1、Durability of wood and wood-based products Determination of emissions from preservative treated wood to the environment Wooden commodities exposed in Use Class 3 (Not covered, not in contact with the ground) Semi-field method PD CEN/TS 16663:2016 BSI Standards Publication WB11885_BSI_StandardCovs_20
2、13_AW.indd 1 15/05/2013 15:06National foreword This Published Document is the UK implementation of CEN/TS 16663:2016. It supersedes PD CEN/TR 16663:2014 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee B/515, Wood preservation. A list of organizations
3、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 responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN
4、978 0 580 93210 6 ICS 13.020.30; 71.100.50 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 December 2016. Amendments/corrigenda issued since publication Da
5、te Text affected PUBLISHED DOCUMENT PD CEN/TS 16663:2016 TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 16663 November 2016 ICS 13.020.30; 71.100.50 Supersedes CEN/TR 16663:2014 English Version Durability of wood and wood-based products - Determination of emissions fr
6、om preservative treated wood to the environment - Wooden commodities exposed in Use Class 3 (Not covered, not in contact with the ground) - Semi-field method Durabilit du bois et des matriaux drivs du bois - Dtermination des missions dans lenvironnement du bois trait avec des produits de prservation
7、 - Produits de base en bois exposs la classe demploi n 3 (dans un endroit abrit, ntant pas en contact avec le sol) - Mthode semi-terrain Dauerhaftigkeit von Holz und Holzprodukten - Abschtzung von Emissionen von mit Holzschutzmitteln behandeltem Holz an die Umwelt - Holzprodukte in Gebrauchsklasse 3
8、 (nicht abgedeckt, ohne Erdkontakt) - Semi-Feldverfahren This Technical Specification (CEN/TS) was approved by CEN on 22 August 2016 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
9、their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissi
10、ble to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
11、Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDI
12、ZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 16663:2016 E PD CEN/TS 16663:2016CEN/TS
13、16663:2016 (E) 2 Contents Page European foreword . 3 Introduction 4 1 Scope 5 2 Normative references 5 3 Description of the test method . 5 3.1 Principle . 5 3.2 Quality criteria . 5 3.3 Wood preservative . 5 3.4 Apparatus . 6 3.5 Test specimens . 7 3.5.1 General 7 3.5.2 Species of wood 7 3.5.3 Qual
14、ity of wood and wood moisture content 7 3.5.4 Preparation of test specimens 8 3.5.5 Number of test specimens 8 3.5.6 End seal . 8 3.6 Procedure. 8 3.6.1 Product under test 8 3.6.2 Treatment and handling of test specimens . 8 3.6.3 Untreated controls (optional) 9 3.6.4 Exposure test site 9 3.6.5 Dura
15、tion of the test . 9 3.6.6 Collection of the leachates . 9 3.6.7 Chemical analysis . 10 3.7 Expression of results . 10 4 Test report 10 Annex A (informative) Test set-up and weather rack 12 A.1 Vertical exposure . 12 Figure A.1 - Test set-up for vertical exposure 12 Figure A.2 Vertically oriented te
16、st series . 13 Figure A.3 Attachment of the panels for the test set-up 13 A.2 Horizontal exposure 14 Figure A.4 Sectional view panels exposed horizontally 14 Annex B (informative) Model treatments 15 B.1 For preservative intended for superficial treatment 15 B.2 For preservative intended for penetra
17、tion treatment . 15 Annex C (informative) Orientation of annual growth rings and accepted heartwood 16 Figure C.1 Example on the orientation of annual growth rings 16 Annex D (informative) Stability study . 17 Bibliography . 18 PD CEN/TS 16663:2016CEN/TS 16663:2016 (E) 3 European foreword This docum
18、ent (CEN/TS 16663:2016) has been prepared by Technical Committee 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 shall not be h
19、eld responsible for identifying any or all such patent rights. This document supersedes CEN/TR 16663:2014. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to announce this European Standard: Austria, Belgium, Bulgaria, Croa
20、tia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and t
21、he United Kingdom. PD CEN/TS 16663:2016CEN/TS 16663:2016 (E) 4 Introduction The leaching from preservative treated wood into the environment needs to be quantified to enable an environmental risk assessment to be made of the treated wood, e.g. according to the Biocidal Products Regulation, 528/2012.
