CEN TS 15082-2005 Wood preservatives - Determination of the preventive effectiveness against sapstain fungi and mould fungi on freshly sawn timber - Field test《木材防腐剂 新锯材对变色菌和霉菌的防腐有.pdf

1、DRAFT FOR DEVELOPMENTDD CEN/TS 15082:2005Wood preservatives Determination of the preventive effectiveness against sapstain fungi and mould fungi on freshly sawn timber Field testICS 71.100.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40

2、g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58DD CEN/TS 15082:2005This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 12 December 2005 BSI 12 December 2005ISBN 0 580 46608 6National forewordThis D

3、raft for Development is the official English language version of CEN/TS 15082:2005.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 because the Technical Committee wants to assess its us

4、efulness. It should be applied on this provisional basis, so that information and experience of its practical application may be obtained.Comments arising from the use of this Draft for Development are requested so that UK experience can be reported to the European organization responsible for its c

5、onversion to a European standard. A review of this publication will be initiated 2 years after its publication by the European organization so that a decision can be taken on its status at the end of its 3-year life. Notification of the start of the review period will be made in an announcement in t

6、he appropriate issue of Update Standards.According to the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into a European standard, to extend the life of the Technical Specification or to withdraw it. Comments should be se

7、nt in writing to the Secretary of BSI Subcommittee B/515/1, Preservative preconditioning and biological testing, at British Standards House, 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text.A lis

8、t of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standa

9、rds Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Summary of pagesThis document compris

10、es a front cover, an inside front cover, the CEN/TS title page, pages 2 to 15 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsTECHNICAL SPECIFICATIONSPCIFICATION TECHNIQUETECHNIS

11、CHE SPEZIFIKATIONCEN/TS 15082July 2005ICS 71.100.50English versionWood preservatives - Determination of the preventiveeffectiveness against sapstain fungi and mould fungi on freshlysawn timber - Field testProduits de prservation du bois - Dtermination delefficacit prventive contre le bleuissement et

12、 lesmoisissures des sciages frais - Essai de champHolzschutzmittel - Bestimmung der vorbeugendenWirksamkeit gegen Schnittholzblue und Schimmelpilzeauf frisch geschnittenem Holz - FeldversuchThis Technical Specification (CEN/TS) was approved by CEN on 1 March 2005 for provisional application.The peri

13、od 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 to announce the existence of this CEN/TS

14、 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 of the CEN/TS into an EN is reached.CEN

15、 members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and

16、United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. CEN/TS 15082:20

17、05: E2 Contents Page Foreword 3 Introduction4 1 Scope .5 2 Terms and definitions.5 3 Principle.5 4 Test material and apparatus.5 5 Sampling of the preservative .6 6 Test specimens .6 7 Procedure 7 8 Validity of the test .9 9 Test report .9 Annex A (informative) Reference formulation copper-8-quinoli

18、nolate.11 Annex B (informative) Example of storage conditions12 Annex C (informative) Example of a test report .13 Bibliography.15 CEN/TS 15082:20053 Foreword This document (CEN/TS 15082:2005) has been prepared by Technical Committee CEN/TC 38 “Durability of wood and wood-based products”, the secret

19、ariat of which is held by AFNOR. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this CEN Technical Specification: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hu

20、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. CEN/TS 15082:20054 Introduction This CEN Technical Specification specifies a field test method which gives a basis for a

21、ssessing the effectiveness of a wood preservative product for the protection of freshly felled timber against colonization by sapstain, mould and other disfiguring micro-organisms. This field test method provides one criterion by which the value of a product can be assessed. If little is known about

22、 the activity of a product against sapstain and mould fungi, it is advisable to carry out a preliminary laboratory assessment using a suitable method. To ensure that colonization of the test specimens will occur, the test should be carried out at sites where sapstain and mould growth occur on untrea

23、ted susceptible timber species and should be carried out to coincide with the periods of higher fungal activity. NOTE Periods of highest fungal activity are usually in the spring and autumn. If tests have not been conducted at a location previously, local experience should be sought to determine the

24、 most appropriate time of year. The procedures described in this CEN Technical Specification are intended to be carried out by suitably trained and/or supervised specialists. Appropriate safety precautions should be observed throughout the use of the CEN Technical Specification. CEN/TS 15082:20055 1

25、 Scope This CEN Technical Specification specifies a field test method for determining the effectiveness of a product in the prevention of the colonization of freshly felled wood by sapstain fungi and mould fungi. 2 Terms and definitions For the purposes of this document, the following terms and defi

26、nitions apply. 2.1 representative sample sample having its physical or chemical characteristics identical to the volumetric average characteristics of the total volume being sampled 2.2 supplier sponsor of the test (person or company providing the sample of wood preservatives to be tested) 3 Princip

27、le Treatment of several series of test specimens of a susceptible wood species with solutions in which the concentrations of the test product are ranged in a given progression. Treatment of two series of similar test specimens with defined concentrations of a reference formulation. Exposure of these

28、 test specimens to colonization by the natural microflora. Comparison of the effectiveness of the test product with that of the reference formulation and the untreated control test specimens. 4 Test material and apparatus 4.1 Products and reagents 4.1.1 Diluents For water-soluble or water-diluable p

29、reservatives use water of drinkable quality. 4.1.2 Reference formulation Copper-8-quinolinolate. NOTE 1 Details on this wood preservative are given in Annex A. NOTE 2 If experience with another reference formulation is available in field tests in comparison with copper-8-quinolinolate, then an equiv

