Your search resulted in 142 documents. Displaying 25 entries per page.
Health and safety in use of antistain chemicals
1993 - IRG/WP 93-50001-29
Health and safety are a very important issues in wood protection nowadays. As for the sapstain control many new chemicals are being used instead of PCP. This has given rise to concern among the regulatory authorities, the formulators of the control agents and the users of treated wood. Are the new products safe to use? How expensive tests must be done to prove that the product is harmless to the w...
I A Linderborg
Conservation of Nypa fruticans and Indigenous Timber Species of Sundarban Mangrove Forest of Bangladesh by Using Preservative Treatment.
2005 - IRG/WP 05-40297
This report describes the possibilities and benefits of preservative treatment of some Bangladeshi wood species. It is concluded that:
Heartwood of Sundri is not easily treatable. The treating schedule of 14.1 kg/cm² pressure and eight hours treatment period may be used for treating sundry logs. During the treatment of Sundri wood must not mix with other species. Other timber species such as Gew...
G N M Ilias
The gaseous environment of Coptotermes lacteus mound colonies before and after mirex treatment
1989 - IRG/WP 1396
While monitoring the halocarbon and hydrocarbon emissions from a dry sclerophyll eucalypt forest in central Gippsland, similar emissions were collected from within several Coptotermes lacteus mound colonies. Samples of the gases (hydrocarbons) from within the mounds were collected before, during and after treatment with mirex-treated wood-decay blocks. All the mirex-treated mounds died within two ...
J R J French, R A Rasmussen, D M Ewart, M A K Khalil
A study on insect pests and preservation of fire-damaged timbers in Da Xing An Ling forest region
1991 - IRG/WP 1499
Investigated insect pest of timbers of Da Xing An Ling forest region by means of sampling inspection. Meanwhile we had researched insects pest situation, regularity occurred and biological nature for fire damaged timbers attacked in the log yard. The results showed that the mainly insect species are small black-marmorated longicorn (Monochamus sutor L). We had eagaged in various small tests of tim...
Lu Wenda, Li Jian, Shao Jing Wen, Liu Yixing, Cui Yongzhi
The development of a field testing technique using Coptotermes lacteus mounds in Australia
1985 - IRG/WP 1270
A method to rapidly screen potential bait substrates placed around Coptotermes lacteus mounds is described. A perforated P.V.C. conduit is buried in a shallow trench in a rectangular arrangement around an active mound. Seven P.V.C. holders containing cork baits are inserted vertically into the conduit around the mound. Within three weeks following installation of the baits around five mound coloni...
J R J French, P J Robinson
Foraging patterns of termite species in the living complexes of Bangkanoon forest plantation, Phuket province, Southern Thailand
2003 - IRG/WP 03-10481
Studies on foraging patterns of termite species in the living complexes of Bankanoon Forest Plantation, Phuket Province, southern Thailand, gave result of 11 species of subterranean termites (Coptotermes gestroi, Microtermes obesi, Macrotermes gilvus, Macrotermes carbonarius, Macrotermes anandalei, Odontotermes feae, Odontotermes proformosanus, Hypotermes makhamensis, Globitermes sulphureus, Micro...
Y Sornnuwat, C Vongkaluang, S Chutibhapakorn
The future for chromium in wood preservation
1985 - IRG/WP 3332
Most water-borne preservatives contain CrVI compounds, originally to reduce corrosion although now also to improve toxicant fixation. Chromium contributes to preservation and this is recognised in, for example, New Zealand and USA where chromium contents are included in calculations of overall preservative activity of CCA formulations, but chromium may also have anti-stain and joinery (millwork) p...
B A Richardson, T R G Cox
Creosote and cancer -Cancer incidence among workers exposed to creosote
1990 - IRG/WP 3572
Creosote is a wood preservative that contains polycyclic aromatic hydrocarbons, which are known to be carcinogenic. Cancer incidence among 919 male workers in Sweden and Norway exposed to creosote in the wood preserving industry was studied. The expected numbers of cases were based on the incidence rates of cancer according to the Cancer Registries of Sweden and Norway. A total of 129 cancer cases...
