scholarly journals Effect of Turret Location on the Dynamic Behaviour of an Internal Turret Moored FPSO System

1970 ◽  
Vol 3 (1) ◽  
pp. 23-37 ◽  
Author(s):  
T Rajesh Kannah ◽  
R Natarajan
Keyword(s):  
Working Environment ◽  
Scale Model ◽  
Loading Conditions ◽  
Sea Waves ◽  
Wave Flume ◽  
Load Cells ◽  
Mooring Forces ◽  
Marine Engineering ◽  
Rotary Type ◽  
Safe Working

An experimental investigation on the motions and mooring forces of a typical internal turret moored Floating Production Storage and Offloading (FPSO) system under regular sea waves for different loading conditions i.e., 40%DWT, 70%DWT and 100%DWT with different turret locations viz forward, midships and semi- aft positions is reported in this paper. A 1:100 scale model of 140000 DWT turret moored FPSO system was tested in a 2m wide wave flume at a water depth of 1m for the wave frequencies from 0.55Hz to 1.25Hz in steps of 0.04Hz. The motions were measured by rotary type potentiometers and proving ring type load cells were used to measure the mooring forces. From the analysis of the experimental results, it is found that among the three turret locations, the forward turret position is the best suited position for the internal turret moored FPSO system, so as to have favourable and safe working environment. In this turret location, the surge, heave and pitch motions are about 20% to 30% less in comparison with mid ship and semi-aft positions for all loading conditions. Keywords: FPSO system, internal turret, CALM, motions, mooring forces  DOI: 10.3329/jname.v3i1.926Journal of Naval Architecture and Marine Engineering 3(2006) 23-37

Experimental Investigation on the Dynamic Response of an Internal Turret Moored FPSO System Under Sea Waves

2003 ◽  
Author(s):  
T. Rajesh Kannah ◽  
R. Natarajan
Keyword(s):  
Experimental Investigation ◽  
Dynamic Behaviour ◽  
Operating Conditions ◽  
Scale Model ◽  
Sea Waves ◽  
Regular Waves ◽  
Wave Flume ◽  
Load Cells ◽  
Mooring Forces ◽  
Rotary Type

An experimental investigation on the dynamic behaviour of a typical internal turret moored FPSO system with a turret located at midships position is reported. A 1:100 scale model of 140000t DWT turret moored FPSO system was tested under regular waves for three operating conditions i.e. 40%DWT, 70%DWT and 100%DWT in a 2m wide wave flume at a water depth of 1m for the wave frequencies from 0.55Hz to 1.25Hz in steps of 0.04Hz. The motions were measured by rotary type potentiometers and specially ring type load cells were used to measure the mooring forces. The model tests results are analysed and presented with discussions in this paper.

scholarly journals Does Employee Care Trigger Innovation Under a Healthy and Safe Working Environment? Evidence from the Pharmaceutical Industry in China

Healthcare ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 194
Author(s):  
Minghui Yang ◽  
Qian Lin ◽  
Petra Maresova
Keyword(s):  
Safety Management ◽  
Positive Impact ◽  
Health And Safety ◽  
Working Environment ◽  
Firm Innovation ◽  
Corporate Managers ◽  
Pharmaceutical Firms ◽  
Corporate Ability ◽  
Safe Working

Sustainability of the workforce becomes a crucial issue, of which responsible care for employees can increase job satisfaction and human capital that impact corporate ability to absorb and generate new knowledge. Firms are obligated to provide a healthy and safe working environment for their employees, but it may in turn hinder innovation due to rigid and structured institutional regulations. Drawing on data of 308 China’s pharmaceutical firms from 2010 to 2017, we investigated whether employee care can trigger innovation under corporate adoption of the occupational health and safety management system (OHSMS). Our results suggest that both employee care and OHSMS adoption have a positive impact on innovation. Moreover, the positive relationship between employee care and innovation was more pronounced in firms that had adopted the OHSMS certification. These findings are valuable to policymakers and corporate managers in emerging economies through corroborating the important role of workforce sustainability in facilitating firm innovation.

scholarly journals MODELLING RAIL THERMAL DIFFERENTIALS DUE TO BENDING AND DEFECTS

Transport ◽  
2021 ◽  
Vol 36 (2) ◽  
pp. 134-146
Author(s):  
Chris Bosomworth ◽  
Maksym Spiryagin ◽  
Sanath Alahakoon ◽  
Colin Cole
Keyword(s):  
Heat Transfer ◽  
Environmental Factors ◽  
Early Detection ◽  
Working Environment ◽  
Rolling Stock ◽  
High Importance ◽  
Heavy Haul ◽  
Run Up ◽  
Potential Use ◽  
Safe Working

Rail foot flaws have the potential to cause broken rails that can lead to derailment. This is not only an extremely costly issue for a rail operator in terms of damage to rolling stock, but has significant flow-on effects for network downtime and a safe working environment. In Australia, heavy haul operators run up to 42.5 t axle loads with trains in excess of 200 wagons and these long trains produce very large cyclic rail stresses. The early detection of foot flaws before a broken rail occurs is of high importance and there are currently no proven techniques for detecting rail foot flaws on trains at normal running speeds. This paper shall focus on the potential use of thermography as a detection technique and begin investigating the components of heat transfer in the rail to determine the viability of thermography for detecting rail foot flaws. The paper commences with an introduction to the sources of heat generation in the rail and modelling approaches for the effects of bending, natural environmental factors and transverse defects. It concludes with two theoretical case studies on heat generated due to these sources and discusses how they may inform the development of a practical thermography detection methodology.

