Developments in the Safety Science Domain and in Safety Management From the 1970s Till the 1979 Near Disaster at Three Mile Island

Objective: What has been the influence of general management schools and safety research into causes of accidents and disasters on managing safety from 1970 till 1979? Method: The study was limited to original articles and documents, written in English or Dutch from the period under concern. For the Netherlands, the professional journal De Veiligheid (Safety) has been consulted. Results and conclusions: Dominant management approaches started with 1) the classical management starting from the 19th century, with scientific management from the start of the 20st century as a main component. During the interwar period 2) behavioural management started, based on behaviourism, followed by 3) quantitative management from the Second World War onwards. After the war 4) modern management became important. A company was seen as an open system, interacting with an external environment with external stakeholders. These schools management were not exclusive, but have existed in the period together. Early 20th century, the U.S. 'Safety First' movement was the starting point of this knowledge development on managing safety, with cost reduction and production efficiency as key drivers. Psychological models and metaphors explained accidents from ‘unsafe acts’. And safety was managed with training and selection of reckless workers, all in line with scientific management. Supported by behavioural management, this approach remained dominant for many years, even long after World War II. Influenced by quantitative management, potential and actual disasters after the war led to two approaches; loss prevention (up-scaling process industry) and reliability engineering (inherently dangerous processes in the aerospace and nuclear industries). The distinction between process safety and occupational safety became clear after the war, and the two developed into relatively independent domains. In occupational safety in the 1970s human errors thought to be symptoms of mismanagement. The term ‘safety management’ was introduced in scientific safety literature as well as concepts as loose, and tightly coupled processes, organizational culture, incubation of a disaster and mechanisms blinding organizations for portents of disaster scenarios. Loss prevention remained technically oriented. Till 1979 there was no clear relation with safety management. Reliability engineering, based on systems theory did have that relation with the MORT technique as a management audit. The Netherlands mainly followed Anglo-Saxon developments. Late 1970s, following international safety symposia in The Hague and Delft, independent research started in The Netherland

Occupational characteristics of cases with asbestos-related diseases in The Netherlands

OBJECTIVE: To describe the occupational background of cases with an asbestos-related disease and to present overall mesothelioma risks across industries with historical exposure to asbestos. METHODS: For the period 1990-2000, cases were collected from records held by two law firms. Information on jobs held, previous employers, activities performed and specific products used were obtained from patients themselves or next of kin. Branches of industry and occupations were coded and the likelihood of asbestos exposure was assessed. For each branch of industry, the overall risk of mesothelioma was calculated from the ratio of the observed number of mesothelioma cases and the cumulative population-at-risk in the period 1947-1960. In order to compare mesothelioma risks across different industries, risk ratios were calculated for the primary asbestos industry and asbestos user industries relative to all other branches of industry. RESULTS: In total, 710 mesotheliomas and 86 asbestosis cases were available. The average latency period was approximately 40 yr and the average duration of exposure was 22 yr. Ship building and maintenance contributed the largest number of cases (27%), followed by the construction industry (14%), the insulation industry (12%), and the navy and army, primarily related to ship building and maintenance (5%). In the insulation industry, the overall risk of mesothelioma was 5 out of 100 workers, and in the ship building industry, 1 out of 100 workers. The construction industry had an overall risk comparable with many other asbestos-using industries (7 per 10,000 workers), but due to its size claimed many mesothelioma cases. CONCLUSION: The majority of cases with asbestos-related diseases had experienced their first asbestos exposure prior to 1960. For cases with first asbestos exposure after 1960, a shift was observed from the primary asbestos industry towards asbestos-using industries, such as construction, petroleum refining, and train building and maintenance. Due to the long latency period, asbestos exposure from 1960 to 1980 will cause a considerable number of mesothelioma cases in the next two decades

Taal en veiligheid: een groeiend nieuw werkveld [Language and security: a growing new field of work]

Language issues cause safety problems at work. This study presents an inventory of scientific studies in the economic sectors and assesses which level of risk management they address. Complications with language have not been investigated comprehensively across sectors as a causal factor in accidents. This leaves language related risks partially unknown, hence uncontrolled. There is lack of insight in both the nature and magnitude of this danger in healthcare, agricultural, transport and construction sectors. Healthcare is especially troublesome since patients might be victims of language related accidents due to their presence and interaction. The same may occur to members of the public in traffic accidents. In transport and agricultural sectors safety measures were taken without any analysis of language related risks. This study shows that scientific research on ‘language and safety’ is in its infancy and requires priority on the research agenda

