DIN EN 351-1-2007 Durability of wood and wood-based products - Preservative-treated solid wood - Part 1 Classification of preservative penetration and retention German version EN 3.pdf

1、October 2007DEUTSCHE NORM English price group 10No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 71.100.50; 79.040!$II

2、71.100.50 Supersedes EN 351-1:1995 English Version Durability of wood and wood-based products - Preservative-treated solid wood - Part 1: Classification of preservative penetration and retention Durabilit du bois et des produits base de bois - Bois massif trait avec produit de prservation - Partie 1

3、: Classification des pntrations et rtentions des produits de prservation Dauerhaftigkeit von Holz und Holzprodukten - Mit Holzschutzmitteln behandeltes Vollholz - Teil 1: Klassifizierung der Schutzmitteleindringung und -aufnahmeThis European Standard was approved by CEN on 21 June 2007. CEN members

4、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 t

5、o the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the s

6、ame status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

7、Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means res

8、erved worldwide for CEN national Members. Ref. No. EN 351-1:2007: EEN 351-1:2007 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Raw materials.8 5 Preservative-treated solid wood 9 6 Treatment specifications 12 7 Factory production contro

9、l.13 8 Marking .13 Annex A (informative) Decision process for defining preservative treatment requirements15 Annex B (informative) Marking system.17 Annex C (informative) Penetration classes according to EN 351-1:1995 18 Bibliography 21 EN 351-1:2007 (E) 3 Foreword This document (EN 351-1:2007) has

10、been prepared by Technical Committee CEN/TC 38 “Durability of wood and wood-based products”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2008

11、, and conflicting national standards shall be withdrawn at the latest by January 2008. This document supersedes EN 351-1:1995. Significant technical differences between this edition and EN 351-1:1995 are as follows: a) introduction of new penetration classes, see Table 1; b) modification of Figure A

12、.1 to delete the suggested preservative treatments where no other guidance is available. This document consists of two parts. Part 1 is concerned with defining the penetration requirements and gives guidance on the retention requirements for preservatives in preservative-treated solid wood and Part

13、2 gives guidance on the general procedures to be followed in the sampling for analysis of preservative-treated solid wood. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgiu

14、m, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 351-1:2007 (E) 4 Intr

15、oduction This part of EN 351 allows a specifier or user to choose a preservative treatment for a solid wood product taking into a account its intended service or the needs of different regional or traditional practices throughout Europe and the use class conditions to which the solid wood products w

16、ill be exposed (see EN 335-1). In addition, it provides the basis on which treatments for timber in European product standards are to be defined. No attempt has been made to quantify the working life that could be expected from a particular preservative treatment as this will depend on the geographi

17、cal location and the associated climate of the service environment. The performance of treated wood cannot be assessed directly, for example by field tests or bioassay, as no agreed documents specifically for this purpose exist. As a consequence, the penetration and retention of a preservative in tr

18、eated wood are used to define quality of treatment. The penetration and retention values are measured by analysing the active ingredient(s) in the treated wood. Preservative treatment for certain wood species used in the different use classes might be unnecessary owing to their natural durability (s

19、ee EN 350-2 and EN 460). If appropriate treatment is necessary, the specification for appropriate preservatives is defined in EN 599-1. EN 351-1:2007 (E) 5 1 Scope This part of EN 351 establishes classification for preservative-treated wood in terms of preservative penetration and gives guidance on

20、a classification of retention. These should be used as a basis for specifying preservative treatments for particular products. This part of EN 351 provides terminology to be used by the specifier when preparing a preservative treatment specification or product standard. It is not a treatment specifi

21、cation in itself. This part of EN 351 is applicable to the production of preservative-treated solid wood, including glued laminated timber, suitable for use in those service conditions defined by the use classes in EN 335-1. It does not apply to any subsequent examination of treated wood in service.

22、 This part of EN 351 is applicable to the protection of wood against attack by wood-destroying and wood-disfiguring fungi, insects and marine organisms. This part of EN 351 does not consider other properties of treated wood, for example odour, corrosiveness and compatibility with other materials, no

23、r does it consider any properties from the health, safety and environmental point of view. This part of EN 351 does not apply to wood treated with formulations that are applied to timber in service to eliminate or control an existing fungal or insect infestation, or to prevent attack by sapstain fun

24、gi, or insects in green timber. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) app

25、lies. EN 350-2, Durability of wood and wood-based products Natural durability of solid wood Part 2: Guide to natural durability and treatability of selected wood species of importance in Europe EN 351-2, Durability of wood and wood-based products Preservative-treated solid wood Part 2: Guidance on s

26、ampling for the analysis of preservative-treated wood EN 599-1, Durability of wood and wood-based products Performance of preventive wood preservatives as determined by biological tests Part 1: Specification according to hazard class. EN 1001-2:2005, Durability of wood and wood-based products Termin

27、ology Part 2: Vocabulary ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection EN 351-1:2007 (E) 6 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1001

28、-2:2005 and the following apply. 3.1 active ingredient(s) individual chemical compound or compounds included in a wood preservative product to give it specific activity against biological agents of deterioration NOTE Adapted from EN 1001-2:2005, 4.01. 3.2 analytical zone that part of the treated woo

29、d which is analysed for assessing compliance with the retention requirement (see 3.16) NOTE The analytical zone is taken from the lateral surfaces of the treated wood. The depth to which sampling is required will depend upon the species of wood being analysed and the treatment level concerned. EN 10

