The objective of a proper surface preparation process is to remove all visible and invisible contaminants thereby providing a sound foundation for the intended lining system. The cleaning process should remove all loose matter, rust, scale, graphitization, chlorides, and produce…
Intake Structure: An intake structure is a structure through which source water for cooling water systems enters or flows into a power generation facility. Coarse and fine screens are placed within the intake structure to filter debris out of the source water. After passing thro…
Networks of pipes and control valves serve to convey pumped cooling water to the various components of the cooling water system.
Cooling of the spent stream of the turbine exhaust is accomplished in a component known as the main stream surface condenser. Coolant is pumped from a body of water through the condenser via the cooling water system. The circulating water is physically isolated fom the stream pa…
Cooling towers provide a means of removing residual heat from plant cooling water systems by a water to air exchange. Two basic methods of water circulation are once through and recirculation systems. In once through systems water enters the plant, picks up heat in the plant hea…
Cooling water moves through the heat exchanger where it is physically isolated from the path of the medium to be cooled, so as not to diminish its quality. At the heat exchanger, the ciruclating water flows through a bundle of thin wall condenser tubes or plates, while spent ste…
Pumps serve to draw cooling water from the power plant's intake structure, and circulate the cooling water through the various componnents of the power plant's cooling water system. They are critical to the cooling process in the plant and need to be protected from the effects o…
A set of screen is placed within the intake structure, serving to filter out debris fron the cooling water. The screens prevent debris from advancing to the pumping area of the intake structure where it may disrupt or affect pumping operations, damage the pumps, or damage the in…
The objective of this chapter is to provide general guidelines for implementation of an inspection program for application of protective coating or lining materials for cooling water systems in power plants.
Fig. 1, Ch. 1 on the following page, is a schematic diagram of a fairly standard design for power plant cooling water systems. Although the design of cooling water systems varies from plant to plant, the components shown are common to most systems, and these are discussed briefl…
