BS DD CEN TS 15119-2-2008 Durability of wood and wood-based products - Determination of emissions from preservative treated wood to the environment - Wooden commodities exposed in .pdf

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1、DD CEN/TS 15119-2:2008ICS 13.020.30; 71.100.50NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWDRAFT FOR DEVELOPMENTDurability of wood and wood-based products Determination of emissions from preservative treated wood to the environmentPart 2: Wooden commodities exposed in Use Cl

2、ass 4 or 5 (in contact with the ground, fresh water or sea water) Laboratory methodLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/06/2010 01:32, Uncontrolled Copy, (c) BSIThis Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 28 Febr

3、aury 2010. BSI 2010ISBN 978 0 580 58924 9Amendments/corrigenda issued since publicationDate CommentsDD CEN/TS 15119-2:2008National forewordThis Draft for Development is the UK implementation of CEN/TS 15119-2:2008. Together with DD CEN/TS 15119-1:2008 itsupersedes PD CEN/TR 15119:2005 which is withd

4、rawn.This publication is not to be regarded as a British Standard.It is being issued in the Draft for Development series of publications and is of a provisional nature. It should be applied on this provisional basis, so that information and experience of its practical application can be obtained.Com

5、ments arising from the use of this Draft for Development are requested so that UK experience can be reported to the international organization responsible for its conversion to an international standard. A review of this publication will be initiated not later than 3 years after its publication by t

6、he international organization so that a decision can be taken on its status. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards.According to the replies received by the end of the review period, the responsible BSI Committee wi

7、ll decide whether to support the conversion into an international Standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent to the Secretary of the responsible BSI Technical Committee at British Standards House, 389 Chiswick High Road, London W4 4AL.The U

8、K participation in its preparation was entrusted to Technical Committee B/515, Wood preservation.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are respon

9、sible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/06/2010 01:32, Uncontrolled Copy, (c) BSIDD CEN/TS 15119-2:2008TECHNICAL SPECIFICATIONSPCIFICATION TECHNIQUETECHNISCHE SPEZIFIK

10、ATIONCEN/TS 15119-2May 2008ICS 13.020.30; 71.100.50English VersionDurability of wood and wood-based products - Determination ofemissions from preservative treated wood to the environment -Part 2: Wooden commodities exposed in Use Class 4 or 5 (incontact with the ground , fresh water or sea water) -

11、LaboratorymethodDurabilit du bois et des matriaux base de bois -Estimation des missions dans lenvironnement du boistrait avec des produits de prservation - Partie 2 : Articlesen bois exposs en classe demploi 4 ou 5 (en contact avecle sol, leau douce ou leau de mer) - Mthode delaboratoireDauerhaftigk

12、eit von Holz und Holzprodukten - Abschtzungvon Emissionen von mit Holzschutzmitteln behandeltemHolz an die Umwelt - Teil 2: Holzprodukte inGebrauchsklasse 4 und 5 (im Kontakt mit Erde, Swasseroder Meerwasser) - LaborverfahrenThis Technical Specification (CEN/TS) was approved by CEN on 20 November 20

13、07 for provisional application.The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit theircomments, particularly on the question whether the CEN/TS can be converted into a European Standard.CEN members are required t

14、o announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS availablepromptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)until the final decision about the possible conversion

15、of the CEN/TS into an EN is reached.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,Ro

16、mania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedw

17、orldwide for CEN national Members.Ref. No. CEN/TS 15119-2:2008: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/06/2010 01:32, Uncontrolled Copy, (c) BSIDD CEN/TS 15119-2:2008CEN/TS 15119-2:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Description of the test method.5 3 T

18、est report 10 Annex A (informative) Recording forms .11 Bibliography 13 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/06/2010 01:32, Uncontrolled Copy, (c) BSIDD CEN/TS 15119-2:2008CEN/TS 15119-2:2008 (E) 3 Foreword This document (CEN/TS 15119-2: 2008) has been prepared by Technical Comm

19、ittee CEN/TC 38 “Durability of wood and wood-based products”, the secretariat of which is held by AFNOR. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all s

20、uch patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, I

21、celand, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. This document is derived from a Technical Report (CEN/TR 15119), submitted to OECD as a draft Test Guideline, following

22、 a request from OECD for the development of an OECD wide environmental exposure scenario document for wood preservatives in the framework of the EU Biocides Directive 98/8/EC. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/06/2010 01:32, Uncontrolled Copy, (c) BSIDD CEN/TS 15119-2:2008CEN

23、/TS 15119-2:2008 (E) 4 Introduction The emissions from preservative treated wood to the environment need to be quantified to enable an environmental risk assessment of the treated wood. This document describes a laboratory method for the estimation of emissions from preservative treated wood in the

24、case where the preservative treated wood is not covered and is in contact with the ground, fresh water or seawater. There are three situations in this case where emissions could enter the environment: a) emissions from preservative treated wood in contact with the ground. Use Class 4A. Emissions fro

25、m the surface of the treated wood could enter the soil via the soil water; b) emissions from treated wood in contact with fresh water. Use Class 4B. Emissions from the surface of the treated wood could enter the water; c) emissions from treated wood in contact with sea water. Use Class 5. Emissions

26、from the surface of the treated wood could enter the sea. The method is a laboratory procedure for obtaining water samples (emissate) from treated wood in contact with water, at increasing time intervals. The quantities of emissions in the emissate are related to the surface area of the wood and the

27、 length of exposure, to estimate a flux in milligrams per square metre per day. The flux after increasing periods of exposure (e.g. 1 year, 10 years) can be estimated. NOTE The emissate can also be tested for eco-toxicological effects. The quantity of emissions can be used in an environmental risk a

