[en] During the last ten years, motor traffic has become one of the major sources of air pollution in industrial countries. The objective of this article is to estimate the amount of air pollution, caused by motor traffic, by the method of the carbon balance. The contribution of the different chemical species is calculated for the amount of carbon, emitted by automobiles in the 1.6 kilometer long Craeybeckx tunnel (Antwerp, Belgium). From these results, the total annual traffic emission for different chemical species has been calculated. (A.S.)

[en] The invention relates to an method of making absorbers and the use of the same for oil spill cleanup and for the recovery of oil spill in water. The absorber is designed as an oil retention boom consisting of chemical pulp fibres from newspapers or the like placed in an open net structure and admixed with an adhesive compound consisting of natural resin, aluminium sulphate and wax. The absorber consists of elements formed as strips or flakes with a specified flat weight and dimension. In order to obtain water-repellency, the elements are to be heated to about 105 ^oC in several hours and finally covered with a thin layer of paraffin wax. The oil spill can be recovered by squeezing the absorber. The retention boom can be reused

No abstract available

[en] This work demonstrated the applicability and feasibility of a mechanical decontamination method that not only provides improved decontamination factors over dilute chemical methods, but nearly eliminates the need for special waste handling of decontamination wastes (water only). The method also provides for a clean base metal surface for which a commercially available passivation process can be applied to the component which is to be returned to service in the nuclear system. Application of the method was demonstrated to be very rapid and straightforward. Tooling and related equipment are readily available to the nuclear industry at minimal costs. The tools used for the application do not become highly contaminated to the point where special handling is required

[en] The US Coast Guard and the American Society for Testing and Materials (ASTM) Committee F-20, in cooperation with Environment Canada, have embarked on an ambitious program of standards development in the area of marine oil spills. Standards development will proceed in the areas of barriers, skimmers, pumps, beach cleanup, sorbents, bioremediation, in-situ burning, temporary storage devices, communications, and remote sensing. The methodology of standards development and the progress to date are reported

[en] Over the last twenty years, a significant number of cases of radioactive pollution has been recorded in metallurgical processes. However, it is not certain whether the pollution was caused by increased uncontrolled disposal of waste containing radionuclides or whether it was the result of increased radioactivity monitoring and control of metallic scrap. Many metal producers in the world have therefore implemented systematic monitoring of radioactivity in their production processes. Special attention was given to monitoring radioactivity in steel making processes, which is still the most applied construction material with an annual output of over billion tonnes all over the world. Drawing on the experience of the best known steel producers in Europe and world, Croatian steel mills find it necessary and justified to introduce radioactivity monitoring and control systems of radioactive elements in steel scrap, semi-finished and finished products. The aim of this paper is to point out the need to introduce the radioactivity monitoring and control in steel and steel-casting production, and to inform experts in Croatian steel mills and foundries about potential solutions and current systems. At the same time, we wanted to demonstrate how implementation of monitoring equipment can improve quality management and environmental management systems. This would render Croatian products competitive on the European market both in terms of physical and chemical properties and in terms of product quality certificates and radioactivity information. Since we lack our own standards and regulations to control both domestic and imported steel scrap, semi-finished products (crude steel, hot and cold rolled strip) and finished products, we need apply current international recommendations and guidelines, until we design our own monitoring system and adopt relevant legislation on the national level. This paper describes basic types of radioactivity monitoring and control systems, the most frequent requirements monitoring equipment has to meet, as well as the measurement and information flow in their application in steel and steel casting production.(author)

[en] After a broad description of APPA's (Association for Prevention of Atmospheric Pollution) activities in France since it was created in 1958, the structures of the various types of measuring systems (at July 1, 1991) are presented: urban centers networks, industrial areas networks, including forest acid rain monitoring. A list of the main continuously measured pollutants is given (high acidity, settling dust, sulfur dioxide, black smoke, suspended dust, fluorine, etc.)

[en] Welcome to a workshop on contamination Control techniques. This work shop is designed for about two hours. Attendee participation is encouraged during the workshop. We will address different topics within contamination control techniques; present processes, products and equipment used here at Hanford and then open the floor to you, the attendees for your input on the topics

[en] The invention deals with an equipment for recovery of liquid tank cargo from a seagoing vessel in order to stop a leakage. It comprises a container of fabric which can be packed together for stand-by storing and which can be placed in the sea in order to receive at least some of the tank contents, by pumping it through at least one hose which is connected or permanently coupled to the container. 2 figs

[en] This paper reports that the threat of oil spills is growing with the increasing use of larger tankers, the expansion of offshore oil exploration, and-as was demonstrated recently in the Persian Gulf-the dangers of war and terrorism. Aware of the environmental havoc that massive spills can cause, engineers are working hard to devise effective methods of scooping oil from the water's surface and cleaning contaminated shorelines. Techniques are being developed, which combine mechanical, chemical, and biological processes to contain spills