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The key problem of water utility companies in Bosnia and Herzegovina in the fight to reduce the level of non revenue water (NRW) is the lack of a unique methodology with clearly defined steps. The aim of this paper is to show the possibility of accepting the concept for the control of water loss in water supply systems, which provides the International Water Association (IWA), and based on the analysis of the effects of the application of water utility companies adopt the recommended practices as an essential step for the analysis of its water supply system, with the aim of providing quality services, creating their own concept of self-sustaining and achieving customer satisfaction. Regarding the fact, a research was conducted with the aim of determining the level of non revenue water in utilities in Bosnia and Herzegovina. One part of the survey involved assessment for the 20 water utility companies with different characteristics, while the second one is related to the measured data from 7 water utility companies. The analysis of the effects of IWA methodology application for reducing water loss was carried out by experimental measurements on a separate part of the water supply system defined as a district metered area (DMA), in Bosnia and Herzegovina.

Smanjenje potrošnje toplotne energije postiže se primenom odgovarajućih tehničkih rešenja. U cilju smanjenja gubitaka toplote u industriji i energetici primenjuje se toplotna izolacija opreme i instalacija. Pri projektovanju od posebnog značaja je izbor adekvatnog izolacionog materijala i debljine izolacije. Pored osnovnog zadatka koji se odnosi na smanjenje gubitaka toplote izolacijom se postižu i drugi efekti, kao što su: zvučna izolacija, protivpožarna zaštita materijala i zaštita pogonskih radnika od opekotina. U radu su prezentovane osnovne tehničke karakteristike i značaj toplotne izolacije. Na konkretnom primeru je izvršeno praćenja uticaja toplotne izolacije na smanjenje gubitaka toplote.