We provide innovative solutions for the integrity assessment and management of unpiggable lines
Canchuks Corrosion Inc is a renowned materials and corrosion engineering company that offers broad range of services for the oil and gas industry. Canchuks Corrosion Inc is dedicated to exceeding clients’ expectations and optimizing life of their assets
Canchuks Corrosion Inc is a renowned materials and corrosion engineering company
At Canchuks Corrosion Inc, we offer broad ranges of services for the oil and gas industry. Canchuks Corrosion Inc is dedicated to exceeding clients’ expectations and optimizing life of their assets.
Tell us about your project
We offer advance solution to corrosion problems with our experienced engineers. Get in touch.
OUR SERVICES
A safety-conscious Corrosion company
At Canchuks Corrosion Inc, we maximize the quality of services offered to the corrosion and pipeline industry’s growing demands and requirements. Reach out today so that our dedicated team would address your need and exceed your expectations.
Corrosion, Materials Selection & Engineering
Pipeline Integrity Services
Training
Research
Frequently Asked Questions
Unpiggable Pipelines & Integrity Assessments
What services does Canchuks Corrosion Inc offer?
Canchuks delivers specialized expertise in corrosion engineering, pipeline integrity, and advanced inspection for unpiggable pipelines. Our capabilities include CMIT technology deployment, materials selection, corrosion analysis, integrity assessments, and compliance-based evaluations.
What makes a pipeline “unpiggable” and how can it still be inspected?
Pipelines are classified as unpiggable when physical limitations or operational constraints prevent the use of traditional inline inspection tools. To assess these assets, we deploy advanced surface-based technologies such as Contactless Magnetic Inspection Technology (CMIT), enabling comprehensive integrity evaluations with minimal operational disruption. In addition to CMIT, our team has extensive expertise in Direct Assessment (DA) methodologies—including External Corrosion Direct Assessment (ECDA), Internal Corrosion Direct Assessment (ICDA), and Stress Corrosion Cracking Direct Assessment (SCCDA)—to ensure reliable evaluation of unpiggable pipelines.
How do you assess the integrity of unpiggable pipelines without traditional pigging tools?
We employ non-intrusive technologies such as Contactless Magnetic Inspection Technology (CMIT), complemented by geospatial mapping, historical performance data, and field assessments, to generate reliable integrity profiles without inserting tools inside the pipeline. For a holistic assessment of buried unpiggable pipelines, CMIT is integrated with Direct Assessment (DA) methodologies to enhance accuracy and increase confidence in integrity decisions.
For example, in Internal Corrosion Direct Assessment (ICDA), the Internal Corrosion Prediction Model (ICPM) is used to identify locations with potential water or solid accumulation and estimate internal corrosion rates. CMIT is then deployed to confirm the presence of metal loss at these predicted sites, strengthening the overall assessment.
Similarly, in Stress Corrosion Cracking Direct Assessment (SCCDA), susceptibility is first predicted, and CMIT is used to verify the existence of cracks, providing direct confirmation.
In External Corrosion Direct Assessment (ECDA), cathodic protection (CP) survey data is used to evaluate protection effectiveness, while coating surveys (e.g., DCVG, ACVG, ACCA) identify coating anomalies. CMIT further validates whether these CP deficiencies or coating damages have resulted in measurable metal loss, cracking, or stress anomalies.
By combining CMIT with DA methodologies, both confidence and accuracy in integrity assessments are significantly improved.
What is CMIT (Contactless Magnetic Inspection Technology) and how does it work?
CMIT is a surface-based magnetic inspection technology that detects stress, wall loss, and metal degradation in ferrous pipelines. It works by identifying magnetic field non-uniformities through contactless scanning, enabling precise defect localization, characterization, and ranking.
What pipeline material can be inspected with CMIT?
CMIT is designed for ferromagnetic pipelines—most commonly carbon steel used in oil and gas transportation. It is also suitable for ductile iron and cast-iron pipelines commonly found in the municipal sector. However, it is not applicable to non-ferrous or plastic materials.
What are limitations of CMIT?
Based on proven field deployments and real-world case studies, CMIT is most effective when applied to:
- Buried pipelines with a depth of cover less than 5 m (16.4 ft).
- Pipeline diameters of 6 inches and above
How deep of a pipeline can the CMIT inspect?
CMIT delivers optimal detection sensitivity on pipelines buried at depths of less than 5 m (16.4 ft).
How big of a pipeline can be inspected with CMT?
Optimal performance is achieved on pipelines 6 inches (150 mm) in diameter or larger.
How long of a pipeline can be inspected with CMIT?
Production rates depend heavily on right-of-way conditions:
- Under ideal conditions—flat terrain with no obstructions—the field team can collect between 4 to 8 km (2.5 to 5 miles) of data per day.
- Actual productivity may vary based on site logistics and accessibility constraints.
What type of defects can CMIT identify?
