Global Engineering Excellence

Accelerating the transition to a better energy future

Citadel Engineering Company is thrilled to be part of this year's SPE Offshore Europe exhibition in Aberdeen from September 2-5.

We invite you to come and explore our latest engineering solutions, innovative technologies, and world-class expertise.

Where is it?

With its proximity to the North Sea Production Hub, Aberdeen in Scotland has been the perfect location for SPE Offshore Europe for nearly 50 years, and in 2019 it moved to the new state-of-the-art venue, P&J Live.

Aberdeen is the energy capital of Europe and has cemented itself as a leading center of research and development for subsea technology and expertise. Production techniques and operations technologies developed in Aberdeen are used in oil and gas fields all over the world, setting a global standard.

Citadel Engineering Company:

Where Precision Meets Reliability

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Our Services

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Citadel Engineering Company is at the forefront of engineering innovation. We bring together cutting-edge technology, expert knowledge, and a passion for problem-solving to design and execute projects that shape industries and drive progress.



Our inspection services are the bedrock of safety and quality assurance. We leverage advanced techniques and industry expertise to provide unbiased evaluations of equipment, facilities, and processes, ensuring compliance with standards and regulatory requirements.

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Precision is paramount in all industries. Our calibration services guarantee the accuracy and reliability of a wide range of equipment, from flow meters to control systems, minimizing risk and maximizing operational efficiency.

who we are?

Citadel Engineering Company is a global leader in providing innovative Engineering, Inspection, Calibration, and Sustainability solutions. With a strong commitment to excellence and sustainability, we have rapidly become a trusted name in the TIC Industry.

Our journey began in 2015 in the United States, primarily focusing on Engineering, Calibration, and Inspection Services. Over the years, we expanded our operations globally, establishing a strong presence in Europe, the Middle East, and beyond. This expansion allowed us to serve a diverse range of industries and clients with precision and reliability.

In 2019, we rebranded as Citadel Engineering Company (CEC), solidifying our reputation as a world-renowned, Independent Inspection Service Provider. Today, our company operates across five business segments spanning four geographical regions, generating substantial revenue and becoming one of the largest grain engineering companies in the Middle East.

Our commitment to sustainability runs deep in our DNA. Citadel Scientific Company, our subsidiary, leads the charge in renewable and green energy solutions, focusing on Metering Skids, Power Plants, Combined Cycles, and Skid Design and Manufacturing. Sustainability is not just a goal; it's a driving force behind everything we do.

#CitadelEngineering #EngineeringExcellence #Sustainability



CITADEL Engineering Company (CEC) is honored to announce its official recognition as a trusted Calibration Lab for Fiscal & Custody Transfer Flow Meters by the Ministry of Oil of Iraq. Recently, a delegation from the Ministry visited our state-of-the-art facility in Erbil, Iraq, where they conducted a meticulous inspection of our fabrication and calibration capabilities.

During their visit, Ministry of Oil representatives had the opportunity to explore our cutting-edge equipment, including Master Meter Provers, Water Draw Packages, and Pipe Provers. Engaging in in-depth technical discussions with our dedicated engineers and technicians, they gained valuable insights into our calibration processes and expertise.

CEC extends its sincere appreciation to the Ministry of Oil for its insightful and collaborative visit. We are committed to maintaining the highest standards of calibration excellence and ensuring the utmost accuracy and reliability in Flow Meter calibration.

At Citadel Engineering Company (CEC), our Calibration Facility stands as a testament to our dedication to precision. We utilize industry-leading tools such as Master Meters, Water Draw Calibration systems, and Compact Provers. Moreover, our facility is equipped to handle the repair and maintenance of Flow Meters and Provers.

Thank you for trusting us as your calibration partner. We look forward to continuing our journey of excellence and serving your calibration needs with utmost precision and reliability.


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Our metering engineering and design services are geared towards delivering tangible value across every project phase, from conceptual design to steady-state operations. We excel in meter selection, verification, and installation to enhance the efficiency of production facilities. By ensuring the right meter type, proper installation, operation, maintenance, and precise calibration, we empower our clients to optimize revenue and profitability.


We specialize in Welding Inspection, QA/QC, API Inspection, Vendor Inspection, Pipeline Inspection, Drilling Equipment & Piping Inspection, Plant Inspection, and NDT Services. Our comprehensive range covers VT, MT, PT, UT, and advanced NDT methods like Phased Array and TOFD. We also provide Lifting Equipment Inspection with four Gamma Sources, crawler technology, and Digital Radiography. Trust us to ensure the utmost safety and quality in your operations.


