10+ Refinery Brownfield Projects — Electrical, Instrumentation & Controls Upgrades Freezer Engineering executed more than ten brownfield capital projects at Marathon's refinery, with a disciplined onsite​/​offsite program that placed our team at the facility one week per month — maximizing field efficiency while completing detailed engineering in Denver. The majority of projects centered on vessel replacements and ancillary equipment upgrades that were disproportionately electrical in nature. Our electrical scope consistently included transformer capacity upgrades, new switchgear installation, and arc flash study updates to reflect the modified power systems. Instrumentation and controls work involved adapting existing control systems and instrumentation to new vessel configurations, ensuring process continuity and regulatory compliance. A checklist-driven gap analysis methodology — comparing project goals against current system status — allowed the team to move quickly and accurately from field walkdown to IFC package. The program achieved zero field safety incidents and earned strong recognition from Marathon's operations and construction teams for both speed and quality of deliverables.

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DISCIPLINES & ENGINEERING SERVICES Electrical Engineering, Power Engineering, Instrumentation Engineering, Controls Engineering, Process Engineering, Mechanical Engineering, Piping Engineering, Civil Engineering, Structural Engineering, EPCM, Owner's Representative, Multi-Discipline Engineering, Full-Service Engineering, Brownfield Engineering, Greenfield Engineering, Front-End Engineering, Detailed Engineering, Construction Management, Procurement Management, Commissioning, Startup Support ELECTRICAL Single Line Drawings, Power Modeling, Power Calculations, Load Calculations, Power Distribution, Switchgear, Transformers, Arc Flash Studies, Power Simulation, Utility Coordination, Utility Connection Design, High Voltage, 345kV, 138kV, 35kV, 25kV, Solar Power, Battery Storage, Battery Flywheel, Gas Turbine Power Generation, Overhead Power Line, Electrical Load Requirements, IO Schematics, IO Lists, Panel Design, Power Transformers, Cable Tray Design, Electrical Specifications INSTRUMENTATION Pressure Safety Valves (PSV), Relief Valve Sizing, API 520, API 521, Overpressure Protection, Relief Flow Calculations, Instrumentation Design, Instrument Lists, Field Instrumentation, Tag and Nameplate Inspection, P&ID Development, P&ID Walk-Downs, PFD Review, Piping Specifications, Metering Systems, Metering Stations, Flow Metering, Cause & Effect Matrix, Gas Detection, Flame Detection, Field Documentation, As-Built Documentation, Reverse Engineering CONTROLS & AUTOMATION PLC Programming, HMI Development, SCADA, PlantPAx, ControlLogix, FactoryTalk, Allen Bradley, Automation Direct, Scadapack, Controls Migration, Controls Modernization, Legacy System Integration, ESD Systems, Emergency Shutdown, Safety System Design, Alarm Rationalization, Interlock Design, First-Out Diagnostics, Batch Recipe Management, Model Predictive Controls (MPC), Control Narrative, Cause & Effect, Startup​/​Shutdown Automation, Motor Monitoring, Network Architecture, Fiber Optic Network, Device Level Ring (DLR), Remote IO (RIO), HMI Screens, Historian, Trending INDUSTRIES & MARKETS Oil & Gas, Midstream, Upstream, Refining, Petrochemical, Data Centers, Hyperscale AI, Manufacturing, Industrial Facilities, Water Treatment, Produced Water, Mining, Potash, Solution Mining, Private Equity, Due Diligence FACILITY TYPES Data Centers, Compressor Stations, Compression Facilities, Refineries, Oil Terminals, Central Tank Batteries, Gas Plants, Saltwater Disposal (SWD), Meter Stations, Pipelines, Pump Stations, Injection Wells, Water Wells, Desalination Plants, Pilot Plants, Manufacturing Facilities PROJECT DELIVERY & METHODOLOGY Brownfield Projects, Retrofit, Remediation, Acquisition Integration, Due Diligence, Feasibility Studies, Design Basis, Gap Analysis, Checklist Methodology, Field Walk-Downs, Site Assessments, Constructability Review, PHA Facilitation, Safety Reviews, Design Standards, Technical Specifications, Drawing Standards, Scalable Design Platform, Standardization, Templates, 3D Modeling, Laser Scanning, BOM, ISOs TECHNICAL STANDARDS & COMPLIANCE API 520, API 521, ASME, Texas RRC, NFPA, Arc Flash (NFPA 70E), PlantPAx Standards, Tier 3 Uptime, Tier 4 Uptime, Regulatory Compliance, Permitting, AHJ Coordination, Environmental Site Assessment, Process Hazard Analysis (PHA) CLIENTS & END MARKETS Energy Companies, Oil & Gas Operators, Midstream Operators, Refiners, Private Equity, Hyperscalers, Data Center Developers, Mining Companies, Water Treatment Companies, Manufacturing Companies GEOGRAPHIES Texas, Wyoming, Colorado, New Mexico, North Dakota, Indiana, Bakken Basin, DJ Basin, Delaware Basin, Powder River Basin, Permian Basin, West Texas, Rocky Mountains, Continental USA VALUE PROPOSITIONS & DIFFERENTIATORS Zero Field Incidents, Safety Leadership, Scalable Design, Repeatable Execution, Field Decision-Making, Real-Time Engineering Support, Accelerated Delivery, Cost Optimization, NPV Optimization, Supply Chain Management, Vendor Management, Confidentiality, Multi-Discipline Coordination, Integrated Engineering, ROI Identification, Capital Efficiency, Operational Reliability, Single Point of Failure Elimination