sefer gunbeyaz | University of Strathclyde (original) (raw)
Papers by sefer gunbeyaz
Ocean Engineering, Oct 1, 2023
Journal of Shipping and Trade
Cargo conveyance onboard dry bulk carriers is contemporarily often affiliated to preoperational w... more Cargo conveyance onboard dry bulk carriers is contemporarily often affiliated to preoperational waiting times, which may affect the income situation of stakeholders and the sustainability of the sector. Therefore, repetitively occurring waiting problems, potentially paired with port congestion phenomena, indicating that just in time (JIT) arrival potential for a distinct or a combination of reasons has not been realised, can be frequently identified. Undesired increment of waiting times and development of port congestion is frequently responded to by an array of measures. JIT arrival concepts, vessel arrival systems (VAS) and virtual arrival (VA) agreements thereby do not strive to eliminate waiting times but facilitate their sensible transformation into additional navigation time. In practice, VAS applications may, however, only enfold their inherent sustainability potential within closely defined delimitations. At the same time, JIT mechanisms and VA agreements may lack acceptance...
Ocean Engineering
Ship dismantling is the recommended recycling solution for the end of a ship's life, but ... more Ship dismantling is the recommended recycling solution for the end of a ship's life, but the process is not free of occupational risk. Despite proper regulations, there are underlying chemical and physical hazards, mainly due to the cutting of steel parts, which is the core of the recycling process. The overall aim of this research study is to determine, in two case study examples, the ship recycling workers' potential occupational exposure by inhalation of chemical agents generated by the torch cutting process of coated and de-coated steel. This was carried out specifically through (i) monitoring and measuring ship recycling workers' local environment for the inhalable (total dust) and respirable (fine dust) fractions during their working operations, (ii) analysing the heavy metal content of the dust and (iii) calculating and comparing this against occupational exposure limits, (iv) comparing de-coating operations with cutting of coated and de-coated steel. Results of this study show that without further mitigation workers involved in torch cutting processes are at high risk of exposure to heavy metals by inhalation as these are exceeding the norms defined by regulatory bodies.
Journal of Cleaner Production
Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2014Thesis (M.Sc.) ... more Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2014Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2014Bu çalışmada, katı cisimlerin suya girişi problemi üzerinde etkisi olan faktörler yeni tasarlanan deney sistemiyle incelenmiştir. Deney sisteminde 1.3 metre boyunda 0.6 metre genişliğinde ve 0.6 metre derinliğinde bir tank kullanılmıştır. Farklı kesit açılarına sahip dört üçgen prizma bloklar farklı yüksekliklerden ve farklı ağırlıklarla sakin su yüzeyine serbest düşürülmüştür. Kesit açıları 15°, 30°, 45°, 60° olan bloklar 4 kg, 6 kg, 8 kg ağırlık kombinasyonları ile 0.3 m, 0.6 m, 0.9 m yüksekliklerden düşürülmüştür. Ağırlık değişimleri ile farklı deplasman kombinasyonları denenmiş, düşme yüksekliği değişimi ile de farklı deniz durumlarında yüksek hızlı teknelerin davranışı ve can filikalarının farklı yükseklikteki gemi veya platformlardan suya düşüşünün modellenmesi amaçlanmıştır. Çarpma anında blokların maruz ka...
