Jiang Tao, P. Yu, Liu Yu, Jiajia Zhang, Shuyong Zhen
{"title":"Design of Monitoring System on QDQ2-1 Type Water Electrolysis Hydrogen Equipment","authors":"Jiang Tao, P. Yu, Liu Yu, Jiajia Zhang, Shuyong Zhen","doi":"10.4236/OJSST.2016.63006","DOIUrl":"https://doi.org/10.4236/OJSST.2016.63006","url":null,"abstract":"In order to solve the deficiencies of the prior detection method on QDQ2-1 type water electrolysis hydrogen equipment, the key state parameters of hydrogen plant, such as hydrogen storage pressure, the operating voltage and the temperature of the tank, can be monitored in remote online by making full use of modern communications technology and data collection [1]. Once the hydrogen plant is abnormal, the alarm can be issued in time. The multi-point real-time automatic monitoring [2] mode can be realized in the hydrogen production process. The safe operation of hydrogen production work can be greatly improved by the advanced monitoring mode.","PeriodicalId":183634,"journal":{"name":"Open Journal of Safety Science and Technology","volume":"259 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114239599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lorenzo Chierici, G. Fiorini, S. Rovere, P. Vestrucci
{"title":"The Evolution of Defense in Depth Approach: A Cross Sectorial Analysis","authors":"Lorenzo Chierici, G. Fiorini, S. Rovere, P. Vestrucci","doi":"10.4236/OJSST.2016.62004","DOIUrl":"https://doi.org/10.4236/OJSST.2016.62004","url":null,"abstract":"The Defense in Depth (DiD) is a classical defensive concept currently applied to a variety of technical fields, including nuclear (where this concept is widely applied) and chemical industry, Information and Communication Technology (ICT), transport, and many others. It deals with slowdown of the progression of an “attack” against a “target” by using multiple and independent levels of protection (or lines of defense), designed to compensate for the failure of one or more defenses, ensuring that the risks are kept acceptable. Concerning the current practices for the DiD implementation and the rationale for its evolution, there is a shared recognition that the reinforcement of DiD is the key to improve the safety of future installations for all types of technologies and industries. Within this context, the results of Probabilistic Safety Assessment (PSA) play a key role in the demonstration of both the robustness of the design and safety, supporting the verification that the DiD principles are correctly implemented. A key issue, still open, is related to the link that must be put in place to provide the DiD probabilistic success criteria through PSA insights. After an analysis of DiD evolution in time and DiD application to different industrial fields, this paper deals with the key issue, still open, relevant to the link that must be put in place to provide the DiD probabilistic success criteria through PSA insights. Practical proposals outlined point out the open questions.","PeriodicalId":183634,"journal":{"name":"Open Journal of Safety Science and Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116484654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Underlying Factors of Occupational Accidents: The Case of Turkey","authors":"Fatih Yılmaz, Selçuk Alp","doi":"10.4236/OJSST.2016.61001","DOIUrl":"https://doi.org/10.4236/OJSST.2016.61001","url":null,"abstract":"An average of 80 thousand occupational accidents occurs each year in Turkey and 1500 workers are lost their lives. In accordance to “policy of preventive approach”, many legal arrangements have been made in Turkey. In this context, weight to issues such as risk assessment and preventive OHS services is given; however, employee training, employee participation, labour inspect, and periodic checks in working areas such as maintenance and audit have not been achieved. The level of implementation of legal arrangements was inadequate. Research was carried out to determine the significance rate of the factors that cause accidents in 5 sectors with the highest number of occupational accidents in Turkey. Questionnaires administered to experienced safety specialists were reviewed by analyzing with the fuzzy TOPSIS method. According to the results, especially in the construction and coal mining sectors and all sectors in general, employee training, employee participation and periodic maintenance in the workplace are more important accident prevention factors than risk assessment and preventive OH & S services. It is seen that for the prevention of accidents, all measures should be implemented by systematic and by a multidisciplinary approach.","PeriodicalId":183634,"journal":{"name":"Open Journal of Safety Science and Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131312541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the Design of Energy Absorbing Crash Buffers for High Speed Roadways","authors":"M. S. Uddin, Jacob Quintel, Grad Zivkovic","doi":"10.4236/OJSST.2016.61002","DOIUrl":"https://doi.org/10.4236/OJSST.2016.61002","url":null,"abstract":"The aim of this paper is to design and analyze cost-effective and high energy absorbing buffer systems for high speed roadways. Unlike conventional crash cushions, the proposed buffer design is based on the assembly of a series of cylindrical hollow tubes (cells) with thorough slots around the cells. The idea is that during the collisions, the kinetic energy of the errant vehicles will be absorbed by the progressive deformation of the cells, hence minimizing damage to the vehicle and allowing a comfortable ride down deceleration of the