Automated Ultrasonics
Acoustic Emission
Digital Radiography
Eddy Current
Ground Penetrating Radar
TWISTED TUBE® Inspection Services
ANDT Solutions for Oil & Gas
Automated RT Crawler
Value Added Services Packages


CUI (Corrosion Under Insulation) Videos CUI Program Video
Click here to view our Corrosion Under Insulation (CUI) Program video
Our Value Added Services Packages are encompassed in our Asset Integrity Management (AIMS) methodology. The Asset Integrity Management approach combines traditional NDT with Advanced NDT, Engineering analysis and our robust PCMS™ software package, to yield cost effective solutions to current issues with regards to fixed and rotating equipment in the Oil and Gas industry. Most plants utilize traditional inspection techniques to inspect the assets that are covered in the plant's mechanical integrity program to prioritize their fixed assets based on time and interval based programs, with the data residing in an Inspection Data Management System (IDMS). In our case, the data is housed in our Plant Condition Monitoring Software (PCMS™).

Advanced techniques are utilized as stand alone technology, part of a technology solution to combine engineered pre-project planning with Risk Based Inspection (RBI) techniques (also available in PCMS™) or a combination of multiple advanced techniques with more definitive quantitative inspection techniques used to "prove up" our holistic approach(es).

Most of these technologies are implemented while the asset is still in service, thereby eliminating or greatly reducing the cleaning, environmental remediation and disposal costs required to inspect the asset while it is out of service. This also reduces the unanticipated discovery and associated inspection and repair cost when the assets are opened. In all cases, MISTRAS personnel can not only provide the inspection technology that is appropriate based on anticipated damage mechanism, but also house the data within PCMS™ and evaluate the data by performing code approved engineering calculations that yield accurate remaining useful life, and run, repair or replacement decisions.

An additional benefit of using MISTRAS is our ability to provide on-line health monitoring on high risk critical assets to allow plant operators to continue to operate an asset that exhibits high risk of potential failure until the plant can implement a cost effective alternative plan, such as the repair or replacement of the asset in question.
Case Study: External Corrosion of Above Ground Process Piping
External corrosion in above ground piping can occur due to a variety of issues including corrosion under insulation, Touch Point Corrosion (TPC) or Point of Contact corrosion. MISTRAS provides a holistic program to address these two concerns as well as addressing other concerns such as Retro Positive Material Identification to determine if the proper weld filler material was used during piping construction (a common failure in the Oil and Gas industry).

As illustrated in our Asset Integrity Management approach our external corrosion program follows a regimented, consistent method that prescribes the proper technologies to identify potential damage as well as provide operating decisions to the plant owners regarding the ability to run, repair or replace the asset. Our standardized corrosion program utilizes external visual inspections, performed by an API 570 inspector, to verify piping isometrics or correct any "field" deviations from the isometric drawings. In addition, the inspector identifies potential problem areas. Corrosion monitoring locations (CML's) are assigned based on API 570 criteria along with good engineering practice. Next, thickness measurements are obtained using a combination of ultrasonic thickness readings, ultrasonic corrosion surveys or traditional/ computed profile radiography. All measurements are then populated into our PCMS™ database.

In the case of Corrosion under Insulation, Touch Point Corrosion or other more sophisticated programs, the following steps are performed:
  • Identify piping systems of interest
  • Walk down piping systems while reviewing, verifying and editing all P&ID and Isometric drawings normally performed by an API 570 visual inspector
  • Enter drawings into PCMS™
  • Globally inspect the piping systems using Guided Ultrasonic Long Range inspection. Indicate where potential damage is occurring and if part of a PMI retrofit program, transcribe weld line details to updated P&ID's and ISO's. If GUL is being used for Touch Point Corrosion concerns, indicate those TPC's that exhibit potential damage and note on drawings.
  • Follow up qualitative or semi-qualitative inspections. For TPC concerns, utilize MISTRAS' proprietary Pocket UT™ system for touch point corrosion. Results are expressed in percentage wall loss within a range. For weld defects related to PMI concerns, utilize phased array and/or P-Scan ultrasonic technology. For various process induced anomalies (HIC, SOHIC etc.) utilize a combination of Time of Flight Diffraction and P-Scan.
  • Indicate amount of pipe wall loss, location of damage and extent of damage using LSI™/Pocket UT™ C-Scan mapping
  • Evaluate extent of damage using Fitness for Service calculations. FFS results will indicate future operational decisions such as repair, replace or run and monitor
  • On-line monitoring using Acoustic Emission, Vibration, Strain Gauging or other On-line techniques using MISTRAS' Sensor Highway II™ system tied into the plant’s control room or remotely monitored from MISTRAS corporate office
  • Upload all data into PCMS™
  • Reinspect using standard API calculations imbedded in PCMS™ software or utilize API 580 based RBI calculations for reinspection data also imbedded in PCMS™
Heroes Wanted: At MISTRAS, we protect critical assets. Sound familiar? Current openings include: Technicians, Engineers, Programmers, Inspectors. Make our mission your next. Read more...
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Engineering services are not being offered and will not be rendered where prohibited by law or where the company is not licensed to provide engineering services if a license is required.
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