1st International Conference on the Stability and Safety of Ships and Ocean Vehicles, Jun 7, 2021
Ship recycling process is a tricky business and accepted as one of the most hazardous working env... more Ship recycling process is a tricky business and accepted as one of the most hazardous working environments if not done correctly. Ship recycling has many severe risks and most of the times it is lacking proper planning. Due to its complex procedure and the risks involved, there is a need of structured and guided way of approaching job tasks, and in addition, incorporating hazard identification and risk management for various experts is needed. A web base structured risk assessment tool dedicated to various professions related to ship recycling is developed. In this paper, the principles behind this web-based tool ‘Three Step Online tool’ are introduced, and its methodology is explained. Moreover, a case study of a ship recycling job task in Indonesia is presented. The result shows that this online based tool has been well received by multiple experts such as occupational health & safety experts and ship recyclers
Marine pollution bulletin, Apr 1, 2024
Ship recycling has gained significant importance in recent years due to the growing awareness of ... more Ship recycling has gained significant importance in recent years due to the growing awareness of environmental concerns and the need for sustainable practices within the maritime industry. As vessels reach the end of their operational life, proper recycling methods are crucial to mitigate environmental impacts and promote resource conservation. With an increasing number of ships being decommissioned annually, there has been a growing interest and emphasis on developing efficient and eco-friendly ship recycling practices worldwide. This article presents a systematic literature review and bibliometric analysis of 228 studies on ship recycling indexed in Scopus. Employing the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) methodology for its robustness in comprehensive literature analysis, this review uncovers key insights into prominent countries, authors, journals, collaborations, topics, and historical trends in ship recycling research, thereby extending the scope of previous reviews. Notably, major contributions from Turkey, India, Bangladesh, the USA, and China focus on environmental impact studies, reflecting urgent global sustainability concerns. The review discusses commonly adopted methodologies such as Life Cycle Assessment and Elemental Analysis, shedding light on their application in this field. Through thematic analysis across 8 categories, future research pathways are identified, highlighting crucial areas such as continuous environmental monitoring, innovative renewable energy extraction from end-of-life vessels, and the need for human factors in ship recycling. This comprehensive synthesis of existing knowledge and identification of emergent research needs and opportunities serve as a foundational resource for impactful future research and informed policymaking, particularly in aligning with global environmental and sustainability goals. Researchers, policymakers and other stakeholders in maritime safety and environmental sustainability may find the knowledge gained from this systematic literature review insightful.
Sustainability, Jan 3, 2024
International Conference Marine Technology, Oct 16, 2020
The study is aimed to design a ship recycling yard in Indonesia which comply to the requirements ... more The study is aimed to design a ship recycling yard in Indonesia which comply to the requirements stated in the Hong Kong Convention for the Safe and Environmentally Sound Recycling of Ships with the capacity up to 30,000 dwt. The study was conducted based on information gathered from field and literature survey. It is estimated that there are approximately 1,400 ships in Indonesia have reached more than 25 years, which need to be replaced by the new ones and will be sent for recycling, but there is not any ship recycling yard that is comply to the Hong Kong Convention requirements, and most of the ship recycling activities are carried out in traditional ways. It is expected that the proposed design will become a reference for ship recycling industry in Indonesia
Journal of Ship Production and Design
_ A shipyard located in Yalova, Turkey, with an annual processing capacity of 50,000 tons of stee... more _ A shipyard located in Yalova, Turkey, with an annual processing capacity of 50,000 tons of steel, is studied to improve the layout to increase the production efficiency. The material and personnel traffic inside the shipyard is complex, considering the nature of the shipyards. Therefore, an adjacency-based optimization procedure has been adopted in this study since this procedure allows quantitative evaluation of these aspects. Systematic layout planning (SLP) and graph-theoretical approach were used to generate 12 alternative layouts. Then, the best alternative layout was selected using the efficiency rate method. This study demonstrates the use of SLP and graphic-theoretical approach in a maritime context and utilizes the efficiency rate method to compare the alternative layouts, which are between 48.91% and 73.91% efficiencies, respectively. This study is a novel contribution to the literature in terms of demonstrating this methodology for shipbuilding applications, and practical applications for the industry can improve the industry to improve the efficiency of their operations. Introduction In parallel with the increase in global economic growth and technological developments, new ships are needed for marine transportation, energy, security, fishing, etc. This need triggers a globally competitive environment for the production of vessels in a cheap and efficient manner, which directly affects the shipbuilding industry and shipyards (Odabasi 1993). The alignment of the production departments in the shipyard is critical for productivity. The shipyard should be optimized and designed as an efficient system to minimize unnecessary material and personnel traffic. On the other hand, the majority of shipyards are poorly designed. Facility layout deals with the placement of the production departments based on their relative relationship, and facility layout design aims to streamline the workflow and increase productivity (Muther & Hales 2015). Dixit et al. (2020) describe the facility layout as a physical arrangement of departments with a focus on workflow across the system to achieve highest operational efficiency at the lowest cost. Facilities layout is fundamental to shipyard efficiency. To address this gap in the literature, this paper examines the application of systematic layout planning (SLP) and graph-theoretical approach to the optimization of a specific facility layout.
