Operation and maintenance of Osmangazi Bridge

2019 ◽  
Author(s):  
Fatih Zeybek
Keyword(s):  
Suspension Bridge ◽  
Maintenance Strategy ◽  
Operation And Maintenance ◽  
Bridge Maintenance ◽  
The World ◽  
Inspection And Maintenance ◽  
Maintenance Activities

<p>Osmangazi Bridge is a suspension bridge with a 1550 meter main span is the fourth longest span bridge in the world.</p><p>The routine maintenance of the bridge are done by the Operator GIIB and the heavy repairs by the Concessionaire (Otoyol A.Ş.) based on the recommendations of the Bridge EPC contractor.</p><p>This paper summarizes the basics of the Osmangazi Bridge’s operation maintenance activities, which emphasizes to the Bridge maintenance strategy and the instructions to be applied for the operation and maintenance staff and subcontractors in order for them to undertake inspection and maintenance of the bridge. A summary of overall inspection and maintenance programs outlining the required anticipated tasks over the time is also given in the paper.</p>

scholarly journals Markov Reward Approach and Reliability Associated Cost Model for Machine Tools Maintenance-Planning Optimization

2019 ◽  
Vol 4 (4) ◽  
pp. 824-840
Author(s):  
Zeng Wenbin ◽  
Ilia Frenkel ◽  
Shen Guixiang ◽  
Igor Bolvashenkov ◽  
Jörg Kammermann ◽  
...  
Keyword(s):  
Machine Tools ◽  
Cost Model ◽  
Maintenance Planning ◽  
Maintenance Strategy ◽  
System Operation ◽  
Operation And Maintenance ◽  
Planning Optimization ◽  
Maintenance Activities ◽  
Markov Reward ◽  
System Average

This paper proposes a novel Reliability Associated Cost (RAC) model for machine tools throughout its lifetime that considers two different failure consequences, immediate failure and product rejections increase failure. A maintenance strategy of corrective maintenance combined with overhaul utilized to the maintenance activities of machine tools in the current paper. Markov reward approach is developed for computing of the costs incurred by both failure consequences and maintenance activities and system average availability throughout the machine tools life cycle. The Genetic Algorithm is used to find the optimal repair rates layout and overhaul moments that provide a minimal expected cost of system operation and maintenance actions and satisfies the desired availability requirement. A numerical example is presented in order to illustrate the approach and the results show that the proposed technique can significantly cut the RAC for machine tools.

Monitoring of the Great Belt Bridge hanger vibrations and expansion joint movements using Digital Image Correlation

2018 ◽  
Author(s):  
Jan Winkler ◽  
Chris Hendy
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Suspension Bridge ◽  
Image Correlation ◽  
Civil Infrastructure ◽  
Expansion Joint ◽  
Bridge Maintenance ◽  
Infrastructure System ◽  
Maintenance Activities ◽  
Great Belt

Civil infrastructure system owners are often faced with an increasingly impossible set of management challenges. Informed decisions on timely intervention for effective bridge maintenance activities rely on good quality, accurate and reliable asset condition data. Digital image correlation (DIC) is a noncontact photogrammetry technique that can be used for monitoring by imaging a bridge component periodically and computing strain and deformation from images without traffic disruption. This paper describes the use of DIC for the monitoring of the Great Belt Bridge wind‐induced hanger vibrations and temperature‐induced movements of the expansion joint. Both DIC measurements provided previously unavailable data and informed next steps with respect to the maintenance strategy. To the authors knowledge these are one of the first such vision‐based structural health monitoring campaigns carried out on a suspension bridge.

scholarly journals Modelling and simulation of operation and maintenance strategy for offshore wind farms based on multi-agent system

2015 ◽  
Vol 30 (8) ◽  
pp. 2981-2997 ◽  
Author(s):  
M’hammed Sahnoun ◽  
David Baudry ◽  
Navonil Mustafee ◽  
Anne Louis ◽  
Philip Andi Smart ◽  
...  
Keyword(s):  
Wind Farms ◽  
Modelling And Simulation ◽  
Offshore Wind ◽  
Maintenance Strategy ◽  
Multi Agent System ◽  
Agent System ◽  
Offshore Wind Farms ◽  
Operation And Maintenance ◽  
Multi Agent

A Comparison of Double Block and Bleed Technologies

2012 ◽  
Author(s):  
Angus Bowie
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Gas Industry ◽  
The World ◽  
Maintenance Activities ◽  
True Definition ◽  
Plant Shutdown

