TechCorr

TechCorr ‘s asset integrity and maintainance offers Persons in Charge (PIC) responsible for entire projects and/or act as the client representative’s eyes and ears overseeing construction contractor performance.

Our PIC is able to carry out the following:

• Monitors and Coordinates Field Construction Activities
• Receives Project-Specific Direction from Construction Lead
• Schedules Field Work with Contractors
• Coordinates Work Between Contractors
• Reviews and Verifies Compliance with Job Specific DOT Operator Qualification (OQ) Requirements (OQ Certified in Abnormal Operations, Pipeline Maintenance, and Corrosion Maintenance)
• Monitors and Maintains Compliance with Work-Hour Limits and Time-Off Requirements
• Prepares and Secures Approval for BP & Other Facility Permits – Authorization to Work (ATW), Hot Work, Cold Work, Confined Space Entry, Excavation, etc.
• Responsible for Site Safety Orientation and Control
• Performs Routine Safety Inspections such as Trenching and Shoring, Welding, Confined Space, Working from Heights, etc.
• Coordinates and Participates in Inspections performed by Third-Party Safety Inspection Specialist such as Critical Lifts, Scaffoldings, Excavations =/> 20 feet, High Voltage Electrical =/> 4800 volts and Diving.
• Performs Safety Observation Conversations (SOC) and Participates in Extended Audits
• First Responder for Safety and Environmental Incidents
• Understands and follows BP Response and Notification Procedures
• Maintains Construction Documentation – Safety, Environmental, Regulatory Compliance, QA/QC, Progress Reports, etc.
• Reviews and Completes Pre- and Post-Construction Checklists
• Prepares and Distributes Daily Construction Reports (Progress, Crew Size and Classification, Equipment List, Safety and Environmental Performance, Plans for the Following Day)
• Verifies and Documents Adherence to Material Specifications – Purchase Orders, Material Test Reports (MTR’s), Material Transfers, etc.
• Verifies and Documents Adherence to Construction Standards and Specifications (Welding, Material Handling, Coating, Ditch Safety, Critical Lifts, etc.)
• Verifies and Documents Compliance with Outside Permit Conditions
• Verifies and Documents Adherence to BP and Industry Standards and Codes
• Verifies and Documents Contractor’s OQ Certification for Specific Tasks
• Gathers Information and Completes Repair & Inspection (R&I) Reports
• Completes Construction Section of APL 250
• Finalizes Post-Construction Documentation and Transmits to Construction Lead for Review
• Provides On-Site Communication with Regulatory Agencies & Municipalities
• Works With Land Owners to Resolve On-Site Issues (Within Regulatory, Environmental, and ROW Stipulations)

TechCorr provides visual testing (VT) services for multiple industries and assets.  Typically, these services are performed while the asset remains in-service, during maintenance outages or while under construction.  Our certified inspectors not only identify discrepancies for code and regulatory compliance but also offer quality control services during fabrication and/or construction of equipment and facilities.

TechCorr follows the certification requirements from the American Petroleum Institute (API) and offers the following technical personnel:

• API 653 Above Ground Storage Tank Inspectors
• API 510 Pressure Vessel Equipment Inspectors
• API 570 Piping Equipment Inspectors
• API 936 Refractory Material Inspectors
• API 579 Fitness for Service Engineer Assessments
• API 580/1 Risk Based Assessment Approaches

Additionally, TechCorr provides:

• NACE I & II Coating Inspectors
• NACE I & II CP Technicians
• CWI – Certified Welding Inspectors

TechCorr utilizes the Visual AIM smart tablet inspection platform to perform efficient and effective visual inspection reports, in a tenth the time of manual reports.

Above Ground Storage Tanks are critical assets for nearly every process plant.  TechCorr is the world’s most technically advanced tank inspection company capable of performing on-line assessments and out-of-service inspections.

3D Laser Scanning

TechCorr uses 3D reality capture solutions combined with high-performance laser scanning technology to enable highly accurate survey grade mapping of environments.  Using the sub-millimeter profiling technique calculations can be completed in moments versus weeks when surveys are completed manually. 