Gemi ve Deniz Teknolojisi, 2021
Tüm mühendislik alanlarında olduğu gibi gemi inşaatı ve gemi makineleri mühendisliğinde de karar ... more Tüm mühendislik alanlarında olduğu gibi gemi inşaatı ve gemi makineleri mühendisliğinde de karar verme süreçleri önemlidir. Karar vermenin en çok uygulanan dalı ise, nitel ve nicel faktörleri birlikte içeren, çok kriterli karar vermedir. Bu çalışmada, çok kriterli karar verme (MCDM) yöntemlerinin gemi inşaatı ve gemi makineleri mühendisliğinde uygulamaları 21 Türkçe lisansüstü tezi, 21 İngilizce uluslararası makale ile incelenmiştir. En sık başvurulan MCDM yönteminin, ilk önce AHP ve sonrasında TOPSIS olduğu, en sık kullanım amacının ise ilk önce gemi sistemleri seçimi ve sonrasında gemi dizaynı olduğu tespit edilmiştir. Yöneylem araştırmasının bir alt alanı olan MCDM, konuya yeni giriş yapmak isteyen gemi inşaatı ve gemi makineleri mühendisleri için sunulmuştur. Bu çalışma ile araştırmacılara, tespit ettikleri özgün MCDM problemlerine, özgün MCDM yaklaşımları getirmelerine yardımcı olmak amaçlanmıştır.
International Conference Marine Technology, Oct 16, 2020
The study is aimed to design a ship recycling yard in Indonesia which comply to the requirements ... more The study is aimed to design a ship recycling yard in Indonesia which comply to the requirements stated in the Hong Kong Convention for the Safe and Environmentally Sound Recycling of Ships with the capacity up to 30,000 dwt. The study was conducted based on information gathered from field and literature survey. It is estimated that there are approximately 1,400 ships in Indonesia have reached more than 25 years, which need to be replaced by the new ones and will be sent for recycling, but there is not any ship recycling yard that is comply to the Hong Kong Convention requirements, and most of the ship recycling activities are carried out in traditional ways. It is expected that the proposed design will become a reference for ship recycling industry in Indonesia
Ships and Offshore Structures, 2022
Recycling, 2021
Ship recycling is gaining attention in Indonesia due to the increase in end-of-life ships and une... more Ship recycling is gaining attention in Indonesia due to the increase in end-of-life ships and uneconomical nationally flagged ships, and is considered a prospective source of economic development and employment opportunity, and yet conceivably poses a threat to the health and safety of workers and the environment. There are international and national regulations that govern ship-recycling activities to ensure that the hazardous impacts of the industry are minimized. We investigated the disparity between current ship-breaking practices in Indonesia and the requirements of related international and national regulations, with the findings intended for use as a stepping stone to proposing a strategy to establish a green and sustainable ship-recycling industry. A benchmark study of the world’s leading ship-recycling countries was conducted, and a gap analysis was performed by comparing existing international and national regulations with current ship-breaking practices in Indonesia. We i...
Sustainable Development and Innovations in Marine Technologies, 2019
When ships reached the end of their operational life, they are required to be dismantled in a saf... more When ships reached the end of their operational life, they are required to be dismantled in a safe and environmentally friendly manner. However, current ship recycling process in Indonesia is not compliant with the standard of existing rules and is not environmentally friendly and dangerous to the safety of the workers. In this paper, a comprehensive gap analysis was conducted through the comparison of the current process with the standard of international regulations from health and safety perspective. The analysis is based on the expert judgement technique that combined the field observation and questionnaire to assess the current process as well as to identify the process related gaps compared to the current regulations. This has been achieved through these major steps: (1) Identification of ship recycling process, (2) Established an expert team, (3) Development of ideal process (4) Field observation (5) Development of observed process flow (6) Identify the gap.
