Background and activities


  • System reliability theory
  • Reliability, Availability, Maintainability, and Safety (RAMS) analysis
  • Risk analysis
  • Reliability Centered Maintenance (RCM)
  • Reliability assessment of oil/gas subsea and well equipment
  • Probabilistic modeling

Professional career:

  • 2010-2011 - Visiting professor, Ecole Nationale Supérieure d'Arts et Métiers (ENSAM), ParisTech, Aix en Provence, France
  • 2005-2006  - Vice dean (research), Faculty of Engineering Science and Technology, NTNU
  • 2002-2003 -  Visiting professor, Dept. Productique et Automatique, Ecole des Mines de Nantes, France
  • 1996-2002 - Vice dean, Faculty of Mechanical Engineering, NTNU
  • 1995-1996 - Visiting professor, Civil and Offshore Engineering, Heriot-Watt University, Edinburgh, Scotland
  • 1990 - Scientific Advisor, SINTEF Safety and Reliability
  • 1994 - Professor, Dept. of Production and Quality Engineering, NTNU
  • 1990-1994 - Professor, and head of Dept. of Machine Design, NTNU
  • 1986-1990 - Division director, SINTEF Safety and Reliability
  • 1984-1986 - Research Scientist, SINTEF Safety and Reliability
  • 1980-1984 - Research Scientist, SINTEF Machine Design
  • 1977-1980 - Lecturer, Dept. of Mathematical Statistics, NTNU
  • 1976-1977 - Scientific assistant, Dept. of Mathematical Statistics, NTNU


I am not a member of any other organization/society.



Other publications:

I have written many papers. None of these represents any scientific breakthrough, but some of them may be useful. 

Web Presentations:

I have made a high number of web-pages. The most important are found on the ROSS-site.


In 2004, I received the "Our best lecturer"-award from the mechanical engineering students at NTNU - and I really appreciated this award.

I have never received any other prices or awards.

Keynote Presentations

The number of keynote presentations is a commonly used indicator of research excellence. In this respect, I have nothing to be proud of, since I have given only a single keynote presentation at an international conference in my whole carreer.

I have been invited to give keynote presentations many times, but always had a good reason for saying "no".

Editor - Member of Editorial Board

Another performance indicator is related to whether or not you are editor of a journal and how many editorial boards you are member of. My score is here as low as the previous one. I am reviewing a high number of papers every year, but has always been reluctant to being member of editorial boards. I have, however, deviated from this policy in a couple of cases - so you may find my name on the editorial board of 2-3 journals.

Supervision of PhD and Master Students

I have supervised more than 300 Master theses and 15 PhD theses. It is a pleasure to see that so many of my students have made success, and I hope that at least some few of them remember me with a small trace of gratitude.


Scientific, academic and artistic work

A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database

Journal publications