Sigma Engineers and Constructors (SEC) is a professional engineering firm that provides specifically tailored services to meet the needs of North America's oil, gas, and petrochemical industries. SEC provides a complete range of engineering, design, and construction services for the petrochemical, refining, polymer, and utility industries. We have extensive experience in detailed engineering, design, and drafting for a wide range of disciplines including civil, structural, architectural, process and process control, mechanical, piping, electrical, instrumentation and automation, safety, and environmental. SEC also has extensive experience in chemical reactions, cracking, fractionation, heat transfer, environmental abatement, fluid flow, gas compression, petrochemical storage, process safety, solids handling, waste treatment, and utility infrastructures. Our reputation for safely delivering quality projects on time and on budget is well recognized in the industries we serve. We have proven expertise in executing various projects, developing strong relationships with our clients and providing innovative engineering solutions to all we serve. Our quick response time and clear yet concise communication allows us to efficiently complete projects.