Transportation research procedia, 2018
Today, the ship recycling industry is going through a transitional phase in order to comply with ... more Today, the ship recycling industry is going through a transitional phase in order to comply with the new regulations which are forcing ship recycling yard owners to invest and improve yards. One way to compensate these investments is to optimise the current process and increase the efficiency; however, in the literature there is a gap on detailed approach to optimization of ship recycling processes. This paper aims to develop a framework for the ship recycling industry in order to improve and optimise the ship recycling procedures. This aim is achieved through preparation of simulation models in the ARENA software with current and alternatives practices/processes for every step of ship recycling. The simulation framework developed has been applied for a ship recycling yard in EU as a case study. Bottlenecks in the current process were identified and through simulations alternative solutions were considered to optimise the process. Potential improvements for the yard with simulation ...
Today, the ship recycling industry is going through a transitional phase in order to comply with ... more Today, the ship recycling industry is going through a transitional phase in order to comply with the new regulations which are forcing ship recycling yard owners to invest and improve yards. One way to compensate these investments is to optimise the current process and increase the efficiency; however, in the literature there is a gap on detailed approach to optimization of ship recycling processes. This paper aims to develop a framework for the ship recycling industry in order to improve and optimise the ship recycling procedures. This aim is achieved through preparation of simulation models in the ARENA software with current and alternatives practices/processes for every step of ship recycling. The simulation framework developed has been applied for a ship recycling yard in EU as a case study. Bottlenecks in the current process were identified and through simulations alternative solutions were considered to optimise the process. Potential improvements for the yard with simulation ...
Ships and Offshore Structures, 2020
ABSTRACT The operational costs of ship recycling yards will increase since the new regulations re... more ABSTRACT The operational costs of ship recycling yards will increase since the new regulations require more stringent standards for preserving the occupational and environmental health and safety of the people involved in recycling activities. Improvement of the current operational procedures and current levels of productivity will be critical to survive in a competitive industry dominated by low-cost substandard yards. The main aim of this study is to increase the productivity of the yards through the improvement of processes. In this study, cutting operation in the secondary zone is investigated using discrete event simulation. Alternative cutting technologies have been tested in a simulation to assess their impact on production performance and operating costs. This study shows that plasma cutting is a good alternative to oxyfuel cutting. Overall research conducted in this study is significant contribution to the literature as a novel approach for modelling processes and for the implementation of cutting technologies.
Ocean Engineering, Oct 1, 2023
Journal of Shipping and Trade
Cargo conveyance onboard dry bulk carriers is contemporarily often affiliated to preoperational w... more Cargo conveyance onboard dry bulk carriers is contemporarily often affiliated to preoperational waiting times, which may affect the income situation of stakeholders and the sustainability of the sector. Therefore, repetitively occurring waiting problems, potentially paired with port congestion phenomena, indicating that just in time (JIT) arrival potential for a distinct or a combination of reasons has not been realised, can be frequently identified. Undesired increment of waiting times and development of port congestion is frequently responded to by an array of measures. JIT arrival concepts, vessel arrival systems (VAS) and virtual arrival (VA) agreements thereby do not strive to eliminate waiting times but facilitate their sensible transformation into additional navigation time. In practice, VAS applications may, however, only enfold their inherent sustainability potential within closely defined delimitations. At the same time, JIT mechanisms and VA agreements may lack acceptance...
Ocean Engineering
Ship dismantling is the recommended recycling solution for the end of a ship's life, but ... more Ship dismantling is the recommended recycling solution for the end of a ship's life, but the process is not free of occupational risk. Despite proper regulations, there are underlying chemical and physical hazards, mainly due to the cutting of steel parts, which is the core of the recycling process. The overall aim of this research study is to determine, in two case study examples, the ship recycling workers' potential occupational exposure by inhalation of chemical agents generated by the torch cutting process of coated and de-coated steel. This was carried out specifically through (i) monitoring and measuring ship recycling workers' local environment for the inhalable (total dust) and respirable (fine dust) fractions during their working operations, (ii) analysing the heavy metal content of the dust and (iii) calculating and comparing this against occupational exposure limits, (iv) comparing de-coating operations with cutting of coated and de-coated steel. Results of this study show that without further mitigation workers involved in torch cutting processes are at high risk of exposure to heavy metals by inhalation as these are exceeding the norms defined by regulatory bodies.
