Select Engineering provides consulting, engineering, design and drafting services for energy companies. The company performs sulfur recovery and removal, fractionation, dehydration, nitrogen rejection and helium extraction projects. It focuses on the design, operation and maintenance of chemical manufacturing. Select Engineering also performs vessel sizing and the design for wind, seismic and external loading. The company offers research, inspection and planning for the construction of pipeline and industrial components and systems. It designs industrial electrical installations in hazardous areas. The company provides specifications for electrical equipment, such as transformers, breaker panels, lights, electrical disconnects and motor control centers. Select Engineering is located in Tulsa, Okla.