Journal of International Maritime Safety, Environmental Affairs, and Shipping最新文献_第3页

Anomaly detection model of small-scaled ship for maritime autonomous surface ships’ operation

Journal of International Maritime Safety, Environmental Affairs, and Shipping Pub Date : 2022-10-02 DOI: 10.1080/25725084.2022.2154116

W. Tyasayumranani, Tae-Hyun Hwang, T. Hwang, Ik-Hyun Youn

引用次数: 2

Comparative safety assessment of LNG re-liquefaction systems applied on LNG carriers LNG运输船LNG再液化系统安全性比较评价

Journal of International Maritime Safety, Environmental Affairs, and Shipping Pub Date : 2022-10-02 DOI: 10.1080/25725084.2022.2147761

N. Kapellas, B. Jeong

{"title":"Comparative safety assessment of LNG re-liquefaction systems applied on LNG carriers","authors":"N. Kapellas, B. Jeong","doi":"10.1080/25725084.2022.2147761","DOIUrl":"https://doi.org/10.1080/25725084.2022.2147761","url":null,"abstract":"ABSTRACT This research was aimed to evaluate the safety of the LNG cargo compressor room against unwanted gas leakage from two different re-liquefaction systems applicable for an LNG carrier: 1) the Partial (Full) Re-liquefaction System (P(F)RS) and 2) the combination of Partial Re-liquefaction System and Mixed Refrigerant Re-liquefaction system (PRS+MRS). To achieve this goal, quantitative risk assessment was carried out with the integration of system hierarchical modelling, statistical analysis, and CFD simulation. The frequency of initial leakages, occurring to each component of the re-liquefaction systems, was analysed, whereas for the consequence analysis, a CFD program of PyroSim was employed to simulate the gas dispersion in the confined room fitted with mechanical ventilation systems. In addition, various ventilation capacities were investigated with changes in their allocations in the room in order to determine these parametric influences on the results. The risk level of re-liquefaction systems was determined in a quantitative way. Research results clearly presented the importance of the proper arrangement of the ventilation systems. The risk levels were estimated at 5.6 E-3/year for P(F)RS whereas about 9.6 E-3/year for the PRS+MRS in consideration of current regulations. However, the increase in the ventilation capacity was found to reduce the risk levels. The research findings are highly believed to offer meaningful guidance into future safety regulatory frameworks.","PeriodicalId":261809,"journal":{"name":"Journal of International Maritime Safety, Environmental Affairs, and Shipping","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114721144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Introduction of the International Maritime Policy Trend on Underwater Radiated Noise from Shipping 船舶水下辐射噪声国际海事政策趋势介绍

Journal of International Maritime Safety, Environmental Affairs, and Shipping Pub Date : 2022-10-02 DOI: 10.1080/25725084.2022.2152991

T. Joung, Dae-jung Hwang, Jung-Gyul Shin

{"title":"An Introduction of the International Maritime Policy Trend on Underwater Radiated Noise from Shipping","authors":"T. Joung, Dae-jung Hwang, Jung-Gyul Shin","doi":"10.1080/25725084.2022.2152991","DOIUrl":"https://doi.org/10.1080/25725084.2022.2152991","url":null,"abstract":"ABSTRACT In this paper, the discussion trend on Underwater Radiated Noise (URN) from Ships being discussed at the International Maritime Organization (IMO) meeting was shared. In some countries, such as Canada and United States, marine mammals such as whales are severely affected by URN from Ships and Offshore plant facilities. In relation to the regulation of URN, internationally agreed regulations such as greenhouse gas reduction from Ships have not been developed, but awareness of seriousness of the URN is gradually increasing. Accordingly, international policy trends and technology trends for URN from Shipping, which are being dealt with in the IMO meeting, were reviewed. The technology for the URN is divided into measurement and reduction, and the reduction of propeller cavitation is being dealt with as a major technical element. Currently, the actual regulation to reduce the URN from ships is the “restriction on the speed of a ship” implemented at the individual national level. In order to develop coherent international rules and regulations, methods for measuring URN and technologies for URN reduction should be continuously developed.","PeriodicalId":261809,"journal":{"name":"Journal of International Maritime Safety, Environmental Affairs, and Shipping","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121858772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study on improving the efficiency of non-isolated buck-boost bidirectional DC–DC converter 提高非隔离降压升压双向DC-DC变换器效率的研究

Journal of International Maritime Safety, Environmental Affairs, and Shipping Pub Date : 2022-10-02 DOI: 10.1080/25725084.2022.2136866

Hyeon-min Jeon, C. Ji, Jae-Won Hur

{"title":"A study on improving the efficiency of non-isolated buck-boost bidirectional DC–DC converter","authors":"Hyeon-min Jeon, C. Ji, Jae-Won Hur","doi":"10.1080/25725084.2022.2136866","DOIUrl":"https://doi.org/10.1080/25725084.2022.2136866","url":null,"abstract":"ABSTRACT In battery-based systems such as hybrid electric propulsion system for ships that use electric propulsion and DC grid, bidirectional converters are often used as interfaces between high-voltage power sources and low-voltage batteries for the purpose of storing excess energy and the fields of application for bidirectional converters are steadily expanding. This study proposes a new bidirectional converter with a high voltage conversion rate and low switch voltage stress. The proposed converter allows current to flow between modules by adding only one capacitor compared to a conventional bidirectional converter. To check the effectiveness of the proposed method, PSIM software by Powersim co. Ltd. was used to perform simulation tests. It was confirmed that the high voltage conversion rate was 4 times that of a conventional bidirectional converter in step-up mode and 1/4 that of a conventional bidirectional converter in step-down mode. Therefore, low-voltage components, such as MOSFETs, GTOs, etc., can be applied in the DC–DC converters thanks to the 1/4 voltage that is required in each switching time.","PeriodicalId":261809,"journal":{"name":"Journal of International Maritime Safety, Environmental Affairs, and Shipping","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131550476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Risk on design & installation of drag embedment anchor (DEA) for floating offshore wind turbine (FOWT) 海上浮式风力发电机组拖曳预埋锚(DEA)的设计与安装风险

