BWR Mechanical Balance of Plant (BOP) Systems such as Heating Ventilation and Cooling, Plant Chilled Water, Containment Cooling Systems, Liquid and Solid Radiological Waste Management, Plant Pneumatics, Auxiliary Drain Systems, as well as, Water, Gas, and Chemical Systems. The discipline that executes a robust process of design, creation, and optimization of systems, consisting of identification and quantification of system requirements, creation of alternate system design concepts, performance of design trade studies, selection and implementation of the best designs and verification that the design is properly integrated and executed.