Mijoo Choi, P.E.

• Delivered high-quality prototypes on time and under budget, accelerating product development timelines.
• Managed supplier relationships to ensure timely delivery of high-quality components at competitive prices while maintaining strong partnerships for ongoing collaborations.
• Reduced manufacturing costs through the implementation of innovative engineering solutions and streamlined production processes.
• Collaborated with cross-functional teams to ensure seamless integration of mechanical components within complex systems.
• Effectively developed models, assemblies and drawings using [Software] and [Software].

• Led research on innovative carbon capture, storage, and injection floating platforms, serving as the primary author of the technical publication.
• Directed research on engine retrofitting for alternative fuels, including methanol and ammonia.
• Provided technical support by addressing inquiries related to various onboard mechanical equipment and systems.

• Developed detailed designs and calculations for hull mechanical/marine packages of semi-submersible floating production systems (FPS), as well as conducted conceptual design studies for OPTI hull projects:

Shenandoah Project:

FPS facility with capability of producing 100,000 barrels of oil per day

King's Quay Project:

FPS facility with production capacity of 100,000 barrels of oil per day

• Led design and calculation of following systems:

Diesel Transfer

Bilge & Ballast

Vent and Sound

Potable Water Distribution

Chemical Transfer

Cathodic Protection

Ventilation

Firewater

Compressed Air

CO2 Fire Suppression

Material Handling Machines

Watertight Doors

Elevators

• Calculated required fluid dynamic system parameters using AFT Fathom

modeling, Pipe-Flo modeling, Mathcad, Excel, etc.

• Performed pipe stress analysis using CAESAR II modeling software
• Performed pump/fan/pipeline/nozzle sizing and material selection
• Performed valves/instruments/specialty items selection for piping systems
• Performed equipment/machinery selection and developed Request for Quotation (RFQ), Technical Bid Evaluation (TBE), Purchase Order (PO), etc.
• Calculated PSV sizing
• Developed "Engineering Reports," "Datasheets," and P&IDs
• Developed and approved "Piping Standards" and "Piping Specifications" utilizing extensive understanding of pipe materials, piping components, and pipe support design
• Developed "Line lists," "Equipment lists," "Valve lists," "Instrument lists," and "Miscellaneous item lists," etc.
• Reviewed Electrical/Instrumental drawings and “Cause & Effect chart”
• Prepared and reviewed "Design Basis" and "Design Philosophy Reports"
• Worked closely with drafter team to aid 3D modeling details in PDMS and reviewed ISOs
• Conducted in-depth studies and calculations related to ventilation and dehumidification systems in hull
• Developed “hull coating/painting procedure”
• Led study of cathodic protection plan for ballast tanks and ICCP systems for hull protection
• Collaborated closely with construction contractors and clients to share insights from "lesson-learned" design errors observed and documented during construction/commissioning phases

• Deployed to shipbuilding construction site to oversee mechanical completion, pre-commissioning, and commissioning phases
• Supervised a hull commissioning team of over 50 individuals for King's Quay Project
• Managed, planned and executed mechanical completion, pre-commissioning, and commissioning of hull mechanical/electrical/control/marine systems, including:

Diesel Transfer System

Bilge & Ballast System

Vent and Sound System

Potable Water Distribution System

Freshwater Wash-down System

Chemical Transfer system

Firewater System

Ventilation System

Impressed Current Cathodic Protection (ICCP) System

PAGA System

Fire and Gas System

Mooring System

Ballast Control System

Lighting Distribution System

Watertight Door System

Elevator System

• Witnessed on-site inspections and field testing, including mechanical, electrical, and instrumental equipment assessments within hull and topside integration points
• Assisted in structural inspections, encompassing tank hydro tests, paint inspections, NDE, WPS review, etc.
• Develop and reviewed "System Commissioning Test Procedures," "Regulatory Test Procedures," and "Commissioning Checklists"
• Strategized, prepared, and participated in "Regulatory Tests" alongside United States Coast Guard (USCG)
• Conducted "System Walkdown" of entire hull sub-system in collaboration with QA/QC team
• Proficiently issued Client Finding Items (CFIs) based on observations and promptly addressed Request for Information (RFIs)
• Orchestrated hull commissioning schedules to align with master schedule, ensuring on-time delivery
• Managed “Flange Management System” to ensure effective functioning and integrity of systems
• Enforced compliance with HSE policies, site regulations, and Permit to Work (PTW) procedures by overseeing safety meetings and PTW controls for all contractors and personnel
• Ensured strict adherence to latest "Approved for Construction" drawings, specifications, ITPs, procedures, and site instructions by contractors
• Managed interactions with hull/marine package vendors, including vendor call-outs, vendor surveys, kick-off meetings, witnessing Factory Acceptance Tests (FATs), conducting receiving inspections and reviewing Manufacturing Record Books (MRBs), spare parts lists, special tools lists, etc.
• Established and maintained repository of "Redline" drawings across all disciplines
• Supported preparation of incline tests and authored "Preservation procedures" for sail-away readiness

• Deployed to shipbuilding construction site at HHI (Ulsan, S Korea) and Kiewit(Ingleside, TX) to oversee a hull mechanical completion/pre-commissioning team for Delta House Project:

FPS with production capacity of 80,000 barrels of oil per day, this award-winning development has been recognized by Offshore Magazine as one of Top 5 Projects

• Successfully executed offloading of hull within one year from steel cutting date by efficiently coordinating pre-commissioning activities, ensuring timely completion within budget constraints
• Supervised and conducted comprehensive on-site inspections of structural, mechanical, piping, electrical, and instrumentation equipment within hull, including loop checks, megger tests, motor run tests, hydro-testing, and reinstatement, etc.
• Participated in pipe fitting inspections at pipe shop
• Participated in shop inspection of synthetic mooring rope fabrication
• Held responsibility for vendor interactions, involving vendor callout, attending Factory Acceptance Tests (FATs), conducting receiving inspections
• Provided comprehensive record of hull pre-commissioning status, including redlines, rework packages, etc.
• Assisted in incline test by successfully completing ballast control system commissioning

• Successfully completed in-house training program designed to enhance depth of knowledge in company business concepts and ongoing projects
• Reviewed and verified “Engineering Reports”, “Calculation sheet”, "P&IDs,", "Navisworks modeling for Delta House Project

• Served as a government agency employee to enhance the global competitiveness of small and medium-sized businesses.
• Conducted site visits for technical diagnostics at various companies to support the implementation of appropriate financial and non-financial programs.

• Served as HVAC engineer for workshop and living quarter design across various drillship series, overseeing projects including:

West Gemini (Seadrill)

Pacific Bora UDW (Pacific Drilling)

Saipem 12000 (Saipem)

Petrobras 10000 (Transocean)

• Designed comprehensive systems under hazardous area plan, including HVAC systems, Fire Protection plans, Insulation plans, Noise Control measures, and accommodation equipment layouts, ensuring full compliance with regulations
• Calculated air change rates to meet ISO 15138/SOLAS standards and determined heating/cooling loads for sizing Air Handling Units (AHUs).
• Created D&IDs by designing ductwork comprised of various components such as dampers, filters, fans and sensors.
• Developed practical construction solutions to address on-site constructability risks and created IFC drawings using 2D AutoCAD.
• Collaborated closely with the construction team to discuss mechanical completion methods for each piece of equipment.
• Conducted numerous on-site equipment installation inspections to ensure quality and anticipate potential future risks.
• Managed material purchase orders using SAP ERP to ensure efficient project material and inventory control.
• Performed advanced 3D modeling with PDMS for duct lines and HVAC equipment, facilitating design reviews to assess constructability and operability.