Journal of International Maritime Safety, Environmental Affairs, and Shipping Pub Date : 2022-10-02 DOI: 10.1080/25725084.2022.2154931

Sang H. Yoon, T. Joung

引用次数: 1

Decarbonization Trend in International Shipping Sector 国际航运业的脱碳趋势

Journal of International Maritime Safety, Environmental Affairs, and Shipping Pub Date : 2022-10-02 DOI: 10.1080/25725084.2022.2156155

B. Jeong, Mingyu Kim, Chybyung Park

引用次数: 3

Is LNG the solution for decarbonised shipping? LNG是脱碳航运的解决方案吗?

Journal of International Maritime Safety, Environmental Affairs, and Shipping Pub Date : 2022-10-02 DOI: 10.1080/25725084.2022.2142428

N. Agarwala

{"title":"Is LNG the solution for decarbonised shipping?","authors":"N. Agarwala","doi":"10.1080/25725084.2022.2142428","DOIUrl":"https://doi.org/10.1080/25725084.2022.2142428","url":null,"abstract":"ABSTRACT The Paris Agreement has exerted tremendous pressure on the maritime industry to reduce carbon emissions. Since then, the industry has experimented with numerous technological, operational and incentive methods. Even though todate no concrete method or technology has proven to be a potent decarbonisation candidate, using LNG as a bunker fuel has shown some positive prospects in the reduction of atmospheric pollution. While the induction of LNG has been driven by a combination of environmental benefits and attractive fuel prices, especially for new construction, its actual use has received mixed acceptance. These mixed reactions have created a general sense of uncertainty about the benefits LNG can provide towards decarbonisation that has resulted in unease within the maritime shipping industry. Using desk-based qualitative research, the author analyses LNG as a possible fuel to achieve decarbonisation by the maritime shipping industry. In doing so, the evolving controversies associated with acceptance of LNG as a decarbonising fuel to meet the targets of the Paris Agreement have been analysed. Eventually, the future of LNG as an alternate fuel for the maritime shipping industry is evaluated and the role LNG can play as a future bunker fuel for decarbonisation of the maritime shipping industry is discussed.","PeriodicalId":261809,"journal":{"name":"Journal of International Maritime Safety, Environmental Affairs, and Shipping","volume":"87 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131609004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A study on the application of hybrid propulsion system of small size fishing vessels in South Korea 韩国小型渔船混合动力推进系统应用研究

Journal of International Maritime Safety, Environmental Affairs, and Shipping Pub Date : 2022-10-02 DOI: 10.1080/25725084.2022.2149176

Jun-Sick Hwang, Jong-Shin Kim, Hyeon-min Jeon, Seongwan Kim

引用次数: 0

Ocean carrier alliances and the impact on container freight rate 海洋承运人联盟及其对集装箱运价的影响

Journal of International Maritime Safety, Environmental Affairs, and Shipping Pub Date : 2022-07-03 DOI: 10.1080/25725084.2022.2125713

Paul C. Ezinna, Emmanuel E. Nwanmuoh, Uzochukwu I. Ozumba, Josiah Ogbuka

引用次数: 0

Evacuation of ships: Discovering the mishaps behind the casualties 船舶疏散:发现伤亡背后的不幸

Journal of International Maritime Safety, Environmental Affairs, and Shipping Pub Date : 2022-07-03 DOI: 10.1080/25725084.2022.2129200

Antonios Andreadakis, D. Dalaklis

{"title":"Evacuation of ships: Discovering the mishaps behind the casualties","authors":"Antonios Andreadakis, D. Dalaklis","doi":"10.1080/25725084.2022.2129200","DOIUrl":"https://doi.org/10.1080/25725084.2022.2129200","url":null,"abstract":"ABSTRACT Safety of crew and passengers has always been a very critical issue for the shipping industry. At the beginning of the previous century, the tragic event of RMS Titanic sinking, can be considered as the triggering event for the introduction of the main regulatory intervention by the International Maritime Organization (IMO) in terms of safety: The International Convention for the Safety of Life at Sea (SOLAS). Since that point in time, with the aim to improve the procedures followed during a ship evacuation situation, numerous regulations have been adopted. Unfortunately, especially in relation to large passenger vessels and cruise ships, abandonment procedures remain today largely inefficient; in numerous occasions, an abandon ship situation has resulted into fatalities that were somehow considered avoidable, with the case of Costa Concordia standing out as an example. This paper is attempting to identify the main reasons and conditions behind the mishaps during the evacuation of modern passenger/cruise vessels. The purpose is to provide an understanding and shed light to the inefficiencies existing in the currently followed procedures. Furthermore, the psychological impact that is caused to passengers and crew in chaotic and life-threatening conditions, as the aforementioned situation, is discussed.","PeriodicalId":261809,"journal":{"name":"Journal of International Maritime Safety, Environmental Affairs, and Shipping","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128238187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2