Once the line has been placed under CP, potential surveys, with readings usually at wide spacing using permanent test leads, are needed to ensure complete and continued protection. If trouble occurs and some sections of the line are found to be less than fully protected, then close potential measurements can be useful in tracking down the difficulty.
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ENGLISH
Corrosion Survey
CORPS is proud to have a team of NACE Certified Corrosion Specialists and engineers. We provide surveys and consultancy to help in finding causes using survey of the soil immediately above the pipeline.
AC/DC Interference Survey & Mitigations
Oil, gas and water pipelines, above ground storage tanks, power plants, energy facilities, deep wells, steel-in-concrete structures and other infrastructure assets may be subject to electrical interference caused by various third party sources. Interference can cause serious damage to structural assets. Careful AC and DC interference evaluation and mitigation can prevent accelerated corrosion and avoid safety hazards.
CORPS has the experienced personnel and equipment to provide:
- Careful analysis of AC/DC interference
- Analysis of the effect of interference on the structure
- Determination of the cause of the interference
- Recommendations for mitigation of the interference
Close Interval Potential Logging (CIPL)
CORPS provides services and data analysis for Close interval potential logging survey for pipeline integrity.
Direct Current Voltage Gradient (DCVG)
CORPS provides services and data analysis for Direct Current Voltage Gradient (DCVG) Survey for pipeline coating condition integrity.
Soil Resistivity
Surveys
CORPS provides services and data analysis for soil resistivity for corrosion assessment.
Offshore Pipelines Corrosion Surveys
CORPS provides services and data analysis for soil resistivity for corrosion assessment.
Internal Corrosion Direct Assessment (ICDA)
CORPS’s team of internal corrosion experts provide comprehensive solutions for internal pipeline integrity. These services cover initial corrosion assessment and testing, design and planning of mitigation programs and measurement of the efficacy of corrosion control efforts. Starting with Internal Corrosion Direct Assessment (ICDA) to identify maximum risk locations, the control of internal corrosion in pipelines is optimized by one or more of the following activities:
- Pipeline System Evaluation and Assessment
- ICDA process optimization
- Laboratory Analysis of Gas, Liquids and Solids
- Microbiologically Influenced Corrosion (MIC) Testing, Studies and evaluation
- Corrosion Monitoring
- Coupons
- Probes
- NDT (Non-Destructive Testing, In-line Inspection, Ultrasonic)
- Cleaning Pig Programs
- Recommendations
External Corrosion Direct Assessment (ECDA)
It is a structured process that improves safety by assessing and reducing the impact of external corrosion on pipeline integrity. ECDAs proactively prevent corrosion defects from growing to a size that would ultimately impact a pipeline’s structural integrity by: Identifying and addressing corrosion activity, repairing corrosion defects, remediating the causes of corrosion.
ECDA is a continuous improvement process. Through regular assessments, pipeline operators can identify and address locations where corrosion has occurred, is occurring or may occur. The external direct assessment of a pipeline involves four phases:
- Pre-assessment
- Indirect inspection
- Direct examination
- Post assessment