Double Block and Bleed is a term often used in the oil and gas industry to define a level of isolation sufficient to perform maintenance activities. The true definition relates to incumbent valves providing two proven levels of isolation against the outboard pressure to permit breaching of containment in the isolated pipe. This paper assesses how temporary isolation devices can provide equivalent isolation where incumbent valves do not exist at appropriate locations in the system. It reviews the different interpretations of Double Block and Bleed used within the industry and compares how different isolation devices are assessed in relation to the level of isolation they provide. It will reference several examples from around the world of where temporary isolation devices have been used to replace valves and perform repairs in trunk pipelines without depressurising the whole pipeline. It will also cover examples of isolating live process pipe to perform maintenance activities outside plant shutdown.

scholarly journals The Challenge of Maintaining Stormwater Control Measures: A Synthesis of Recent Research and Practitioner Experience

2018 ◽  
Vol 10 (10) ◽  
pp. 3666 ◽  
Author(s):  
Andrew Erickson ◽  
Vinicius Taguchi ◽  
John Gulliver
Keyword(s):  
Scientific Research ◽  
Phosphorus Release ◽  
Control Measures ◽  
Vegetation Coverage ◽  
Regional Characteristics ◽  
Permeable Pavements ◽  
The World ◽  
Inspection And Maintenance ◽  
Stormwater Control Measures ◽  
Stormwater Control

The methods for properly executing inspection and maintenance of stormwater control measures are often ambiguous and inconsistently applied. This paper presents specific guidelines for inspecting and maintaining stormwater practices involving media filtration, infiltration, ponds, and permeable pavements because these tend to be widely implemented and often unsatisfactorily maintained. Guidelines and examples are based on recent scientific research and practitioner experience. Of special note are new assessment and maintenance methods, such as testing enhanced filtration media that targets dissolved constituents, maintaining proper vegetation coverage in infiltration practices, assessing phosphorus release from pond sediments, and the development of compressed impermeable regions in permeable pavements and their implications for runoff. Inspection and maintenance examples provided in this paper are drawn from practical examples in Northern Midwest USA, but most of the maintenance recommendations do not depend on regional characteristics, and guidance from around the world has been reviewed and cited herein.

scholarly journals Risk Based Improvement Performance Strategy for Operation and Maintenance Activities of River and River Infrastructure (BBWS Ciliwung-Cisadane Authority)

2021 ◽  
Vol 1 ◽  
Author(s):  
Isni Septima Anindhita
Keyword(s):  
Flood Control ◽  
Public Works ◽  
Short Term ◽  
Risk Response ◽  
Operation And Maintenance ◽  
Recommendations For Action ◽  
Maintenance Activities ◽  
Sustainable System ◽  
Term Maintenance

The Ministry of Public Works and Public Housing (PUPR) has the duty and responsibility to carry out effective and efficient river operation activities and river infrastructure including overcoming floods during the rainy season, but these activities are deemed necessary for improvement in planning procedures. To realize this goal, it is necessary to manage risks that can reduce river performance and river infrastructure as flood control. With risk management in this activity, it is possible to apply the sequence of risks that occur which are then used as recommendations for action (risk response) and risk-based development strategies to improve river performance and river infrastructure to control floods through operation and maintenance activities to build a functional and sustainable system. Suitable for long-term planning and short-term maintenance needs.

Yavuz Sultan Selim (3rd Bosphorus) Bridge-Inspection and Maintenance

2018 ◽  
Author(s):  
Abdul Farooq
Keyword(s):  
Health Monitoring ◽  
Bridge Deck ◽  
Road Traffic ◽  
Weather Conditions ◽  
Suspension Bridge ◽  
Bridge Inspection ◽  
Seismic Region ◽  
Inspection And Maintenance ◽  
Wind Climate ◽  
Heavy Rail

The Yavuz Sultan Selim bridge, also known as the 3rd Bosphorus Bridge, was opened to road traffic in August 2016. The stiffened suspension bridge, with a main span of 1408m, overall length 2250m and width 59.4m, is believed to be the first of its type. It is situated in a seismic region and exposed to a severe wind climate. It has been designed and constructed to carry 8 lanes of road traffic and twin track heavy rail-all on a single deck. <p> The bridge has been equipped with a Structural Health Monitoring (SHM) system. The instrumentation allows the monitoring of bridge behaviour. The dehumidification of the towers, bridge deck and suspension cables is also monitored. The ambient weather conditions including wind velocity, humidity and seismic activity are recorded. <p> This paper gives an overview of the inspection and maintenance regime. It also describes the observed performance of the bridge against its predicted behaviour.

