Mijoo Choi, P.E.

• Developed detailed designs and calculations for the hull mechanical/marine packages of the Shenandoah project: a Semi-submersible floating production system (FPS) facility with the capability of producing 100,000 barrels of oil per day
• Led the design and calculation of the following systems:

Diesel transfer

Bilge & Ballast

Ventilation and sound

Potable water distribution

Chemical transfer

Cathodic protection

Ventilation

Firewater

Compressed air

CO2 Fire suppression

Watertight doors

Elevators

Material handling machines

• Calculated required hydrodynamic design data using AFT Fathom modeling, Pipe-Flo modeling, Mathcad, Excel, etc., to develop "Engineering Reports," "Datasheets," and P&IDs, etc
• Collaborated closely with construction contractors and clients to explain design concepts and shared insights from "lesson-learned" design errors observed and documented during the construction/commissioning phases
• Reviewed Electrical/Instrumental drawings and “Cause & Effect chart.”
• Prepared and reviewed "Design Basis" and "Design Philosophy Reports."
• Developed and issued Request for Quotation (RFQ), Technical Bid Evaluation (TBE), Purchase Order (PO), etc
• Developed and approved "Piping Standards" and "Piping Specifications" utilizing an extensive understanding of pipe materials, piping components, and pipe support design
• Organized and issued lists such as "Line lists," "Equipment lists," "Valve lists," "Instrument lists," and "Miscellaneous item lists," etc
• Reviewed CAESAR II modeling for pipe stress analysis of Ballast/Bilge/Fire water systems
• Reviewed 3D modeling in PDMS

• Deployed to the shipbuilding construction site to oversee the mechanical completion, pre-commissioning, and commissioning phases
• Managed a hull commissioning team of over 50 individuals for the King’s Quay project: an FPS facility with a production capacity of 100,000 barrels of oil per day
• Planned and executed the mechanical completion, pre-commissioning, and commissioning of hull mechanical/electrical/control/marine systems, including:

Diesel transfer system

Bilge & Ballast system

Ventilation and sound system

Potable water distribution system

Freshwater washdown 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

• Orchestrated hull commissioning schedules to align with the master schedule, ensuring on-time delivery
• 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 the latest "Approved for Construction" dwgs, specifications, ITPs, procedures, and site instructions by contractors
• Collaborated closely with the commissioning team to develop and review "System Commissioning Test Procedures," "Regulatory Test Procedures," and "Commissioning Checklists."
• Strategized, prepared, and participated in "Regulatory Tests" alongside the United States Coast Guard (USCG)
• Observed on-site inspections and field testing, including mechanical, electrical, and instrumental equipment assessments within the hull and topside integration points
• Conducted "System Walkdown" of the entire hull sub-system in collaboration with the QA/QC team
• Assisted in structural inspections, encompassing tank hydro tests, paint inspections, and related activities
• Managed interactions with hull/marine package vendors, encompassing vendor callout, witnessing Factory Acceptance Test (FAT), receiving inspections, reviewing Manufacturing Record Books (MRBs), spare parts lists, special tools lists, vendor surveys, and kick-off meetings, etc
• Established and maintained a repository of "As-Built" drawings across all disciplines
• Supported the preparation of incline tests and authored "Preservation procedures" for sail-away readiness
• Supported the preparation of incline tests and authored "Preservation procedures" for sail-away readiness.

• Developed detailed designs and calculations for hull mechanical/marine systems for the King’s Quay project, as well as conducted conceptual design studies for OPTI hull projects
• Calculated fluid-dynamic system parameters, including pump/fan/pipe line sizing using Mathcad and AFT Fathom software
• Performed pump selection processes, encompassing centrifugal pumps, gear pumps, rotary lobe pumps, turbine pumps, and diaphragm pumps
• Led the conceptual study of the cathodic protection plan for ballast tanks and ICCP systems for hull protection
• Conducted in-depth studies and calculations related to ventilation and dehumidification systems
• Authored the mechanical system section of the "Operator’s Manual" and revised the "Construction Specifications" for future projects
• Generated various engineering documents, including "Engineering Reports," P&IDs, "Line Lists," "Equipment Lists," and "Valve Lists.", etc
• Supported the design team by reviewing ISOs (Isometric Drawings) and Navisworks models
• Developed and issued documents such as "Datasheets," RFQs (Request for Quotation), TBEs (Technical Bid Evaluations), POs (Purchase Orders), and reviewed "Vendor's Documents," as well as attended Factory Acceptance Tests (FATs).

• Deployed to the construction site at Kiewit shipyard to facilitate the post-integration commissioning phase of the Delta House project.
• Provided a comprehensive record of hull status and contributed to the successful execution of incline tests.

• Deployed to the shipbuilding construction site at HHI to oversee a hull pre-commissioning team of over 50 individuals for the Delta House project: an FPS with a production capacity of 80,000 barrels of oil per day, this award-winning development has been recognized by Offshore Magazine as one of the Top 5 Projects.
• Successfully executed the offloading of the hull within a year from the 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 the hull, including loop checks, megger tests, motor run tests, hydro-testing, and reinstatement, etc.
• Managed the "flange management system" to ensure effective functioning and integrity of the systems.
• Conducted thorough "system walk-downs" and facilitated the seamless "system hand-over" process.
• Participated in pipe fitting inspections at the pipe shop.
• Participated in a shop inspection of synthetic mooring rope fabrication.
• Held responsibility for vendor interactions, involving vendor callout, attending Factory Acceptance Tests (FATs), conducting receiving inspections, reviewing Manufacturing Record Books (MRBs), spare parts lists, special tools lists, vendor surveys, and participating in kick-off meetings for Inspection Test Plans (ITP) and related activities.

• Reviewed and verified the latest "Approved for Construction" drawings for the Delta House Project, including both hull and topside components, as well as "hull/machinery system calculations," "P&IDs," "Navisworks modeling," and other relevant documents.

• Served as the engineer for workshop and accommodation design across various drillship series, overseeing projects including:

West Gemini (Seadrill): A 6th generation ultra-deepwater drillship with a designed depth of 10,000 ft

Pacific Bora UDW (Pacific Drilling): An upgraded Samsung 10,000 design dynamically-positioned drillship

Saipem 12000 (Saipem): A 6th generation ultra-deepwater drillship with a designed depth of 12,000 ft

Petrobras 10000 - Drillship (Transocean): An ultra-deepwater dual-activity drillship with a designed depth of 12,000 ft

• Designed comprehensive systems, including HVAC systems, Fire Protection plans, Hazardous areas, Insulation plans, Noise Control measures, and Accommodation equipment layouts, ensuring full compliance with classification society regulations.
• Sized Air Handling Units (AHU) and duct lines, calculating air change rates to adhere to ISO 15138/SOLAS standards.
• Conducted on-site equipment installation inspections.
• Managed materials and inventory using SAP ERP, ensuring efficient project control.
• Generated Detailed Piping and Instrumentation Diagrams (D&IDs) using 2D AutoCAD.
• Executed advanced 3D Modeling using PDMS for both duct lines and HVAC equipment within the system.