Person: ÇİFTÇİOĞLU, GÖKÇEN ALEV
Loading...
Email Address
Birth Date
Research Projects
Organizational Units
Job Title
Last Name
ÇİFTÇİOĞLU
First Name
GÖKÇEN ALEV
Name
6 results
Search Results
Now showing 1 - 6 of 6
Publication Open Access A bibliometric analysis on ircular economy of packaging(2023-08-01) ÇİFTÇİOĞLU, GÖKÇEN ALEV; Tunçok-Çeşme B., Yıldız-Geyhan E., Çiftçioğlu G. A.Publication Open Access Human factors analysis by classifying chemical accidents into operations(2023-05-01) ÇİFTÇİOĞLU, GÖKÇEN ALEV; Yalçın E., Çiftçioğlu G. A., Güzel D. H. B.In the chemical industry, organizational and operational human factors significantly contribute to accidents. Chemical accidents occur in various operations of the industry due to a range of factors. Understanding the relationship between these factors and the accidents that happen is crucial in preventing similar accidents from happening repeatedly and promoting sustainability. Therefore, this study was divided into five operations: maintenance repair, process, loading unloading, storage, and shutdown startup of the chemical industry, to provide a more concrete, intuitive explanation of the interplay between causes and illustrate the routes to failure. The data were collected from 251 accident reports from various online data. The study was analyzed using the Human Factors Analysis and Classification System (HFACS) method as a conceptual framework. Each level’s frequency variables were obtained to define nominal and ordinal data. The chi-square test and Fisher’s exact test were used in the difference analysis of data in the model. The results show that the high-frequency accidents caused under the HFACS framework were organizational processes in the process (63.73%), in the storage (70.58%), and in the shutdown startup (91.66%), and skill-based errors in the maintenance repair (81.81%) and in the loading unloading (66.03%). Furthermore, resource management, technological environment, and personal readiness were significantly correlated with the operations. Human factors have differences in different operations in the chemical industry.Publication Open Access Human reliability analysis methods(2023-05-01) ÇİFTÇİOĞLU, GÖKÇEN ALEV; Yalçın E., Çiftçioğlu G. A., Güzel B. H.Publication Open Access Environmental Life Cycle Assessment of Two Types of Flexible Plastic Packaging under a Sustainable Circular Economy Approach(2024-04-01) ÇİFTÇİOĞLU, GÖKÇEN ALEV; Tunçok-Çeşme B., Yıldız-Geyhan E., ÇİFTÇİOĞLU G. A.While it is of great importance to evaluate plastic waste within the framework of a circular economy today, it is also of great importance to evaluate flexible plastic packaging, which is increasingly used in order to prevent environmental problems. To avoid the disadvantages experienced in recycling due to its multilayer nature, in this study, a life cycle assessment was made for flexible packages consisting of PET/metallized PET/PE and PP/metallized PP/PP with the data provided by the R&D Center of Elif Plastik Ambalaj Sanayi ve Tic. A.¸S.-Huhtamaki Flexibles Istanbul. Within the scope of this evaluation, two types of flexible packaging were analyzed, and an optimal flexible packaging structure for Türkiye was revealed by comparing different scenarios based on different methods in SimaPro 8.1.1.16. LCA was performed for both packages with cumulative energy demand (CED) and CML-IA methods. Four scenarios with different amounts of recycled raw materials were compared against the existing system and a fifth scenario, where electricity is assumed to be obtained from solar energy. Overall, we found that the largest environmental impact was in the existing system. However, despite being a renewable energy source, we observed that the solar energy scenario had almost as significant an impact as the existing system. When scenarios involving recycled raw materials were examined, we clearly observed that as the amount of recycled raw materials increased, the environmental impact decreased. Therefore, it emerged that the scenario with the highest amount of recycled raw materials is the most optimal scenario in many respects. There are clear differences in the results due to differences in plastic types. This study, conducted with real data, is highly important for the flexible packaging literature. A table has been provided for changing the type of plastic, changing the source of electricity generation, and reducing waste by using recycled raw materials in order to make flexible packaging more environmentally beneficial. Keywords: circular economy; LCA; life cycle assessment; flexible packaging; environmental life cycle assessment (ELCA); SimaPro; sustainabilityPublication Open Access The evaluation of vapor cloud explosion risk through consequence analysis approach for an LPG filling terminal in Turkey Türkiye'de bir LPG dolum terminali için buhar bulutu patlama riskinin sonuç analizi yaklaşimi ile deǧerlendirilmesi(2024-01-01) ÇİFTÇİOĞLU, GÖKÇEN ALEV; Çalik F., ÇİFTÇİOĞLU G. A., Kadirgan M. A. N.The Consequence analysis modeling approach refers to the risk analysis method that quantitatively evaluates the effect of physical damage to be caused by flammable chemicals in the chemical process industry on the plant equipment, structures in and around the plant, the environment and living things after the loss of integrity scenarios. This study minimizes uncertainties such as release cross-section, flammable gas cloud mass, congestion geometry and DDT (deflagration to detonation transition) assessment, fuel reactivity involved in the traditional approach discussed in the literature and presents a conservative systematic procedure. This consequence analysis modelling based on near-miss LPG dispersion that have happened approximately 15 minutes in July 2017 at an LPG filling facility. The damage parameters caused by explosive LPG cloud mass in the defined scenarios were analyzed in ALOHA software. The overpressure outputs were transfered to GIS-based Marplot software and were estimated damage on sensitive locations caused by explosion overpressure through probit functions. The probit equations used in this study for building damage estimations put all buildings in the same category. The different reinforcement and physical properties of the buildings make it difficult to reach accurate estimates for possible structural damage. In addition, this study is a pre-assessment on the dimensions of the explosion risk due to the uncertainties and assumptions contained in the method. At the decision-making stage for the facility investment plans should make more comprehensive analysis.Publication Open Access Validity and reliability study of charity hazard scale(2023-11-01) ÇİFTÇİOĞLU, GÖKÇEN ALEV; Özkan A. H., Çiftçioğlu G. A., Güzel H., Başol O.Safety culture, which enables people to think proactively, is a concept that is still developing in Turkey. From a disaster management point of view, the concept of safety culture provides the formation of a culture covering the implementation of the risk management phase. Therefore, it is possible to state that the concept of charity hazard poses a serious threat to the safety culture. Thus, the concept of charity hazard is of great importance in the formation of safety culture in the fields of occupational health and safety, emergency aid and disaster management. In this context, the present study aims to develop a valid and reliable scale for the concept of charity hazard. As a result of the analyses conducted with 532 participants residing in different cities across Turkey and working in different fields; the factor loadings of the items in the scale ranged between 0.51 and 0.95 and the total variance explained was calculated as 63.244 %. According to the results of the confirmatory factor analysis, the charity hazard scale consists of 3 factors and 10 items (X2/df = 2.346, RMSEA: 0.050, SRMR: 0.048, NFI: 0.97, NNFI: 0.97, CFI: 0.98, GFI: 0.97, AGFI: 0.95). The internal consistency of the scale was calculated as 0.758 and item-total correlations ranged between 0.318 and 0.554. In conclusion, the analyses show that the charity hazard scale developed is a valid and reliable measurement tool.