Mary Ann Lundteigen

Professor in Reliability Assessment Department of Mechanical and Industrial Engineering Faculty of Engineering
+47 73597101 +47 93059365
S. P. Andersens veg 5, Valgrinda * 2.365a

Background and activities


CV is also found at

Lundteigen has a master in Technical Cybernetics (1993) and a PhD in RAMS (2009) from NTNU. She is employed as full time professor from January 1 2014. In the period from 2014- 2016, she has headed the RAMS group, and she is now the co-director in the research driven Centre for innovation in subsea production and processing (SUBPRO) as the co-director (see


  • Professor at the Department of Production and Quality Engineering
  • Member of the RAMS group - Reliability, availability, maintaince, and safety
  • Industry experience from oil and gas industry, including a previous postion offshore (at Ekofisk) and as a principal specialist with DNV in reliability and safety instrumented systems
  • Applied reseach experience from SINTEF
  • PhD in safety and reliability assessment of safety instrumented systems:


  • Safety instrumented systems
  • Reliability assessments
  • Independence and common cause failures
  • Reliability requirements in light of environmental challenges
  • SIL
  • Safety integrity and risk acceptance
  • Drilling and wellintervention systems
  • Safety and equipment protection for subsea and topside oil and gas production and processing systems
  • Railway signalling systems
  • SIS related standards (IEC 61508, IEC 61511, OLF 070, En 50126, EN 50129, ISO 26262, IEC 62061, etc) 

Professional career

2014-: Professor, RAMS group at NTNU

2013 : Adjunct Professor, RAMS group at NTNU

2012-2013:  Principal Specialist DNV

2010 - 2012: Professor, RAMS group at NTNU

2009 - 2010  — Post doc position, RAMS Group at NTNU.


  •  Ph.D. Scholarship holder, RAMS Group.
  • Awarded the ExxonMobil price for best applied doctorial thesis at the Doctoral Degree Awards Ceremony at NTNU on June 3rd 2009. See here for more information


Research Scientist, SINTEF Institute ICT, Department for Applied Cybernetics. Group leader for Safety Critical Systems. Specialist areas: Safety Critical Systems, Integrated Operations/E-field, Petroleum Industry and Railway signalling systems.

1999-2001  — Automation Engineer (Automatiseringsleder);
Responsible for Automation systems at Nidar - Campaign based maintenance.


  • Offshore Supervisor Electrical & Automation department, Specialised Maintenance, Phillips Petroleum Co Norway.
  • Instrument engineer, Phillips Petroleum Co Norway; Offshore support and optimisation projects of offshore installations.
  • Trainee, Phillips Petroleum Co Norway.


Professional memberships

List of PhD students


  • Hui Jin (2013): A contribution to reliability assessment of safety-instrumented systems (co-supervisor)
  • Inger Lise Johansen (2014): Risk assessment in risk-informed decision-making: Foundations, challenges, and approaches (co-supervisor)
  • Maryam Rahimi (2013): A contribution to reliability qualification of new technical equipment – with focus on subsea production equipment (co-supervisor)





Abraham Jigar


Reliability Engineering of Safety-critical Systems

The objective of this PhD work is to develop new methods, knowledge, and insight into the engineering of safety-critical systems, and to the balancing of system attributes such as reliability, availability, maintenance/maintainability, and safety (RAMS). RAMS engineering in this context includes the initial phases of the lifecycle of a system, including the definition of performance requirements, and the implementation and validation of these before the system is put into operation (see also Figure 1). The main attention of this PhD work would be devoted to the oil and gas industry in general and subsea production and processing in particular



Juntao Zhang

Incorporating reliability and availability in the design of subsea system

The main objective in this PhD project is to develop a suitable new framework for: (1) formulating RAMS requirements in an early design phase, covering the system to component level, and (2) for RAMS verification, including a RAMS evaluation model, which is tailor-made for evaluating and selecting the most optimal system design alternative under uncertainty. The main focus of this PhD project is to incorporate reliability and availability in the early design phase of subsea systems, where systems may be for subsea processing purposes or for detecting and mitigating the effects of hazardous events. Availability incorporates effects of maintenance and operation strategy, and safety may relate to measures for reliability as well as availability in cases where the system functions are safety-critical. So, the term ‘RAMS’ is sometimes replaced by reliability and availability, without losing the aspects of maintenance and safety.


