350+
Company-wide degreed engineers, licensed professional engineers, and technical professionals
Full Lifecycle
FEED through engineering, integration, commissioning, and ongoing support
Vendor-Neutral
Control and automation solutions aligned to owner requirements
Nationwide
Engineering and technical resources located across the United States
Engineering for the Midstream Lifecycle
1991
Established in Long Beach, California
350+
Technical professionals across Mangan
9
Office locations across the United States
Mangan provides midstream engineering and automation services for pipelines, compressor and pump stations, terminals, tank farms, gas processing plants, and NGL fractionation facilities. The multidisciplinary team supports owners from front-end definition and detailed design through controls implementation, systems integration, commissioning, and long-term operations. Process, instrumentation, electrical, and controls, power engineering, safety, software, and commissioning resources work within one coordinated delivery model. This allows engineering decisions to stay connected to automation architecture, construction requirements, startup sequencing, and the operating realities of the facility. Mangan supports both greenfield developments and brownfield modernization, including legacy-system discovery, sequenced cutovers, testing, startup and commissioning, and continued support.
- Process engineering
- Instrumentation and electrical
- Power engineering
- Control systems and automation
- Functional safety and OT networks
- Commissioning and operational support
Midstream Facilities We Support
Mangan supports the engineering, automation, measurement, and operational systems that connect midstream assets and keep them operating as an integrated network.
Terminals & Tank Farms
Crude oil and refined-product storage, blending, truck, rail, marine, and pipeline transfers, plus terminal automation, scheduling, ticketing, inventory, measurement, and business-system integration.
Gas Processing & Fractionation
Cryogenic processing, gas treating, NGL recovery and fractionation, DCS and HMI engineering, advanced controls, modernization, FAT, startup, and commissioning.
Specialized Midstream Operations
Operational management systems, measurement and proving support, OT networks and cybersecurity, process analyzers, CEMS, terminal software, and control-to-business integration.
From Front-End Definition to Operational Support
Mangan connects early engineering decisions to detailed design, system configuration, construction support, commissioning, and the needs of the operating facility.
Front-End Engineering & Consultation
Feasibility, site investigation, requirements definition, basis of design, functional specifications, estimates, and execution planning.
Detailed Engineering & Design
Process, power, instrumentation, electrical, controls, panel, network, drawing, and construction-package development.
Automation, Configuration & Integration
DCS, PLC, SIS, SCADA, HMI, historian, application, network, device, and business-system integration.
FAT, Construction Support & SAT
Factory testing, procurement coordination, field support, point-to-point testing, functional testing, and site acceptance.
Startup & Commissioning
Loop checks, device configuration, troubleshooting, process tuning, cutover execution, startup, and commissioning.
Ongoing Operations & Support
Maintenance, system support, minor projects, facility changes, measurement consultation, and operational improvements.
Integrated Midstream Engineering Capabilities
Each capability supports the same objective: carrying owner requirements from engineering definition into a tested, commissioned, and operable facility.
Front-End Engineering & Consultation
Front-end work establishes the technical basis, functional intent, system architecture, and execution path before detailed design begins.
- Feasibility and site investigations
- Requirements and basis of design
- Functional specifications and sequencing
- Data flow and control architecture
- Project estimates
- Execution strategies
Power Engineering & Design
Mangan supports electrical power requirements from equipment definition and system analysis through automation and construction support.
- Power engineering
- Electrical equipment specification
- Power-system analysis
- Arc-flash mitigation
- Substation automation
- Construction support
Instrumentation, Electrical & Controls
Detailed IE&C scope connects process intent to field devices, panels, wiring, drawings, and installation work packages.
- P&IDs and I/O definition
- Control panels and field wiring
- Loop drawings
- Conduit and cable schedules
- Electrical schematics
- One-line diagrams
Automation & Control Systems
Mangan engineers and integrates control environments around functional requirements rather than a predetermined platform.
- DCS, PLC, SIS, SCADA, and HMI
- Historian and application development
- Programming and configuration
- FAT and SAT
- Cutover planning
- Startup and commissioning
Operational Management Systems
Operational systems connect terminal movements, measurement, planning, controls, and commercial workflows.
- Truck, rail, marine, and pipeline transfers
- Scheduling and forecasting
- Inventory and reporting
- Contracts and invoicing
- Measurement integration
- Controls and business-system integration
Advanced Process & Regulatory Control
Mangan’s documented experience includes advanced control strategies for throughput, composition, equipment protection, and efficiency.
- Model Predictive Control
- Plant Rate Processing Management
- C1/C2 and CO2 control
- Cold-spin protection
- Chiller efficiency management
- Existing-system implementation
OT Network & Cybersecurity
OT network architecture, communications, and cybersecurity are integrated where they support control-system reliability and facility requirements.
- OT network architecture
- Industrial communications
- Controls network consultation
- Gap and vulnerability assessments
- Resiliency testing and readiness training
- Documentation, compliance, and remediation
Startup, Commissioning & Support
Mangan bridges engineering and operations through field testing, cutover, startup, commissioning, and continued technical support.
- Wiring and loop checks
- Device configuration
- Point-to-point and functional testing
- Troubleshooting
- PID and process tuning
- Ongoing support
Vendor-Neutral Automation Built Around the Owner
Vendor neutrality lets control architecture, platform selection, integration, and migration planning follow the owner’s functional and operational requirements. Mangan supports control environments across DCS, PLC, SIS, SCADA, HMI, and historian systems, including integration between multiple platforms and third-party devices.
DCS
PLC
SIS
SCADA
HMI
Historian
Greenfield Systems
System design, procurement, configuration, application development, integration, FAT, commissioning, and operational handoff.
