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Report on the activities of the European Standardization Committee CEN/TC 38 'Methods of Testing wood preservatives'
1980 - IRG/WP 279 E
Determination of the preventive efficacy against wood destroying basidiomycetes fungi, EN V 839 - CEN/TC 38 WG 9
1993 - IRG/WP 93-20015
The WG 9 of CEN TC/38 has presented to EC a mycological test to assess efficacy of preservatives applied by surface process. This method is now an experimental standard (EN V 839) which has to be approved by the different european delegations. The following paper is not the standard as it has been proposed but is a presentation of the principle of the method. The experimental standard specifies a laboratory method of test which gives a basis of the assessment of the preventive action of a wood preservative when applied as a surface treatment against Basidiomycetes fungi. This method is applicable to formulations of preservatives in a ready to use form (organic formulations, organic water-dispersible formulations, water-soluble materials). Series of susceptible wood species specimens are treated on longitudinal faces whith the preservative in test using brushing as surface procedure. Test specimens are then exposed by an intermediate mesh to feeder blocks infestedby pure culture of Basidiomycetes fungi in sterile conditions and penetration of fungi is assessed on cross section sawn in the samples at the end of the test.
Report of CEN/TC 38
2002 - IRG/WP 02-20252
Report of CEN/TC 38
2003 - IRG/WP 03-20279
An annual update on activities in CEN/TC 38.
European standardization for wood preservation
1988 - IRG/WP 2321
Rapport sur l'activité du CNE/TC 38 'Méthodes d'essais des produits de préservation du bois'
1980 - IRG/WP 279
Draft Business Plan of CEN/TC 38 - Durability of wood and wood-based products - Introduction
2000 - IRG/WP 00-20207
CEN Technical Committees and Business Planning. The extension of formal business planning to CEN Technical Committees (CEN/TCs) is an important measure which forms part of a major review of business processes (known as 'Optimization'). The aim is to align the CEN work programme with expressed market needs and to ensure the adequate resourcing of projects through their development stages in the CEN/TCs. Your role in the implementation of the Business Planning concept will contribute significantly to the overall effectiveness of European standardization. We express our sincere appreciation and thanks for your time in reviewing this Business Plan.
Rapport sur l'activité du CEN/TC 38
1983 - IRG/WP 2204
Biocides - Efficacy assessment and doses for wood preservatives (product type 8). Local/geographical aspects. Termite control as case study
1999 - IRG/WP 99-20181
Currently, the efficacy of a wood preservative, as biocidal product type 8, is assessed as a ‚critical value' (CV), an efficient dose (retention in wood at a given depth of penetration). CVs are planned to be adapted for exposure to basic target organisms (5 hazard classes) and additional requirements concerning the occurrence of local target organisms in relation with climate, building design and relevant economical impact. Among them, the termite case study is illustrative. The vote of a french law, on 26 may 1999, aiming to protect consumers and to organize termite control puts termites, a "local target at the euro scale and a universal one in some euro territories", in the spotlights of actuality and helps to point out some of the remaining questions raised by the implementation of Dir 98/8 on Biocides. Based on CEN/TC/38 simulated use tests, which doses have to be used for conditions of exposure and climate, ranging from polar to tropical? Practical proposals are made to take into accound local prescription based on actual target organisms, and move on to standard biocide profiles.
Rapport sur l'activité du CNE/TC 38 'Méthodes d'essais des produits de préservation du bois'
1977 - IRG/WP 288
Work program of CEN/TC 38 (April 1993). Durability of wood and wood-based products
1993 - IRG/WP 93-20012
Work program of CEN/TC 38 (January 1994). Durability of wood and derived materials
1994 - IRG/WP 94-20019
Work programme of CEN/TC 38 (March 2000) and European publications
2000 - IRG/WP 00-20206
Remind of stage significance Stage 32 : Working document existing and circulated in the technical body (TC, WG). Stage 40 : Document available in the CEN/CS to start CEN/CENELEC enquiry (6 months). Stage 43 : Second CEN/CENELEC enquiry started (2 to 4 months). Stage 49 : Document available in the CEN/CS to start formal vote or ENV vote. New scope of the CEN/TC 38 " Standardization of the natural or conferred durability of wood and wood-based products against biological agents and their characteristics associated with exposure ". " Normalisation de la durabilité naturelle ou conférée du bois et de ses produits dérivés vis -à-vis des agents biologiques et leurs caractéristiques associées à leur exposition ". " Normung der natürlichen oder durch Behandlung herbeigeführten Dauerhaftigkeit von Holz und Holzwerkstoffen gegenüber Organismen und deren Eigenschaften mit der ensprechenden Exponierung ".