S Karlehagen, A Andersen, C-G Ohlson
The risk assessment process. Point of view of a biocide manufacturer [Évaluation du risque. Point de vue d'un fabricant de biocide]
1990 - IRG/WP 3568
Risk assessment is an inherent part of our everyday lives. The risk assessment equation combines Hazards and Exposure. For the Wood Preservation Industry, the hazards may be characterised by the toxicity a the ecotoxicity of chemicals and the exposure by the identification of exposed people, of the exposure routes and exposure frequency. To quantify the exposure, good co-operation is required betw...
D Baur
Pentachlorophenol - The US and Canadian experience
1995 - IRG/WP 95-50040-26
Pentachlorophenol ("Penta") is a highly effective and economical wood preservative. The principal use in the United-States and Canada is pressure-treatment of wood; major applications are for railroad ties, pilings, posts, cross arms, and poles. Treatment of wood products with pentachlorophenol typically extends the functional life of wood by at least eight times. Because of the presence of certai...
J Wilkinson
Safe handling of solvents in relation to classification and labelling
1990 - IRG/WP 3569
The classification and labelling of chemical products, safety data sheets and personal protective equipment are topics which at present are given a very high priority in Denmark. The area is very large and may seem extremely difficult to comprehend. The frequent publication of acts and announcements from the authorities does not make the work any easier. In the following I will try explain how we ...
J Haugaard
Information on a project about the conditions of admissibility of wood-protecting agents in connection with environmental protection in Poland
1974 - IRG/WP 57
Wood-protecting agents are compounds acting toxically on fungi and insects. If handled improperly or carelessly, they may exert an action harmful to health and safety of men. This action is concerning: a) workers employed at the production of wood-protecting agents; b) workers employed at the impregnation, or at the transport and handling of impregnated wood; c) inhabitants of buildings with impre...
J Wazny
Wood preservation in Uruguay
1987 - IRG/WP 3404
The purpose of this paper is a brief description of the current status of wood treatment in Uruguay. The forest resources of the country are summarized, the environment, their economic importance and future potential. The present wood treating facilities are described, together with the chemicals used and the standards generally accepted. Wood treated products used in the Uruguayan market are cite...
G Baillod
A combined method for drying and preserving wood in a single step process
2000 - IRG/WP 00-40183
Based on a convective dryer, this process allows to dry and treat wood blocks with diffusible preservatives in the same time. A boric acid solution (heated to fix the wet temperature of the system) is pumped and introduced in the flow system through a venturi, where the air coming back from the drying cell also arrives. The role of the venturi is to create a dispersion of boric acid solution micro...
O Colin, C Dupuis, E Mougel, A Zoulalian, M-F Thévenon
Note and literature survey on the "Eucalyptus borer" Phoracantha semipunctata F. (Col.; Cerambycidae), a pest in between forest and wood
1984 - IRG/WP 1228
In the Eucalyptus-forests of Huelva, Spain, Phoracantha semipunctata appears as a severe forest-pest fatal to trees impaired by drought. The population snowballed in two and a half years, millions of larvae reduce the value of wood to "papermill-quality''. One of the intentions of the paper is to collect knowledge for help and cure. A literature survey forms the main part of the ...
S Cymorek
PXTS; A Metal Free Oligomer Wood Preserving System - A Summary of Data To Date
2004 - IRG/WP 04-30350
The world is continually looking for new wood preservative technology, especially to address environmental concerns. Recent changes in the USA have limited the use of arsenical containing formulations to industrial use through a negotiated voluntary cancellation of most residential label uses. PXTS (Polymeric Alkylphenol Polysulfide) offers a brand new technology that is an all organic system, lik...