Above Ground Storage Tank Surveys include: 

• Roof & Floor Deviation Surveys
• High Definition Alignment, Verticality & Plumbness
• Peaking and Banding
• Floor Analysis
• Shell and Edge Settlement
• Column Analysis
• Girder & Rafter Analysis
• Floating Roof Gap & Rim Space Analysis
• Tank Strapping Analysis for Volume Certification
• Tank Berm Surveys for Spill Containment Calculations

Acoustic Emissions Testing

Above Ground Storage Tank Acoustic Emission testing (AET) is a powerful screening technique that provides real-time, 100% volumetric monitoring of in-service storage tanks.  Using advanced low and high-frequency receivers, acoustic signals produced within the material under stress, are captured and modeled. Using proprietary auto-analysis and artificial intelligence software analysis of the signals is completed identifying the type, location, severity of structural defects present in the equipment.  Damage mechanisms identifiable including but not limited to:

• Bottom Side and Top Side Corrosion
• Weld cracking, embrittlement, Stresses

Acoustic Emission of Storage Tanks is quick and has a limited impact on the operations of a tank.  While the methodology does not meet the requirements of API 653; AE of storage tanks is a great tool to help prioritize maintenance.  And, when used in combination with our In-Service Robotic Tank floor inspection service; deferral of out-of-service tank inspection can be obtained.

Guided Wave Ultrasonic Testing

Guided wave ultrasonic testing (GWUT), also known as long-range ultrasonic testing (LRUT), is a screening tool for rapidly testing long lengths of pipe from a single inspection point. GWUT provides 100% coverage of the pipe wall without having to remove insulation or coating. It quickly identifies areas of corrosion or erosion that may then undergo more detailed inspections using other NDT techniques, such as radiography or 3D structured light.

Magnetic Flux Leakage

API 653 requires tank floors to be inspected while the tank is out-of-service.  TechCorr provides qualified-certified-experienced inspectors with technicians to perform magnetic flux extrusion on the tank floor.  Theoretically, magnets or electromagnetic energy is impregnated into the tank floor through the tank floor scanner.  Pick up coils installed on the scanner measure distortions within the magnetic field.  These distortions are the result of wall loss such as corrosion or erosion.  The technicians using the floor scanners are able to evaluate the magnetic field distortions screening for the presence of top and bottom side corrosion.  TechCorr’s procedure, once the tank floor is screened, requires indications to be proven and sized using other methodologies such as thickness gauging, corrosion mapping, metrology and similar.

• Most reliable inspection method available
• Repeatable results assuming similarly skilled technicians
• 100% coverage of the tank’s floor including HAZ areas around welds
• Able to scan the annular plate which is most susceptible to bottom side damage
• Exceeds API 653 Inspection Requirements
• Improves overall integrity management programs
• Used to create tank repair scopes of work, which can be audited
• Documentation of inspection performed is provided

Pulsed Eddy Current (PEC) Inspection

TechCorr offers Pulsed Eddy Current a unique corrosion survey method that allows ferromagnetic materials to be surveyed without the need to make contact with the surface (in contrast with Ultrasonics). This means that the measurements can be performed on objects covered with insulation, asbestos, fireproofing, concrete or coating.

For general ultrasonic technique, you need to remove the insulation at various places where you are expecting corrosion; skilled operator and specialized probes/ couplant will be required to get proper readings. PECT inspection is done online & without the removal of insulation. The high costs for removal of insulation can therefore be avoided.

ROV Submarine Video Inspection

TechCorr’s video inspection tools are ideal for a broad set of applications, including:

• examining the material condition inside pipes, tubes, vessels, and tanks
• assessing insulation integrity
• evaluating equipment reliability
• inspecting internal piping components, such as floats, baffles, valves, and internal coatings
• confirming the results of other non-destructive testing methods
• verifying drawings and schematics.