Work programme of CEN/TC 38 (April 1999) and European publications
1999 - IRG/WP 99-20165
Scope of the CEN/TC38: Standardization of the characteristics of natural or conferred durability of wood and its derived materials against biological agents, including the characteristics of protection products and associated processes to obtain this durability. This applies in particular to: - the identification of hazard classes-, - the test methods (wood preservatives and treated wood and wood based materials) and interpretation of the results; - the specification of wood preservatives and treated wood by classes of hazard including processes-, - quality control methods-, -terminology.
Report of activity of CEN/TC 38: Test Methods for Wood Preservatives
1987 - IRG/WP 2287
Rapport sur l'activité du CEN/TC 38 "Méthodes d'essais des produits de préservation du bois"
1982 - IRG/WP 2188
Work programme of CEN/TC 38 (May 1995) - Durability of wood and derived materials
1995 - IRG/WP 95-20069
Standardization of the characteristics of natural or conferred durability of wood and its derived materials against biological agents, including the characteristics of protection products and associated processes to obtain this durability. This applies in particular to: - the identification of hazard classes; - the test methods (wood preservatives as treated wood and wood based materials) and interpretation of the results; - the specification of wood quality control methods; - terminology. Remind of stages significance: Stage 32: Working document existing and circulated in the technical body (TC, WG); Stage 40: Document available in the CEN/CS to start CEN/CENELEC enquiry (6 months); Stage 43: Second CEN/CENELEC enquiry started (2 to 4 months); Stage 49: Document available in the CEN/CS to start formal vote or ENV vote; Stage 64: EN available
CEN/TC 38 progress report 1997
1997 - IRG/WP 97-20128
In accordance with the resolutions 1 to 7 taken at the 33th meeting of CEN/TC 38 (Paris November 1996), it was decided to created 6 working groups and to maintain the WG 12 as follows: 1 WORKING GROUPS WG 21 Durability - Classification (Hazard classes - Natural durability) (ConvenorMr DEMANGE) WG 22 Performance - Assessment and Specifications (Treated wood - Wood perservatives) (Convenor Mr WILLEITNER) WG 23 Fungal testing - (Basidiomycetes - Microfungi) (Convenor Dr CAREY) WG 24 Insect testing - (Beetles - Termites) (Convenor Dr RUDOLPH) WG 25 External factors (Field tests - Preconditioning - Permanence of ingredients) (Convenor Mr SlMONIN) WG 26 Physical/Chemical factors (Analytical methods) (Convenor Mr JERMER) WG 12 Creosotes (Convenor Mr VAN STEERTEGEM)
Work Programme of CEN/TC 38 (April 2001) and European Publications
2001 - IRG/WP 01-20234
New scope of the CEN/TC 38: " Standardization of the natural or conferred durability of wood and wood-based products against biological agents and their characteristics associated with exposure ". " Normalisation de la durabilité naturelle ou conférée du bois et de ses produits dérivés visà-vis des agents biologiques et leurs caractéristiques associées à leur exposition ". " Normung der natürlichen oder durch Behandlung herbeigeführten Dauerhaftigkeit von Holz und Holzwerkstoffen gegenüber Organismen und deren Eigenschaften mit der ensprechenden Exponierung ". CEN/TC Structure and Resources: This section gives an overview of the existing and planned standardisation structure for this CEN/TC and its resources, which are required to be able to elaborate the above listed projects. Only structures directly responsible for standardisation projects (WIs) are listed. Therefore, no co-ordination or advisory groups are included. Again, the aim of this listing is to demonstrate the adequacy of available resources with regard to the anticipated workload. CEN/TC 38 - Durability of wood and derived materials Chairperson : Mr G.Ozanne Secretary : Mr R.Hüe CEN Member responsible : AFNOR Translation workload is planned for per individual work item : Yes by DIN and AFNOR Editing Committee Convenor : Secretary : Mr.R.HÜE Professional standardisation support is available : Yes AFNOR English language expert available : Yes Ms JAMES French language expert available : Yes Mr. HÜE German language expert available : Yes Mrs LUDWIG Additional human resources that the Editing Committee would like to participate in their work, e.g. specific