Our ISO/IES 17025 accredited laboratories provide calibration services for a wide range of equipment, including PSV and PRV, Pressure Gauges, Electrical Equipment, Radiography Equipment, Dosimeters, Survey Meters, Dimension Tools, Mass Items, Load Cells, Flow Meters, Multimeters, Clamp Meters, Milliamp Meters, and Resistance Earth Testers. Additionally, CEC has partnered with two labs in the USA and the UK, both accredited by UKAS and NVLAP, to further enhance our calibration capabilities.

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At Citadel Engineering Company, we understand that instruments can face wear and tear or accidental damage, and replacing them isn't always the most feasible solution. That's why we've established our Repair Center within our state-of-the-art calibration lab. Here, we provide cost-effective repair services for a wide range of instruments that we also calibrate. Our repairs are not only budget-friendly but also typically faster than those offered by OEMs. Plus, all repaired instruments receive an accredited calibration, ensuring they operate at peak performance.

Trust us for instrument maintenance that keeps your operations running smoothly.

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Pressure Safety Valves (PSVs) are vital guardians of pressure vessels and piping systems, ensuring they don't succumb to excessive internal pressure. When a system hits a predetermined pressure threshold, the PSV springs into action by opening, releasing some of the media, and reducing the pressure to a safe level. Once it returns to the valve's reseating set point, the valve closes securely.

Regular testing and fine-tuning of PSVs are imperative for upholding safety across various industries, including Oil & Gas, Power Generation, Water/Wastewater, Aerospace/Aviation, Chemicals/Plastics, Steel Manufacturing, and more. The most common testing approach involves bench tests conducted within a workshop setting. These tests usually coincide with disassembly, inspection, and repair procedures, ensuring PSVs remain reliable safeguards.

Offshore the Industry Oil and Gas


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We offer an extensive suite of Non-Destructive Testing (NDT) Services, setting the industry standard for precision and reliability. Our comprehensive NDT portfolio includes Visual Testing (VT) for surface defect detection, Ultrasonic Testing (UT) for uncovering hidden material flaws, Penetrant Testing (PT) to identify surface-breaking defects, and Magnetic Testing (MT) for flaw detection in ferrous materials. Radiography Testing (RT) uses X-rays or gamma rays for internal structure examination. Our advanced Phased Array (PAUT) technology ensures precise, multi-angle inspections, while IRIS Inspection guarantees unrivaled accuracy in tube and pipe integrity assessment.

Experienced Commissioning Team: Our expert team oversees the installation, testing, and calibration of systems in your plant or equipment. We provide vital support to your processes, ensuring optimal functionality and performance.

At Citadel Engineering Company, our seasoned Commissioning Team plays a pivotal role in your project's success, diligently overseeing the installation, conducting rigorous testing, and precise calibration of systems within your plant or equipment. With their wealth of expertise, they offer invaluable support to your processes, guaranteeing the seamless functionality and peak performance of your critical assets.

Citadel Engineering Company is your trusted partner for a comprehensive array of control solutions, including Wellhead Control Panels designed to optimize wellhead operations with precision control over pressure, temperature, and flow, Chemical Injection Systems tailored to your specific needs, ensuring equipment integrity and extending infrastructure lifespan while minimizing environmental impact, as well as state-of-the-art Emergency Shutdown Devices prioritizing safety, swiftly responding to critical situations to safeguard personnel, equipment, and the environment; and Precision Measurement Instruments, ranging from flow meters to pressure gauges.

Custody Transfer Meter Proving Services

Flow metering is classified based on its purpose, with five levels of accuracy ranging from fiscal metering to indication. For Class I, which is used for taxation and royalties, the metering must meet special requirements. For Class II, which is for invoicing, the measurement must comply with the API Manual on Petroleum Measurement, with compensation for temperature and pressure provided. Turbine meters are recommended for flow rates exceeding 16,000 m3/d, while PD meters are recommended to operate between 30% and 80% of nameplate rating. For Class III, meter proving is not required, and the calculation may be carried out in the FCS. Orifice plates can be used for Class IV and Class V metering.

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CEC Product Catalogue

Citadel Engineering Company offers a range of high-quality products for metering system equipment, instruments, and special tools. Take a look at our selection below:

  • Bi-Directional Pipe Prover (Stationary and Portable)
  • 4Way Valve (Hydraulic & Electrical)
  • Sampling System
  • Static Mixer
  • Basket Strainer and Straightener
  • Inflatable Seal, Inflation Pump, Removal Tools, Detector Switch

Choose CEC for all your metering system needs.