Shell Plate Corrosion Mapping

Corrosion mapping is an ultrasonic technique which maps and identifies variations in material thickness due to corrosion. Corrosion is the deterioration of metallic material by a chemical (or electrochemical) attack. This is normally caused by the environment (most often water), and sometimes by other materials. There are several types of corrosion:

• Uniform corrosion that extends evenly across the surface
• Pitting corrosion that is uneven and has smaller deep areas (pits)
• Exfoliation corrosion that moves along layers of elongated grains
• Inter-granular corrosion that grows along grain boundaries

To perform corrosion mapping an automatic or semi-automatic scanner is used to scan an inspection surface, using various ultrasonic techniques including pulse echo, eddy current and phased array. Corrosion mapping is widely used in the oil, gas and nuclear industries for the inspection of pipework, pressure vessels, storage tanks, and reactors. Results for corrosion mapping provide a high degree of repeatability and the advantage of position and size data for every flaw which can be compared for repeat scans of the same area to track flaw growth or corrosion rates both generally and for individual pits.

SRUT Annular Plate Inspection

TechCorr’s Short Range Wave Ultrasonic Testing (SRUT) is specifically designed to screen difficult-to-access locations of tanks, vessels, and piping, such as:

• areas underneath supports, clamps, and composite repairs
• the annular plate of above ground storage tanks.

Our testing equipment produces a high-resolution, real-time color image of internal/external corrosion up to four feet from the transducer.

Ultrasonic Tank Floor Robot

With a combination of highly skilled personnel and a robotic tank floor inspection system, TechCorr provides API 653-compliant inspections of above ground storage tanks without the risk, cost, or hassle of removing tanks from service.

Ultrasonic Tank Wall B-Scan Crawler

The ultrasonic test is based on the reflection phenomenon of acoustic waves when they meet obstacles to their spread. The wave is reflected back to its source if the obstacle is in a normal position in relation to the incident beam.

TechCorr’s Tank Wall Crawler is a rugged magnetic system- B-Scan Buggy which is the fastest method for inspecting remote access areas and a much safer alternative for tank wall and roof inspection. The B-scan Ultrasonic scanners provide a two-dimensional graphics presentation, in which the travel time of an ultrasonic pulse is plotted along the vertical axis and the linear position of the transducer is plotted along the horizontal axis. The resulting B-scan image provides detailed information on both the size and the depth of a detected material flaw.

Ultrasonic Weld Testing

Ultrasonic weld inspection is one of the most common methods of non-destructive testing (NDT) used to detect discontinuities within the internal structure of welds. The obvious advantage is its ability to help establish the weld’s internal integrity without destroying the welded component.

This method of testing makes use of mechanical vibrations similar to sound waves but of higher frequency. A beam of ultrasonic energy is directed into the object to be tested. When the pulse of ultrasonic waves strikes a discontinuity in the test piece, it is reflected back to its point of origin. Thus the energy returns to the transducer. The transducer now serves as a receiver for the reflected energy. The initial signal or main bang, the returned echoes from the discontinuities, and the echo of the rear surface of the test piece are all displayed by a trace on the screen of a cathode-ray oscilloscope.

Detection, location, and evaluation of weld discontinuities become possible because the velocity of sound through a given material is nearly constant, making distance measurement possible, and the relative amplitude of a reflected pulse is more or less proportional to the size of the reflector. One of the most useful characteristics of ultrasonic testing is its ability to determine the exact position of a discontinuity in a weld. This testing method can be used on ferrous and nonferrous materials, is often suited for testing thicker sections accessible from one side only, and can often detect finer lines or plainer defects which may not be as readily detected by radiographic testing.

TechCorr’s Marine Inspection team offers an American Bereau of Shipping (ABS) certified program that works to understand the condition of maritime assets to provide critical lifecycle information. Our unique ability to work with office and field-based engineers and inspectors allows us to create custom assessments for marine industry clients. Whether for a newbuild or existing vessel, TechCorr’s experts provide valuable condition details and an objective view to help you optimize asset integrity and maintain compliance.

