POWER PLANTS

Just like the environmental impact of power plants, the performance of cooling water systems within these plants is also of great importance for overall operational efficiency. Ensuring the efficiency of these systems requires a combination of more than one engineering discipline. At ARTI Proje, we offer a variety of combined engineering services for these kinds of projects.

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COMMONLY OVERLOOKED ISSUES IN DESIGN

Given that the performance of cooling water systems in power plants is closely linked to the production efficiency of the plant itself, the engineering behind cooling water systems gains importance from various aspects. Right at the beginning of the project, one of the topics which needs to be addressed is the analysis and control of environmental impacts which the heated water being released back into the sea may cause. This is a task which should ideally be discussed and evaluated during the initial Environmental Impact Assessment (EIA) phase of the design process.

From an investment perspective, the ability to look beyond initial investment costs to monitor operational costs is also a key factor influencing the success of the investment. Maintaining an optimum balance between target performance levels and minimisation of operational costs is therefore a critical step in the design process of water cooling systems. In order to achieve this, the design should ensure that the level of energy consumed when receiving and discharging the specified volume and quality of seawater is kept at a minimum, while also taking into account seasonal changes in flow rates and conditions for easy adaptation.

In designing the intake and discharge pipelines of the cooling water systems, the detail in which wave and flow effects analyses need to be carried out and integrated into the design can often be overlooked. Given that the pipelines are laid on the seabed, they must be able to withstand any kind of wave and flow effect in order to maintain the target performance level throughout the economic life of the project. Therefore, it is extremely important to develop a safe and reliable design which is in line with the latest practices in the field of underwater pipeline engineering.

A final point, which is not given as much importance as it should, is the development of a design which takes into consideration construction methodology, underwater operations and seasonality of offshore conditions. Cost reduction is a process which begins with the determination of pipe specifications, such as the type of pipe and its diameter and continues with the correct placement method for the pipe. This process can be extended to also include a specification of the equipment needs of the contractor undertaking the construction of sea structures and the optimization of designs in line with contractor capabilities.

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OUR SCOPE OF SERVICES

At ARTI Proje, we provide in depth engineering and consultancy services for the design of marine structures within water cooling systems of power plants. On the marine side, our services cover the full scope of steps in the hydraulic cycle of cooling water. These include critical steps in the process such as the planning of site survey, the hydraulic design of pipes, diffuser designs, dilution calculations and modeling.

Thanks to our vast experience in the field of underwater pipeline design, ARTI Proje is qualified and preferred designer for many local and foreign investors and consultants in the design of water cooling systems.

As a Consultancy group, we support the needs of investors’ during the design stage; where the key decisions which will impact the implementation and operation of the project are taken. We additionally offer further support during the permitting process, more specifically:

– the preparation of marine structural designs, including offshore intake heads at FEED, basic and detailed design levels,
– field surveys and measurement studies,
– cost estimations for civil works
– wave, current and heat transport modeling studies
– execution of environmental studies required for the EIA report process
– preparation of specifications for the scope of field studies for areas such as bathymetry, off-shore surveys and oceanographic projects
– preparation of tender documentation for civil works
– overall project management support

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FIELD DATA IS ALWAYS INSUFFICIENT

Enerji Santrali ModellemesiWhether undertaken as part of EIA requirements or due to permitting conditions from local authorities, Hydrographical –and– Oceanographic field studies are always carried out in cooling water projects. However, the field data obtained from these studies is generally found insufficient for two main reasons:

– Studies are planned before the design stage, therefore are carried out without much knowledge of the area and a real target to achieve optimum design.
– The real conditions encountered which become evident during the design phase and therefore need to be incorporated into the design.

There are also influenced by time and budget constraints, which always have a negative impact on the quality and scope of field studies.

It is possible to minimize the drawbacks of insufficient field data through simulations based on numeric models. Models calibrated together with the existing yet limited data can help in projecting different (future) scenarios, and therefore a reliable design can be developed from these combined results. ARTI Proje uses professional modelling software packages to simulate complex wave, hydrodinamic- and water quality problems encountered in cooling water systems. We have expanded the scope of our modelling capabilities to include sediment transport, diffuser hydraulics and geotechnical modelling to meet the needs of varying projects.

The most economically viable approach for investors is to include marine engineering experts in the project as early as possible, ideally before any significant decisions regarding cooling water system have been made. By doing so, field studies can be planned with a grater degree of accuracy and efficiency by keeping the technical needs of the project in mind and making better use of more limited resources. The end result, an elimination of unnecessary future repetitions and costs, and even more critically, the prevention of design errors stemming from a lack of data.

Please contact us for any further information you may require about our experience in the field. Our engineering team is also happy to discuss any technical issues you may have experienced in your cooling water intake and discharge system project.