Wyniki wyszukiwania - BazTech

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Prognozowanie skutków wypadków z udziałem rusztowań budowlanych na podstawie przyczyn

Nowobilski Tomasz, Hoła Bożena

Inżynieria i Budownictwo

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2023

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R. 79, nr 9-10

542--547

PL

Każdego roku na polskich budowach dochodzi do kilku tysięcy wypadków przy pracy. Niniejszy artykuł przedstawia metodykę prognozowania skutków wypadków z udziałem rusztowań budowlanych na podstawie autorskiej metodyki przesiewania. Podstawą dla przeprowadzonych badań był zbiór danych pozyskanych z zasobów Państwowej Inspekcji Pracy dotyczący 200 wypadków. Wyniki badań pozwalają na procentowe określenie prawdopodobieństwa wystąpienia lekkich, ciężkich i śmiertelnych skutków wypadku.

EN

Each year, several thousand accidents at work occur on Polish construction sites. This article presents a methodology for predicting the consequences of accidents involving construction scaffolding on the basis of the author's screening methodology. The basis for the research was a set of data obtained from the resources of the National Labour Inspectorate concerning 200 accidents. The results of the study allow for a percentage determination of the probability of light, heavy and fatal consequences of an accident.

2

Are Polish chemical periodicals doomed to collapse?

Polaczek Jerzy

Polish Technical Review

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2021

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No. 1

26--31

3

Differentiating fallers from nonfallers using nonlinear variability analyses of data from a low-cost portable footswitch device: a feasibility study

Gonabadi Arash, Antonellis Prokopios, Malcolm Philippe

Acta of Bioengineering and Biomechanics

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2021

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Vol. 23, no. 2

139--145

EN

Purpose: Falls are one of the main causes of injuries in older adults. This study evaluated a low-cost footswitch device that was designed to measure gait variability and investigates whether there are any relationships between variability metrics and clinical balance tests for individuals with a history of previous falls. Methods: Sixteen older adults completed a history of falls questionnaire, three functional tests related to fall risk, and walked on a treadmill with the footswitch device. We extracted the stride times from the device and applied two nonlinear variability analyses: coefficient of variation and detrended fluctuation analysis. Results: The temporal variables and variability metrics from the footswitch device correlated with gold-standard measurements based on ground reaction force data. One variability metric (detrended fluctuation analysis) showed a significant relationship with the presence of past falls with a sensitivity of 43%. Conclusion: This feasibility study demonstrates the basis for using low-cost footswitch devices to predict fall risk.

4

An expert system for the quantification of fault rates in construction fall accidents

Birgonul M. T., Dikmen I., Budayan C., Demirel T.

International Journal of Occupational Safety and Ergonomics

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2016

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Vol. 22, No. 1

20--31

EN

Introduction. Expert witness reports, prepared with the aim of quantifying fault rates among parties, play an important role in a court's final decision. However, conflicting fault rates assigned by different expert witness boards lead to iterative objections raised by the related parties. This unfavorable situation mainly originates due to the subjectivity of expert judgments and unavailability of objective information about the causes of accidents. As a solution to this shortcoming, an expert system based on a rule-based system was developed for the quantification of fault rates in construction fall accidents. The aim of developing DsSafe is decreasing the subjectivity inherent in expert witness reports. Methodology. Eighty-four inspection reports prepared by the official and authorized inspectors were examined and root causes of construction fall accidents in Turkey were identified. Using this information, an evaluation form was designed and submitted to the experts. Experts were asked to evaluate the importance level of the factors that govern fall accidents and determine the fault rates under different scenarios. Based on expert judgments, a rule-based expert system was developed. The accuracy and reliability of DsSafe were tested with real data as obtained from finalized court cases. Result. DsSafe gives satisfactory results.

5

Slipping on pedestrian surfaces: methods for measuring and evaluating the slip resistance

Wetzel C., Windhovel U., Mewes D., Ceylan O.

International Journal of Occupational Safety and Ergonomics

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2015

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Vol. 21, No. 3

256--267

EN

Tripping, slipping and falling accidents are among the types of accident with a high incidence. This article describes the requirements concerning slip resistance, as well as the state of the art of slip resistance measurement standards in the European Community and the USA. The article also describes how risk assessment can be performed in the field.