Furthermore in 2020, TechCorr will continue seeking accreditations through Lloyds Register and the DNV. This will allow expansion of our resources and services to additional ships and ship owners who are governed by regulatory bodies outside of ABS.

Internal Drone Inspection

TechCorr’s UAV Inspection Program offers drone assisted inspections to help provide key analysis in otherwise obstructed or confined spaces on ships, tankers and other marine vessels.

Regular Body Accreditations

TechCorr is an independent third-party ABS certified inspection provider currently servicing the greater San Francisco Bay Area. Currently accredited via ABS to perform Radiography, Magnetic Particle, Ultrasonics, Liquid Penetrant and Visual Inspections. With local personnel, TechCorr can facilitate numerous types of hull survey inspections including but not limited to; Special Periodical Surveys, Intermediate Surveys, Load Line Surveys, Dry-docking Surveys.

TechCorr has the capabilities in performing additional services outside of governing body required hull surveys, such as: 

• Ship owner required Thickness Measurements
• Piping Inspections
• Pitting Corrosion Assessments and mapping

TechCorr ‘s pipeline integrity group offers “Persons in Charge” responsible for entire projects and/or act as the client representative’s “Eyes and Ears” overseeing construction contractor performance.  Additionally, the pipeline integrity group provides experts in the nondestructive examination of pipelines during anomaly digs and/or the validation of anomalies for the purpose of qualifying in-line inspection data; using both conventional and advanced technology.

Persons in Charge (PICs) have project management and communication expertise able to act as the eyes and ears for the client; to report production and quality check contractor performance.  Typical PIC’s are qualified visual inspectors with certification in coatings inspection and/or installation of steel/composite pipe repair solutions.

TechCorr ‘s pipeline integrity professionals are qualified in obtaining soil samples, measuring pipe to soil potentials, soil resistivity and similar activities.  Additionally, our Pipeline Integrity professionals are supported by a group of engineers capable of evaluating MAOP and Burst Pressures using RSTRENG and/or KAPPA calculation methodologies.

Guided Wave Ultrasonic Testing

Guided wave ultrasonic testing (GWUT), also known as long-range ultrasonic testing (LRUT), is a screening tool for rapidly testing long lengths of pipe from a single inspection point. GWUT provides 100% coverage of the pipe wall without having to remove insulation or coating. It quickly identifies areas of corrosion or erosion that may then undergo more detailed inspections using other NDT techniques, such as radiography or 3D structured light.

Magnetic Particle Inspection

Magnetic Particle Inspection (MPI) is a non-destructive testing (NDT) process for detecting surface and shallow subsurface discontinuities in ferromagnetic materials such as iron, nickel, cobalt, and some of their alloys. The process puts a magnetic field into the part. The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when the electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs when no electric current is passed through the test object, but a magnetic field is applied from an outside source. The magnetic lines of force are perpendicular to the direction of the electric current, which may be either alternating current (AC) or some form of direct current (DC) (rectified AC).

Typically, during the construction of larger diameter pipelines; the use of x-ray crawlers, real-time radiography, and automated ultrasonic girth weld techniques, can be used to exponentially increase production, improve quality and create huge savings.  TechCorr’s pipeline division was formed specifically to focus on the construction of large diameter long-distance pipelines, offering a range of solutions operated by experienced pipeline professionals.

Mainline Pipeline Construction X-Ray Crawlers

POWERHOUSE

A single x-ray crawler can shoot upwards of 200 welds per shift – typically four to eight times the production of a gamma-ray crew, depending on diameter and wall thickness. X-Rays produce high-quality images versus grainy images produced by gamma rays enabling improved film interpretation.

COST EFFICIENCY

At a fraction more than a conventional gamma crew yet 4-8x the production – reduce project costs.

