EN 12490:2010

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Dauerhaftigkeit von Holz und Holzwerkstoffen - Mit Holzschutzmitteln behandeltes Vollholz - Bestimmung der Eindringtiefe und der Aufnahme von Kreosot (Teerimprägnieröl) in behandeltem HolzDurabilité du bois et des matériaux dérivés du bois - Bois massif traité avec un produit de préservation - Détermination des pénétrations et des rétentions des créosotes dans le bois traitéDurability of wood and wood-based products - Preservative-treated solid wood - Determination of the penetration and retention of creosote in treated wood79.040Les, hlodovina in žagan lesWood, sawlogs and sawn timber71.100.50Wood-protecting chemicalsICS:Ta slovenski standard je istoveten z:EN 12490:2010SIST EN 12490:2010en,fr,de01-oktober-2010SIST EN 12490:2010SLOVENSKI
STANDARDSIST EN 12490:20041DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12490
June 2010 ICS 71.100.50; 79.040 Supersedes EN 12490:1998English Version
Durability of wood and wood-based products - Preservative-treated solid wood - Determination of the penetration and retention of creosote in treated wood
Durabilité du bois et des matériaux dérivés du bois - Bois massif traité avec un produit de préservation - Détermination de la pénétration et de la rétention de créosote dans le bois traité
Dauerhaftigkeit von Holz und Holzprodukten - Mit Holzschutzmitteln behandeltes Vollholz - Bestimmung der Eindringtiefe und der Aufnahme von Kreosot (Teerimprägnieröl) in behandeltem Holz This European Standard was approved by CEN on 19 May 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.
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Sapwood/heartwood boundary determination . 12A.1 Scope . 12A.2 Pines . 12A.2.1 Reagents . 12A.2.2 Procedure . 12A.3 Douglas fir . 13A.3.1 Reagents . 13A.3.2 Procedure . 13Annex B (normative)
Density of some selected timber species that are commonly treated with creosote . 14Bibliography . 15 SIST EN 12490:2010

Preservative-treated solid wood
Part 1: Classification of preservative penetration and retention EN 351-2, Durability of wood and wood-based products
Preservative-treated solid wood
Part 2: Guidance on sampling for the analysis of preservative-treated wood EN ISO 3696:1995, Water for analytical laboratory use
Specification and test methods (ISO 3696:1987) ISO 3131, Wood
Determination of density for physical and mechanical tests 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 analytical zone part of the treated wood which is analysed for assessing compliance with the retention requirement
[Adapted from EN 1001-2:2005, 4.03] NOTE For definition of "retention requirement", see 3.6. 3.2 batch clearly identifiable collection of units of preservative-treated wood manufactured to conform to the same defined penetration and retention requirements
[EN 1001-2:2005, 4.04] 3.3 charge all the wood treated together in a single operation
[EN 1001-2:2005, 4.13] SIST EN 12490:2010

[EN 1001-2:2005, 4.15] 3.5 penetration requirement minimum depth to which the creosote is required to penetrate the wood [Adapted from EN 1001-2.2005, 4.59] 3.6 retention requirement loading of the creosote that is required in the analytical zone [Adapted from EN 1001-2:2005, 4.73] NOTE 1 For definition of "analytical zone" see 3.1. NOTE 2 The retention requirement is expressed in kilograms of creosote per cubic metre of treated wood. 3.7 sampling unit unit (for example a pole, a sleeper, a board or a fence post) of preservative treated wood taken from a batch or charge of preservative treated wood [Adapted from EN 1001-2:2005, 4.75] NOTE For definition of "batch" see 3.2. For definition of "charge" see 3.3. 3.8 test sample portion of preservative treated wood taken from a sampling unit, in accordance with the recommendations of EN 351-2 3.9 transition wood wood in a zone between the true sapwood and the true heartwood [Adapted from EN 1001-2:2005, 1.45] NOTE This is distinguishable only in a very few wood species. In general its treatability is similar to that of heartwood. 4 Sampling of creosote-treated wood for the determination of penetration and retention 4.1 General requirements The acquisition of sampling units and test samples shall follow the procedures established in EN 351-1 and EN 351-2. Additionally, when sampling from a freshly treated batch, the wood shall be allowed to cool to ambient temperature before taking test samples. SIST EN 12490:2010

composite sample. NOTE 3 The larger the number of test samples included in the composite
sample, the more accurate the resultant retention determination should be. As soon as possible after the test samples have been obtained, and the penetration measured the wood not included in the specified analytical zone of the test samples shall be removed. The remaining wood constitutes the composite sample for the determination of retention. NOTE 4 If the penetration and retention are determined from the same test samples, the penetration should be determined before any wood is removed from the test samples. The composite sample shall be stored in a stoppered glass bottle to prevent any free creosote being lost before the analysis. 5 Determination of the penetration of creosote in treated wood For each of the test samples, measure and record the penetration of creosote in the treated wood, as the distance, in millimetres (mm), of the furthest point from the surface to which creosote can be seen to be present in the wood, in accordance with the general recommendations in EN 351-2. NOTE 1 Penetration should be assessed visually from a freshly cut test sample, the colour of the creosote clearly indicating its extent in the treated timber. NOTE 2 In some cases the creosote may not penetrate continuously through the early and late wood of the treated timber. NOTE 3 If the boundary between the sapwood and the heartwood cannot be distinguished visually, in some cases a chemical method can be used to distinguish between them. Some examples are given in Annex A. Where no distinction is possible, all the wood is regarded as sapwood. NOTE 4 Occasionally small zones of sapwood adjacent to the heartwood cannot be treated, for example transition wood. These should be ignored for the purposes of assessing sapwood penetration. NOTE 5 Creosote treated zones can be subsurfaced by migrating creosote during sampling. To fully visualize creosote treated zones within taken voluminous drilling cores from sampling units, a final cut through the centre of the core, direction from the un
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