28、ssessment of the treated wood. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/06/2010 01:32, Uncontrolled Copy, (c) BSIDD CEN/TS 15119-2:2008CEN/TS 15119-2:2008 (E) 5 1 Scope This Technical Specification specifies a laboratory method for obtaining water samples from treated wood which has

29、 been in conditions designated to simulate continuous contact with the ground or with water (Use Class 4 or 5), at time intervals after exposure. 2 Description of the test method 2.1 General considerations The principal agent for causing emissions from wood exposed to soil is the soil water. The mec

30、hanism of leaching at the wood surface by the soil water is assumed to be identical in nature and severity to leaching from a wood surface in continuous contact with water. The mechanism of leaching at the wood surface by fresh water is assumed to be identical in nature and severity to leaching from

31、 a wood surface by seawater. The wood, in the case of wood treated with a wood preservative, shall be representative of commercially used wood. It shall be treated in accordance with the preservative manufacturers instructions and in compliance with appropriate standards and specifications. The para

32、meters for the post-treatment conditioning of the wood prior to the commencement of the test shall be stated. The wood samples used shall be representative of the commodities used. The composition, amount and pH value of the water used in the test are important in determining the quantity, content a

33、nd nature of emissions from wood. Water samples will be taken at a minimum interval of one day and a maximum interval of 7 days, on a sampling scheme covering at least 19 days. 2.2 Principle Water samples are collected after continuous contact with treated wood at increasing time intervals. To simul

34、ate the emission of wood preservatives from wood that is exposed to continuous contact with water test specimens are immersed in water and samples of the water are collected at different intervals. The volume of water relative to the surface area exposed to the water is equivalent to the ratio found

35、 in wood exposed in service in some Use Class 4 situations (1 m3 per 40 m2or 25 l per m2). The water (emissate) is collected and is chemically analysed at seven or more sample times over the 19 days; it is suitable for ecotoxicity testing. Emission rates in milligrams per square metre per day are ca

36、lculated from analytical results. The sampling periods are recorded. Tests with untreated samples can be discontinued if there is no background detected in the first three data points 2.3 Product and reagent 2.3.1 Water Water complying with grade 3 of EN ISO 3696 or water especially designed for env

37、ironmental investigations is ideal. Deionised water can also be used. The pH value shall normally be in the range 5 to 7. The pH value shall not be adjusted unless special conditions might justify setting the pH to a specified value between 5 and 7. Water temperature shall be (20 2) C. The pH value

38、and water temperature shall be stated in the test report. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/06/2010 01:32, Uncontrolled Copy, (c) BSIDD CEN/TS 15119-2:2008CEN/TS 15119-2:2008 (E) 6 2.3.2 Preservative The identity of the preservative product used to treat the wood samples shal

39、l be stated in the test report. It shall state the name and other designation of the preservative, and the trade or common name of the active ingredient(s), substances of concern (as defined in the EU Directive 98/8/EC) or a generic description of co-formulants and the composition expressed in terms

40、 of the mass fraction of each of the ingredients. 2.4 Apparatus 2.4.1 Immersion container The container shall be made of a material that is inert to water and the treated timber and large enough to allow the test specimens to have all their faces exposed to water and to contain sufficient water for

41、the ratio of the exposed surface area of the test specimen to the volume of water to which it is exposed, to be 40 (i.e. 40 m2 m-3or 0,4 cm2 cm-3). The volume of water required is therefore 25 l per m2of exposed surface area of the test specimen (this is equivalent to 2,5 cm3per cm2). NOTE For examp

42、le, for five wood test specimens 25 mm wide by 50 mm long, 15 mm thick, end sealed, where the surface area exposed to water is 200 cm2the volume of water required is 500 ml. 2.4.2 Assembly for test specimens No equipment used to hold the test specimens below the level of the water shall be made of a

43、 material that will react with the water or the treated timber. The test samples should be restrained in a test frame which allows all 5 test specimens to be manoeuvred simultaneously and which allows free access of water to all surfaces. 2.5 Test specimens 2.5.1 Species of wood The wood species sha

44、ll be typical of the wood species used for the efficacy testing of wood preservatives e.g. Pinus sylvestris (Linnaeus) (Scots pine). NOTE Additional tests may be made using other species but, if so, this should be stated in the test report. 2.5.2 Quality of wood and wood moisture content Use straigh

45、t grained wood without knots. Material of a resinous appearance shall be avoided. NOTE The wood should be typical of wood that is available commercially. The source, density and number of annual growth rings per 10 mm shall be stated in the test report. 2.5.3 Size of test specimens Wood test specime

46、ns have minimum dimensions of 25 mm wide by 50 mm in length, 15 mm thick, with the longitudinal faces parallel to the grain of the wood. Test specimens shall consist of 100 % sapwood. Each test specimen is marked so that it can be identified throughout the test. The wood test specimens shall be plai

47、n sawn and the surfaces shall not be sanded. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 18/06/2010 01:32, Uncontrolled Copy, (c) BSIDD CEN/TS 15119-2:2008CEN/TS 15119-2:2008 (E) 7 2.5.4 Number of test specimens Two sets of treated test specimens in two immersion containers (2.4.1) are us

48、ed and the mean value taken as the emission value. One set of untreated test specimens in one immersion container is also used. The number of wood test specimens depends on the specimens size. The total surface of wood test specimens to be immersed in one immersion container is at least 200 cm2, and

49、 the minimum number of test specimens per immersion container is three. For one test there is at least nine (three sets of three) test specimens: six test specimens are treated with preservative, three test specimens are untreated. Sufficient test specimens are prepared to allow a selection of six which are within 5% of the mean value of the retentions of the group of test specimens, and one for the estimation of the oven dry moisture content of the test specimens before treatment. NOTE For the minimum size of specimens given in 2.5.3., the number of speci