REDUCED OPERATOR DOWNTIME

The modular design also allows the operator to exchange components quickly – reducing operator downtime versus competing systems

AUT Girth Weld Inspection

TechCorr’s Inspection utilizes the PipeWIZARD® Phased Array (PA) system—combined with a global team of certified operators—to provide our customers with today’s most comprehensive Automated Ultrasonic Testing (AUT) girth weld inspection services. This world-class system enables advanced inspection techniques and real-time reporting, so the same equipment can be used for high-production and specialized weld inspections. Elevated production rates are possible with no sacrifice in quality.

PipeWIZARD is ASTM E-1961, API 1104, and DNV-OS-F101 capable. All TechCorr Inspection PipeWIZARD operators are UT-certified Level II or higher and can be rapidly deployed to both onshore and offshore locations.

Heat Transfer equipment such as heat exchangers, air fin coolers, boilers, and condensers require NDE examinations.  TechCorr offers highly trained personnel certified in accordance with the American Society of Nondestructive Testing requirements.  TechCorr goes further in the certification requirements for a competent analyst by requiring individuals to pass extensive mockup test bundles that are established in the industry for qualifying personnel prior to performing work at specific plants.

Eddy Current Testing (ECT)

Eddy Current (EC) testing is very sensitive to a great number of variables such as cracks, corrosion, fretting, erosion, material thickness, coating thickness, material changes; making it a powerful examination tool.  Eddy Current can be as accurate as +/- 5% sensitivity (or more if using array probes) but limited to nonferromagnetic and slightly magnetic alloys.  The Eddy Current Technique is based on the induction of an electromagnetic field in the component being examined which when measured for distortion can detect various forms of internal and external tube damage.

Remote Field Testing (RFT)

Remote Field (RF) testing is an electromagnetic examination which utilizes the through transmission effect to produce a resultant field that is affected by anomalies and is measured a few tube diameters away from the AC excitation source, without any tube magnetization or saturation.  RFT is used primarily for the inspection of ferromagnetic tubing.  This inspection consists of a full-length examination performed from the inside diameter with equal inner and outer surface discontinuity detection and sizing.  The objective of this technique is to detect ID and OD degradation such as corrosion, erosion, pitting, fretting and gradual wall loss generally found in ferromagnetic tubing.

Near Field Testing (NFT)

Near Field (NF) examination is similar to the externally referenced method however uses a near field transmitter and receiver coil inducing eddy currents axially, radially and circumferentially, in the tube wall.  NFT operates in the same frequency as remote field technology as such is only suited for ferromagnetic materials.  NFT is highly sensitive to defects close to structures such as supports, tube sheets and similar.

Internal Rotating Inspection System (IRIS)

Internal Rotary Inspection service (IRIS) is an ultrasonic method sensitive to both ID and OD forms of volumetric wall loss.  Measurements as accurate as +/- .005 Inches can be obtained.  However, IRIS accuracy and sensitivity are compromised when in used with the presence of ID or OD deposits, bends, geometry changes.  Tube cleanliness is critical for this method.  IRIS is not sensitive to non-volumetric forms of degradation such as cracking.

TechCorr operates ~150 mobile NDE laboratories with experienced technicians qualified in accordance with ASNT (American Society of Non-Destructive Testing).  A typical mobile laboratory is equipped with personnel and equipment able to execute nearly all conventional NDE techniques including but not limited to Radiography (RT), Magnetic Particle Testing (MT), Dye Penetrant Testing (PT), Ultrasonic Thickness Testing (UTT) and Positive Material Identification (PMI).  

Contact TechCorr for your construction, fabrication or exploratory inspection project.

Gamma Radiography

TechCorr’s gamma radiographic method uses radioactive isotopes to detect internal defects and inhomogeneities in weld quality and structural integrity or corrosion of asset material. We identify and report the small changes in thickness and density of the material  that have a significant effect on the strength of penetrating radiation, according to the inhomogeneity of the radiographic image displayed as brighter or darker areas on the film.

 Shear Wave Testing

Shear wave testing, also known as angle beam inspection, is an ultrasonic testing technique used primarily for weld inspections.

