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Per Richard Hokstad

Senior Research Scientist

Per Richard Hokstad

Senior Research Scientist

Per Richard Hokstad
Phone: 930 01 627
Mobile: 930 01 627
Department: Safety and Mobility Research
Office: Trondheim

publications and responsibilities

Publications

Publication

Interdependencies and Reliability in the Combined ICT and Power System: An overview of current research

http://www.sintef.no/en/publications/publication/?pubid=CRIStin+1447360

The smart grid vision implies extensive use of ICT in the power system, enabling increased flexibility and functionality and thereby meeting future demands and strategic goals. Consequently, power system reliability will increasingly depend on ICT components and systems. While adding functionality, ...

Year 2017
Type Journal article
Publication

Common cause failures in safety-instrumented systems: Using field experience from the petroleum industry

http://www.sintef.no/en/publications/publication/?pubid=CRIStin+1298657

Safety instrumented systems often employ redundancy to enhance reliability, but the intended effect may be reduced when common cause failures are taken into account. It is often assumed that a certain fraction of component failures will occur close in time, due to a shared cause. Unfortunately, few ...

Authors Hauge Stein Hokstad Per Richard Håbrekke Solfrid Lundteigen Mary Ann
Year 2016
Type Journal article
Publication

Common Cause Failures in Safety Instrumented Systems. Beta-factors and equipment specific checklists based on operational experience

http://www.sintef.no/en/publications/publication/?pubid=SINTEF+A26922

This report summarizes the results of a field study of common cause failures (CCFs) in relation to safety instrumented systems (SIS) in the oil and gas industry. Some 12.000 notifications have been reviewed by the project team, involving six different installations. Main deliverables from the study ...

Year 2015
Type Report
Publication

Demand rate and risk reduction for safety instrumented systems

http://www.sintef.no/en/publications/publication/?pubid=CRIStin+1160959

The IEC 61508 standard provides guidance on when to use PFD (Probability of Failure on Demand) and when to use PFH (Dangerous Failure Frequency) as a measure for risk reduction of a Safety Instrumented System (SIS). The standard relates this choice to the demand rate on the SIS, referring to low dem...

Year 2014
Type Journal article
Publication

Methodology for monitoring safety level development in and around Seveso establishments

http://www.sintef.no/en/publications/publication/?pubid=SINTEF+A24323

The report is written on behalf of the Directorate for Civil Protection (DSB) as a contribution to their work as a coordinating authority for the Seveso Regulation in Norway. The purpose of the work has been to identify information that can be used for periodic monitoring and evaluation of safety de...

Publication

Methodology for monitoring safety level development in and around Seveso establishments

http://www.sintef.no/en/publications/publication/?pubid=CRIStin+1268690

The report is written on behalf of the Directorate for Civil Protection (DSB) as a contribution to their work as a coordinating authority for the Seveso Regulation in Norway. The purpose of the work has been to identify information that can be used for periodic monitoring and evaluation of safety de...

Publication

Defining concepts and categorizing interdependencies

http://www.sintef.no/en/publications/publication/?pubid=CRIStin+962649

This chapter defines and discusses important concepts like risk, uncertainty, vulnerability and interdependency. In the literature, these concepts are used in various ways and there exists no common accepted terminology. Therefore, these terms are defined to provide a basis for consistent use throug...

Authors Vatn Jørn Hokstad Per Richard Utne Ingrid Bouwer
Year 2012
Type Conference paper/Book chapter
Publication

Risk and vulnerability analysis of critical infrastructures

http://www.sintef.no/en/publications/publication/?pubid=CRIStin+962650

This chapter defines and discusses important concepts like risk, uncertainty, vulnerability and interdependency. In the literature, these concepts are used in various ways and there exists no common accepted terminology. Therefore, these terms are defined to provide a basis for consistent use throug...

Authors Hokstad Per Richard Utne Ingrid Bouwer Vatn Jørn
Year 2012
Type Conference paper/Book chapter
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