Vance Grieshop is a results-driven, licensed Professional Engineer and patent holder with more than 35 years of experience in the global base chemicals industry, specializing in olefin manufacturing. He is recognized as a technical leader in process and operations improvement, with deep expertise in process safety, technology optimization, debottlenecking design, feedstock selection, furnace and tube lifecycle optimization, energy management, product quality, and the integration of operator and engineering knowledge.

As the lead Process Engineer on multiple debottlenecking and conversion projects—including olefin plant liquid-to-gas cracker conversions—Vance led the development of project scope, process modeling, equipment design, safeguarding strategies, heat and material balances, ROI evaluations, and field implementation packages, contributing to the successful execution of each project.

Vance is known for aligning team objectives with broader business goals and for effectively leveraging Shell’s Management System, work processes, and design standards. Throughout his career, he has consistently prioritized technical excellence, safety, ethics, and regulatory compliance.

Vance’s core areas of expertise include olefin plant design and operations, with particular emphasis on furnaces and hot-side systems. His work focuses on maximizing the plant’s operating envelope while optimizing feedstock selection, cracking severity, and equipment lifecycle performance. Through this approach, he supports improved profitability while maintaining unit throughput, reliability, and the highest standards of safety.

Vance holds a B.S. in Chemical Engineering from the University of Missouri–Rolla and is a licensed Professional Engineer.