Säkerhetsklassificering av dammar : En kartläggning av system i Sverige, Norge, Finland, Schweiz, Kanada och USA

Sammanfattning: In a comparing survey this thesis investigates classification systems for dams in Sweden, Norway, Finland, Switzerland, Canada and USA. The investigation is aiming at an understanding of how potential consequences of a dam failure are taken into account when classifying dams. Furthermore, the significance of the classification, regarding the requirements on the dam owner and surveillance authorities concerning dam safety is considered and reviewed. The thesis is pointing out similarities and differences in the line of dam safety. The survey of dam safety is firstly based upon legal requirements in the different countries and secondly on guidelines regarding dam safety. Dam owners generally are ultimately responsible for the safety of their dam, and often have their own routines regarding how this safety is to be achieved. In this thesis, however, the legal requirements are mainly focused upon. The investigation has resulted in an outlining of eight areas, where the classification systems in the various countries have been compared. The result has shown that although the consequence based classification systems of dams generally are based on similar parameters, the evaluation and determination of consequences due to dam failure differ, as do the system of responsibility regarding surveillance authorities.