Job satisfaction has a big impact on how an employee performs his job. Both elements have an impact on job safety and employee perception of it. A satisfied employee devotes himself to work, performs orders better, cares for others and for himself. He feels safe in the enterprise. The aim of the paper was to assess employees' job satisfaction and their work performance with use of simply survey. In order to achieve this aim, a survey was conducted among employees of a chosen metallurgical enterprise who were asked to assess level of their job satisfaction. The employees defined their job satisfaction by referring to 20 statements describing this satisfaction and evaluating three factors that were used to compute the satisfaction index. The survey allowed for indication the general level of employee satisfaction.
The paper presents a review of the basic literature on the determination of head injury effects. Introduction to the subject of Head Injury Criterion (HIC) applications as likelihood of head injury measures was made. Individual levels of Abbreviated Injury Scale (AIS) were listed as a representation of the consequences of head injury. Prasad and Mertz curves describing the relationship between the HIC value and the probability of injury for a given AIS level were presented. Exponential models, developed by the authors, representing individual curves were presented. The probability of head injuries at different AIS levels was estimated for selected case studies presented in the literature devoted to human workplace safety. The analysis was concluded with debate and conclusions on the use of the proposed models.
A lot of substances and items are transported by road, sea, rail and air every day. The biggest hazard is created by the transportation of hazardous substances with flammable, caustic or toxic properties. The hazard level increases if such substances are transported through densely populated areas. Traffic intensity, the technical condition of vehicles, drivers’ errors or ignorance and non-compliance with legal regulations are examples of factors that can lead to potential failures in the transport sector. Accidents can cause an uncontrolled release of dangerous gases or liquids, resulting e.g. in environmental degradation or a hazard to humans. The article presents the issues related to the hazards presented by road transportation of hazardous materials. Examples are shown of potential effects of accidents and hazard zones arising due to a release of selected hazardous substances, such as chlorine, ammonia, petrol, diesel oil or LPG.
The paper is concerned with the issue of safety and risks in transport with a detailed focus on rail transport. Nowadays, when it is required to prefer safe and environmentally friendly modes of transport, the knowledge of this issue is important. Part of the paper is an analysis of individual risk factors in railway transport. These include risks in the field of railway safety, natural disasters, economic risks, risks in management systems and technical equipment, and risks related to legislative changes. Attention is paid to comparison and evaluation of individual risk factors in terms of severity and probability of occurrence - frequency. Following the analysis and evaluation of the risk level, are suggest possible or optimal ways to resolve them. The outcome of it is to eliminate or minimize them in the railway transport undertaking. The final part briefly describes the current situation in rail transport, recent developments and the main conditions and assumptions for its further development.
The purpose of this article was to identify occupational hazards at the laser cutter operator's workplace and to assess occupational risk. The article also indicates the basic requirements for the analyzed workplace. Research methods included: observation of the workplace (using a checklist), interviews with the employer, selected employees and a health and safety specialist, as well as analysis of the company's internal documents. The occupational risk assessment carried out at work using the Risk Score method showed that there are many different risk factors for accidents or diseases related to the work performed at the position of the laser cutter operator. However, thanks to the preventive measures applied, they are in the analyzed workplace at an acceptable (acceptable) level.
In enterprises, accidents happen mainly due to improper and dangerous behavior of employees. The approach called Behavioral Safety (BBS) assumes that the most effective attempts to modify dangerous employee behavior are based on influencing people abuse. As a consequence, change in behavior leads to a change in the way of thinking and attitude. In the other words, as a result of using behavioral methods for a long time, employees create a safe attitude that in the future translates into further safe behavior. Mutual control of employees during work is not accepted in Poland and positively perceived by participants of the work process. It is difficult to change the mentality and habits of people. Increasingly, employee behavior control systems are implemented in medium and large enterprises. Shaping a positive attitude of the employee to such systems and methods is a long and time-consuming work that lies with the employer and OSH supervisor. Presented studies have shown that a fairly large proportion of employees do not understand the positive effects of using behavioral safety methods. There is a great need to shape awareness of safe behaviors among Polish employees using behavioral safety, i.e. safety based on mutual observation of behaviors. This paper contains the results of the first stage of the study aimed at modifying undesirable behavior among employees using the implemented BBS system.
The main issue of the article is the corrosion of the reinforced concrete elements by the co-influence of the aggressive and power factors. The problem of corrosion is ex-tremely actual one. Therefore the tests were carried out upon the specimens considering the corrosion in the acid environment, namely 10 % H2SO4. The acid environment H2SO4 was taken as a model of the aggressive environment. Conclusions concerning the corrosion model of the cross section and investigation of stress-strain state have been made. That material concerns the problem of the reinforced concrete corrosion as a whole construction. Reinforced concrete beams were tested with and without the co-action of the aggressive environment and power factor.
Determination of shear-load-bearing capacity of reinforced concrete beams (according to the current normative documents), comprises particular recommended values, which do not depend on the parameters of the sample or load. This article describes the methodology for determination the shear strength with suggestions for calculation the coefficient CRd,c and compressed element tilt angle Ѳ while reinforced concrete elements` calculation with the use of “truss model”. In order to confirm the methodology 4 reinforced concrete beams were tested. Tests were performed in order to investigate each particular inclined section separately. Variable parameter was the relative shear span a/d, with its values a/d=2, a/d=1,5 and a/d=1. Another parameter was the usage of composite strengthening system, made for relative shear span a\d=2. Samples were tested as single-span beams subjected to short-term loading. The calculation with the use only the values, given in norms showed significant divergence of results. Using the refined parameter values provided the convergence of results within 16-29% toward overestimation of the experimental data. The composite reinforcement system calculation showed the overestimation of 23%, which is within the same limits as for the control samples.
The article presents a case study of the practical use of BOST surveys to identify the most important factors in chosen enterprise. This article presents an analysis of the answers given to the question contained in the BOST questionnaire, referring to the roof of Toyota’s house. Toyota's management principles by Jeffrey Liker were pointed out, which refers to elements of Toyota’s house roof. Results of the survey were presented and the proposal to improving the processes in the enterprise. Research results were subjected to statistical analysis with a use of basic statistical parameters. It was made a correlation analysis connected with elements of the Toyota’s house roof. Evaluation structure was presented in a graphic form. Based on the survey results of carried out on the population of production workers, a series of importance areas for improvement was formulated. The aim of the analysis is to present which factors are the most important by building the significance sequences of obtained results. The results obtained for the type of small and medium-sized enterprises overlap with the results of tests verified in other enterprises.
Faced with ever-increasing customer demands and global competition, companies are forced to look for production reserves, increase efficiency and productivity. Hence, the need to monitor the use of the machine park has arisen, making it possible to identify waste and production reserves in the implemented technological processes. The aim of the article is to evaluate the effectiveness of the production line of internal frame doors and to analyze the correctness of the use of selected key indicators of the production process effectiveness. This article proposes a response to the problems formulated in manufacturing companies, including practical aspects of the use of specific measures to assess the effectiveness of the use of technical infrastructure. The solutions presented in the article can be used in practice for improvements in production units.