Engineering Services

  • Feasibility Studies and Project Planning
  • Detailed Engineering Design & Analysis
  • Process Engineering & Optimization
  • Equipment Selection & Specification
  • Structural Engineering & Analysis
  • Electrical & Instrumentation Engineering
  • Civil & Architectural Design
  • Environmental Impact Assessments
  • 3D Modeling & Visualization
  • Value Engineering & Cost Reduction
  • Risk Assessment and Management
  • Construction Management & Supervision


Are you ready to dive into the world of cutting-edge energy solutions? Look no further!

We're thrilled to invite you to visit our booth at the upcoming SPE Offshore Europe Conference and Exhibition in Aberdeen!


  • Feasibility Studies and Project Planning
  • Detailed Engineering Design & Analysis
  • Process Engineering & Optimization
  • Equipment Selection & Specification
  • Structural Engineering & Analysis
  • Electrical & Instrumentation Engineering
  • Civil & Architectural Design
  • Environmental Impact Assessments
  • 3D Modeling & Visualization
  • Value Engineering & Cost Reduction
  • Risk Assessment and Management
  • Construction Management & Supervision

LACT Services

Services related to Lease Automatic Custody Transfer (LACT)

Custody transfer measurement services

Accuracy in hydrocarbon measurement

Calibration and testing of LACT units

Flow meter calibration for custody transfer

Compliance with API MPMS standards

Installation and Commissioning

Updating and retrofitting control systems for pump stations and metering skids

Development of Distributed Control System (DCS) based control systems

Replacement of outdated control systems to improve efficiency and reliability

Ensuring the smooth operation of pump stations through technological enhancements

Services related to Lease Automatic Custody Transfer

Accuracy in hydrocarbon measurement

Maintenance and Repair:

Comprehensive equipment maintenance services

Maximizing equipment lifespan and performance

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Company policies and procedures establish the rules of conduct within an organization, outlining the responsibilities of both employees and employers. Company policies and practices are in place to protect the rights of workers as well as the business interests of employers. Citadel Engineering Company follows international compliance and integrity systems as per TIC council requirements, CEC Regulations and government requirements.

Process Compliance is Critical for all Businesses

Regardless of industry, the compliance function is responsible for ensuring that the company’s policies and procedures are designed to comply with internal policies, applicable laws and regulations, and ensuring that those policies and procedures are followed. There’s a lot more that goes into compliance management, of course, but that’s the essence.

Pressures On Compliance Professionals

In addition, the scope of a compliance professional’s purview continues to evolve as corporate boards, and executive leadership teams are forced to deal with new threats and pressures, often looking to the compliance function to provide guidance. Meanwhile, the decisions compliance professionals make need to remain “business-friendly” with as little impact on revenue and growth as possible.

Compliance professionals today must focus on addressing a striking array of compliance issues.


Safety Valve Services

  • Inspection and testing of safety relief valves
  • Valve maintenance and repair services
  • Calibration of pressure relief devices
  • Troubleshooting and diagnostics
  • Emergency valve replacement services
  • Compliance with API and ASME standards
  • Documentation of valve condition and performance
  • Valve replacement planning and execution
  • Pressure relief system design and optimization
  • Relief valve certification and recertification
  • Technical support for pressure relief systems
  • Valve performance analysis and reporting
  • Training on safety valve operation and maintenance





Calibration Lab Accreditation ISO/IEC 17025-2017

Corporate Member of API ( American Petroleum Institute )

Quality Management System - ISO 9001:2015 ( API )

API Specification Q2

Inspection Accreditation Body - Cat. A - ISO/IEC 17020-2012

ISO/TS 29001: 2010

ISO 9001:2015

ISO 45001: 2018

ISO 14001: 2015

D&B D-U-N-S Registered

IADC Member

IWCF Member

CPD Accredited Center

OSHA Academy Accredited Center

Scaffolding Accreditation Training Center

ASNT Corporate Member

Join Our Team at

Citadel Engineering Company!

Are you ready to embark on a rewarding career journey? Citadel Engineering Company is on the lookout for talented individuals like you to join our dynamic team. We have exciting opportunities for various roles, including Inspection Engineer, NDT Technician, Coating Inspector, Welding Inspector, and more!

Explore our open positions and submit your tender through the link below

Can't submit through the link? No worries! You can also send your resume and qualifications directly to

Join us in shaping the future of engineering and innovation.

Your expertise is the missing piece we've been searching for!

#JobOpportunities #EngineeringCareers #JoinOurTeam

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We Build Trust, Not Just Infrastructure

454 s 700 e, salt lake city

Utah, 84107


+1 ( 385) 265 1707