Browsing by Subject "risk analysis"

Now showing 1 - 9 of 9

Access status: Restricted ,
Analiza ryzyka i niepewności geologiczno-górniczego projektu zagospodarowania złoża rud cynku i ołowiu „Laski”
(Data obrony: 2013-07-25) Kulig, Marcin
Wydział Geologii, Geofizyki i Ochrony Środowiska
Złoże rud cynku i ołowiu „Laski” usytuowane jest w województwie małopolskim, we wschodniej części Wyżyny Śląsko-Krakowskiej. Z weryfikacji zasobów wynika, że złoże „Laski” można rozpatrywać pod względem przyszłego zagospodarowania. W pracy omówiono najważniejsze czynniki ryzyka i źródła niepewności pojawiające się w inwestycjach górniczych. Przedstawiono techniki oceny ekonomicznej projektów surowcowych oraz określono metody wyceny aktywów geologiczno-górniczych. Przeprowadzono również symulację Monte Carlo z wykorzystaniem programu @RISK w celu analizy ryzyka i niepewności zagospodarowania złoża rud cynku i ołowiu „Laski”. Uzyskane wyniki ukazują ryzyko finansowe, które może być mierzone jako prawdopodobieństwo niepowodzenia przedsięwzięcia inwestycyjnego.
Access status: Open Access ,
Flash flood risk and climate analysis in the extreme south of Algeria (the case of In-Guezzam City)
(Wydawnictwa AGH, 2022) Zegait, Rachid; Şen, Zekâi; Pulido-Bosch, Antonio; Madi, Housseyn; Hamadeha, Bachir
Natural risks, particularly flood risk, are a topical subject in Algeria and throughout the world, particularly given the last major catastrophic floods in Sudan (2020) and North Africa. With the development of the climate change phenomenon in the world, risk management is becoming increasingly necessary for all the actors concerned (decision-makers, technicians, and the population) to identify protection issues. In 2018, in the extreme south of Algeria, In-Guezzam City suffered a devastating flood that caused significant damage and loss of human and material resources. More than 100 homes collapsed, and approximately 345 families were displaced. Currently, there is no research work to assess the hydrological situation and the risk of flooding in this region. Therefore, the main purpose of this study is to shed light on the risk of flash floods in the extreme south of Algeria with more specific attention to the August 2018 floods as well as the climate trends over the past 30 years using Mann-Kendall test and Sen's Slope Estimator. The chosen approach involves a hydrological study and hydrodynamic modeling using HEC-RAS software. This latter allows for simulating floods using statistical methods and creating several regional flood hazard maps.
Access status: Open Access ,
Interdisciplinary aspects of tunnel design
(2007) Pöttler, Rudolf; Starjakob, Franz; Sysik, Paweł
When taking all aspects (geology, environment, geotechnics, safety, traffic aspects, ventilation, economic aspects, operational aspects) into account tunneling is a very complex design task. It is to be understood that the whole is more than the sum of its parts, and requires an interdisciplinary design process. The paper will deal in the first chapter with the success factors necessary for the interdisciplinary design and layout of high-speed railway tunnels. ILF carries out complex tunnel projects using its in-house capacity. Examples of how different aspects influence each other will be given with the high-speed railway tunnels in Germany and Austria.
Access status: Open Access ,
MUD LOGGING - a real time interconnection between geology and drilling
(2011) Ştefănescu, Dan-Paul; Vlasín, Ioana; Piteiu, Marcel A.
The final stage of geological research, which is in fact the essence of the exploration activity for discovering the new hydrocarbons accumulations, is actually represented by designing the new wells. For sure one of the main condition to achieve the proposed target could be considered the well monitoring. The implementation in Romgaz of the concept known as mud logging wasn't so easy. The beginning is related to the period 1989-1990, when the deepest well from Transylvanian Basin was drilled and the first mud logging unit was rented from the offshore Romanian company. After that successful experiment, few appraisal wells were monitored in this way, followed by more and more wells, so nowadays for each well there is a mud logging unit belonging to different drilling contractors or other services companies. In the last period, Romgaz set up a new department specially designed for mud logging supervising. The great advantage is represented not only by monitoring the drilling parameters (weight on bit, rate of penetration, rotary torque, pump strokes, the mud pit level, etc.) which allows to create a more accurate image of the well just from the drilling stage, but also by gathering a lot of geological data such as lithological description, calcimetry analyses, gas indicators and others, assuring in fact a maximum well security. All these information correlated with the borehole geophysics can identify the possible zones of interest for hydrocarbons accumulations and predict the well testing program and thus the future status of the well. Beside the short description of the main recorded drilling parameters and some aspects regarding the geological assistance, the case study presented in the paper highlights a very good correlation between drilling and geological parameters, open hole logs and the production tests. It's very obvious that diagrams provided by the mud logging services, including specialized devices and a competitive team, represent an accurate data base not only for the current well evaluation, but also for a better approach of the risk analyses in designing the new wells. For this reason, the mud logging service became a real necessity and represents in Romgaz a constant requirement for each new well.
