Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 1998. / Includes bibliographical references.

This research is focused on the acquisition of electronic safety equipment for mines and was conducted within the design science research (DSR) framework. Design science research ensured a directed research process was followed. The existing acquisition process and risk management methods used in the South African mining environment were analysed by means of observations, a case study, technical documentation and literature. It was evident from this analysis that a discontinuity existed between the acquisition and operations phases in terms of the management of safety risk in the acquisition of electronic safety equipment when viewed from a full life cycle perspective. This discontinuity could be addressed by defining a risk perspective on acquisition, as such a perspective would draw together engineering and mining operations in terms of safety and productivity. Research topics in this literature study include risk definition and terminologies, risk management frameworks, risk analysis methodologies and characterization, existing risk assessment tools and techniques, human error and operational modelling, and systems engineering. A literature study showed that similar challenges existed in other disciplines, with proposed solutions, but the discontinuity between the acquisition and operational phases had not been addressed. A specific approach of this research was to derive individualised research challenges aligned with the main research challenge, and then to translate each research challenge into one or more research solutions. The discontinuity between the acquisition and operational phases (engineering and mining) is addressed by an activity-based risk (ABR) acquisition process. The activity-based risk method forms part of preliminary design of a systems engineering life cycle, as this phase is of critical importance to the ABR acquisition process. The focus of the ABR acquisition process is to find the functional definition and configuration of safety equipment that addresses both safety and productivity when taking into account human performance variability. In doing so, a balance between productivity and safety is found in a relativistic sense. The effectiveness of the ABR process was verified in a real-world case study, where a safety system was analysed, fully developed, and evaluated in an operational environment to address safety risks associated with winch scraper operations. Characteristics of the ABR process were demonstrated in this case study, which also showed in detail how to develop risk- and cost-reduced equipment from a risk perspective. Feedback obtained from evaluation of the resulting safety equipment in operation was found to be consistent with the ABR model simulation results, and assisted with the validation of the winch signalling system operational model. Details of the ABR acquisition process are presented for functional analyses, simulation model construction, human performance variability modelling, risk-related performance measurement, simulation model evaluation, trade-off analyses, and physical realisation of winch signalling system artefacts. Finally, the advantages of using an ABR acquisition process are shown to underline the effectiveness of using a risk perspective for the acquisition of electronic safety equipment on South African mines. / PhD (Development and Management Engineering), North-West University, Potchefstroom Campus, 2015

This research is focused on the acquisition of electronic safety equipment for mines and was conducted within the design science research (DSR) framework. Design science research ensured a directed research process was followed. The existing acquisition process and risk management methods used in the South African mining environment were analysed by means of observations, a case study, technical documentation and literature. It was evident from this analysis that a discontinuity existed between the acquisition and operations phases in terms of the management of safety risk in the acquisition of electronic safety equipment when viewed from a full life cycle perspective. This discontinuity could be addressed by defining a risk perspective on acquisition, as such a perspective would draw together engineering and mining operations in terms of safety and productivity. Research topics in this literature study include risk definition and terminologies, risk management frameworks, risk analysis methodologies and characterization, existing risk assessment tools and techniques, human error and operational modelling, and systems engineering. A literature study showed that similar challenges existed in other disciplines, with proposed solutions, but the discontinuity between the acquisition and operational phases had not been addressed. A specific approach of this research was to derive individualised research challenges aligned with the main research challenge, and then to translate each research challenge into one or more research solutions. The discontinuity between the acquisition and operational phases (engineering and mining) is addressed by an activity-based risk (ABR) acquisition process. The activity-based risk method forms part of preliminary design of a systems engineering life cycle, as this phase is of critical importance to the ABR acquisition process. The focus of the ABR acquisition process is to find the functional definition and configuration of safety equipment that addresses both safety and productivity when taking into account human performance variability. In doing so, a balance between productivity and safety is found in a relativistic sense. The effectiveness of the ABR process was verified in a real-world case study, where a safety system was analysed, fully developed, and evaluated in an operational environment to address safety risks associated with winch scraper operations. Characteristics of the ABR process were demonstrated in this case study, which also showed in detail how to develop risk- and cost-reduced equipment from a risk perspective. Feedback obtained from evaluation of the resulting safety equipment in operation was found to be consistent with the ABR model simulation results, and assisted with the validation of the winch signalling system operational model. Details of the ABR acquisition process are presented for functional analyses, simulation model construction, human performance variability modelling, risk-related performance measurement, simulation model evaluation, trade-off analyses, and physical realisation of winch signalling system artefacts. Finally, the advantages of using an ABR acquisition process are shown to underline the effectiveness of using a risk perspective for the acquisition of electronic safety equipment on South African mines. / PhD (Development and Management Engineering), North-West University, Potchefstroom Campus, 2015

