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Advanced NDT Methods
Ultrasonic Thickness Measurement
Automated Corrosion Mapping, This technique scans one hundred percent of the required surface by applying ultrasonic pulse waves to detect and record area of corrosion and mechanical damage. This method can be utilized for base line inspections as well as in service examination of slug catchers, tanks, towers, vessels and many other numerous applications.
Phased Array (PAUT)
Phased Array ultrasonic testing (PAUT) can be utilized as a stand-alone or complimentary testing method. Phased array ultrasonic method can reveal volumetric discontinuities in the material that cannot be easily resolved with conventional ultrasonic testing. This method is highly recommended for critical discontinuities detection, sizing and monitoring in the oil and gas industry.
Time of Flight (TOFD)
Time of Flight Diffraction (TOFD) uses the time of flight of an ultrasonic pulse to determine the position and size of a discontinuity. The Time of Flight Diffraction (TOFD) ultrasonic test method is very sensitive and is very accurate. This method is highly recommended for critical discontinuities detection, sizing and monitoring in the oil and gas industry.
Long Range Guided Wave Testing
Long Range Ultrasonic wave testing is designed to inspect 100% of a pipe segment from a single location (without the need for costly scaffold building along the entire pipe length). Long range guided wave testing is used for both Internal and External corrosion/erosion in pipes which may be under insulation, coated or buried another advantage of this system is corrosion under pipe supports can be inspected without lifting the pipes. This system can be utilized either as an in-service tool or as an initial baseline survey to assist in future integrity trending.
Internal rotary inspection system (IRIS)
Internal rotary inspection system (IRIS) is employed for testing of pipes and tubes in boilers, heat exchangers and fin-fan tubes. It utilizes a high frequency ultrasonic probes which are inserted into a flooded tube. The probe is slowly extracted from the tube to produce accurate results which are displayed and recorded.
Eddy Current Inspection
Eddy current Inspection is performed through a process called electromagnetic induction. This inspection consists of a full-length examination performed on the inside of a tube. This application detects I.D. and O.D. degradation such as cracking, corrosion, erosion, pitting, fretting and gradual wall loss generally found in non-ferromagnetic tubing.
Remote Field Technique
Remote Field Inspection is an electromagnetic examination primarily used to inspect tubing since conventional eddy current techniques have difficulty inspecting the full thickness of the tube wall due to the strong skin effect in ferromagnetic materials.
Alternating Current Field Measurement (ACFM) Inspection
Alternating Current Field Measurement (ACFM) is an electromagnetic technique for detection and sizing of surface breaking discontinuities. It can be used on conductive materials without the removal of paint coatings and can be utilized on very high temperature components (400 degree Celsius).
Close Proximity Radiographic Testing
Close Proximity Radiography is conventional Gamma radiography with the advantage that with a specialist source container and additional shielding on the delivery system the demarcated exclusion is considerably reduced. This would benefit a site that has safety sensors that are sensitive to the presence of ionising radiation and the need for smaller demarcated areas required during Turnarounds and Shutdowns.
Computerized Digital Radiography
Digital Radiography removes the requirement for traditional film and its processing operations. The digital radiographic images are captured using special phosphor screens containing micro-electronic sensors. Captured images are digitally enhanced for increased detail and are easily archived as digital files where the digital image is viewed and enhanced using software on a computer. Digital radiographic images have found wide acceptance in most code/specifications requirements (ASME).
Direct Radiography
Direct Radiography removes the requirement for traditional film and its processing operations. Direct Radiography’s electronic imaging process uses a special flat panel detector in which captured images are digitally enhanced for increased detail and displayed directly onto a laptop for immediate evaluation. The digitized images are easily archived as digital files where the digital image can be saved and viewed at a later date. Digital radiographic images have found wide acceptance in most code/specifications requirements (ASME).
Positive Material Identification
Positive Material identification is an inspection method in which verification of material properties of in-service equipment which may be susceptible to dissimilar material type degradation or inappropriate materials installed in process or upon construction which can cause costly complications which can be avoided utilizing this quick and efficient inspection technique. This Inspection technique can also be used to trouble-shoot proactively for potential process and equipment problems before failures occur.
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