Steam condensers are an integral part of the power generation cycle in thermal power plants and play a key role in ensuring efficient and reliable unit operation. The ability to condense steam efficiently is critical and depends on the condenser heat transfer performance and of the auxiliaries to quickly achieve and then maintain the necessary vacuum in the system. Therefore the overall system equipment has to be maintained appropriately to ensure the necessary heat transfer properties are sustained. In addition prevention and mitigation of tube leaks is essential to safeguard the condensate water quality. The latter is important to minimize corrosion issues in downstream equipment such as the boiler and turbine.
ETD were therefore contacted to generate a study that focused on steam condensers and their associated auxiliary equipment. This best practice manual provides a detailed guideline document for the operation and maintenance of the system to meet performance standards. Consideration has been paid to the impacts of various operating modes such as base loading, two shifting, cyclic operation and fast load ramping operation on system performance and reliability. Efficient and reliable heat transfer is a key function of this system. Typical performance issues and their causes as well as their rectification have been addressed. In addition the integrity of the condenser is essential to prevent the ingress of raw cooling water into the steam/water cycle. Ways of detecting and mitigating this potential have been addressed. Current and new approaches to managing condenser fouling have been reviewed. The report addresses the development of asset management programs for the chosen equipment, including the use of on-line and off-line inspection and monitoring tools that are currently available to evaluate the health of the equipment. Overall the product will be a best management guideline to ensure the equipment meets it intended operating deliverables in a cost effective manner.