The aim of this research project is to investigate and implement an effective equipment safety compliance system within the Queensland electrical entity ENERGEX and to influence Australian testing practices. The implementation of this work has facilitated the development of an Asset Management model for safety equipment and instrumentation to achieve compliance and effective management of $20M of assets. The work involved six projects to assist in the development of department ENERGEX - RedEquip compliance system. * Development of an Asset Management System to record test results, frequency, test method. * Redevelopment of Queensland Code for safety Equipment between ENERGEX and Ergon Energy * Portable Earthing Testing requirements and techniques * HV fibreglass stick testing to IEC 60855 and specific ENERGEX and Powerlink test criteria. * EWP testing to comply to AS 1418.10 - 2004 Cranes Elevating work platforms which have dramatically changed the EWP test methods. * Pole Leakage detector requirements The work has resulted in ENERGEX -RedEquip becoming an industry leader in safety equipment compliance testing. The thesis presents many findings based on the projects undertaken. The findings have resulted in major changes to testing frequencies of equipment and proposed new test methods. The major theme to this work was Safety and Testing, to align the two and provide a system that would satisfy the Queensland Electrical Safety Act 2002. The thesis is based on the individual work undertaken by the author to support this overall theme. The Asset management and Inspection Testing document project are fundamental in establishing the systems to manage safety compliance for ENERGEX. The other projects were a selection of individual equipment issues to demonstrate the complexity of equipment testing that need to be resolved.

No description available.

Fall från höga höjder ombord på fartyg inträffar trots att säkerhetsutrustning används. Syftet med detta arbetet var att ta reda på vilka faktorer som påverkar säkerheten på höga höjder ombord på fartyg. Studien genomfördes med hjälp av intervjuer av ombordanställda däcksbefäl och matroser, fackförening samt inspektörer. Slutsatserna var att de faktorer som påverkar fallolyckor grovt kan sorteras in i användning av säkerhetsutrustning, attityder till säkerhetsutrustning, lämplighet hos personal, regelverk och utbildning. Det framkom att det är möjligt att säkerhetsutrustningen inte används i alla de fall då den har rapporterats ha använts samt, att om den använts, inte nödvändigtvis använts på rätt sätt. Det visade sig också vara viktigt att befälen föregår med gott exempel och sätter en tydlig standard för att skapa en miljö ombord där säkerhetsutrustning används samt används på rätt sätt. / Falling from heights on ships occurs even though safety equipment is used. The intent of this study was to find out what factors affect the safety on heights onboard ships. The study was conducted by interviews with ship’s officers, able seamen, a professional union and inspectors. The conclusion showed that there are some factors affecting the accidents where someone falls from a height onboard. The factors were usage, attitudes to the safety equipment, suitability, regulations and education. The findings indicated that safety equipment might not always have been used as reported, and that if it was used it might not have been used correctly. It appeared that it is important for the officers onboard to lead by example and to set an evident standard onboard to create an environment where safety equipment is used and used in a correct way.

An analysis of the circumstances preceding severe occupational injuries as a consequence of impacts has shown that well-known risks are of great importance in 75 per cent of the cases. This indicates that the subjective cause "neglect" is common. The negligence is distributed to the same extent among employers as among employees. Negligence by the employers was defined as obvious violations according to the Law of Workers’ Safety or Regulations issued by The National Board of Occupational Health and Safety. Negligence by employees was defined as actions against specific orders or common sense. As a result of this study additional research concerning the execution of Criminal Law in occupational accidents has been carried out. The law has also been changed regarding prosecution in cases of breaking the Law on the working environment.In situations where elimination of risks is not possible it is a most important task to minimize the risk of severe injury. In four of the studies there are examples of minimization of injuries by increased usage of personal safety equipment, improved rescue and by modifying the environment. If personal safety equipment could be used in all relevant situations the incidence of severe injuries at the place of work would decrease by more than 25 per cent. However, the crucial insufficiencies as to the specifications of personal protective equipment must be emphasized. This should stimulate the development of environmental changes, thus preventing the build-up and release of potentially dangerous energy. Working alone and late rescue for other reasons, together with other circumstances following the injury made the injuries worse in a little more than 10 per cent of the cases.In the studies concerning injuries as the result of impacts in trucks and buses it is shown that a lot of trucks turn over and that a large number of injuries occur as a result of deformation of the cabins. A safety belt would offer good protection against injury in about half of the cases. Safety in trucks and buses could be improved by the introduction of a deformative zone in front of the occupants. Front designs of cab-over vehicles should be changed and the use of seat belts in trucks and buses should be made compulsory. Passive seat belts, knee bars and air bags are interesting alternatives and additions to manual seat belts for commercial drivers. / <p>Diss. (sammanfattning) Umeå : Umeå universitet, 1989, härtill 5 uppsatser</p> / digitalisering@umu

