The terrorist attack on the Abqaiq oil plant in Saudi Arabia on September 14, 2019 attracted global attention to the significant role of safety and security in the sustainable oil and gas supply chain and the vulnerability of supply infrastructures subject to intentional and unintentional damages. Different from other oil and gas supply infrastructures, oil and gas pipelines may be more vulnerable to accidental, natural and intentional threats due to their widespread distribution. Therefore a systematic and thorough review is carried out to investigate safety and security of oil and gas pipelines based on bibliometric analysis. First, a total of 598 publications between 1970 and 2019 related to safety and security of oil and natural gas pipelines was retrieved and refined from the database of Web of Science (WoS). The 598 publications are analyzed by the bibliometric software VOSviewer to obtain the temporal and regional distribution of publications, to identify “productive institutions” and “productive authors”, and create the cooperation networks between institutions and authors. Besides, the evolution of research topics and research methods are identified based on keywords and bibliographic analysis. Moreover, the main research topics and research methods are analyzed to obtain insight into the research evolutions and trends. Risk assessment, leakage, and corrosion are the main topics while QRA, fuzzy theory and the Bayesian network are the most frequently used research methods. To further improve the sustainability of oil and gas pipelines, this study provides and discusses future research needs such as pipeline security, environmental sustainability, pipeline system resilience. According to these results, the research on risk assessment based on Bayesian network and consequence analysis using CFD may increase in the future. Besides, more research and guidelines on pipeline security, resilience, and environmental impacts to better protect pipelines, are expected.

It has been increasingly recognized that safety leadership can effectively contribute to organizational safety, so a lot of attention is paid to safety leadership studies in recent years. In order to understand the current status and development trends of research in safety leadership field around the world, a science mapping analysis of scientific publications on safety leadership was conducted via the Web of Science Core Collection database. Overall, a total of 238 documents on safety leadership were collected, involving 622 authors, 140 journals, 40 countries, and 388 institutes between 1999 and 2018. The studies associated with safety leadership have been growing from 3 in 1999 to 126 in 2018. The USA, UK, and Canada play important roles in safety leadership research, while further international cooperation should be strengthened in the future. Kelloway, Conchie, and Flin are the most active researchers in this field. With respect to the main sources of safety leadership publications, the Safety Science journal ranks first with 23 articles, followed by the International Journal of Psychology, and the Journal of Nursing Management. In addition, the University of Aberdeen (UK) is the most productive research institute with respect to safety leadership research. In terms of the frequency of keywords, safety performance, transformational leadership, member exchange, transactional leadership, and safety climate are the hottest topics in safety leadership research. The primary themes in safety leadership research concentrate on empiric supports of leadership on safety performance, various leadership styles applied in safety, specific applications of safety leadership in health care, and the correlation between safety leadership and safety climate. Additionally, there are new research topics appearing in recent three years, associated with psychological safety, authentic leadership, ethical leadership, charismatic leadership, empowering leadership.

In recent years, the frequent occurrence of bus fire accidents has caused public concern in China, impacting the safe operation of urban transportation seriously. A cross-sectional survey was conducted to evaluate the safety & security (S&S) level of attitude and knowledge in relation to bus fires among residents in Fuzhou city, Fujian Province. 200 passengers from 6 bus terminals and 10 bus stations were selected as study subject. The results show that the S&S attitude and knowledge differ by gender, age, education background, occupation, and the frequency of taking a bus. The educational level significantly influences the S&S attitude and knowledge of the respondents, showing a positive correlation. Similarly, the passengers who take a bus frequently are more likely to display higher S&S attitude and knowledge scores. The participants working in governments and serving as managers in companies scored higher in attitude than the staff and students. A minority of respondents are concerned with bus fire S&S in their daily lives. Many passengers pay not much attention to the safety instructions when taking a bus. Some suggestions are given to improve S&S situation of bus transportation. The research results can lay the foundation for local governments, bus transport operators, and relevant safety organizations to establish a series of safety policies or regulations with respect to bus fires.