Wyniki wyszukiwania - Biblioteka Nauki

1

Failure risk analysis of water distributions systems using hydraulic models on real field data

100%

Studziński A. , Pietrucha-Urbanik K.

Ekonomia i Środowisko

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2019

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tom nr 1

152--165

EN

At this paper the analysis of failure risk in the two water supply systems in the south-eastern Poland is presented. For this purpose the hydraulic models of the water networks created in the EPANET 2 on the basis of data obtained from the water networks operation were used. The consequences of failure of individual pipelines were determined. The areas that are most vulnerable to pressure fluctuations in the water supply system resulting from the failure of these pipelines, were located.

2

Protecting critical infrastructure of water supply in interests of consumer safety

80%

Tchórzewska-Cieślak B. , Pietrucha-Urbanik K. , Rak J. R.

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tom Summer Safety and Reliability Seminar 2021

327--337

EN

Given the status as an element of Critical Infrastructure, the operation of a water-supply system is an issue of importance that demands detailed analysis. There are in fact a range of crisis situations that may arise (e.g. floods, droughts, earthquakes, breakdowns, technical disasters, etc.) in which a ubiquitous common problem may relate to the supply of the population in drinking water. The lack of any such supply is fully capable of ensuring that serious disease and even epidemics arise, hence the need for emergency plans to be drawn up as regards the supply of drinking water under various crisis situations. The trigger for analysis and safety assessment in regard to a water-supply system is then the introduction of procedures in regard to safety management that minimise the impacts of incidental undesirable events, as well as the health and sanitary risks posed to water consumers, while introducing procedures appropriate in the context of the supply of water under crisis conditions.

3

Water distribution and risk governance: data issues in view of development of risk-informed decision-making approach

80%

Pietrucha-Urbanik K. , Tchórzewska-Cieślak B. , Eid M.

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2022

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tom Summer Safety and Reliability Seminar 2022

173--184

EN

The issues of failure risk assessment in water distribution systems are presented. Water supply network failure constitute a crucial issue in water distribution sector. Attention has been paid to the problem of risk assessment considering risk acceptance criteria. Besides, the water network failure indicators were assessed. The presented methods can be used to describe the general characteristics and the technical conditions of the water distribution system. The chapter is intended to draw the attention to the need for further technical and organisational improvement and for the standardization of the failure risk assessment in the water distribution systems.

4

Noise analysis and reduction methods in sanitation facilities and equipment

80%

Kalda G. , Paździorny T. , Pietrucha-Urbanik K.

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tom Vol. 69

17--26

EN

The article presents an analysis of noise in sanitary devices, and the described methods of reducing noise in places where noise occurs. The given results of noise tests of sanitary facilities and workplaces concerns one of the municipal company. Described sources of noise in water supply, sewage as well as ventilation and air conditioning systems. It has been shown that the noises occurring in residential buildings may be caused by excessively high pressure inside the installation, where, for example, when closing the valve, a water hammer phenomenon arises, causing audible noises, especially when the installation is made of metal materials. The article analyzes noise in sanitary facilities, describes the methods of reducing noise in places where noise occurs. The given results of noise tests of sanitary facilities and workplaces in one of the municipal companies of the city of the Subcarpathian province. Described sources of noise in water supply, sewage as well as ventilation and air conditioning systems. It has been shown that the noises occurring in residential buildings may be caused by excessively high pressure inside the installation, where, for example, when closing the valve, a water hammer phenomenon arises, causing audible noises, especially when the installation is made of metal materials. It has been shown that the main causes of noise in plumbing systems can be rigid pipe fittings. Noises in the sewage system are related to the outflow of used water in vertical and horizontal sections. The phenomenon most often occurs in places connecting vertical pipes with horizontal pipes, as well as the use of too small diameters of pipes. Material noise reduction in sewage systems can be ensured thanks to a properly designed system of fastening pipes to fixed elements. An important step is to use appropriate sound insulation to stop unwanted sounds. The reason for noise in the air-conditioning and ventilation system are changes in the velocity of the flowing air mass and the occurrence of turbulences during the change of the air flow direction. This causes the ducts to resonate and the air flow noise through the diffusers. The most common noise problem in the central heating installation is the use of a solid fuel boiler, the maintenance work of the device is a problem, as it requires cleaning the furnace, which is related to the noise that is transmitted through the installation pipes to the rooms. Based on the analysis of workstations at the municipal company plant, it has been shown that the highest conformity deviation level is in the drying room in the position of a machine and device operator.

5

Ecological safety as an important part of environmental and people security

80%

Kalda G. , Sokolan Y. , Pietrucha-Urbanik K.

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2023

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tom Vol. 70

5--15

EN

The article substantiates the importance of finding and studying methods of restructuring of consciousness in relation to nature, the development of new priorities of interaction between society and the environment as a fundamentally different path of development of civilization. The main characteristics of environmental education as one of the main social aspects of environmental safety at the present stage are given. The essence and assessment of ecological competence as an important integral indicator of learning achievements are defined. It is shown, what features are characterized by global ecological safety and on what the safety of human stay both in the workplace and in the environment is based. The authors show a set of environmental standards, which are important to ensure environmental safety. The problems of environmental security, as well as methods of scientific study of environmental factors are presented. It is shown what impact anthropogenic environmental security has on global environmental security. An analysis of the requirements that should be observed in the construction process, such as planning and development of territories, so that it is not a threat to the environmental safety of the environment in general and individuals in particular is carried out. The basic hygienic principle of the planning organization of the territory of new areas of human habitation as well as reconstruction of old territories is presented. It is shown that to ensure human ecological safety around industrial enterprises and facilities with technological processes it is necessary to create special protections, sanitary and protection zones.