Earthquake Disaster Risk Reduction in Iran: Lessons and ‘‘Lessons Learned’’ from Three Large EarthquakeDisasters—Tabas 1978, Rudbar 1990, and Bam 2003

This article addresses three large earthquake disasters in Iran: Tabas in 1978, Rudbar in 1990, and Bam in 2003. Lessons and "Lessons Learned" from these three earthquake disasters were investigated together with their contributions over time towards earthquake disaster risk reduction in Iran. Many lessons from 1978 Tabas, 1990 Rudbar, and 2003 Bam did not become "Lessons Learned" and they were identified again within the dramatic context of other earthquake disasters in various places of Iran. Both lessons and "Lessons Learned" from Tabas, Rudbar, Bam, and other earthquake disasters in Iran require a sustainable long-term framework-an earthquake culture.This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://​creativecommons.​org/​licenses/​by/​4.​0/​), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were mad

Learning from non-failure of Onagawa nuclear power station: an accident investigation over its life cycle

This article investigates the successful survival of the Onagawa nuclear power station during and after the 2011 Tohoku earthquake and tsunami. As a research method, a system approach investigation and analysis— CAST (Causal Analysis based on Systems Theoretic Accident Model and Processes)—is applied over the life cycle of Onagawa. The main aim of this study is to identify how seismic and tsunami disaster risk reduction was implemented in different stages of the Onagawa nuclear power station’s life cycle. It is found that three safety cultures were built and developed over its life cycle: a nuclear safety culture, an earthquake safety culture, and a tsunami safety culture. These three safety cultures played important roles in the non-failure and success of Onagawa in 2011. Furthermore, the operator of Onagawa, Tohoku EPCo has a dynamic approach and a strong leadership towards earthquake and tsunami risk mitigation in all life cycle stages; flexibility and voluntary safety actions have been in place at Tohoku EPCo and Onagawa . Nevertheless, the 2011 events strongly influenced the decision to decommission the Onagawa Unit 1 early, brought to attention the length of the decommissioning process (which will surpass the operation stage), the high costs involved, and tremendous challenges linked to the permanent storage of radioactive waste. The successful survival of the Onagawa emphasizes that in order to achieve energy security through the nuclear energy in Japan and elsewhere in the world, safety always needs to come first. Furthermore, it supports dynamic learning not only for the nuclear industry, but also for the oil and gas and maritime industries; particularly, those situated in earthquake and tsunami risk areas

Learning from failures: Accidents of marine structures on Norwegian continental shelf over 40 years time period

This paper investigates accidents, major accidents and disasters which occurred on the Norwegian Continental Shelf (NCS) over a period of more than 40 years time (1972-2013). An accident investigation based on the system life-cycle was applied on the data provided by the World Offshore Accident Database (WOAD) where the operation (in-service) stage of the lifecycle was found to be the stage with 96% and the installation stage with 4% of accident occurrences. The marine operations linked to both installation and the operation (in-service) stages are identified to be where 13% of accidents had occurred. In terms of structural types, jackets and semi-submersibles are identified with the highest number of accidents, while the highest rate of accidents per marine structure type is linked to the concrete structures where in average 5.5 accidents per each concrete structures were recorded. 1980 was the year with the highest number of fatalities on NCS within 40 years time span with the occurrence of Alexander L. Kielland disaster. There has been a reduction of number of fatalities over the years, but injuries had always been present. It was found that possible correlations can be established among occurrence of accidents and environmental loads for some months. The results and discussions contributes to learning from the 40 years accidents on the NCS with the aim of risk reduction in operation of marine structures. The predictive and preventive maintenance strategy and condition monitoring during operation (in-service) stage for each individual marine structure is promoted. However, the uncertainty is still present and risk can never be reduced to zero.

On Disaster Risk Reduction in Norwegian Oil and Gas Industry Through Life-Cycle Perspective

This paper presents the risk reduction in Norwegian oil & gas industry over the time (1975-2016) through a life cycle perspective analysis with the aim to identify the critical stage(s) both in terms of accident occurrence and cause of the accident. Fifteen accidents, major accidents and disasters for example Ecofisk 2/4 Alpha 1975, Alexander L. Kielland 1980, Songa Endurance 2016 were studied. Cases from outside of the Norwegian offshore field - the Piper Alpha 1988, the Bourbon Dolphin 2007, and the Deep Water Horizon 2010 - were also considered as comparison. For each accident and through the life cycle analysis, the occurrence stage of the accident and its main technical causes were identified and compared. It was found that a high risk is concentrated in the Operation (In-Service) stage and associated Marine Operations. Furthermore, it was observed that a high number of accidents in oil and gas industry are associated with mobile structures. All the investigated accidents have acted as powerful reminders to the oil and gas industry that a continuous improvement of risk management and reduction of uncertainty are of paramount importance in order to ensure safe operations and risk reduction for accidents, major accidents and disasters. However, a reactive learning from major accidents and disasters needs to be supported by a proactive learning and development of a dynamic risk culture in the oil and gas industry

On Risk of Digital Twin Implementation in Marine Industry: Learning from Aviation Industry

This paper presents some aspects of the risk and challenges associated with digital twin implementation in the marine industry by learning from the aviation industry where the digital twin is more widely employed. The digital twin applications in aviation and marine industries are presented and the main steps of developing a digital twin are discussed. The three main steps of sensors (measurements), model, and data analysis are identified and used in the study. The lessons from two recent accidents in the aviation industry (Boeing 737 MAX crashes in Indonesia and Ethiopia in 2018 and 2019) are studied in details and discussed. It was found that the sensor reliability, model failure and wrong decisions as the output of the data processing are among the risks associated with digital twin implementations. In particular, from the case study accidents, it was found that the digital twin may not be able to represent all the possible scenarios which a system may experience in its life time. The digital twin presents many advantages, however the implementation of the digital twin is associated with risk and high uncertainties, even in the industries like the aviation industry, where the digital twin is well established and at a higher advanced level than in the marine industry

Team and Research Based Learning Methods Applied in Multidisciplinary Marine Engineering Education

This paper presents an integrated team-based, and research-based learning approach utilized in lecturing multidisciplinary marine engineering courses. The approach is exemplified during one month Ocean Engineering Summer School program at the Marine Technology Department, Norwegian University of Science and Technology, Trondheim, Norway, for a group of students from different universities across Japan. Students with engineering background, but not necessarily marine, joined to learn fundamentals of marine technology, including structure, hydrodynamic and dynamic response analysis presented through offshore structures, subsea equipment, pipelines, offshore wind energy, marine machinery and marine operations. The marine industry has moved toward digitalization and this aspect was an important part of the curriculum, both in terms of tools and methods lectured and employed for each discipline and industrial examples for instance simulation-based design and operation demonstration. An integrated team-based (TBL) and research-based (RBL) learning approach was employed. The outcomes and positive feedback from students and the Nippon Foundation Ocean Innovation Consortium demonstrated that RBL integrated with TBL shifts the students from being "audiences" in the classroom to "active participants". The program was enriched with a rich cultural program which was found very helpful in learning process by the students. Moreover, the industrial insights added value for implementing the TBL and RBL. The marine engineering development and needs to adopt engineering education for modern marine industry, call for innovative and adaptive educational methods and this article presents some of the innovative methods which can be employed