vehicle’s occupants. As the cell was the fundamental unit of the buffer design, three cells with different geometry were studied to understand the underlying deformation of the individual cells. Nonlinear quasi-static tests using three-dimensional (3D) finite element (FE) simulation and experimental techniques were performed to evaluate the deformation and energy absorption capacity of the cells. Simulation results matched closely with experimental ones with relatively small errors. Based on the experimental results of single cells, a number of potential buffer systems were designed for 80 and 100 km/h speed roadways. Results indicate that the buffers with larger diameter cells are favorable to be used in high speed zones as they reduce the overall size of buffers and contain less number of cells, while being able to absorb the required amount of impact energy. Consequently, they are found to result in a reduced cost associated with materials and fabrication. All the buffer designs were relatively shorter than commercially available buffers used in roadways. In addition, due to their reduced and compact size, the designed buffers can potentially be used in a space limited and hazardous road environment to reduce the vehicle crash with the fixed objects.","PeriodicalId":183634,"journal":{"name":"Open Journal of Safety Science and Technology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129499246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Bahootoroody, M. M. Abaiee, R. Gholamnia, Mohammad Bahoo Torody, Nastaran Hekmat Nejad
{"title":"Developing a Risk-Based Approach for Optimizing Human Reliability Assessment in an Offshore Operation","authors":"A. Bahootoroody, M. M. Abaiee, R. Gholamnia, Mohammad Bahoo Torody, Nastaran Hekmat Nejad","doi":"10.4236/OJSST.2016.61003","DOIUrl":"https://doi.org/10.4236/OJSST.2016.61003","url":null,"abstract":"Human error plays a pivotal rule in all aspects of engineering activities such as operation, maintenance, design, inspection and installation. Industries are faced up to various significant human errors and consequently irrecoverable loss each year, but still there is a lack of heeds to qualify as well as quantify such errors. This paper tries to estimate the probability of failure in lifting of light structures in sea by considering human errors. To do this, a strong qualifying tool such as Functional Resonance Analysis Method (FRAM) is applied to develop high risk accident scenario by considering non-linear socio-technical interaction in system. Afterwards, human error probability is calculated for each activity using the Success Likelihood Index Method (SLIM) based on resonance that is carried out in FRAM network. Then Event Tree (ET) is conducted to assess consequences. The present study is aimed to interpret the importance of attentions to qualitative methods in implementing quantitative risk analyses to consider human error in calculation. The final outcome depicts that considering human error in the process of risk assessment will result in more accuracy and reliability in final Risk Probability Number (RPN). The developed methodology has been applied to a case study of an offshore installation.","PeriodicalId":183634,"journal":{"name":"Open Journal of Safety Science and Technology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133413442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Whole-Body Vibration in Automated Residential Solid Waste Collection","authors":"H. Paschold","doi":"10.4236/OJSST.2015.54011","DOIUrl":"https://doi.org/10.4236/OJSST.2015.54011","url":null,"abstract":"Drivers of residential solid waste collection trucks are exposed to a wide variety of physical and health hazards. Automated robotic arm collection methods are intended to eliminate physical and ergonomic hazards associated with manual waste collection. However, whole-body vibration (WBV) exposure is a hazard that may be significant and greater than being found in semi-automated or manual methods. WBV is measured in a pilot field study of automated waste collection trucks during normal operation for nearly eight-hour periods on two consecutive days. All four trials are run under similar route conditions. Vibrations are measured at the seat-driver interface using a tri-axial accelerometer seat pad and portable vibration monitors. Measured WBV levels are compared with prior published data from waste collection trucks and health standards. The average WBV exposure value, corresponding to 0.99 m.s-2 for frequency-weighted r.m.s. acceleration, is above the ISO 2631-1 action value of 0.50 m.s-2 and below a limit value of 1.15 m.s-2 as given in the European Parliament Directive 2002/44/EC. This exposure level suggests the presence of potential health risks.","PeriodicalId":183634,"journal":{"name":"Open Journal of Safety Science and Technology","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129625111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Review on Rockburst Theory and Types of Rock Support in Rockburst Prone Mines","authors":"Eugie Kabwe, Yi-ming Wang","doi":"10.4236/OJSST.2015.54013","DOIUrl":"https://doi.org/10.4236/OJSST.2015.54013","url":null,"abstract":"As the depth of mining increases, the occurrence of seismic events is becoming a more common phenomenon causing serious problems regarding to the stability and safety of mines. However, seismicity and the accompanying rockburst phenomena are not a well-defined and well-understood in underground excavations in these times. Efforts to clearly explain the mechanisms are underway. This paper is an overview on