ANDT Oil and Gas Brochure - MISTRAS Group, Inc.

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3 Guided Wave Collar • Eliminate vessels from turnarounds using risk based inspection (RBI) methodology and global inspection. • Identify and size defects caused by unique damage mechanisms like High Temperature Hydrogen Attack, Stress Corrosion Cracking, and more. • Perform “On-Line” Monitoring of suspect assets to ensure continued safe operation. VESSELS TOFD Vessel service leads to the following issues: • Internal and External Erosion/Corrosion • Cracking • Weld and weld heat affected zone issues • Metallurgical damage Advanced techniques used to determine the above damage mechanisms are: AE MONPAC PLUS INSPECTION MonPAC Plus is a technology package developed by MISTRAS that allows owners to inspect a pressure vessel to determine the relative condition of the asset while the asset is still in service. Potential anomalies are detected and located for use in follow up inspections. The use of MonPAC Plus greatly reduces the need to further perform costly out of service inspections of vessels that show no signs of degradation. ROPE ACCESS Certified rope access technicians work in difficult or inaccessible areas efficiently without the need for scaffolding, cranes, or mobile work platforms. Using rope access for inspection and maintenance activities generates significant cost-savings for asset owners, especially where traditional access methods comprise a major portion of the overall project budget. AUTOMATED ULTRASONIC LSI See Page 5, Piping, for more information. www.mistrasgroup.com | +1.609.716.4150 | sales@mistrasgroup.com PULSED EDDY CURRENT (PEC) PEC technology is an inspection technique for measuring the thickness of steel objects without direct contact to the steel surface. The electromagnetic test uses a pancake probe to identify general corrosion through insulation or concrete surfaces by introducing an electric current into the transmitter coil, magnetizing the steel and measuring wall thickness. PEC is ideal for surveying large sections of piping or pressure vessels to detect areas that have been affected by moisture trapped under insulation causing corrosion of the asset being inspected. Use PEC when other NDT techniques may be limited due to the larger diameters encountered when inspecting insulated vessels. PHASED ARRAY See Page 5-6, Piping, for more information. ULTRASONIC P-SCAN Different forms of cracking such as fatigue, creep, HIC, SOHIC and various forms of embrittlement, may occur depending on the process in which the equipment is operating. These begin as microscopic damage and can occur along the grain boundaries of the parent material or the weld heat affected zones. The P-Scan is used to accurately detect and size these mechanisms in its early stages of damage formation, while creating three dimensional views of the weld that enables the operator to better visualize its position. TIME OF FLIGHT DIFFRACTION (TOFD) TOFD is utilized as a quick survey tool of welds and weld heat affected zones in pressure vessels looking for the presence of welding fabrication defects or screening for cracking. It is an excellent tool for providing accurate through-wall depths of existing cracks.
HEAT EXCHANGERS & CONDENSERS A variety of tube inspection techniques are used for bundle inspections. The choice of technique depends on the tube material type. MISTRAS technicians are cross trained on IRIS, Remote Field Eddy Current, Near Field Eddy Current and standard Eddy Current techniques and use the same operating system to achieve these results. This “Cross Training” allows us to minimize the amount of technicians we need to deploy to your project, ultimately saving inspection dollars. Heat Exchangers and Condensers are subject to various issues related to the tube bundles such as: • Internal and External Pitting and Corrosion and Erosion • Cracking (SCC, Fatigue, Thermal, Vibration) • Mechanical damage (Inlet Erosion, Baffle Fretting, Freeze Bulges, Tool Gouges) A variety of advanced techniques are used for bundle inspections, such as: REMOTE FIELD TESTING (RFT) Carbon steel tube bundles are inspected using RFT. The RFT technique utilizes the same platform as our standard ET inspections which does not require tubes to be as clean as other techniques. Our professional inspectors are cross trained to provide both ET and RFT while on site. www.mistrasgroup.com | +1.609.716.4150 | sales@mistrasgroup.com NFT Sample Damage 3D Reporting NEAR FIELD TESTING (NFT) NFT is used for inspecting fin fan (air coolers) designed tube bundles. Also available in our standard ET equipment platform, NFT is a very reliable technique to determine ID anomalies - such as inlet erosion, corrosion, and pitting - that normally occur during service in this previously difficult to inspect tube design. INTERNAL ROTARY INSPECTION SYSTEM (IRIS) IRIS uses ultrasonic technology with a rotating transducer to deliver quantifiable data on the ID or OD damage to tubes. Primarily used as a prove up tool, IRIS requires tubes to be cleaner than other tube inspection techniques and scan speeds to be slightly slower. Also available in our ET equipment platform, all IRIS tube data is presented in a C-Scan and B-Scan profile & archived for playback. EDDY CURRENT (ET) ET is the predominant inspection technique for the alloy tubes. ET does not require the tubes to be as clean as some other techniques and is relatively fast compared to more quantitative techniques like IRIS. MISTRAS’ tube inspection specialists utilize the latest ET technology along with an electronic reporting format that allows for quick analysis and generation of tube sheet drawings and results in an easy to read template. 3-D REPORTING MISTRAS tube inspection reports are revolutionary in their ability to provide defect data down the length of the tube. The tube data allows owners the increased ability to determine the root cause of tube degradation and potentially allows them to avoid the problem in the future through operating procedural changes or change in tube material choice during bundle repair. All tube inspection data is left on site in order to speed the process of getting the exchanger into production as quickly as possible. Tube inspection specialists review all on-site data & provide the final report to the client within 72 hours of the completion of the project. 4
Page 1 and 2: G r o u p, I n c. Advanced NDT Solu
Page 3: TANKS 2 TankPAC Specific tank relat
Page 7 and 8: Phased Array P-Scan & Computed RT V
Page 9 and 10: Vibration Analysis Combining IR and
Page 11 and 12: Finite Element Analysis Risk Based

ANDT Oil and Gas Brochure - MISTRAS Group, Inc.

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