%0 Journal Article %T Human System Interface Design and Operators Cognitive Strategies %A P.V.R. Carvalho %A I.J.A.L. SantosM.C.R. Vidal %J The Ergonomics Open Journal %D 2008 %I Bentham Open %R 10.2174/1875934300801010039] %X This paper focuses on the influence of Human-System Interface (HSI) design on nuclear power operators¡¯ actual work. During plant normal operation, operators¡¯ work comprises activities like monitoring, the use of procedures, cooperation mechanisms, and cognitive strategies for problem solving and decision-making. The work is characterized by constant changes in the focus of attention and the dynamics of conflicting activities. This paper explores the relationships between the operators¡¯ cognitive strategies and the constraints imposed by the HSI. The method employed for data collection was a field study during the operators¡¯ actual work in the plant control room. Our findings show that the HSI introduces background noise in the plant operation that shapes actions and decisions made by the operators. %U http://www.benthamscience.com/open/toergj/articles/V001/39TOERGJ.htm