Swedish nuclear power plant control room crews have training sessions in full scope simulators every year. These sessions are designed to prepare operators to cope with incidents and accidents. The aim is to develop operators’ knowledge, skills and abilities necessary to operate the nuclear power plant in a safe manner. Training sessions is an opportunity to practice and develop the crews’ teamwork, decision processes and working strategies. The purpose of this study was to explore if and how the instrument Shared Priorities can support training of nuclear power plant control room crews. Shared Priorities is an instrument to measure teams’ shared awareness of a situation and has in earlier studies been used in military and student teams. During the simulator re-training period of control room crews, 14 crews used the instrument Shared Priorities in one or two of their training scenarios. The instrument consists of two steps. Firstly, crew members generate and prioritise a list of five items they think are most important for the crew to cope with in the scenarios current situation. They also rank another crew member’s list. Secondly, the crews and instructors perform a focus group discussion based on the generated lists. Results from questionnaires, focus group discussions and an interview with instructors showed that operators and instructors believe that Shared Priorities can support their training in several ways. Crews see meetings and other disseminations of information as an essential part of maintaining shared understanding of different situations. They believe the instrument may help crews reflect upon and develop their meeting procedures. Operators and instructors also believe that by using the instrument it can help crews to increase their understanding of having a shared situation understanding and shared vision. However the procedure when using Shared Priorities has to be modified in order to be able to support crews’ training in an optimal way.

While the concept of situation awareness have received a lot of attention over the past 15 years and many different measures have been developed and tested, the concepts of team situation awareness and shared situation awareness have not gotten as much attention and less progress has been made in developing a meaningful and validated measure. Thus, the purpose of this study is to operationalize the concept of shared situation awareness and test its consequences and relation to other concepts. In this study a new measure for shared situation awareness was developed and its potential evaluated. The measure was a shared priorities measure where the participants of the study each wrote down and rank ordered five factors they thought were important for good team performance in the situation. The factors were then scrambled and handed over to the other participant who once again ordered them according to priority. The correspondence between the two participants’ ratings was hypothesized to correlate with shared situation awareness. The results show that the shared priorities measure in this study did not relate to shared situation awareness. Several methodological concerns was identified which could have affected the results. The measure did relate to subjective ratings of cooperation which is very interesting and it is suggested that the measure captured aspects of teamwork. The shared priorities measure was easy to employ, required little preparation, has a high face-validity and is a promising addition to team research. / Under de senaste 15 åren har konceptet situationsmedvetande uppmärksammats en hel del, och många mått har utvecklats och blivit testade. Däremot har inte konceptet delat situationsmedvetande kommit lika långt i form av metodutveckling och validering. Syftet med denna rapport är att operationalisera begreppet delat situationsmedvetande och pröva det mot andra koncept. Inom ramen för detta arbete utvecklades ett nytt mått för delat situationsmedvetande som också testades empiriskt. Måttet mäter hur väl ett team har delade prioriteringar. Varje deltagare genererar fem faktorer för vad som är viktigt för god teamprestation i situationen och rangordnar dem i prioritetsordning. Dessa faktorer blandades sen om och delas ut till den andre teammedlemmen som i sin tur rangordnar faktorerna i prioritetsordning. Hur väl faktorernas rangordning korresponderar med varandra antogs vara ett mått på teamets delade situationsmedvetande. Resultatet visar att rangordningsmåttet inte har något samband med subjektivt bedömt delat situationsmedvetande. Flera metodologiska problem identifierades som kan ha påverkat resultatet. Däremot korrelerade rangordningsmåttet med hur väl samarbetet i teamet ansågs fungera, vilket tyder på att måttet fångar aspekter av hur teamet fungerar som team. Rangordningsmåttet var enkelt att använda, krävde lite förberedelse, har hög face-validity och verkar vara en möjlig väg att fortsätta studera team.