Journal of Cleaner Production
Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2014Thesis (M.Sc.) ... more Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2014Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2014Bu çalışmada, katı cisimlerin suya girişi problemi üzerinde etkisi olan faktörler yeni tasarlanan deney sistemiyle incelenmiştir. Deney sisteminde 1.3 metre boyunda 0.6 metre genişliğinde ve 0.6 metre derinliğinde bir tank kullanılmıştır. Farklı kesit açılarına sahip dört üçgen prizma bloklar farklı yüksekliklerden ve farklı ağırlıklarla sakin su yüzeyine serbest düşürülmüştür. Kesit açıları 15°, 30°, 45°, 60° olan bloklar 4 kg, 6 kg, 8 kg ağırlık kombinasyonları ile 0.3 m, 0.6 m, 0.9 m yüksekliklerden düşürülmüştür. Ağırlık değişimleri ile farklı deplasman kombinasyonları denenmiş, düşme yüksekliği değişimi ile de farklı deniz durumlarında yüksek hızlı teknelerin davranışı ve can filikalarının farklı yükseklikteki gemi veya platformlardan suya düşüşünün modellenmesi amaçlanmıştır. Çarpma anında blokların maruz ka...
1st International Conference on the Stability and Safety of Ships and Ocean Vehicles, Jun 7, 2021
Ship recycling process is a tricky business and accepted as one of the most hazardous working env... more Ship recycling process is a tricky business and accepted as one of the most hazardous working environments if not done correctly. Ship recycling has many severe risks and most of the times it is lacking proper planning. Due to its complex procedure and the risks involved, there is a need of structured and guided way of approaching job tasks, and in addition, incorporating hazard identification and risk management for various experts is needed. A web base structured risk assessment tool dedicated to various professions related to ship recycling is developed. In this paper, the principles behind this web-based tool ‘Three Step Online tool’ are introduced, and its methodology is explained. Moreover, a case study of a ship recycling job task in Indonesia is presented. The result shows that this online based tool has been well received by multiple experts such as occupational health & safety experts and ship recyclers
Marine pollution bulletin, Apr 1, 2024
Ship recycling has gained significant importance in recent years due to the growing awareness of ... more Ship recycling has gained significant importance in recent years due to the growing awareness of environmental concerns and the need for sustainable practices within the maritime industry. As vessels reach the end of their operational life, proper recycling methods are crucial to mitigate environmental impacts and promote resource conservation. With an increasing number of ships being decommissioned annually, there has been a growing interest and emphasis on developing efficient and eco-friendly ship recycling practices worldwide. This article presents a systematic literature review and bibliometric analysis of 228 studies on ship recycling indexed in Scopus. Employing the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) methodology for its robustness in comprehensive literature analysis, this review uncovers key insights into prominent countries, authors, journals, collaborations, topics, and historical trends in ship recycling research, thereby extending the scope of previous reviews. Notably, major contributions from Turkey, India, Bangladesh, the USA, and China focus on environmental impact studies, reflecting urgent global sustainability concerns. The review discusses commonly adopted methodologies such as Life Cycle Assessment and Elemental Analysis, shedding light on their application in this field. Through thematic analysis across 8 categories, future research pathways are identified, highlighting crucial areas such as continuous environmental monitoring, innovative renewable energy extraction from end-of-life vessels, and the need for human factors in ship recycling. This comprehensive synthesis of existing knowledge and identification of emergent research needs and opportunities serve as a foundational resource for impactful future research and informed policymaking, particularly in aligning with global environmental and sustainability goals. Researchers, policymakers and other stakeholders in maritime safety and environmental sustainability may find the knowledge gained from this systematic literature review insightful.
