A Model Driven Approach for Early Assessment of Defense in Depth Capabilities of Complex Sociotechnical Systems
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Authors
Papakonstantinou, Nikolaos
Tommila, Teemu
O’Halloran, Bryan
Alanen, Jarmo
Van Bossuyt, Douglas L.
Subjects
Defense industry
Design
Complex systems
Safety
Computer software
Cooling systems
Delays
Human factors
Mining
Nuclear power
Nuclear power stations
Risk
Spent nuclear fuels
Topology
Design
Complex systems
Safety
Computer software
Cooling systems
Delays
Human factors
Mining
Nuclear power
Nuclear power stations
Risk
Spent nuclear fuels
Topology
Advisors
Date of Issue
2017
Date
2017
Publisher
ASME
Language
Abstract
Defense in Depth (DiD) is a key design principle helping to improve the safety of complex systems in domains like nuclear power, oil and gas, and mining. DiD affects the basic design of the system because it contains requirements for isolation, diversity and safety divisions. If the DiD assessment happens late in the design process, there is a risk of costly redesign and project delays. To avoid this issue, this paper refines a set of early DiD assessment design rules and proposes a model-driven methodology for early assessment of the implementation of the DiD capabilities of a complex system design. The topology of the different design aspects of the system under study (mechanical, electrical, human factors, and others) and the dependencies between system elements are captured in a High Level Interdisciplinary Model (HLIM) that also holds DiD specific attributes. The resulting system model is assessed against the proposed set of DiD rules and requirements, and then it can be improved according to the results. The methodology is applied to a case study of an early nuclear power plant model of a spent fuel pool cooling system. The proof-of-concept software tool developed for early DiD assessment and presented in this paper is able to identify undesired dependencies between system elements of redundant systems, of different defense lines and other DiD related weaknesses. This provides practitioners with insights into potential vulnerabilities in the design and enables focused redesign to address the identified problems early in the design process.
Type
Conference Paper
Description
37th Computers and Information in Engineering Conference
The article of record as published may be found at https://doi.org/10.1115/DETC2017-67257
The article of record as published may be found at https://doi.org/10.1115/DETC2017-67257
Series/Report No
Department
Systems Engineering (SE)
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
This research was funded by the Finnish Research Programme on Nuclear Power Plant Safety 2015-2018 (SAFIR2018, http://safir2018.vtt.fi).
Funder
This research was funded by the Finnish Research Programme on Nuclear Power Plant Safety 2015-2018 (SAFIR2018, http://safir2018.vtt.fi).
Format
10 p.
Citation
Papakonstantinou, Nikolaos, et al. "A Model Driven Approach for Early Assessment of Defense in Depth Capabilities of Complex Sociotechnical Systems." International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Vol. 58110. American Society of Mechanical Engineers, 2017.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.