30、alent reference formulation can be used. CEN/TS 15082:20056 4.2 Apparatus 4.2.1 Dipping tank, suitable for dipping the size of test specimen used (see 6.3) and the volume of solution (see 7.1.1). 4.2.2 Supports, for the test specimens during exposure. The supports shall be made of the same species o

31、f timber as the test specimens or any inert material, that it is to say with no risk or interacting with the test specimens or the reference and test preservative treatments. They shall provide support for the test specimens between 100 mm and 200 mm above the level of the surrounding ground. NOTE I

32、t is convenient to use pallets so that complete stacks can be moved mechanically. 4.2.3 Stickers, to separate the test specimens in the top half of each stack. The stickers shall be made of the same species of timber as the test specimens and treated with the same concentration of preservative, or a

33、ny inert material, that is to say with no risk of interacting with the test specimens or the reference and test preservative treatments. The stickers shall separate the test specimens by (20 5) mm. 4.2.4 Securing bands, to secure the test specimens in the stack during storage. 4.2.5 Exposure site, a

34、n open area free from extremes of local environmental influences, especially industrial pollution. The type of surface (e.g. grass, soil or concrete) shall be the same for all stacks in any test and details shall be recorded in the test report. Any vegetation shall be maintained at a level below tha

35、t of the top of the supports on which the test specimens are stacked (see 4.2.2). The prevailing meteorological conditions during the test exposure period shall be recorded and included in the test report. 4.2.6 Ordinary laboratory equipment, including a balance capable of weighing to an accuracy of

36、 1 g. 5 Sampling of the preservative The sample of preservative shall be representative of the product to be tested. Samples shall be stored and handled in accordance with any written recommendations from the supplier. NOTE For the sampling of preservatives from bulk supplies, the procedure given in

37、 EN 212 should be used. 6 Test specimens 6.1 Species of wood The species of wood to be used shall be susceptible to attack by sapstain and mould fungi. The reference species should be a susceptible pine species, either Scots pine (Pinus sylvestris Linnaeus), Corsican pine (Pinus nigra var. maritime)

38、 or maritime pine (Pinus pinaster). NOTE Tests can be undertaken using other species (e.g. spruce, beech) corresponding to the above characteristics and of particular importance for certain countries, but a reference pine species treated with the reference formulation should also be included to vali

39、date the severity of the test. When the test has been conducted using other species (e.g. spruce, beech) the results are only valid for that species. CEN/TS 15082:20057 6.2 Wood quality The wood shall be free from cracks, stain, decay, insect damage and other defects but sound knots are permitted. T

40、he wood shall not have been water-stored, floated, chemically treated or steamed. The wood shall originate from trees felled in spring or autumn. The trees shall be converted within one week of felling. The wood shall be sapwood containing little resin. A heartwood content of up to 20 % is allowed i

41、n each test specimen. NOTE The heartwood is discounted during evaluation (see 7.4). 6.3 Preparation of the test specimens Prepare test specimens having a cross-section of 100 mm to 120 mm 18 mm to 25 mm and with a sawn finish. The longitudinal faces shall be parallel to the direction of the grain. M

42、ake transverse cuts to give test specimens at least 1 000 mm long. Prepare a sufficient stock solution for the whole test and use within 24 h. 6.4 Dimensions of the test specimens Measure and record the nominal dimensions of at least 10 test specimens per treatment, and calculate the mean surface ar

43、ea of the test specimens. NOTE It is convenient if the same specimens are used to establish surface area and uptake of preservative solution (see 6.5). 6.5 Number and distribution of the test specimens Use at least 110 test specimens for each combination of test preservative or reference formulation

44、 concentration and as untreated control test specimens. NOTE Half the test specimens will be tested whilst close-stacked and half whilst open-stacked (see 7.3). The top and bottom layers of each stack are not assessed. Select the test specimens at random from the stock. Number at least 10 test speci

45、mens per treatment, which will be used to assess uptake of preservative solution. 7 Procedure 7.1 Preparation of treatment solutions 7.1.1 General Prepare sufficient solution of each concentration to treat all test specimens. Each treating solution shall be freshly prepared from the reference formul

46、ation and test preservative. Solutions shall not be prepared by adjusting previously used solutions. Dip the boards either singly or in batches in sufficient solution to fully cover them. After dipping no more than 20 boards, make up the original volume in the tank with fresh solution. NOTE It is de

47、sirable to sample the solution in the dipping tank at the beginning, middle and end of the dipping process to allow chemical analysis of the active ingredient. For products known to be very stable in use, a dipping treatment solution of at least 40 l for each series of 110 planks can be used. CEN/TS

48、 15082:20058 7.1.2 Reference formulation When copper-8-quinolinolate is used as reference wood preservative, prepare concentrations of mass fraction of 1,5 % and 3,0 % (Annex A and 4.1.2). If an alternative reference formulation is used, the two concentrations chosen shall provide a performance equi

49、valent to the specified concentrations of copper-8-quinolinolate. Evidence of equivalence shall be included in the test report. 7.2 Treatment of test specimens Within 24 h of the preparation of the test specimens. Weigh at least 10 randomly selected test specimens per wood species of the numbered test specimens (see 6.5) to the nearest 1 g and record the initial mass, m0. Using the dipping tank (4.2.1), dip each test specimen in the appropriate treating solution for 15 s to 20 s or for the period specified by the supplier. After treatment, allow each of the numbered test