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Description of a trial with wood preservatives against marine wood boring organisms
1975 - IRG/WP 412
Wood situated in sea water along the Atlantic coasts of the Nordic countries is attacked by marine wood boring organisms. Timber constructions in these waters therefore must be preservative treated. In order to evaluate the effect of various preservatives against marine wood borers, the Nordic Wood Preservation Council (NWPC) organized a rather extensive trial in 1972. In the absence of and while awaiting international standard methods for testing preservatives it was felt that there was a need for a Nordic standard method. The 1972 trial was consequently planned and performed in close cooperation with the standardisation work. The complete standard method was published by NWPC in 1973 (NWPC Standard No. 1.4.2.2/73).
E Norman, B Henningsson


Effects of CCA treatment on settlement and growth of barnacles under field conditions
1998 - IRG/WP 98-50116
As part of a field experiment at seven European marine sites evaluating the effects of CCA treatments on non-target marine organisms, panels treated to nominal loadings of 12, 24 and 48 kg/m3 CCA were exposed at marine sites around the coast of Europe. Within two weeks of exposure, a heavy settlement of barnacles took place on the panels exposed intertidally in France. The intensity of settlement was measured after four weeks. It was found to vary significantly with preservative loading and this variation could be described by a positive linear regression - the higher the loading, the higher the numbers of barnacles settling. The survival and growth of barnacles was assessed after six months exposure. Observations of numbers of identified adults on test panels from other sites suggested that some species of barnacle settle preferentially on CCA-treated wood while others do not. The findings give an insight into the impact during the period of greatest potential for leaching of heavy treatments with CCA on organisms living in intimate contact with the treated surface.
S M Cragg, C Brown, R M Albuquerque, R A Eaton, P Goulletquer


Protective effectiveness of antifouling coatings for wooden boats in the Northern Adriatic Sea
2013 - IRG/WP 13-40634
There are various conventional biocide containing antifouling coatings and some more environmentally friendly paints for boats on the market. However, the question of their performance in accordance with the manufacturers’ statements or guaranties arises. The aim of our preliminary investigation was to state which type of antifouling coating exhibits better effectiveness against fouling organisms in the Northern Adriatic Sea. In order to elucidate this question, the impregnated and coated specimens of Scots pine wood were exposed to the sea water in the Port of Koper, Slovenia. The specimens were treated with different types of antifouling coatings. The most effective ones were those of the soft and hard types. On the other hand, the tested nano-based antifouling finish did not exhibit any protective efficiency against fouling.
M Petrič, M Humar, J Adamek, B Kričej