the mechanism of rockburst and supports applicably in rockburst prone excavations, predicted classification scales for damage on rock surfaces and rock supports. Current design methods for support systems are reviewed, which are mostly dependent on practical approaches and are geared towards static support design. Based on this, the current review focuses on ground supports under dynamic conditions.","PeriodicalId":183634,"journal":{"name":"Open Journal of Safety Science and Technology","volume":"42 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131682510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Flame Spread over Binary Mixed Liquid Fuels—Super-Flash/Super-Flash Mixed Condition","authors":"K. Sasaki, A. Ito, H. Torikai","doi":"10.4236/OJSST.2015.54012","DOIUrl":"https://doi.org/10.4236/OJSST.2015.54012","url":null,"abstract":"In this study, we investigate the flame spread characteristics of binary mixed liquid fuels that are both in super-flash condition. We propose a method for estimating flashpoint and flame spread rate for binary mixed liquid fuels from binary vapor concentration distribution and compare these estimated values with experimental results. In addition, we measure the flame height and center of the flame leading edge for binary mixed liquid fuels. The results show that, when the flashpoint of each single fuel is known, the flashpoint of the binary mixed liquid fuel can be calculated. Moreover, the fuel that most influence combustion changes near the intersection of vapor concentration distribution in accordance with Raoult’s law. Photographs of the flame indicate discontinuity. We can calculate flame spread rate by using the ratio of each diffusion coefficient to judge equivalently. Finally, it is found that the flame height and center of flame leading edge are proportional to total vapor concentration of the binary mixed liquid fuels.","PeriodicalId":183634,"journal":{"name":"Open Journal of Safety Science and Technology","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131147385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
John Nsikan Efiok, O. Oluseye, Tommy Uduak, Raimi Morufu Olalekan
{"title":"Safety Culture, Policies and Practices in Nigerian Maritime Industry: The Exxon-Mobil Experience","authors":"John Nsikan Efiok, O. Oluseye, Tommy Uduak, Raimi Morufu Olalekan","doi":"10.4236/OJSST.2015.53009","DOIUrl":"https://doi.org/10.4236/OJSST.2015.53009","url":null,"abstract":"Over the years, issues on safety culture and policies in maritime industry have received widespread research attention. Some maritime firms have even gone further to anchor their safety policies on learned corporate culture. However, whether these policies are fully embraced and complied with by seamen is a different kettle of fish altogether. This study therefore, examines safety culture, policies and practices in Nigerian maritime industry with a view to ascertaining: the extent of freight men’ awareness and compliance to safety policies, identifying hindrances to conformity with safety policies and practices, and determining intervention options that management of Exxon-Mobil could use to foster safety compliance. The study adopts a survey approach, with structured questionnaire, and gathering primary data from seamen onboard. The findings reveal that workers are aware of the various safety policies and practices put in place by management, but adherence is impeded by several factors-inadequate staff strength, crew fatigue, and poor wages. Others include contract labour, inadequate safety training, complacency, and high risk tolerance. Surprisingly, improper handover and supervisory interference were not potent enough to hinder compliance with safety regulations at sea.","PeriodicalId":183634,"journal":{"name":"Open Journal of Safety Science and Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130756024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Role Expansion: Implications of the Security Role Expanding into the EHS Function","authors":"Wanda D. Minnick, Jonathan D. Cunkelman","doi":"10.4236/OJSST.2015.53010","DOIUrl":"https://doi.org/10.4236/OJSST.2015.53010","url":null,"abstract":"The purpose of this study was to explore the perception of safety professionals regarding the expansion of their role into security functions. One hundred eleven returned surveys from practicing safety professionals in the manufacturing, oil and gas, and construction industries were examined. Fifty seven percent of respondents agree with role expansion into security and twenty three percent of participants do not. Thematic patterns emerged from their comments and are provided. The remaining twenty percent of respondents fell into a category of “it depends” and the provided reasons suggest other variables that could have influence. A Chi square test for independence indicated that role expansion is independent of industry type; suggesting there is agreement for role expansion into security functions regardless of industry type. Another primary finding is that although the majority of safety professionals agree with role expansion, security coursework is currently not required in a review of accredited occupational safety and health program curricula. This suggests recent graduates may not be formerly prepared for the security elements of their role and should seek or be offered additional training.","PeriodicalId":183634,"journal":{"name":"Open Journal of Safety Science and Technology","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114796631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}