Refining Industry Solutions
The refining sector faces increasing demands for cleaner, faster, and more efficient operations while complying with stringent safety and environmental standards. At A-ONE Engineering Consultant LLC, we provide expert engineering and consulting services tailored to optimize refinery operations from initial design to performance enhancement and turnaround management.
Our expertise covers both greenfield projects and brownfield upgrades, helping clients improve safety, sustainability, and profitability. With decades of multidisciplinary experience, we deliver practical, data-driven solutions for the most complex refining challenges.

Our Specialized Services
Front-End Engineering Design (FEED) & Detailed Engineering:
We develop comprehensive FEED and detailed engineering for key refinery units like CDU, VDU, FCC, and hydrocrackers. Services include PFDs, P&IDs, heat & material balances, equipment sizing, instrumentation design, 3D modeling, and material selection to tackle corrosion and ensure safety.
Process Optimization & Revamp Engineering:
We enhance throughput, reduce emissions, and boost profitability by addressing aging infrastructure and bottlenecks—through debottlenecking, catalyst management, heat exchanger improvements, advanced process controls, and digital twin integration.
Turnaround, Shutdown & Maintenance (STO) Planning:
Our precise STO planning minimizes downtime and maximizes asset reliability by managing scope, inspections, repairs, scheduling, contractor coordination, manpower, safety oversight, and post-shutdown benchmarking.
Asset Integrity, Reliability & Safety Engineering:
We ensure asset health and process safety with RBI, corrosion assessments, mechanical integrity audits (API standards), Root Cause Failure Analysis, fitness-for-service evaluations, HAZOP, SIL, LOPA studies, and fire/gas detection system design.
Industries & Clients We Serve
We cater to crude oil refineries, petrochemical complexes, EPC and PMC firms, storage terminals, tank farms, government entities, and international joint ventures delivering tailored solutions to complex refining projects worldwide.
Why Choose A-ONE Engineering Consultant LLC?
With deep industry expertise and a multidisciplinary team, we offer comprehensive, client-focused engineering solutions that enhance refinery performance, safety, and sustainability while meeting unique project requirements and regulatory standards.
Curricular Economy
More fuel-efficient aircraft. More direct and on-time flights. Safer skies and airports. We're found on virtually every commercial, defense and space aircraft.
Energy & Climate
Since 2010, our facilities have implemented more than 4,300 efficiency projects including building automation and controls, lighting and mechanical upgrades, saving more than $80M (annualized).
Operations
Over 100 years ago, we defined energy efficiency by making indoor comfort automatic. Today, we redefine it in 10 million buildings using our technology.
Human Rights
Each year, we keep over half a billion workers safer and more productive with voice-enabled software, barcode scanners, mobile computers and protective equipment.
Conflict Minerals
We pioneered automation control. So we understand complex industrial facilities, and how to create high-quality and high-performance chemicals and materials.
Natural Infrastructure
We provide resources and financial support to causes around the world and encourage employee volunteerism.
Sustainability in Action

Executed Project
As the global energy industry steadily transitions toward more sustainable practices, Client Energy Refinery has emerged as a…

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HanesBrands Awarded Ninth
Colorful, informative and inspirational, the semi-annual trend report is available.
Sustainability Report
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