Brownfield Modernization
Legacy-system discovery, reverse engineering, multi-platform integration, sequenced migration, cutover planning, SAT, and commissioning.
Representative Midstream Project Experience
Mangan supports projects ranging from targeted facility upgrades to major greenfield infrastructure and control-system modernization programs.
Terminals & Tank Farms
Terminal & VLCC Berth Expansion
- Ingleside, Texas
- Existing crude oil terminal
Power and control systems for expanded valve manifolds, additional tankage, inbound pipeline connections, VLCC loading berths, construction, and commissioning.
Greenfield Tank Farm
- 7 tanks
- Over 50 Mbbl/hr
- 35 Mbbl butane sphere
Seven-tank gasoline, butane, and naphtha blending and storage system. Mangan provided process consultation, electrical, panel, and network design, PLC, HMI, TMS application and business-system integration, and commissioning.
Greenfield Terminal
- 7 tanks
- Truck, pipeline, and rail
Mangan provided process consultation, electrical and panel design, PLC, HMI, tank management, scheduling, ticketing, historian, corporate-system integration, system integration, and commissioning.
Pipeline Assets
Pipeline Origination Facility
- 36-inch and 40-inch pipelines
- 70+ valves
- 8 meters
- 2 provers
Controls and measurement upgrade with process consultation, electrical and panel design, PLC, HMI, applications, corporate integration, system integration, and commissioning.
Pipeline Injection Facility
- 36-inch and 40-inch pipelines
- 35+ valves
- 6 meters
- 2 provers
Mangan provided process consultation, electrical and panel design, PLC and HMI development, customer and corporate integration, system integration, and commissioning for the controls and measurement upgrade.
End-of-Line Delivery Facility
- 65+ valves
- 2 meters
- 1 prover
Mangan provided process consultation, electrical and panel design, PLC and HMI development, customer and corporate integration, system integration, and commissioning.
Mainline Take-Off Delivery Facility
- 36-inch and 40-inch pipeline
- 12 valves
- 1 meter
- 1 compact prover
Mangan provided process consultation, electrical and panel design, PLC and HMI development, customer and corporate integration, system integration, and commissioning.
Gas Processing & Fractionation
Cryogenic Natural Gas Processing Facility
- 7 trains
- SCADA/HMI consolidation
Operations and network consultation, E&I design, controls and HMI procurement and development, FAT, SAT, startup, commissioning, and continued maintenance and support.
Brownfield Controls Modernization
- Approximately 3,800 I/O
- Legacy obsolete DCS
Complete controls upgrade with DCS engineering, high-performance HMI, virtualized deployment, FAT, SAT, third-party integration, sequenced migrations, cutovers, and commissioning.
Greenfield NGL Fractionator
- Modern DCS
- Segregated PCS/SIS
System design, control-system procurement, DCS engineering, HMI development, FAT, third-party network and device integration, and commissioning.
Why Midstream Operators Work With Mangan
Multidisciplinary
Engineering
Process, power, instrumentation, electrical, controls, safety, software, and commissioning resources work within a coordinated delivery team.
Vendor-Neutral
Automation
Architecture and technology choices follow owner functional and operational requirements rather than a predetermined platform.
Brownfield +
Greenfield Experience
Mangan supports new facilities as well as legacy discovery, modernization, integration, sequenced migration, and cutover work.
Engineering Through
Operations
The team remains engaged through testing, startup, commissioning, operational handoff, maintenance, and ongoing technical support.
Midstream Engineering Questions
Direct answers to common technical and procurement questions about Mangan’s midstream engineering, automation, and commissioning scope.
What midstream facilities does Mangan support?
Mangan supports pipelines, pump and booster stations, compressor stations, metering facilities, terminals, tank farms, gas processing and treating plants, NGL fractionation facilities, and related midstream operations.
Does Mangan provide pipeline automation and SCADA engineering?
Yes. Mangan supports PLC, HMI, historian, SCADA, measurement, proving, automated-valve, integration, and commissioning scope for pipeline origination, injection, take-off, and delivery facilities.
Does Mangan support brownfield midstream projects?
Yes. Mangan supports operating-facility upgrades, equipment additions and removals, controls modernization, reverse engineering, planned cutovers, testing, commissioning, and continued support.
Does Mangan provide startup and commissioning support?
Yes. Services include wiring and loop checks, device configuration, point-to-point testing, functional testing, troubleshooting, process tuning, startup, commissioning, and ongoing technical support.
Can Mangan integrate operational systems with business systems?
Yes. Published terminal and pipeline projects include application development, scheduling, ticketing, historian, customer or corporate-system integration, terminal management, and controls-to-business integration.
Can Mangan support both FEED and detailed engineering?
Yes. Mangan’s documented scope includes front-end engineering and consultation, feasibility and site work, requirements definition, detailed multidisciplinary engineering, construction support, and commissioning.
Can Mangan modernize legacy DCS and PLC systems?
Yes. Published project experience includes legacy-system discovery, complete controls upgrades, virtualized DCS deployment, high-performance HMI development, third-party integration, sequenced migrations, cutovers, and commissioning.
What terminal automation capabilities does Mangan provide?
Mangan’s documented terminal scope includes PLC and HMI development, TMS applications, scheduling, ticketing, inventory, historian, measurement, business-system integration, system integration, and commissioning.
Is Mangan vendor-neutral when selecting automation platforms?
Yes. Mangan describes a vendor-neutral approach that aligns automation architecture and technology with owner requirements, facility functions, and the existing operating environment.
Planning a Midstream Project?
Mangan can engage during front-end definition, detailed engineering, modernization, system integration, testing, startup, commissioning, or ongoing operational support.