Geir Ove Strand

Well Safety:

Risk Control in the Drilling Phase of

Offshore Wells

The main objective of the thesis is to develop a systematic approach for risk assessment of offshore wells in the drilling phase. The approach, denoted DPRA in thesis, could be used as an aid to risk informed decision-making in relation to offshore well drilling (and intervention) operations. The focus of DPRA is on procedures and methods for the quantification of probabilities or frequencies associated with well releases and blowouts.

2014-2016 (17)

HyungJu Kim (postdoc)

Develop a new control and safety philosophy for operation of subsea systems


The main objective in this project is to develop a new control and safety philosophy for subsea systems. The new philosophy aims to overcome some of the challenges of implementing such systems with basis in standards developed for topside conditions, and to ensure that the subsea safety risks and subsea operating environment are fully captured



Master students supervised

  • Ole-Henrik Dag Olsen (2016): Implementing IEC 61508 for Qualification of Safety-Instrumented Systems for Submergible Tube Bridges
  • Lars Hauff (2016): Optimization of Design, Safety and Cost of Pressure Protection Systems
  • Mohammad Amin Ghanooni (2015): Spurious activations of safety-instrumented systems
  • Godziuk, Anna Magdalena (2015): A proposal for a RAMS engineering process for blowout preventers
  • Mari Krogness Fornes (2015): Risk assessment of strait crossing bridges
  • Caroline Dutard (2015): Management of SIL performance of safety-instrumented systems
  • Zeba Gul (2015): Application software development for safety instrumented systems
  • Ingrid Zafira Harvinia (2015): Risk Assessment and SIL Allocation of Safety Instrumented Functions for Open Water Workover System
  • Eleojo Samuel Ocheni (2015): Impact of partial and imperfect testing on reliability assessment of safety instrumented systems - Possible approaches for inclusion of its effects in reliability assessments
  • Yining Dong (2015): Methodology for Identification of Dangerous Combinations of Output States of SIS (co-supervisor)
  • Can Li (2015): Safety Instrumented Systems on Older Facilities
  • Mbah Rowland (2014): Using reliability growth testing to reveal systematic faults in safety-instrumented systems (co-supervisor)
  • Åsa Snilstveit Hoem (2014): Use of field experience to improve the treatment of CCFs in reliability assessment of safety instrumented systems
  • Jon Mikkel Haugen (2014) Reliability Allocation and Assessment of Safety-Instrumented Systems (co-supervisor)
  • Martin Brataas (2014): Management of the integrity of safety instrumented systems
  • Wilmer Alberto Aguilar Marinez (2014): Methods for determining PFD/SIL for workover control systems with short test-intervals and imperfect testing
  • Tormod Danielsen Udnæs (2012): Reliability and Availability Assessment of Topologies for Subsea Control Systems
  • Remi Pinker (2012): Improved methods for reliability assessments of safety critical systems: An application example for BOP systems
  • Sondre Klakegg (2012): Improved methods for reliability assessments of safety-critical systems: An application example for BOP systems
  • Ishita Dash (2012): Provision of Reliability Data for New Technology Equipment in Subsea Production Systems
  • Henrik Finnema Moen (2012): Reliability Assessment of Safety Instrumented Systems: An Application Example For A Ballasting System 
  • Kristian Amundsen (2012):  A method for combining well safety risk and businessimpact risk
  • Ingunn Kristensen (2011):Balancing production availability and safety in subsea production systems
  • Yangjiao Liao ( 2011): SIL Follow-Up in the Operational Phase of Safety Instrumented System
  • Cuixin Shi (2011): Validation of non-compliant products for use with safety instrumented systems
  • Astrid Folkvord Janbu (2009): Treatment of Uncertainties in Reliability Assessment of Safety Instrumented Systems (co-supervisor)

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