Systems usability framework for evaluating tools i

Authors: Paula Savioja Leena Norros

Publish Date: 2012/03/20

Volume: 15, Issue: 3, Pages: 255-275

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Abstract

This paper presents a methodology with which evaluation of control rooms in safety–critical industry has been carried out The results of two cases of evaluation in nuclear power plants NPP are presented to elaborate the method thoroughly The evaluation methodology draws from conventions of human factors and usability evaluation methods but adds an activity theoretical viewpoint by considering different control room functions in a purposeful activity system A control room has three functions in an activity instrument psychological tool and a communicative tool The introduced evaluation approach allows understanding of quality of the control room on the level of outcomes it produces work practices that it consolidates and the user experience it creates The evaluation approach is demonstrated by presenting baseline evaluations of two hybrid NPP control rooms that were carried out before major upgrade projects were implemented Hybrid control room refers to a state in which modern and original hardwired technological solutions are in use simultaneouslyThe authors have been fortunate to work with an excellent research team We wish to thank project manager Jari Laarni and the whole team Leena Salo Marja Liinasuo Iina Aaltonen Hannu Karvonen and Hanna Koskinen for inspiring collaboration in conducting the work The work presented here has been funded by the Finnish National Nuclear Safety Program SAFIR and the Fortum Foundation We thank the funding organizations for the possibility to conduct the studies The authors thank the collaborating NPPs and their personnel especially the trainers and the operators for their contributions in the evaluation studies

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