expertise: Convenors whose drafts are revised during the E.D. meeting attend to it normally and the Secretary provides coordination and the follow of the rules for drafting. CEN/TC 38/WG 12 - Creosotes The scope of the WG is : Standardisation of sampling and analysis methods of creosotes and of creosoted treated wood subjected to regulations(13th amendment of the Directive 76/769/EEC).. Convenor: Mr G.Van Steertegem Secretary : CEN Member responsible : IBN Professional standardisation support is available : Yes Balanced participation of interested groups is ensured : Yes CEN/TC 38/WG 21 - Durability classification (hazard classes- natural durability) The scope of the WG is Standardisation of terminology ;the definition of the biological hazard classes and the classification of the natural durability of solid wood of importance in Europe... Convenor: Mr A.Demange Secretary : Mrs Thomassin CEN Member responsible : AFNOR Professional standardisation support is available : Yes AFNOR Balanced participation of interested groups is ensured : Yes CEN/TC 38/WG 22 - Performance - Assessement and specifications(Treated wood-Wood preservatives) The scope of the WG is : Standardisation for the classification of the minimum performance requirements for wood preservatives for the preventive and the curative treatement of solid timber against biological deterioration in relation with the biological tests according to the hazard class .Also the classification of presertative-treated solid wood in terms of preservative penetration with guidance on a classification of retention.. Convenor: Dr H.Willeitner Secretary : Mr.B. TREPKAU CEN Member responsible : DIN Professional standardisation support is available : Yes DIN Balanced participation of interested groups is ensured : Yes DIN CEN/TC 38/WG 23 - Fungal testing (basidiomycetes-microfungi) The scope of the WG is : Standardisation of biological tests for the determination of the preventive or curative efficacy of wood preservatives against sapstains or wood destroying basidiomycete fungi... Convenor: Vacant Secretary : CEN Member responsible : Vacant Professional standardisation support is available : Yes BSI CEN/TC 38/WG 24 - Insect testing (beetles-termites) The scope of the WG is : Standardisation of biological tests for the determination of the preventive or curative efficacy of wood preservatives against beetles and termites (woodboring insects).. Convenor: Dr D.Rudolph Secretary : CEN Member responsible : DIN Professional standardisation support is available : Yes DIN Balanced participation of interested groups is ensured : Yes CEN/TC 38/WG 25 - External factors (field tests - reconditioning-permanence of ingredients) The scope of the WG is : Standardisation of the field tests in ground contact and out of ground contact,of the methods for determination of the permanence of active matters in the treated wood .after evaporation to air and leaching into water, of the conditions of preconditioning before the biological tests.. Convenor: Mr J.B.Simonin Secretary : CEN Member responsible : AFNOR Professional standardisation support is available : Yes AFNOR Balanced participation of interested groups is ensured : Yes CEN/TC 38/WG 26 - Physical/chemical factors ( analytical methods) The scope of the WG is : Standardisation of analytical methods to determine compliance with EN 351 and to facilitate the determination of microcontaminants in wood and woodbased products... Convenor: Mr J.Jermer Secretary : CEN Member responsible : SIS Professional standardisation support is available : Yes Balanced participation of interested groups is ensured : Yes CEN/TC 38/WG 27- Exposure aspects The scope of the WG is : Standardisation with reference to the Biocidal Products Directive (98/8/EC) of methods for measuring environmental emissions from wood preservatives during application , wood in service which has been treated with wood preservatives, and from treated wood after its service life. The first priority is to draft methods to measure environmental emissions from wood in service which has been treated with wood preservatives. The work will be carried out in liaison with OECD. Convenor: Dr G. Deroubaix Secretary : CEN Member responsible : AFNOR Professional standardisation support is available : Yes AFNOR Balanced participation of interested groups is ensured : Yes
International standards – which future?
