of this document.

ISO/TS 16996:2015 is applicable for the following elements: Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Br, Mo, Cd, Sb, and Pb. Concentrations from approximately 0,000 1 % and above can be determined depending on the element, the calibration materials used and the instrument used.

The document consists of three parts, as follows:

— Part I: Method for direct determination of bridging behaviour, to make it available for research and development purposes (see Clause 4).

— Part II: Implementing the measurement principle, to assist in the construction of test apparatus and to illustrate the performance of a bridging test (see Clause 5).

— Part III: Experience and results from bridging tests, to provide typical results on bridging for a wide range of biofuels already tested (see Clause 6).

The following topics are excluded from this document:

—    boilers, burners, furnaces and lighting in case these are not specifically applied for locally produced biogas;

—    gas fuelled engines for vehicles and ships;

—    the public gas grid;

—    specifications to determine biomethane quality;

—    transportation of compressed or liquefied biogas;

—    transportation of biomass or digestate;

—    assessment and determination whether biomass is sourced sustainably or not.

An informative explanation of the scope is included in Annex A.

The document applies to HBSs comprising of pipeline and equipment with pressure levels of less than 5 kPa.

Any equipment or appliances connected to an HBS or utilizing the biogas energy of an HBS are not a part of the scope of this document.

Les installations de production de biogaz sont, entre autres, utilisées dans des installations industrielles, par exemple dans l'industrie des produits alimentaires et des boissons, les stations de traitement des eaux usées, les installations de traitement des déchets, les décharges, les installations agricoles de petite taille et les installations domestiques.