Wyniki wyszukiwania - BazTech

1

Assessment of Factors Contributing to the Risks of Cargo Liquefication Accident in Bulk Carriers (A Qualitative Approach)

Nwigwe T., Minami K.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2022

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Vol. 16 No. 1

149--152

EN

Liquidation of cargo in bulk carrier has been identifying as a major hazard affecting the bulk carrier shipping and has resulted to several loss of lives. This study assesses the liquidation problem in bulk carrier shipping, it also discusses the mechanisms by which cargo liquefaction occurs in bulk carrier and the factors influencing the risks of occurrence, based on a qualitative approach. Based on the findings and survey, the unsafe storage condition, poor compliance with the testing and certification of cargoes, poor loading plan, have been identify as some of the root casual factors influencing the risk of liquidation problem in bulk carrier. This study will contribute to increasing the awareness and understanding of the problem of cargo liquefaction and will facilitate the development of regulations that reflects the realities of this problem and assist in the development of future recommendations for mitigation plans against the liquidation problem in bulk carrier.

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A comparison study between advance transfer technique and advance transfer mathematical model using bulk carrier ship: cross-track distance validation by percentage change and mann whitney u test

Kamis A. S., Ahmad Fuad A. S.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2022

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Vol. 16 No. 3

541--551

EN

One of the methods of efficient course alteration is through the accurate identification of the WOP by ATT. ATT is widely used by mariners worldwide, and recently, the technique has been restructured and enhanced into ATMM. To prove the efficacy of ATMM over ATT, a few types of ships have been used to carry out the manoeuvring analysis. This study extends the analysis by using a bulk carrier ship. A ship simulator was used for a manoeuvring simulation study, which was carried out to verify the differences between these two methods. Throughout the manoeuvring simulation study, XTD data for each simulation was monitored and verified by XTL compliance, percentage variation, and the Wilcoxon-Mann Whitney U Test via IBM SPSS. It was found that the ATMM can produce a significantly improved WOP compared to ATT and is suitable to be used onboard a bulk carrier ship. This research's finding is expected to contribute as evidence to strengthen ATMM's efficiency so that it can be accepted as an ECDIS algorithm for ship navigation.

3

Analysis of ratios of propulsion energy demand for transport by bulk carriers

Polanowski Stanisław

Journal of KONES

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2019

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Vol. 26, No. 3

173--180

EN

The article presents the results of calculations and analysis of the eM ratio of the propulsion energy consumption per the nautical mile and the eMt ratio of the propulsion energy demand for the transport of 1-ton cargo per the nautical mile for bulk carriers. The relationship between eM and eMt indicators with the EIV (Estimated Index Value) ratio is shown. The output data for the determination of eM and eMt indicators was taken from the quoted MAN publication, reading (reproducing) the values of power, velocity v and DWT tonnage from the charts included in this publication. Calculations and analyses were made for velocity v between 11-15 knots and for DWT from 5-400 kt (kilo tonnes). The graphs of eM and eMt ratios in the function of speed v and load capacity DWT are presented. Using the stepwise method of least squares, models of statistical dependence of indicators on velocity v and load capacity of bulk carriers were developed. They were based on generalized polynomials with integer exponents. Derivatives deM / dv and deMt / dv and derivatives deM / dDWT and deMt / dDWT were determined. The main observations resulting from the conducted analyses are observed with the increase of DWT (within the range of 80-100 kt) a significant decrease in the value of the eM index. For DWT values> 100 kt, the decrease in eMt is slow − eMt asymptotically tends to a constant value. The results of the analyses carried out can be used at the stage of designing the transport capacity (tonnage) and nominal speed of the ship as well as selection of ship tonnage and travel speed in a given transport situation.

4

Estimation of undesirable events in operation of bulk carriers

Monieta J.

Journal of KONES

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2013

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Vol. 20, No. 2

291--297

EN

This paper describes the introduced results of researches of undesirable events at one shipowner for a period of twelve years. The study included mostly merchant vessels bulk carriers and their significant objects. The ships were decomposed on functional systems and elements also divided them into of the navigation and machinery part. There was carried out a quantitative and economics analysis. In the economic analysis have been exchange rates accounted. Attempted classification of the causes of the event and its participation in material losses incurred. These events are also a threat to human life and health as well as the natural environment. One showed on methods and means of diagnostics as manner of limitation their sizes and results. The results should be useful in the design of diagnostic experiments to select the objects that should be subject monitored. The larges losses of adverse events were initiated in the functional systems: navigation, main drive and cargo. The most often adverse events are collisions. The most expensive vessel objects in the engine room proved to be reciprocating internal combustion engines for main propulsion and auxiliary. The investigations were conducted for all types of reciprocating internal combustion engines mounted on the test vessels. Combustion engines were operated under different external and internal conditions and were feed distillate and residual fuel oils.

5

Ocena czasu eksploatacji spalinowych silników okrętowych typu 6AL20/24

Monieta J.

Zeszyty Naukowe / Wyższa Szkoła Morska w Szczecinie

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2002

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nr 66

307-315

PL

Podano wyniki oceny procesu eksploatacji silników napędu prądnic typu 6AL20/24 trzech typów masowców. Wyodrębniono 4 stany procesu eksploatacji i skupiono się na czasie użytkowania efektywnego. Dla tego stanu wyznaczono wybrane wskaźniki takie jak: średni czas użytkowania efektywnego w ciągu doby, miesiąca, roku oraz wskaźnik użytkowania efektywnego.

EN

The paper contains the results of evaluation of the operating process of auxiliary engines type 6AL20/24 of three bulk carrier types. Four states of the operating process have been distinguished and focus has been put on effective working life. Some indicators have been determined for this state. The indicators include daily, monthly and yearly mean time of effective use as well as the effective working life indicator.

6

Stan diagnostyki technicznej siłowni okrętowych a niezawodność eksploatacyjna i bezpieczeństwo masowców

Monieta J

Problemy Eksploatacji

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2001

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nr 3

167-174

PL

Praca zawiera analizę istniejących systemów diagnostycznych obiektów maszynowych statków w przedsiębiorstwie eksploatującym flotę handlową. Zawiera również obowiązujące wymogi formalnoprawne w sferze organizacji nadzoru statków i zarządzania bezpieczeństwem.

EN

The paper contains of analysis of diagnostic systems of motor-ships. Paper contains too formal-legal requirements in sphere organisation supervision of ships and management of safety. In spite of present technical-organisation was frequented occurrents the undesirable events of products of technical, natural environment and man. This events was caused large material losses of shipowners.