M H Freeman, D D Nicholas, D Renz, R Buff
Toxic wood preserving chemicals in the environment: Kenya - a cause for concern
1998 - IRG/WP 98-50101-17
The uncontrolled release of wood preserving chemicals into the environment, in most African countries, is discussed. Kenya has some 25 wood preservation plants, 23 of which use formulations of Copper- Chrome-Arsenate (CCA). The bulk of treated timbers consists of poles and posts used in ground contact. Poor fixation of CCA elements are associated with the species used, Eucalyptus saligna and Acaci...
R Venkatasamy
Survey of North American practice in conditioning forest products before preservative treatment
1972 - IRG/WP 308
Seasoning requirements for the wide range of forest products which are treated with preservatives and fire retardants must be capable of dealing with a very complex set of conditions which are summarized under a number of variables including type and hazard of end use, the most effective distribution of preservative, a wide range of cross sectional dimensions, the possibility of seasoning by a ran...
J Rak, T S McKnight
Developments in wood preservation
1976 - IRG/WP 366
The purpose of this paper is to comment very briefly upon recent developments in wood preservation so that members of the Working Group have a basic knowledge of the activities in other countries. The last paper was prepared in 1974 and this paper refers to developments since that time. The last edition of this paper was welcomed by members of IRG. Many members wrote to the author to express their...
B A Richardson
Wood preservation in Nigeria - Its increasing relevance, observed constraints and potential as a forest conservation option
1992 - IRG/WP 92-3732
The paper discusses the demand and supply of wood and wood products in Nigeria and points out that in view of the large population (88 million) and search for wood for housing and furniture, the demand exceeds supply. There is great shortage of industrial and domestic woods resulting in underutilization of installed machineries in forest industries and low profit margin. Under this prevailing cond...
M A Odeyinde, S C Ifebueme
Survey of practical methods for conditioning of forest products before preservative treatment
1971 - IRG/WP 39
The seasoning of forest products is undertaken for a wide range of end uses and is becoming increasingly required for applications and building construction and secondary manufacturing industries. A wide range of applications of new technology and specifically required seasoning schedules is being actively developed for such requirements, but less attention has been given to the means by which woo...
J Rak, T S McKnight
Needs for wood durability research on planted tree species in the tropics
2008 - IRG/WP 08-10651
The area of forest plantation has been expanding especially in tropical Asia since 1990’s. Most of them are developed for pulp and paper industries and planted with fast growing trees. It is expected that wood from those fast growing trees are also used for value added products such as sawn timber. In order to promote the utilization of fast wood as the resource of value added products, natural...
K Yamamoto, T Toma, Ngo Duc Hiep, Nguyen Trong Nhan
Vacuum drying of European oakwood: Color, chemistry and anti-oxidant potency of wood. Improving appearance in forest value added products
2008 - IRG/WP 08-40432
In hardwoods used for decorative and appearance purposes, wood colour is one of the most important factors of wood quality; in addition colour is related with durability and biological decay of wood. Wood discolouration during drying is mainly affected by heat, light, physiological reactions, combinations of reactions, biochemical and chemical reactions, and micro-organisms attack. In freshly fell...
S Sandoval, W Jomaa, F Marc, J-R Puiggali
The amazing wooden churches from Northern Romania - learning from the past, restoring for the future, preserving the present valuable heritage of forgotten wood building tradition
2009 - IRG/WP 09-10683
The beauty and the uniqueness of the north-western region of Romania called “Maramureş” are well known in Europe. Surrounded by mountains, the region remained to some extend isolated from modern influences, preserving the local village architecture and craftsman traditions learnt and passed on from generation to generation. Local folklore and past heritage sets you back centuries ago when...
R Craciun, R Möller
Efficiency of the Amazon Forest Oils as Preservatives to the Attack of cellulolytic fungi in Pine Wood
2012 - IRG/WP 12-30599
The bobbins of wood are used for storage and field installation of cables from the electricity and telecommunications sectors. There are legal requirements governing the Brazilian ways of treating the wood used in these sectors, aimed at preventing pollution and protecting nature. When exposed to severe environmental conditions in Brazil these products are degraded and occurs many operational prob...
S Silveira, I M S Mendes, R S Paiva, J E Volponi, R C G Comar, R S Cruz