22、 This document describes a semi-field method for the determination of leachate from preservative treated wood where the preservative treated wood is not covered and not in contact with the ground or water (use class 3 according to EN 335). The method is a semi-field procedure for obtaining water sam
23、ples (leachate) from treated wood exposed out of ground contact, during natural exposure. The quantities of emissions in the leachate are related to the surface area of the wood and can be used in scenarios for the environmental risk assessment of the treated wood. NOTE The leachate can also be test
24、ed for eco-toxicological effects (example: OECD 202 testing on Daphnia sp.). PD CEN/TS 16663:2016CEN/TS 16663:2016 (E) 5 1 Scope This Technical Specification specifies a method for determining the leaching of active ingredients or other compounds from treated wood by a semi-field method for use clas
25、s 3 (outdoor above ground). The preservative treated wood can be tested with or without subsequently surface coating or other water-repellent treatment. The method is applicable to the testing of commercial or experimental preservatives or paint systems applied to timber by methods appropriate to co
26、mmercial practice. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (
27、including any amendments) applies. EN ISO 5667-3, Water quality - Sampling - Part 3: Preservation and handling of water samples (ISO 5667- 3) 3 Description of the test method 3.1 Principle Panels are treated, assembled and placed outdoors, out of ground contact and exposed to the normal environmenta
28、l and ecological factors which affect preservative treated wood so exposed in practice. The rainwater is retained and the leachate is monitored by chemical analyses of the active ingredients and/or other compounds. 3.2 Quality criteria The validity of the analytical method for the substances in ques
29、tion should be determined before conducting the test: a) accuracy; b) specificity; c) limit of detection (LOD); d) limit of quantification (LOQ); e) precision. NOTE 1 EN ISO 5667-3 may give guidance on the preservation and handling of water samples. NOTE 2 This may include CAS no or chemical formula
30、tion. 3.3 Wood preservative The test report shall state the name and other designation of the tested product, and the trade or common name of the active ingredient(s) as defined in the regulation n528/2012. Use of a coating is possible (identity and amount of coating used shall be stated in the test
31、 report). PD CEN/TS 16663:2016CEN/TS 16663:2016 (E) 6 3.4 Apparatus 3.4.1 Vessel for receiving water Laboratory brown glass flask or plastic jars with no impurities that can influence the active ingredient. NOTE EN ISO 5667-3 gives the good practices to preserve water samples. The brown glass flask
32、or plastic jars shall be protected from heat and sunlight. The capacity of the vessels depends on the exposure scenario. If the expected annual precipitation is approximately 700 mm and the test set-up is placed horizontal 25 l containers are recommended. If the test set-ups are exposed vertically 5
33、 l containers are recommended. 3.4.2 Gutter, screws, hooks All materials used to fix and support the panels and collect the rainwater shall be made of inert materials. Stainless steel has been found to be suitable (see Annex A). 3.4.3 Weather station A weather station capable of monitoring the quant
34、ity of rainfall, the wind direction and wind speed at the test site shall be used. 3.4.4 Wood working equipment Equipment capable of producing the desired finish of the surface; e.g. fine sawn or planed. 3.4.5 Condition chamber Conditioning chamber, well ventilated, controlled at (20 2) C and (65 5)
35、 % relative humidity. 3.4.6 Mixing vessel 3.4.7 Preservative treatment Equipment suitable for carrying out vacuum, vacuum-pressure, immersion or surface treatment of specimens. 3.4.8 Balance A balance capable of weighing to the nearest 0,1 g. 3.4.9 Kiln A kiln suitable to dry the preservative treate
36、d timber after treatment and post treatment conditioning, if required. The drying procedure shall follow recommendations from the supplier of the product under test. 3.4.10 Safety equipment and protection clothing Appropriate for the test product, to ensure the safety of the operator. 3.4.11 Refrige
