Förbättrad provtagning för säkrare analyser : Kartläggning av provtagningsanläggningen i Aitik anrikningsverk och rekommendationer för omkonstruktion och underhållsarbete med perspektiv ur RAMS och LCC

Sammanfattning: Using a more reliable sampling system Aitik can have a greater control over the enrichment process and thus have a major prerequisite for increasing the profitability of the company. An increased production, according to the new production target, are putting an increased pressure on the analysis precision and process control to maintain the high quality of the copper concentrate. By reconstruction of the waste weir for separation of Mp and Mp Rep + S Rep is a further need to invest in a more reliable operation and a more well-devised maintenance of the sampling system. By taking the entire life-cycle thinking in procurement Aitik can save large resources and also increase the overall reliability of the equipment in long term. The project aims to increase the reliability of the analyzes in the concentration plant and the goal of the study is to provide a guide for how Aitik, in different ways, can obtain more representative samples and higher availability for sampling. With the help from experienced experts in the areas of operation, maintenance and analysis in Aitik, Boliden and Garpenberg improvement suggestions have been collected, and together with perspectives from a literature study, several potential solutions has been found for the sampling system. Redesign will make sampling more functional and easier to work with and an optimal sampling will require resources to optimize other parts of the system: from the test socket until the sampling equipment. To maintain the system functions for the entire sampling system preventive maintenance activities, primarily in the form of cleaning and replacement of wearing parts, is required. And by identifying the item number and 5S routines to the application Quicktag better conditions for their staff regard the maintenance of the equipment can be created. Additional responsibilities of the company to enable longer system life is to develop a detailed specification for the supplier containing drawings, exploded diagrams, maintenance manuals and maintenance instructions, warranty support and inventory management regarding the spare parts warranty, standard parts and recommendations for inventory planning. In addition, the company should look into the possibility of coordinating parts management within the koncern and enhance sharing information and experiences within the koncern and for staff in Aitik to jointly optimize both operations at large and to improve sampling systems in all concentration plants. To apply NBW (New Boliden Way) for work on the sampling equipment would also be a step towards Boliden's goal for NBW implementation of activities for continuous improvement of sustainable development, improved quality and greater competitiveness in the market.