Economies of Scale (1848–51)

2020 ◽  
pp. 283-318
Author(s):  
Richard Haw
Keyword(s):  
United States ◽  
Economies Of Scale ◽  
Suspension Bridge ◽  
The United States ◽  
Wire Rope ◽  
Suspension Bridges ◽  
Site Specific ◽  
Kentucky River ◽  
The World ◽  
Railroad Bridge

Between 1847 and 1852, John built four separate aqueducts for the Delaware and Hudson Canal; moved his home, family, and wire rope factory from western Pennsylvania to Trenton, New Jersey; secured the contract to build a huge railroad bridge over the Kentucky River; and continued to mount substantial campaigns to win contracts to span the Ohio at Wheeling and the Niagara Gorge. The four D&H spans were mini masterpieces of engineering and planning. Each structure was very different; each required new solutions to site-specific problems. One of the spans, the Delaware Aqueduct, exists to this day, the oldest suspension bridge in the United States and one of the oldest “modern” suspension bridges in the world. On the larger projects, John again lost out to his old rival Ellet on both the Wheeling and the Niagara spans.

RISK-BASED MANAGEMENT OF STRUCTURAL INTEGRITY FOR BASS STRAIT PLATFORMS

2001 ◽  
Vol 41 (1) ◽  
pp. 727
Author(s):  
A.D. Barton
Keyword(s):  
Structural Integrity ◽  
Risk Model ◽  
Offshore Platforms ◽  
Integrity Assessment ◽  
Inspection And Maintenance ◽  
Tubular Joint ◽  
Maintenance Activities ◽  
Consistent Basis ◽  
Inspection Data ◽  
Inspection Techniques

Esso Australia Pty Ltd (Esso) has embraced the framework of risk management to improve the focus and priorities of its inspection and maintenance activities. Structural integrity is one of the disciplines that has adopted a risk-based approach to inspection and integrity assessment and this has been applied to Esso/BHP’s 18 offshore platforms located in Bass Strait.The paper provides a discussion of the issues faced in the management of structural integrity of offshore platforms which lead to the development of a risk-based inspection (RBI) strategy. RBI is applied to improve the prediction of the structures’ condition and provides a consistent basis for continued improvement in the future. The RBI model generates targeted inspection workscopes for each platform that, coupled with the implementation of appropriate inspection techniques, ensure that the integrity of the platforms can be managed with greater confidence and at lower cost.The RBI approach has resulted in reduced focus on traditional areas of uncertainty such as fatigue of tubular joints, and increased focus on secondary structures, for example service caissons. This shift in focus is made possible by building into the risk model a calibration process that considers previous inspection data. A key component of this calibration is a new method developed to calibrate tubular joint fatigue lives.

Prognosis Informed Design Framework for Operation and Maintenance of Wind Turbines

2012 ◽  
Author(s):  
Prasanna Tamilselvan ◽  
Yibin Wang ◽  
Pingfeng Wang
Keyword(s):  
Decision Making ◽  
Wind Turbines ◽  
High Performance ◽  
Wind Farm ◽  
Economic Loss ◽  
Environmental Benefits ◽  
Maintenance Strategy ◽  
System Failures ◽  
Operation And Maintenance ◽  
Failure Prognosis

Advances in high performance sensing and signal processing technology enable the development of failure prognosis tools for wind turbines to detect, diagnose, and predict the system-wide effects of failure events. Although prognostics can provide valuable information for proactive actions in preventing system failures, the benefits have not been fully utilized for the operation and maintenance decision making of wind turbines. This paper presents a generic failure prognosis informed decision making tool for wind farm operation and maintenance while considering the predictive failure information of individual turbine and its uncertainty. In the presented approach, the probabilistic damage growth model is used to characterize individual wind turbine performance degradation and failure prognostics, whereas the economic loss measured by monetary values and environmental performance measured by unified carbon credits are considered in the decision making process. Based on the customized wind farm information inputs, the developed decision making methodology can be used to identify optimum and robust strategies for wind farm operation and maintenance in order to maximize the economic and environmental benefits concurrently. The efficacy of proposed prognosis informed maintenance strategy is compared with the condition based maintenance strategy and demonstrated with the case study.

Sign in / Sign up

Export Citation Format

Share Document