The study that is described in this thesis deals with stope support design from a rockmass stiffness approach. Three models were developed and combined into a single one in the third part of the study in an attempt to describe and quantify the stop support and rockmass interaction. The first model describes stope support with all the factors having an influence on its performance, where this is referred to as the capacity of the stope support. The second model describes rockmass behaviour and is referred to as the rockmass demand. These two models are represented on a common load-deformation graph during the third part of the study. Here the demand of the rockmass is compared to the capacity of the stope support as a whole. In contrast to previous design attempts, both the demand and the capacity for any given situation are considered as variables. The demand varies according to the position relative to the abutments and the capacity varies according to the state of deformation of the support. Each combination of mining configuration, rock type and support type results in a unique base set within which variation is allowed according to position. This is achieved by: (a) comparing the energy released by the rockmass to the energy absorbed by the support system for a given deformation interval; and (b) comparing the rockmass stiffness to that of the support system at any given point of deformation. The methodology is tested by two case studies on Beatrix Gold Mine. In the first study the condition of unstable failure of the support was evaluated where the support failed and the stope collapsed in a relatively short span of time. This is referred to as unstable failure of the stope. The underground observations were confirmed by the outcome of this study. The energy released by the rockmass, that is rockmass demand, exceeded the capacity of the stope support after a given stage of mining. The absolute value of the rockmass stiffness was also less than the absolute value of the load-deformation curve of the stope support for the same mining interval. During the second case study some elements of the stope support failed while the excavation remained open and stable. Underground observations again confirmed the model during this study. Here the Pencil Props failed some distance from the stope face. In this case the absolute value of the rockmass stiffness was less than the magnitude of the negative load-deformation curve of the Pencil Props, while the Matpacks have a positive load-deformation behaviour throughout the deformation process. In the latter case the total energy generated by the rockmass never exceeded the capacity of the permanent stop support. This is referred to as stable failure of the stope support. The study proves that it is possible to evaluate stope support even when a combination of different supports is used as permanent support. The latter is achieved by adding the capacities of the stope support as deformation takes place and comparing that to the rockmass demand for the same mining steps. / Thesis (PhD(Mining Engineering))--University of Pretoria, 2006. / Mining Engineering / unrestricted

Due to global warming our frozen lakes are becoming thinner, unpredictable and dangerous. We have already started noticing the effects of this. In recent years we have seen a steady increase in fatal ice accidents. An often-overlooked aspect within safety is our attitude towards protective gear. Through design and branding, this project explores a variety of solutions in response to the factual increase of ice- related drowning accidents in Sweden. VAK is a hypothetical brand for those who are prepared and ready to adapt to a changing environment, shaped and inspired by the raw and fickle nature of ice. Within VAK’s products several different safety aspects are touched upon, such as increased flotation, better grip and impact protection.

The diploma thesis is focused on district heat supply, heat sources, machinery and safety equipment of boiler rooms. The main goal of the thesis is to modernize parts of the heat sources with the respective boiler room equipment in accordance with the latest available technology. The generated thermal energy is used for heating or hot water production for residential and non-residential buildings in the vicinity of the boiler room. In the theoretical part, the thesis focuses in more detail on boiler rooms, specifically on heat energy sources, machinery and safety equipment of boiler rooms, system ventilation and combustion exhaust. The findings are applied in the design of the new boiler room layout. It is followed by a detailed description of the current state of the boiler room and heat networks. An essential part of the work is the assessment of layout of the current heat sources and the creation of a new design for the replacement of insufficient sources and related equipment. The last goal is an economic overview of the designed project solution.