Power plant intake entrainment analysis

Power plant condenser cooling water intake entrainment of fish eggs and lar vae is becoming an issue in evaluating environmental impacts around the pla nts. Methods are required to evaluate intake entrainment on different types of water bodies. Presented in this paper is a derivation of the basic rela tionships for evaluating entrainment from the standing crop of fish eggs an d larvae for different regions of a water body, and evaluating the rate of entrainment from the standing crop. These relationships are coupled with a 3D hydrodynamic and transport model that provides the currents and flows re quired to complete the entrainment evaluation. Case examples are presented for a simple river system, and for the more complex Delaware River Estuary with multiple intakes. Example evaluations are made for individual intakes, and for the cumulative impacts of multiple intakes.