2003 - IRG/WP 03-20277
A review of past and current activities at CEN/TC/38, within the scope of "wood durability, in relation with exposure" suggest that former activities linked to wood preservative efficacy shall formally include the balance safety/efficacy as a main part of the risk/benefit patterns. One way is an extensive development of liaisons. The case of OECD/CEN cooperation on emission assessment is a positive example. Matters of international harmonization ISO/CEN are perceived as maintenance. Risk reduction shows serious potentialities at the local, application stage, which is typically a sector of services aiming to limit the widespread use of substances and doses (baiting, on-site preventive and curative, maintenance), opening a scope of guidance for services where the skill is based on local adaptation, optimization and pre-estimated options. More accurate parameters are necessary to facilitate prescription.
Proposed methodology for the assessment of safety indexes
1990 - IRG/WP 3562
Safety Indexes (SI)s are developped on the same concept as Efficacy Indexes (EI)s: EIs are retentions of wood preservatives (percentages of the critical values "efficacy") which are presumed efficient for a given biological class of risk. In the same way, SIs are retentions of wood preservatives (percentages of the critical values "safety") which are taken as acceptable for human health and the general environment. EIs and SIs as well are derived from different types of bioassays and related to objectives of quality which may be either regulatory or harmonized within the programmes of the Standard Committees (CEN TC/38 for example). Critical Values are characteristics of wood preservatives; EIs and SIs are characteristics of treated wood; they vary with the different classes of risks.
CEN Draft (38 N 460E) Standard: Test method for determining the protective effectiveness of a preservative in the marine environment
1986 - IRG/WP 4132
This European Standard describes a marine test method which provides a basis for asseasing the effectiveness of a wood preservative used to prevent attack of timber in sea-water by marine borers. The method is only suitable for testing preservatives which are intended to prevent attack by marine wood boring organisms of treated timber for use in more or less permanent contact with sea-water. It is not suitable for assessing the effectiveness of preservatives against micro-organisms. The main objective of the method described is to evaluate the relative effectiveness of a wood preservative applied by vacuum/pressure impregnation. For this reason permeable timbers are used throughout so that the protective efficacy of various retentions of the preservative can be determined. However, it is recognized that modifications of the method may be used for other purposes, e.g. to determine the relative efficacy of a preservative treatment or to determine the natural durability of the heartwood and sapwood of a selected timber species. The method is primarily intended for testing in temperate waters where Teredine and Limnoria borers dominate. However, it is also capable of being used in tropics where attack by Pholads and specific Crustacean borers may be very destructive. It has to be considered that the test has to be run for a minimum period (usually for 5 years or until the point of failure) before any interpretation of the results can be made. Variations in the test conditions can be expected from one test site to another depending on temperature, salinity, population density of the various borer species etc. This will inevitably influence the general rate of attack. However, by comparing the results obtained for samples treated with the test product with those obtained with a reference preservative and those obtained with untreated control samples, the relative protective effectiveness of the product tested can be evaluated.
European standardization for wood preservation
1989 - IRG/WP 2335
Some aspects of laboratory and field testing methods of antitermite wood preservatives
1973 - IRG/WP 235
Various methods for laboratory testing of antitermite activity of wood preservatives are described. The results of simultaneous tests of three water-borne preservatives, according to the various methods are discussed, and comparison is made with results of field tests on the same three preservatives, showing a fairly good accordance between laboratory results and field results.