Priority Assessment of Key Factors of IMO-MSC/Circular.834 for Ship Engine Room Safety and Efficiency Based on Human Aspects

2021 ◽  
pp. 1-8
Author(s):  
Hasan Ölmez ◽  
Selim Bastürk ◽  
Köksal Colak
Keyword(s):  
Working Conditions ◽  
Complex Structure ◽  
Multiple Criteria Decision Making ◽  
Maritime Transportation ◽  
International Maritime Organization ◽  
Human Aspects ◽  
Engine Room ◽  
Room Design ◽  
Priority Assessment ◽  
Optimum Working

Abstract International Maritime Organization (IMO) has published technical circular (MSC/Circular. 834) including nonmandatory guidelines with five main criteria about engine room layout, design, and arrangement. The purpose of this study is to present the most important priority criteria of seafarers about engine room design according to the criteria from IMO MSC/Circular.834 guidelines. Since there are no obligations, the priority and importance of these criteria are not clearly emphasized. Therefore, the determination of seafarers’ priorities for arrangement in terms of safety and efficiency become important to make decision. For this, fuzzy Analytic Hierarchy Process (AHP) technique, which is one of the most used fuzzy Multiple Criteria Decision Making (MCDM)methods is employed. Introduction Maritime transportation, known for oldest and widespread transportation around the world, with 11 billion tons weight and 80% rate of world trade volume (UNCTAD 2019). Maritime transportation has many components and one of the most important and effective parts of these components are ships and seafarers. Because of the difficulty of ship conditions, ships should be present optimum working conditions for seafarers in order to achieve effective and safe operations on board. At the present time, there are previous studies about the difficulty of working studies on board. It is a scientific and cultural fact that seafarers are under higher risk of working conditions comparing to other jobs (Bloor et al. 2000; Havold 2005; Hetherington et al. 2006; Mallam et al. 2015). Due to this reason, International Maritime Organization (IMO) has made various regulations for years in order to improve seafarers’ safety and efficiency on board. One of the goals of these regulations is to design optimum working conditions on board for seafarers. Based on complex structure and having various danger conditions, engine room design is considerable to ensure safety and efficiency for engine room department seafarers.

OPTIMUM WORKING CONDITIONS FOR THE EYE

1941 ◽  
Vol 18 (7) ◽  
pp. 338
Author(s):  
C E Ferree ◽  
G Rand
Keyword(s):  
Working Conditions ◽  
Optimum Working

scholarly journals Influence of Microwave Incinerated Rice Husk Ash on Hydration of Foamed Concrete

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
R. Bayuaji ◽  
M. F. Nuruddin
Keyword(s):  
Working Conditions ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Taguchi Approach ◽  
Loss On Ignition ◽  
Degree Of Hydration ◽  
Concrete Mixtures ◽  
Foamed Concrete ◽  
Optimum Working ◽  
Water Contents

This research explains the results of an investigation carried out to understand the influence of a microwave incinerated rice husk ash (MIRHA) powder on foamed concrete (FC) hydration. The experimental work was designed using the Taguchi approach. This method was selected to have a target for the optimum working conditions of the parameter that affects some physical properties of concrete mixtures. The loss on ignition (LOI) method was used to establish the nonevaporable water (wn) content at all selected ages of hydration. It was observed that the MIRHA powder showed lower nonevaporable water contents than the normal FC, indicating that MIRHA powder facilitated enhancement in FC hydration. The optimum FC properties were achieved at 10% MIRHA composition as proven from the highest compressive strength. This level corresponds to the highest values in change in nonevaporable water and degree of hydration.

A Fuzzy DEMATAL Model Proposal for the Cause and Effect of the Fault Occuring in the Auxiliary Systems of the Ships' Main Engine

2018 ◽  
Vol Vol 160 (A2) ◽  
Author(s):  
A Balin ◽  
H Demirel ◽  
E Celik ◽  
F Alarcin
Keyword(s):  
Decision Making ◽  
Error Detection ◽  
Detection System ◽  
Causal Effect ◽  
Complex Structure ◽  
Fuel Oil ◽  
Fuzzy Dematel ◽  
Engine Room ◽  
Engine Failure ◽  
Main Engine

The ship engine room has a structure that meets a number of needs related to administrative conditions. Even if a simple mechanical error is considered to be the addition of human errors into the complex structure of the engine room, it can lead to undetected loss. How the causes and effects of the detected faults affect the system is as important as an effective fault detection system to detect the fault and take immediate action against any possible engine failure. This study reveals the causes of problems occurring in the main engine auxiliary systems including cooling, lubricating, cooling oil and fuel systems, and the extent of these problems affecting the system. While the Decision Making Trial and Evaluation Laboratory supports to identify and analyze the error detection of auxiliary systems with respect to causal effect relation diagram, fuzzy sets deal with the uncertainty in decision-making and human judgements through the DEMATEL. Therefore, fuzzy DEMATEL approach is applied to examine the causes and the weights of the faults and their relation to each other in the auxiliary systems. When we look at the result of the proposed approach, fuel oil pump failures has more impact on the all system and air cooler problems has the second highest place among the all errors.