scholarly journals The Role of the Polish Interdepartmental Commission for the Maximum Admissible Concentrations and Intensities for Agents Harmful to Health in the Working Environment in the Development of Safe Working Conditions

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
Skowron J ◽  
◽  
Zapór L ◽  
Miranowicz-Dzierzawska K ◽  
◽  
...  
Keyword(s):  
Working Conditions ◽  
Health And Safety ◽  
Working Environment ◽  
The European Union ◽  
Maximum Admissible Concentration ◽  
Management Measures ◽  
The Relationship ◽  
Interdepartmental Commission ◽  
Safe Working

The article discusses the principles of determining the maximum admissible concentration and intensity values for harmful agents present at workplaces as the basic criteria for ensuring safe and hygienic working conditions in Poland and in the European Union. The role of the Interdepartmental Commission for the Maximum Admissible Concentrations and Intensities of Agents Harmful to Health in the Working Environment is presented in this process. The attention was drawn to the relationship between the occupational health and safety legislation and the EC regulations on chemicals, which together provide both employers and the Member States with the necessary data and instruments to work safely with chemicals and to be able to take appropriate actions and risk management measures.

Modeling IACC Sail Forces by Combining Measurements with CFD

1993 ◽  
Author(s):  
Jerome H. Milgram ◽  
Donald B. Peters ◽  
D. Noah Eckhouse
Keyword(s):  
Scale Model ◽  
Force Model ◽  
Actual Performance ◽  
Force Coefficients ◽  
Prediction Program ◽  
Induced Drag ◽  
Load Cells ◽  
Velocity Prediction ◽  
America’S Cup ◽  
Parasitic Components

A sailing dynamometer with a 42% scale model of an International America's Cup Class rig is used to measure sail forces and moments in actual sailing conditions. The sailing dynamometer is a 35-foot boat containing an internal frame connected to the hull by six load cells configured to measure all the forces and moments between the frame and the hull. All sailing rig components are attached to the frame, so that the sail forces are measured. Sail shapes in use are determined by computer-interfaced video. Computational fluid dynamics performed on the measured shapes provides the induced drag. This allows the measured drag to be decomposed into induced and form-and-parasitic components, which is necessary for generating a mathematical sail force model for a velocity prediction program (VPP). It is shown that VPP results using these new sail force coefficients are in better agreement with actual performance than are VPP results based on traditional sail force coefficients.

DEMOGRAPHIC ANALYSIS OF OCCUPATIONAL ACCIDENT OCCURRENCE IN MANUFACTURING INDUSTRY

2015 ◽  
Vol 77 (1) ◽  
Author(s):  
Jafri Mohd Rohani ◽  
Mohamed Fitri Johari ◽  
Wan Harun Wan Hamid ◽  
Hood Atan
Keyword(s):  
Manufacturing Industry ◽  
Preventive Measures ◽  
Health And Safety ◽  
Working Environment ◽  
Occupational Accidents ◽  
Occupational Accident ◽  
Accident Rate ◽  
Data Collection Process ◽  
Safety Officer ◽  
Safe Working

The objective of this paper is to analyze the demography aspect of occupational accident occurrence in Malaysia for manufacturing industry. High accident rate would give an adverse effect not only to the victims and their family but also to the organization as well. This study analyses various type of occupational accidents which limited to temporary disability with more than one day sick leave and cases recorded range between 2008 and 2013. The data is gathered from six different sectors within manufacturing industry by using local specific approach.  Information related to each accident is obtained by checking past occupational accident record and interviewing site safety officer in charge, human resource representative, site supervisor and fellow workers. There are 342 cases in total have been gathered during data collection process before data analysis phase took place. This study provides a better perspective regarding to occupational accident occurrence to interested stakeholder such as enforcement body, occupational health and safety practitioner and company management itself. The findings from this study can be used to draft necessary preventive measures in order to provide safe working environment which can give significant impact through reduction of occupational accidents in the future.

Exposure to weather risk: a new information paradigm

2015 ◽  
Vol 55 (2) ◽  
pp. 424
Author(s):  
David Farr ◽  
Andrew Tupper
Keyword(s):  
Tropical Cyclone ◽  
Tropical Cyclones ◽  
Weather Forecasting ◽  
Working Environment ◽  
Response Planning ◽  
New Information ◽  
Maximum Benefit ◽  
Weather Risk ◽  
Resource Sector ◽  
Safe Working

When forecasting the weather, simple outcome statements do not always adequately describe what could eventuate for a particular location. Importantly, some weather situations are finely balanced, and cannot be forecast five days in advance; sometimes forecasting 24 hours ahead is difficult, particularly if tropical cyclones are present. To address these weather forecasting complexities, the Bureau of Meteorology is moving towards providing more probability based guidance, such as more information on potential rainfall ranges, wind speed probabilities, wave height probabilities, tropical cyclone formation risk and potential tropical cyclone tracks. For response planning purposes these changes will bring their own challenges. For example, previous chances of a tropical cyclone impact have been described with yes or no forecasts. In the future these risks could be described in percentages. Responding to a 5% risk suggests that 19 out of 20 responses could be perceived to be unnecessary, while on the other hand not responding to a 5% risk could be assessed as dangerous. Developing these new information types is only part of the process. To achieve better practice, it will also be critical to create presentation strategies that express the content in a usable manner, work with clients so they gain maximum benefit from the guidance, and enable clients to develop response plans that are aligned with the forecasts. The Bureau of Meteorology is seeking to work in a closer partnership with the resource sector on this to help maximise operational efficiencies, while ensuring a safe working environment.

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