Access status: Restricted ,
Ocena ryzyka dla wybranego ujęcia wód podziemnych, dla celów zaopatrzenia ludności w wodę pitną
(Data obrony: 2019-02-01) Gwiżdż, Michał
Wydział Geologii, Geofizyki i Ochrony Środowiska
Analiza ryzyka jest nowym narzędziem wprowadzonym przez Ustawę z dnia 20 lipca 2017 r. - Prawo wodne (Dz.U. 2017 poz. 1566). W swoim zamierzeniu ma poprawić jakość ujmowanej wody dla celów zapotrzebowania ludności w wodę pitną. Nie jest jednak konkretnie sformułowana forma w jakiej powinno się ją przygotowywać. Celem projektu jest przedstawienie idei analizy ryzyka zgodnie z ustawą. Pochylono się także nad problemem konstrukcji i zaproponowano model własny uznany przez autora za najbardziej słuszny. Na podstawie obowiązujących norm ustalono szczegółowe wytyczne dla analizy ryzyka. Dokument powinien być wykonywany w ustaleniu o aktualne wyniki badań hydrogeologicznych tj. datowane pomiary położenia zwierciadła wód podziemnych, wydajności źródeł i przepływy w ciekach powierzchniowych a także rzeczywiste wydajności ujęć oraz badania składu chemicznego wód powierzchniowych i podziemnych.
Access status: Restricted ,
Proces wprowadzenia na rynek polski medycznego urządzenia elektrycznego
(Data obrony: 2018-09-25) Sabik, Joanna
Wydział Elektrotechniki, Automatyki, Informatyki i Inżynierii Biomedycznej
Access status: Open Access ,
Ryzyko inwestycyjne i eksploatacyjne w przemyśle wytwarzania energii elektrycznej
(2011) Michalski, Marek Ł.
W opracowaniu przedstawiono wady i zalety poszczególnych metod uwzględnienia i oceny ryzyka oraz ich zastosowania w wyborze inwestycji w przemyśle wytwarzania energii elektrycznej. W tym zakresie ocenie poddano zastosowanie podwyższonej stopy dyskontowej, analizę wrażliwości i scenariuszy, symulację Monte Carlo oraz drzewa decyzyjne i opcje realne.
Access status: Open Access ,
Sposób analizy przyczyn i konsekwencji występowania zagrożenia tąpaniami na przykładzie kopalni ČSA
(Wydawnictwa AGH, 2008) Makówka, Janusz; Kabiesz, Józef
In the paper a method of possible rock bursts risk sources analysis during potentially endangered seam exploitation has been presented. Beside stress distribution in seam plane, deformation state in three roof horizons has been calculated, probable maximum seismic tremor energy during exploitation has been determined and seismic energy stream density reaching seam has been calculated. On that case, rock burst prevention scheme has been formulated.
Access status: Open Access ,
The future of carbon capture and storage technology: an innovative approach with digital twin
(Wydawnictwa AGH, 2023) Bielka, Paweł
In order to fight climate change, the EU has set a goal of achieving net-zero greenhouse gas emissions by 2050. To achieve carbon neutrality, greenhouse emissions from human activities should be at least 85% lower than in 1990. The remaining 15% can be achieved through additional measures such as increasing carbon capture and storage (CCS) and reducing emissions. CCS will facilitate the decarbonization of heavy industry, contribute to the emergence of a clean hydrogen economy, and aid in achieving net-zero emissions. As an emerging technology in the Industry 4.0, Digital Twin (DT) is gaining attention due to the possibilities arising from its application, such as precise process optimization in the design phase, quality control, monitoring, decision-making, and through comprehensive modeling of the physical world as a group of connected digital models. The introduction of digital technologies into the CCS sector has the potential to revolutionize the way $CO_{2}$ capture, transportation, and storage processes are carried out. This article aims to present the fundamental value of different modeling techniques, technologies enabling the creation of DT’s uncertainty quantification methods commonly used in Digital Twins, as well as the application of Digital Twin in CCS technology and the potential benefits it can bring, including increases efficiency and cost minimization. Additionally, the possibilities of using DS’s in improving process monitoring and forecasting were discussed which can contribute to better emission control and increases system effectiveness. Current research and projects utilizing this technology were also presented, including real-time modeling of fluid flow, $CO_{2}$ transport network optimization, and storage process improvement.