Study on Trispectrum Characteristics of MR Damper in Vibration Processes

2011 ◽  
Vol 211-212 ◽  
pp. 285-289
Author(s):  
Fu Sen Wu ◽  
Yi Jian Huang ◽  
Shan Xu
Keyword(s):  
Time Series ◽  
Working Conditions ◽  
Dynamic Characteristics ◽  
Mr Damper ◽  
Ar Model ◽  
Vibration Process ◽  
New Type ◽  
Non Gaussian ◽  
Working Parameters ◽  
Optimum Working

In order to find out a new type of MR damper for block making machine, the signals of displacement in the vibration process during the test are collected and the time series AR model of trispectrum for analyzing the dynamic characteristics of the MR damper is built. It turns out that , in different working conditions, slices of trispectrum are applied to obtain the signal’s non-Gaussian, nonlinear amplitude-frequency characteristics which are very important for us to select the optimum working parameters of the MR damper.

Experimental Analysis and Theoretical Research of Electro-Mechanical Characterization of Piezoelectric Stack Actuators

2011 ◽  
Vol 197-198 ◽  
pp. 1464-1468
Author(s):  
Hui Qun Ye
Keyword(s):  
Energy Transfer ◽  
Working Conditions ◽  
Experimental Analysis ◽  
Mechanical Characterization ◽  
Piezoelectric Materials ◽  
Maximum Energy ◽  
Theoretical Research ◽  
Mechanical Loads ◽  
Optimum Working

This paper presents the results of experimental analysis and theoretical research of piezoelectric stack actuators. The key is to understand the behavior of piezoelectric materials mechanical loads in this paper, and to determine optimum working conditions. Based on analysis of some parameters and driven model, which are necessary to performing design optimization to achieve maximum energy transfer and minimum power consume.

Determination of the optimum working conditions of photomultipliers

1963 ◽  
Vol 21 ◽  
pp. 106-112 ◽  
Author(s):  
G. Bellettini ◽  
C. Bemporad ◽  
C. Cerri ◽  
L. Foà
Keyword(s):  
Working Conditions ◽  
Optimum Working

scholarly journals Future Directions for Human-Centered Transparent Systems for Engine Room Monitoring in Shore Control Centers

2021 ◽  
Vol 10 (1) ◽  
pp. 22
Author(s):  
Changhun Han ◽  
Apsara Abeysiriwardhane ◽  
Shuhong Chai ◽  
Ananda Maiti
Keyword(s):  
Maritime Transportation ◽  
Future Directions ◽  
Performance Improvements ◽  
Engine Room ◽  
Transportation Sector ◽  
Control Centre ◽  
Presentation Methods ◽  
Autonomous Ship ◽  
Uncertainty Information ◽  
Machine Interaction

Many autonomous ship projects have reflected the increasing interest in incorporating the concept of autonomy into the maritime transportation sector. However, autonomy is not a silver bullet, as exemplified by many incidents in the past involving human and machine interaction; rather it introduces new Human Factor (HF) challenges. These challenges are especially critical for Engine Room Monitoring (ERM) in Shore Control Centre (SCCs) due to the system’s complexity and the absence of human senses in the decision-making process. A transparent system is one of the potential solutions, providing a rationale behind its suggestion. However, diverse implementations of transparency schemes have resulted in prevalent inconsistencies in its effects. This literature review paper investigates 17 transparency studies published over the last eight years to identify (a) different approaches to developing transparent systems, (b) the effects of transparency on key HFs, and (c) the effects of information presentation methods and uncertainty information. The findings suggest that the explicit presentation of information could strengthen the benefits of the transparent system and could be promising for performance improvements in ERM tasks in the SCC.

scholarly journals OPTIMUM WORKING CONDITIONS FOR VARIABLE WIDTH PLOUGHS

2021 ◽  
pp. 248-254
Author(s):  
Petru Cardei ◽  
Cristian Nuţescu ◽  
Mihai Matache ◽  
Oana Cristea
Keyword(s):  
Working Conditions ◽  
Experimental Validation ◽  
Operating Regime ◽  
Starting Point ◽  
Draft Force ◽  
Experimental Plan ◽  
Optimum Working

In this paper, a few assessments of the optimal parametric combinations in the operating regime of agricultural aggregates with ploughs of variable width are made. The starting point was from a classic expression of the tillage draft force required for traction. In order to find optimal points, some problems of constrained extreme have been formulated. Extremes provided by the optimal working width and speed have been found. Such optimal points have existed in the literature, for about half a century. Using these theoretical estimates of the optimal points sought, assessments of the possibilities for their experimental validation were made. Basic conditions for an experimental plan are formulated to highlight such optimal points.

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