Sustainability, Jan 3, 2024
International Conference Marine Technology, Oct 16, 2020
The study is aimed to design a ship recycling yard in Indonesia which comply to the requirements ... more The study is aimed to design a ship recycling yard in Indonesia which comply to the requirements stated in the Hong Kong Convention for the Safe and Environmentally Sound Recycling of Ships with the capacity up to 30,000 dwt. The study was conducted based on information gathered from field and literature survey. It is estimated that there are approximately 1,400 ships in Indonesia have reached more than 25 years, which need to be replaced by the new ones and will be sent for recycling, but there is not any ship recycling yard that is comply to the Hong Kong Convention requirements, and most of the ship recycling activities are carried out in traditional ways. It is expected that the proposed design will become a reference for ship recycling industry in Indonesia
Journal of Ship Production and Design
_ A shipyard located in Yalova, Turkey, with an annual processing capacity of 50,000 tons of stee... more _ A shipyard located in Yalova, Turkey, with an annual processing capacity of 50,000 tons of steel, is studied to improve the layout to increase the production efficiency. The material and personnel traffic inside the shipyard is complex, considering the nature of the shipyards. Therefore, an adjacency-based optimization procedure has been adopted in this study since this procedure allows quantitative evaluation of these aspects. Systematic layout planning (SLP) and graph-theoretical approach were used to generate 12 alternative layouts. Then, the best alternative layout was selected using the efficiency rate method. This study demonstrates the use of SLP and graphic-theoretical approach in a maritime context and utilizes the efficiency rate method to compare the alternative layouts, which are between 48.91% and 73.91% efficiencies, respectively. This study is a novel contribution to the literature in terms of demonstrating this methodology for shipbuilding applications, and practical applications for the industry can improve the industry to improve the efficiency of their operations. Introduction In parallel with the increase in global economic growth and technological developments, new ships are needed for marine transportation, energy, security, fishing, etc. This need triggers a globally competitive environment for the production of vessels in a cheap and efficient manner, which directly affects the shipbuilding industry and shipyards (Odabasi 1993). The alignment of the production departments in the shipyard is critical for productivity. The shipyard should be optimized and designed as an efficient system to minimize unnecessary material and personnel traffic. On the other hand, the majority of shipyards are poorly designed. Facility layout deals with the placement of the production departments based on their relative relationship, and facility layout design aims to streamline the workflow and increase productivity (Muther & Hales 2015). Dixit et al. (2020) describe the facility layout as a physical arrangement of departments with a focus on workflow across the system to achieve highest operational efficiency at the lowest cost. Facilities layout is fundamental to shipyard efficiency. To address this gap in the literature, this paper examines the application of systematic layout planning (SLP) and graph-theoretical approach to the optimization of a specific facility layout.
Gemi ve Deniz Teknolojisi, 2021
Tüm mühendislik alanlarında olduğu gibi gemi inşaatı ve gemi makineleri mühendisliğinde de karar ... more Tüm mühendislik alanlarında olduğu gibi gemi inşaatı ve gemi makineleri mühendisliğinde de karar verme süreçleri önemlidir. Karar vermenin en çok uygulanan dalı ise, nitel ve nicel faktörleri birlikte içeren, çok kriterli karar vermedir. Bu çalışmada, çok kriterli karar verme (MCDM) yöntemlerinin gemi inşaatı ve gemi makineleri mühendisliğinde uygulamaları 21 Türkçe lisansüstü tezi, 21 İngilizce uluslararası makale ile incelenmiştir. En sık başvurulan MCDM yönteminin, ilk önce AHP ve sonrasında TOPSIS olduğu, en sık kullanım amacının ise ilk önce gemi sistemleri seçimi ve sonrasında gemi dizaynı olduğu tespit edilmiştir. Yöneylem araştırmasının bir alt alanı olan MCDM, konuya yeni giriş yapmak isteyen gemi inşaatı ve gemi makineleri mühendisleri için sunulmuştur. Bu çalışma ile araştırmacılara, tespit ettikleri özgün MCDM problemlerine, özgün MCDM yaklaşımları getirmelerine yardımcı olmak amaçlanmıştır.
