Challenge

A local department of natural resources requested that Valdes’ utility client study the feasibility of installing a variable frequency drive (VFD) on one of the four existing generating stations circulating water pumps to reduce the circulating water flow velocity in the intake channel. A reduction in flow velocity was desired to further minimize the impact on their local lake’s ecosystem.

Solution

Valdes Architecture & Engineering (Valdes) worked with the site personnel to set the scope boundaries of the study. Valdes investigated the addition of a VFD on one of the circulating water pumps as well as the alternative of throttling the condenser discharge valves to decrease the flow rate. Valdes created a hydraulic model of the circulating water system to evaluate the flow rate impact of each option. A budgetary total installed cost estimate and schedule were developed for the installation of a VFD on one of the circulating water pumps. A comprehensive report documenting the study results was prepared and submitted to our client to satisfy the request from their state’s department of natural resources.

Impact

Valdes executed a study, prepared a final report, and developed a cost-effective solution to fulfill state requirements.

Services

Mechanical

Pipe Stress Analysis

Piping & Plant Layout

Cost Estimating