Introduction of the concept of risk within safety science in The Netherlands focussing on the years 1970–1990

Serious incidents in the 1970s and continuous growth of factories producing and/or using hazardous substances formed the basis of a quantitative approach to risk. While discussions of risk were conducted in all industrialised countries they were particularly important in The Netherlands due to space limitations and short distances between industrial plants and residential areas. This article is part of a series covering the history of the safety science discipline (Swuste et al., 2015; Van Gulijk et al., 2009; Swuste et al., 2010). The concept risk entered the Dutch safety domain before the 1970s in relatively isolated case studies and in managing flood defences in The Netherlands. Since the 1970s these case studies paved the way for the development of mathematical models for quantitative risk analysis that were based on experience from nuclear power plants, the process industries and reliability engineering from operations research. ‘External safety’ was a focal point for these early developments in the process industries: adverse effects of dangerous goods outside the factory’s property boundaries. The models were documented in standardised textbooks for risk analysis in The Netherlands, the so-called ‘coloured books’. These works contributed to the development of the Seveso Directive. For internal safety (taking place within property boundaries) semi-quantitative approaches were developed simultaneously. The models for quantitative risk analysis were deemed reliable, but the acceptability of a quantified risk was another matter. Making decisions on risk relates to complex societal issues, such as ethics, stakeholder perception of risks, stakeholder involvement, and politics, all of which made the decision making process far from straightforward. With the introduction of the abstract concept of risk in the Dutch safety science domain, the question of risk perception became important in Dutch safety research. The concept risk and methods for quantitative risk analysis first entered into Dutch law in environmental risk regulations. It took a while for risk to be accepted by occupational safety experts, but just before the turn of the century ‘occupational risk inventory and evaluations’ or RI&E methods were introduced into Dutch occupational safety legislation. This finalised the paradigm shift to risk-based safetydecision making in the Dutch safety science domain. While methods for quantifying risk are now widely applied and accepted, the proper use of risk perception and risk in the political decision process are still being debated

Safety management systems from Three Mile Island to Piper Alpha, a review in English and Dutch literature for the period 1979 to 1988

Objective: Which general management and safety models and theories trends influenced safety management in the period between Three Mile Island in 1979 and Piper Alpha in 1988? In which context did these developments took place and how did this influence Dutch safety domain? Method: The literature study was limited to original English and Dutch documents and articles in scientific and professional literature during the period studied. Results and conclusions: Models and theories of human errors, explaining occupational accidents were still popular in the professional literature. A system approach was introduced into mainstream safety science, starting in process safety, and subsequently moving into occupational safety. Accidents were thought to be the result of disturbances in a dynamic system, a socio-technical system, rather than just human error. Human errors were also perceived differently: they were no longer faults of people, but consequences of suboptimal interactions during process disturbances. In this period quality of safety research increased substantially, also in the Netherlands. Major disasters in the 1980s generated knowledge on process safety, and soon process safety outplaced developments in occupational safety, which had been leading before. Theories and models in this period had advanced sufficiently to explain disasters, but were still unable to predict probabilities and scenarios of future disasters. In the 1980s ‘latent errors’ appeared in safety literature, and in The Netherlands the concept of ‘impossible accidents' appeared. Safety management was strongly influenced by developments in quality management

Quality assessment of postgraduate safety education programs, current developments with examples of ten (post)graduate safety courses in Europe

Professionalization of safety is gaining some interest in international safety literature, including (post)graduate training and education of safety experts. Different from research, there are hardly any publications and discussions on the quality of (post) graduate safety education in the academic safety literature. This article starts with a short historical picture of safety education. After this picture, a description of the ten (post) graduate safety courses involved is presented with a special reference to the assessment of the quality of these courses. It shows that an internal evaluation of quality, like reactions from trainees, and results from examinations, and tests are presently the main quality indicators. Discussions on how quality assessment can be performed has led to an overview of literature on educational objectives and educational models, and possible options for this assessment. The article concludes that the transfer of safety knowledge and skills to companies and organizations is a highly desirable elaboration of the quality concept. But it is also clear that traditional safety indicators can provide no, or only unreliable, information about the degree of this transfer. An overview of possible minor and major accident scenarios of the company or organisation concerned might be a better option, combined with the activities of the trainee to influence and prevent activation of these scenarios