6

Protective Footwear And The Risk Of Slipping In Older Workers – Definitions, Achievements, Recommendations

Irzmańska E.

Autex Research Journal

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2015

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Vol. 15, no. 3

181--190

EN

Foot slippage is the most widespread unforeseen event causing falls on the same level, and a potentially contributing factor to falls from height and falls to a lower level. Statistical data on the number of slip-related accidents at work show the importance of the problem of slipping and indicate the need to continuously improve preventive measures designed to reduce injuries related to slipping, tripping, and falling (STF) on the same level. It is therefore necessary to continuously and insightfully analyze the causes of falls and undertake efforts to eliminate the occurrence of slip- and trip-induced workplace accidents. The occurrence of slips and trips is primarily related to the type and quality of floor surfaces, but it also depends on the biomechanical characteristics of the lower limbs in the transitional phases of walking gait, sole material and tread, human factors such as age, weight, and motor and vision function, the ability to adapt to the floor surface conditions, as well as on a number of factors linked to the workplace environment and work organization. This problem is going to escalate as a result of the higher retirement age, due to which many persons over the age of 60 will have to continue working, often in hazardous conditions.

7

Friction Between Footwear and Floor Covered With Solid Particles Under Dry and Wet Conditions

Li K. W., Meng F., Zhang W.

International Journal of Occupational Safety and Ergonomics

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2014

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Vol. 20, No. 1

43--53

EN

Solid particles on the floor, both dry and wet, are common but their effects on the friction on the floor were seldom discussed in the literature. In this study, friction measurements were conducted to test the effects of particle size of solid contaminants on the friction coefficient on the floor under footwear, floor, and surface conditions. The results supported the hypothesis that particle size of solids affected the friction coefficient and the effects depended on footwear, floor, and surface conditions. On dry surfaces, solid particles resulted in friction loss when the Neolite footwear pad was used. On the other hand, solid particles provided additional friction when measured with the ethylene vinyl acetate (EVA) footwear pad. On wet surfaces, introducing solid particles made the floors more slip-resistant and such effects depended on particle size. This study provides information for better understanding of the mechanism of slipping when solid contaminants are present.

8

Systemy szynowe do asekuracji

Walas A.

Nowoczesne Budownictwo Inżynieryjne

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2008

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Nr 1

42

PL

W artykule zamieszczono informacje nt. sposobów i środków ochrony zbiorowej przy wykonywaniu czynności związanych z obsługą środków transportu. W Polsce przepisy dotyczące sprzętu chroniącego zawarte są min. w normach: PN-EN 363, PN-EN 795 i PN-EN 795.

9

Effects of Diabetic Neuropathy on Body Sway and Slip Perturbation Detection in Older Population

Kim B. J., Robinson C. J.

International Journal of Occupational Safety and Ergonomics

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2006

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Vol. 12, No. 3

241--254

EN

Postural control is a common mechanism to compensate for unexpected displacements of the body. In the older population, a slip or fall due to a failure of postural control is a common cause of morbidity and mortality. The ability of postural control decreases with aging or neuropathy. In this study, 2 groups, diabetics and non-diabetics in the older population, were compared to determine how patterns of postural sway during quiet standing were related to the detection of perturbation. The SLIP-FALLS system was applied to the measurement of sway and detection of perturbation. In phase 1 of the development of the predictive model, neural network algorithms were applied to find determinant variables for perturbation detection. In phase 2, a fuzzy logic inference system was developed to investigate the relationship between sway and perturbation detection. Results of this study may be applied to the design of floor mats or shoe insoles for preventing fatigue in workplaces.

10

‘‘Slip and Fall’’ Theory - Extreme Order Statistics

Barnett R. L.

International Journal of Occupational Safety and Ergonomics

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2002

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Vol. 8, No. 2

135--158

EN

Classical ‘‘slip and fall’’ analysis was reformulated in this paper to account for the stochastic nature of friction. As it turned out, the new theory, arising from this analysis, was a precise statement of the distribution function for the smallest value among n independent observations. This made it possible to invoke an important result from the asymptotic theory of extreme order statistics that reduced the theory to a simple and elegant relationship among the probability of slipping, the critical friction criterion, the distance traveled by the walker, and the average, spread and asymmetry of the distribution of friction coefficients. The new theory reveals that short walks lead to fewer falls; low friction floors are sometimes better than high friction ones.