Jiwon CHOI

NIKKISO CE&IG (Nov 2023 – Present) | Design & Commissioning Engineer

• Reviewed and verified designs for liquefied hydrogen refueling stations, focusing on piping systems and control schemes.
• Prepared regulatory compliance documents and coordinated with inspection authorities in accordance with relevant laws and standards (e.g., KGS, High-Pressure Gas Safety Control Act).
• Created Bills of Materials (BOM) for piping and key components, managed procurement processes, and led vendor selection and technical negotiations.
• Collaborated closely with clients and the engineering team to resolve technical issues arising during design phases.
• Conducted commissioning activities for liquefied hydrogen refueling stations, including verification of control panels, I/O systems, and control logic through integration testing.
• Performed commissioning and troubleshooting for critical equipment such as hydrogen pumps, heaters, and valves.
• Optimized hydrogen refueling pressure and temperature control based on commissioning tests, ensured system stabilization, and supported client handover processes.
• Facilitated on-site technical coordination with multiple vendors and clients, providing prompt feedback and solutions to operational issues.

Gangrim Heavy Industries (May 2020 – July 2022) | Marine Equipment Design Engineer

• Methanol-powered vessel fuel tank design
  Established design directions and conducted technical consultations by analyzing specifications from shipyards and EPC clients.
  Performed strength analysis and safety reviews of structural designs according to relevant codes and standards (IMO, IGC, etc.).
  Engaged in comprehensive design tasks including preparation of fabrication drawings, quantity estimation, and specification writing.
  Managed class approval processes for drawings (KR, DNV) and incorporated design revisions accordingly.
  Maintained effective communication and collaboration with clients to address project schedules and technical issues.
• CO₂ scrubber component design
  Designed pressure vessels and piping components, conducted 3D modeling, and performed strength calculations based on client requirements.
  Prepared documentation and responded to technical inquiries for KGS (Korea Gas Safety Corporation) certification.
  Coordinated with external manufacturers to revise fabrication drawings and manage production schedules.
  Contributed to delivery time reduction and improved manufacturing efficiency through iterative design enhancements.