scholarly journals Analysis on the Basic Essentials of Marine Engineering Safety Management in China's Coastal Areas

2021 ◽  
Author(s):  
Xue yingchun xueyingchun ◽  
chenguoping chenguoping
Keyword(s):  
Safety Management ◽  
Eastern China ◽  
Coastal Areas ◽  
Management Model ◽  
Test Results ◽  
Positive Role ◽  
Marine Engine ◽  
Safe Navigation ◽  
Actual Operation ◽  
Marine Engineering

Abstract China's coastal areas have developed fisheries and busy maritime trade, which leads to the need for a large number of ships in eastern China. Ensuring the safe navigation of ships has become the focus of national management. The main purpose of this paper is to improve the level of marine engine safety management. The safety check list and reverse management model are used to check and measure the marine engine safety. The results show that the test results are M1 = 95.81 and M2 = 96.35 respectively, which indicates that the safety model of reverse management plays a positive role in the actual operation.

Voltage Phase Difference Detection for Superconductor Quench

2014 ◽  
Vol 933 ◽  
pp. 82-85
Author(s):  
Shi Feng Wang ◽  
Yi Xiang Yue ◽  
Jin Fang
Keyword(s):  
Phase Difference ◽  
Detection Method ◽  
Phase Detection ◽  
Test Results ◽  
Development Platform ◽  
Advantages And Disadvantages ◽  
Difference Detection ◽  
Protection Systems ◽  
Actual Operation ◽  
Voltage Phase

In this paper, the actual operation of the superconducting motor and electrical parameters, a detailed analysis of the advantages and disadvantages of the existing quench detection method. After that I proposed an innovative detection method - voltage phase difference detection. On this basis, the design phase detection method based on the voltage difference quench detection and protection systems, based on stand-alone test and NI development platform test results, we verify its feasibility of the voltage phase difference detection method, and great superiority.

Diversification of Water Network Tanks Volume

2015 ◽  
Vol 811 ◽  
pp. 395-401
Author(s):  
Janusz Rak ◽  
Katarzyna Pietrucha-Urbanik
Keyword(s):  
Water Supply ◽  
Safety Management ◽  
Objective Assessment ◽  
Research Direction ◽  
Water Volume ◽  
Water Supply Systems ◽  
Supply Network ◽  
Positive Role ◽  
Water Supply Network ◽  
Crisis Situations

Diversification of the water volume has a particularly positive role in crisis situations related to water supply in urban and industrial areas. The function of water supply tanks is to compensate water supply for a settlement unit in a daily cycle, stabilizing the pressure in the supply area. In crisis situations, tanks capacity is used for the purposes of fire. A new function is the use of stored water as an emergency source of water supply during failure. Water supply network tanks act as reserves for various types of undesirable events. The previous methods of analysis and risk assessment in water supply systems did not include directly the assessment of volume diversification in a given number of water supply network tanks. For this purpose the Shannon-Wiener index, as well as the author’s index, based on the polynomial function, were proposed. These indices enable to perform an objective assessment of the water volume diversification degree ​​​and comparing the various subsystems of collecting water on the example of seven water supply system in the south of Poland. Perspectives for the development of research direction, that is safety management, is a challenge for both theoreticians and practitioners working in the water supply companies.

Reduced Stiffness Criteria for the Safe Buckling Design of Thin Shells and its Numerical Validation

2014 ◽  
Vol 905 ◽  
pp. 283-286
Author(s):  
Hong Tao Wang
Keyword(s):  
Lower Bounds ◽  
Design Method ◽  
Thin Shells ◽  
Test Results ◽  
Element Analysis ◽  
Design Factor ◽  
Critical Design ◽  
Large Sets ◽  
Experimental Design Method ◽  
Marine Engineering

Thin metallic shells have long been adopted as major structural components in weight-sensitive applications, especially in marine engineering. Imperfection sensitive buckling is a critical design factor when these structures are loaded in compression. Traditional experimental design method depends on deriving lower bounds to the scatter of large sets of test results. This paper aims to present an analytical approach, the so-called reduced stiffness method (RSM) to the lower-bound buckling of thin-metallic shells. The validity of the RSM for the prediction of the safe lower bounds to the buckling of thin shells is verified through carefully controlled finite element analysis and the comparative studies confirm the reliability of the RSM.

Training Simulator Design for a Marine Engine Room at Different Levels of Fidelity

1983 ◽  
Vol 27 (12) ◽  
pp. 1001-1005
Author(s):  
T. Govindaraj ◽  
Yuan-Liang Su
Keyword(s):  
Complex System ◽  
Supervisory Control ◽  
Control Mode ◽  
Training Simulator ◽  
Marine Engine ◽  
Engine Room ◽  
Simulator Design ◽  
Marine Engineering ◽  
Different Levels ◽  
Engineering Personnel

A marine powerplant on a large supertanker is a complex system made up of a number of interconnected subsystems where most functions are automated. A human operator manages the system in supervisory control mode, intervening only when an event occurs requiring his action to restore normal operations. For training marine engineering personnel to detect, diagnose, and compensate for failures, simulators at different fidelity levels are being developed. A low fidelity simulator uses information displayed on an Apple II computer terminal in conjunction with system schematics provided on paper. Details of the low fidelity simulator are described, and the results of a pilot experiment are discussed.

Study on Performance of Ground Source Heat Pump Systems Based on Site Tests

2014 ◽  
Vol 1008-1009 ◽  
pp. 226-230 ◽  
Author(s):  
Bo Peng ◽  
Na Zhu ◽  
Ping Fang Hu ◽  
Li Peng ◽  
Fei Lei
Keyword(s):  
Heat Pump ◽  
Coefficient Of Performance ◽  
Ground Source Heat Pump ◽  
Test Results ◽  
Operation Performance ◽  
Design Data ◽  
Factors Affecting ◽  
Ground Source ◽  
Actual Operation ◽  
Saving Rates

This study analyze the actual operation performance and energy efficiency of thirty-nine ground source heat pump (GSHP) systems based on site tests in Wuhan, China. These systems include ground couple heat pump (GCHP) systems, ground water heat pump (GWHP) systems and hybrid ground source heat pump (HGSHP) systems. The results show that energy-saving rates reach 30% for most of the systems using method recommended by Assessment Guideline. The coefficient of performance (COP) of the systems varies as follow: 2.6-4.85 for GCHP systems; 2.58-3.74 for GWHP systems; 2.66-5.67 for combined heat pump systems. According to the test results and system design data, analyses the factors affecting the system performance of three types of ground source heat pump systems.

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