30、01-2:2005, 4.03 3.3 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 3.4 biological reference value amount in grams per square metre or kilograms per cubic metre of a wo

31、od preservative (as product) found to be effective in the test in preventing attack by the particular biological agent being tested EN 1001-2:2005, 4.06 3.5 charge all the wood treated together in a single operation EN 1001-2:2005, 4.13 3.6 composite sample collection of all test samples derived fro

32、m the sampling units taken from the batch in accordance with the chosen sampling plan for the determination of retention EN 1001-2:2005, 4.15 3.7 critical value value equivalent to the highest biological reference value (in grams per square metre or kilograms per cubic metre) obtained from all the b

33、iological tests carried out in accordance with EN 599-1 for any given use class NOTE The critical value will vary according to use class, method of application, and organisms against which the preservative is to provide protection and whether it is to be applied to softwood or hardwood. EN 1001-2:20

34、05, 4.18 EN 351-1:2007 (E) 7 3.8 exposed heartwood heartwood of a timber component that is not enclosed by sapwood EN 1001-2:2005, 1.14 3.9 glued laminated timber (glulam) structural member formed by the lateral surfaces of timber laminations with the grain running essentially parallel 3.10 incising

35、 procedure of puncturing the lateral surfaces of wood as an aid in securing deeper and more uniform penetration of wood preservative EN 1001-2:2005, 4.38 3.11 lamination layer of wood in glued laminated timber (see 3.9) formed from one or several boards, usually end jointed, but sometimes side joint

36、ed or both so as to extend to the full width and length of the member 3.12 penetration requirement minimum depth to which the active ingredient(s) (3.1) of the wood preservative is (are) required to penetrate the wood EN 1001-2:2005, 4.59 3.13 penetrating treatment process process which includes fea

37、tures or procedures intended to overcome the natural resistance of wood to penetration by a wood preservative product in its ready for use form NOTE Such processes include, for example, currently practised technologies of diffusion treatment, the double vacuum process and the vacuum/pressure process

38、. EN 1001-2:2005, 4.58 3.14 permeable species wood species having timber comprising of sapwood or both sapwood and heartwood of treatability class 1 as defined in EN 350-2 NOTE Adapted from EN 1001-2:2005, 4.61. 3.15 resistant species all wood species having timber not of treatability class 1 as def

39、ined in EN 350-2 NOTE Adapted from EN 1001-2:2005, 4.72. EN 351-1:2007 (E) 8 3.16 retention requirement loading of the wood preservative product that is required in the analytical zone NOTE The retention requirement is expressed in grams of product per square metre for superficial application proces

40、ses (see 3.19) and kilograms of product per cubic metre for penetrating treatment processes (see 3.13). It is derived from the critical value in different ways depending upon the particular test involved EN 1001-2:2005, 4.73. 3.17 sampling unit one unit (for example a pole, a board, a fence post) of

41、 preservative-treated wood taken from a batch (see 3.3) of preservative-treated wood EN 1001-2:2005, 4.75 3.18 solid wood wood which has been sawn or otherwise machined NOTE It may include finger jointed and/or laminated wood. EN 1001-2:2005, 1.39 3.19 superficial application process process which d

42、oes not include particular features or procedures intended to overcome the natural resistance of wood to penetration of a wood preservative product in its ready to use form NOTE Such processes include for example brush and spray techniques and short-time immersion (dipping) processes in which the wo

43、od normally has only a few minutes contact with the wood preservative. EN 1001-2:2005, 4.82 3.20 transition wood wood in a zone between the true sapwood and the true heartwood NOTE This is only distinguishable in very few wood species. In general its durability is intermediate between that of sapwoo

44、d and heartwood, whereas its treatability is similar to that of heartwood. EN 1001-2:2005, 1.45 4 Raw materials 4.1 Wood to be treated The quality of the wood to be treated shall comply with relevant product specification or the standard to which this document is to be applied. NOTE 1 The wood shoul

45、d be free from features which would prevent proper application of the preservative or impair the serviceability of the preservative-treated wood. NOTE 2 The moisture content of the wood should be at a level appropriate to the wood preservative and method of treatment used. All machining of the wood

46、should be carried out before treatment. EN 351-1:2007 (E) 9 4.2 Wood preservatives The wood preservatives used shall comply with the requirements of EN 599-1 concerning their efficacy against wood-destroying organisms. 5 Preservative-treated solid wood 5.1 General Preservative-treated solid wood sha

47、ll be defined in terms of a penetration and retention requirement. 5.2 Penetration 5.2.1 Penetration requirements The penetration requirement relates to the lateral penetration of the sapwood but includes the heartwood where the sapwood and heartwood cannot be distinguished by eye and in certain spe

48、cified instances where the heartwood has been exposed by sawing. Lateral penetration requirements can also be supplemented by a requirement for longitudinal penetration, which shall be at least ten times greater than the corresponding lateral penetration requirement. For penetration classes requirin

49、g full sapwood penetration it is occasionally found that small zones of sapwood, for example transition wood, cannot be treated; these shall be ignored for the purpose of assessing sapwood penetration. In glued members untreated zones not exceeding 10 % of the total cross section of the sapwood expected to be treated in each lamination, shall also be ignored in the assessment of penetration. Penetration shall be determined by detecting the presence of preservative at, or beyond, the limit of the required penetration. NOTE 1 This