“CMIT detects metal loss (both internal and external), crack-like defects, discontinuities, weld joint defects, geometric anomalies, stress-induced deformations (such as sags, deflections, and landslip effects), and other imperfections that produce measurable variations in the magnetic field.”
How long does it take to get results when deploying CMIT?
Inspection reports are delivered within 5–10 business days after the inspection is completed, including defect classification and recommendations.
Does CMIT work on coated pipelines?
Our CMIT technology can identify, characterize, and prioritize pipeline defects in coated, submerged, or buried pipelines—all without any surface preparation.
How do you deploy CMIT in the field?
Technicians carry the magnetic sensor (scanner) while walking along the pipeline right-of-way. Before CMIT deployment, the pipeline is located and flagged, allowing the field team to focus on efficient data acquisition. CMIT scanners can also be mounted on wheeled carts or custom carriers to traverse the pipeline corridor. Deployment requires access to the pipeline route, surface clearance, and alignment with known pipeline markers. CMIT inspections do not disrupt operations, including cathodic protection systems.
What results or ROI can clients expect from unpiggable pipeline assessments with us?
Clients gain a clear integrity snapshot of otherwise inaccessible assets. Our
assessments help reduce risk, optimize maintenance, and support regulatory
compliance, often resulting in cost savings on repairs and downtime.
How do pipeline geohazards affect integrity assessments for unpiggable assets?
Geohazards such as soil movement, flooding, and freeze-thaw cycles can impose stress on buried pipelines. Our assessments incorporate these geotechnical risks, supporting predictive integrity planning.
What training do I need to benefit from CMIT?
No client-side training is required, as our team manages deployment, data acquisition, and analysis. However, we offer technical workshops for clients interested in the methodology and its applications in decision-making
Can you provide solutions for abandoned or decommissioned pipelines?
We assess the structural condition and environmental risks of out-of-service pipelines using CMIT and site-specific studies, supporting safe decommissioning or repurposing decisions.
How does your Contactless Magnetic Technology differ from other magnetic technologies?
While other technologies offer non-intrusive, non-disruptive magnetic inspection, our CMIT technology goes further by identifying, characterizing, and prioritizing pipeline defects with high-resolution data accuracy. Defect locations can be accessed in real time on the data logger during field inspection, and reports can be delivered within 5-10 business days, depending on project urgency and requirements.
Pipeline Integrity & Engineering Assessment
What is the difference between the results we get with CMIT, External Corrosion Direct Assessment (ECDA), Stress Corrosion Cracking Direct Assessment (SCCDA) and Internal Corrosion Direct Assessment (ICDA)?
- ECDA confirms the effectiveness of cathodic protection and coating condition (DCVG, ACVG, ACCA), allowing inference of locations susceptible to external corrosion. CMIT verifies metal loss at CP-deficient or coating-anomaly sites. Combined, ECDA + CMIT enhances program confidence and accuracy.
- SCCDA identifies susceptibility to stress corrosion cracking, while CMIT detects the presence of cracks. Using both together improves confidence and accuracy in assessing SCC risk.
- ICDA employs the proven Internal Corrosion Predictive Model (ICPM) to predict water, solids, and concurrent internal corrosion rates. When combined with CMIT, predicted defect locations are verified, further increasing program accuracy and confidence.
Together, these methods provide a comprehensive, multi-angle view of pipeline
condition.
How do you integrate External Corrosion Direct Assessment (ECDA) and Internal Corrosion Direct Assessment (ICDA) with CMIT results?
Because CMIT detects both external and internal defects, it can be combined with ECDA and ICDA to enhance program accuracy and confidence. We correlate CMIT-identified anomalies with ECDA and ICDA predictive zones, providing cross-validation that increases confidence in assessment results and helps prioritize maintenance based on severity and risk.
Advanced Capabilities & Credibility
What qualifications / certifications do Canchuks Corrosion engineers hold?
Our team includes professional engineers, NACE-certified corrosion engineers, pipeline integrity specialists, and materials scientists with deep field and regulatory experience.
Why do clients choose Canchuks Corrosion for materials and integrity challenges?
We combine proven diligence, field-ready innovation like CMIT, engineering expertise, and regulatory fluency. Our clients value our responsiveness, transparent reporting, and specialized knowledge of unpiggable and legacy pipeline infrastructure
Do you offer remote consulting or support for international pipeline projects?
We support international clients through remote consultations, virtual assessments, strategic planning, and field operations deployment. Our tools and protocols are adaptable for use in field operations worldwide.
How fast can Canchuks deliver a technical assessment or inspection report?
Depending on project scope, rapid-turnaround options range from 2 days for preliminary findings to 10 days for full reports. We prioritize critical assets and compliance deadlines
How can I request a quote or consultation for an unpiggable pipeline evaluation?
Contact us via our website at canchukscorrosion.com, email us at info@canchukscorrosion.com, or call us directly to discuss your project
Copyright © 2025 Canchuks Corrosion Inc. Corrosion Experts