Awkward weld geometry and the presence of a weld crown or bead typically require shear wave testing, which entails placing a probe to the side of a weld and generating beams at an angle toward the weld.

Magnetic Particle Inspection

Magnetic Particle Inspection (MPI) is a non-destructive testing (NDT) process for detecting surface and shallow subsurface discontinuities in ferromagnetic materials such as iron, nickel, cobalt, and some of their alloys. The process puts a magnetic field into the part. The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when the electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs when no electric current is passed through the test object, but a magnetic field is applied from an outside source. The magnetic lines of force are perpendicular to the direction of the electric current, which may be either alternating current (AC) or some form of direct current (DC) (rectified AC).

Dye Penetrant Inspection

TechCorr’s Penetrant Testing (PT) inspection services find surface-breaking discontinuities on relatively smooth, nonporous surfaces.

Penetrant Testing (PT) – also known as dye penetrant testing – is based on the properties of surface wetting and capillary action, which causes a liquid to rise when confined to a small opening. After applying the penetrant and wiping away the excess, the penetrant that rises to the surface can indicate surface-breaking anomalies.

TechCorr’s PT services are widely applicable to identify discontinuities in a variety of assets given its ease of use and minimal equipment requirements. Our technicians perform PT on assets in a variety of industries, with a wide range of shapes, sizes, and materials, including:

• Metals
• Composites
• Glass
• Ceramics
• Rubber
• Plastics

Ultrasonic Thickness Testing

Ultrasonic Thickness Testing (UTT) is a performing non-destructive method analysis of the local thickness of solid material and is based on the time taken by the ultrasound wave to return to the surface. UTM is frequently used to monitor metal thickness or weld quality in industrial settings such as mining. TechCorr’s technicians are equipped with portable UTM probes to reach steel plating insides, tanks, decks, and the superstructure. They can read its thickness by simply touching the steel with the measurement head (transducer). Accuracy is generally assured by first removing visible corrosion scale.

The advantages of this method are:

• Does not require access to both sides of the sample
• Can be engineered to cope with coatings, linings, etc.
• Good accuracy (0.1 mm and less) can be achieved using standard timing techniques
• Can be easily deployed, does not require laboratory conditions
• EMAT does not require the use of couplant.
• EMAT can conduct thickness measurements through corrosion and other surface coatings on metals
• No need to remove the coating of the metal.

Hardness Testing

Our Hardness test provides an evaluation of a material’s resistance to deformation. When doing a hardness test, the hardness tester applies a fixed load and the depth of penetration is measured.

Positive Material Identification

Positive material identification (PMI) provides alloy chemistry and grade ID information in seconds using a hand-held scanner.

PMI is also commonly used to ensure:

• the parent material in vessels and pipes is composed of the correct composition

Alternating Current Field Measurement

Alternating Current Field Measurement (ACFM) is an electromagnetic technique that identifies and sizes surface breaking cracks in welds and metallic components without the need to make contact with the material’s surface.

 Automated Corrosion Mapping

Automated corrosion mapping employs multiple ultrasonic techniques to:

• perform a 100% surface scan of equipment
• produce a detailed map of the corrosion experienced by equipment
• size the length, width, depth, and orientation of defects.

The software used by TechCorr for automated corrosion mapping, RSTRENG®, provides fitness-for-service (FFS) assessments. The U.S. Department of Transportation accepts this as an evaluation technology.

Creaform Laser Testing

This 3D scanner has been optimized to meet the needs of integrity engineers looking for the most effective and reliable way to acquire 3D measurements of physical objects.

The metrology-grade portable 3D scanner is part of the perfect NDT solution as it is fast, accurate, portable and easy-to-use. Whether for pipe inspection or aerospace MRO services, this NDT method makes it possible to obtain all the information necessary to maintain integrity.

Electromagnetic Acoustic Testing (EMAT)

TechCorr offers one of the largest AE tank testing systems available in the market able to examine some of the largest tanks within the industry. The use of acoustic emissions in combination with other technologies becomes a useful approach to tank compliance and integrity management.