International Conference Marine Technology, Oct 16, 2020
The study is aimed to design a ship recycling yard in Indonesia which comply to the requirements ... more The study is aimed to design a ship recycling yard in Indonesia which comply to the requirements stated in the Hong Kong Convention for the Safe and Environmentally Sound Recycling of Ships with the capacity up to 30,000 dwt. The study was conducted based on information gathered from field and literature survey. It is estimated that there are approximately 1,400 ships in Indonesia have reached more than 25 years, which need to be replaced by the new ones and will be sent for recycling, but there is not any ship recycling yard that is comply to the Hong Kong Convention requirements, and most of the ship recycling activities are carried out in traditional ways. It is expected that the proposed design will become a reference for ship recycling industry in Indonesia
Ships and Offshore Structures, 2022
Recycling, 2021
Ship recycling is gaining attention in Indonesia due to the increase in end-of-life ships and une... more Ship recycling is gaining attention in Indonesia due to the increase in end-of-life ships and uneconomical nationally flagged ships, and is considered a prospective source of economic development and employment opportunity, and yet conceivably poses a threat to the health and safety of workers and the environment. There are international and national regulations that govern ship-recycling activities to ensure that the hazardous impacts of the industry are minimized. We investigated the disparity between current ship-breaking practices in Indonesia and the requirements of related international and national regulations, with the findings intended for use as a stepping stone to proposing a strategy to establish a green and sustainable ship-recycling industry. A benchmark study of the world’s leading ship-recycling countries was conducted, and a gap analysis was performed by comparing existing international and national regulations with current ship-breaking practices in Indonesia. We i...
Sustainable Development and Innovations in Marine Technologies, 2019
When ships reached the end of their operational life, they are required to be dismantled in a saf... more When ships reached the end of their operational life, they are required to be dismantled in a safe and environmentally friendly manner. However, current ship recycling process in Indonesia is not compliant with the standard of existing rules and is not environmentally friendly and dangerous to the safety of the workers. In this paper, a comprehensive gap analysis was conducted through the comparison of the current process with the standard of international regulations from health and safety perspective. The analysis is based on the expert judgement technique that combined the field observation and questionnaire to assess the current process as well as to identify the process related gaps compared to the current regulations. This has been achieved through these major steps: (1) Identification of ship recycling process, (2) Established an expert team, (3) Development of ideal process (4) Field observation (5) Development of observed process flow (6) Identify the gap.
Transportation research procedia, 2018
Today, the ship recycling industry is going through a transitional phase in order to comply with ... more Today, the ship recycling industry is going through a transitional phase in order to comply with the new regulations which are forcing ship recycling yard owners to invest and improve yards. One way to compensate these investments is to optimise the current process and increase the efficiency; however, in the literature there is a gap on detailed approach to optimization of ship recycling processes. This paper aims to develop a framework for the ship recycling industry in order to improve and optimise the ship recycling procedures. This aim is achieved through preparation of simulation models in the ARENA software with current and alternatives practices/processes for every step of ship recycling. The simulation framework developed has been applied for a ship recycling yard in EU as a case study. Bottlenecks in the current process were identified and through simulations alternative solutions were considered to optimise the process. Potential improvements for the yard with simulation ...
Today, the ship recycling industry is going through a transitional phase in order to comply with ... more Today, the ship recycling industry is going through a transitional phase in order to comply with the new regulations which are forcing ship recycling yard owners to invest and improve yards. One way to compensate these investments is to optimise the current process and increase the efficiency; however, in the literature there is a gap on detailed approach to optimization of ship recycling processes. This paper aims to develop a framework for the ship recycling industry in order to improve and optimise the ship recycling procedures. This aim is achieved through preparation of simulation models in the ARENA software with current and alternatives practices/processes for every step of ship recycling. The simulation framework developed has been applied for a ship recycling yard in EU as a case study. Bottlenecks in the current process were identified and through simulations alternative solutions were considered to optimise the process. Potential improvements for the yard with simulation ...
Ships and Offshore Structures, 2020
ABSTRACT The operational costs of ship recycling yards will increase since the new regulations re... more ABSTRACT The operational costs of ship recycling yards will increase since the new regulations require more stringent standards for preserving the occupational and environmental health and safety of the people involved in recycling activities. Improvement of the current operational procedures and current levels of productivity will be critical to survive in a competitive industry dominated by low-cost substandard yards. The main aim of this study is to increase the productivity of the yards through the improvement of processes. In this study, cutting operation in the secondary zone is investigated using discrete event simulation. Alternative cutting technologies have been tested in a simulation to assess their impact on production performance and operating costs. This study shows that plasma cutting is a good alternative to oxyfuel cutting. Overall research conducted in this study is significant contribution to the literature as a novel approach for modelling processes and for the implementation of cutting technologies.