37、rator/Freezer A refrigerator or freezer (minimum - 18C) to store the leachate at low temperature to reduce degradation of the substances to be analysed and the growth of mircoorganisms in the leachate. The storage procedure shall follow recommendations from the supplier of the product under test or
38、EN ISO 5667-3. PD CEN/TS 16663:2016CEN/TS 16663:2016 (E) 7 3.4.12 Chemical analysis equipment Analytical equipment appropriate to determine the compounds of interest to be analysed in the leachate at the desired concentration. 3.4.13 Exposure site An open area, free from tall vegetation and not exce
39、ssively influenced by industrial or agricultural pollution and no obstacle to the rain. Distance to building should be specified in the test report. 3.4.14 Exposure weathering racks The exposure racks, to which the panels are attached, should be robust to maintain the panels in the required orientat
40、ion for the duration of the test. Racks that have been found to be suitable are illustrated in Annex A. 3.5 Test specimens 3.5.1 General The test specimens that make up the test panel are representative or typical of commercial timber, and exposed to mimic service exposure (e.g. vertical spruce ship
41、lap cladding. Alternatively the test specimens may be selected to be a realistic worst case estimation of the emission for a wood preservative in Use Class 3. 3.5.2 Species of wood The wood species shall be typical of the wood species used for the efficacy testing of wood preservatives, e.g. sapwood
42、 of Pinus sylvestris (L) (Scots pine). Additional tests may be made using other species; this should be stated in the test report. 3.5.3 Quality of wood and wood moisture content The quality of wood and wood moisture content shall be typical of the wood used commercially or use sound straight-graine
43、d wood. Material of resinous appearance shall be avoided. Use wood with between 2 annual growth rings per 10 mm and 10 annual growth rings per 10 mm in case of Scots pine. The proportion of latewood in the annual rings shall not exceed 30 % of the whole cross-section for Scots pine sapwood. When pen
44、etrating processes are being used for the treatment the specimens shall consist of sapwood only when using Scots pine. For superficial treatments some heartwood is permitted on the back of the specimens. An example is given in Annex C. In a batch of specimens to be treated, the density of an individ
45、ual is permitted to differ from the mean value of the batch by 15 %. The mean density of the treated specimens used for the test shall be recorded in the test report. Knots are permitted to a limited extent. One knot less than 2 cm in diameter and maximum 3 knots of less than 1 cm are permitted in e
46、ach board. If other wood species are used the number of annual rings and density shall be stated in the report. The density of the panels for each test setup is distributed evenly. Knots and other defects are evenly distributed over the 3 replicas. Annex C gives guidance to the preferred orientation
47、 of the growth rings. PD CEN/TS 16663:2016CEN/TS 16663:2016 (E) 8 3.5.4 Preparation of test specimens The timber is conditioned to 12 2 % mass fraction moisture content. Prepare test specimens of (100 2) mm (25 2) mm cross section of sawn timber. The length of the panel is (760 5) mm. Panels of othe
48、r sizes can be prepared and used in this test. Alternatively the test specimens can be planed or prepared in a way typical of commercial practice. The actual dimensions of the test specimens shall be stated in the report. Individual test specimens shall be assigned unique identification number in su
49、ch a way that these numbers are retained trough out all preparation operations. 3.5.5 Number of test specimens Prepare at least 21 panels for each combination of test parameters. Seven panels are used for one test set-up. Three replicas for each combination of test parameters are prepared. 3.5.6 End seal The wood panels are end-sealed after preservative treatment by a material, which prevents water entry as well as microbial infection. The end-sealer shall remain effective during long-term exposure to the weather and may not c
