Both - emergency shutdown system design and testing, I&E equipment reliability, equipment troubleshooting, root cause failure analysis, use of design codes (API, NEC, etc), financial and business decision making (NPV, IRR, life cycle cost methodology), searching for and implementing new technology, construction support, review of supplier data and quality for engineered equipment, review of capital projects for conformance with refinery specifications, and ownership of engineering documentation for instrumentation & electrical equipment in the refinery. . Electrical Engineer - power equipment design and analysis, switchgear & cable selection, variable frequency drive conversions, power generation and distribution support, lighting design & layout, grounding design, area classification interpretation, heat tracing design .