 Full Matrix Capture (FMC) & Total Focus Method (TFM)

TechCorr offers Full Matrix Capture (FMC): a specific data-acquisition process using ultrasonic array probes where each element in an array is successively used as the transmitter, while all elements are used as receivers for each transmitted pulse. The Total Focusing Method (TFM) is an ultrasonic array post-processing technique which is used to synthetically focus at every point of a region of interest. Both are advanced imaging techniques for ultrasonic testing which provide improved quality and resolution over conventional phased array produced imaging.

MAIN ADVANTAGES:

• Optimal focusing and spatial resolution everywhere
• Direct imaging of a large area for one probe position
• All reachable angles with the array simultaneously
• Defect characterization
• Comprehensive imaging of defect
• 3D imaging

Guided Wave Ultrasonic Testing

Guided wave ultrasonic testing (GWUT), also known as long-range ultrasonic testing (LRUT), is a screening tool for rapidly testing long lengths of pipe from a single inspection point. GWUT provides 100% coverage of the pipe wall without having to remove insulation or coating. It quickly identifies areas of corrosion or erosion that may then undergo more detailed inspections using other NDT techniques, such as radiography or 3D structured light.

Phased Array Ultrasonic Testing

Phased array ultrasonic testing produces real-time sectorial scans (S-Scans) that provide a full volumetric examination from a single inspection point. Phased array equipment can detect defects regardless of their orientation to the transducer. Phased array ultrasonic testing can be used for:

• inspection of welds
• thickness measurements
• corrosion inspection
• crack detection

Surface Eddy Current for SCC (Stress Corrosion Cracking)

TechCorr uses NDT methods that use the principal of “electromagnetism” as the basis for conducting examinations.

One of the major advantages of eddy current as an NDT tool is the variety of inspections and measurements that can be performed. In the proper circumstances, eddy currents can be used for:

• Crack detection
• Material thickness measurements
• Coating thickness measurements
• Conductivity measurements
• Material identification
• Heat damage detection
• Case depth determination
• Heat treatment monitoring

Advantages of eddy current inspection include:

• Coating removal not required
• Sensitive to small cracks and other defects
• Detects surface and near-surface defects
• The inspection gives immediate results
• Equipment is very portable
• The method can be used for much more than flaw detection
• Minimum part preparation is required
• Test probe does not need to contact the part
• Inspects complex shapes and sizes of conductive materials

 Time of Flight Diffraction

Time of flight diffraction (TOFD) is an ultrasonic screening tool that can rapidly scan welds and produce very accurate measurements of any defects found.

TOFD operates using a pitch and catch technique with two probes on either side of a weld. One probe transmits a series of ultrasonic pulses and another receives them. If a crack or other defect is present in the weld, the ultrasonic waves will diffract and the time of flight between transmitter and receiver will be affected. Based on the change in time of flight, weld defects can be located and sized.

TechCorr ‘s Federal Aviation Administration (FAA) Licensed Commercial Drone operations utilize various types of Unmanned Operated Technology to visually examine the condition of accessible equipment.  We own and operate a fleet of visual, thermal and confined space solutions.

Applications include but not limited to:

• Above Ground Storage Tank & Reactor Internal Structures
• External Visual Inspections of Above Ground Storage Tanks & Reactors
• API 570 Visual Inspection of Overhead (Inaccessible) Piping
• Chimney and Flare Stack Inspections using Visual & Thermography
• Underside Platform Inspections
• Ventilation Systems
• Bridge Structural Inspections
• Disaster Area Surveys

Internal Drone Inspection

Techcorr is an approved and licensed supplier of remote visual inspection technologies utilizing unmanned aerial systems otherwise known as drones.  Techcorr can perform internal visual inspections on difficult to access equipment such as vessels, towers, large bore piping, boilers, storage tanks, spheres, stacks, flares, and similar equipment.  Utilizing these services is a cost-effective way to save time and money.

Drones can be deployed from outside the equipment and flown internally eliminating the need to place personnel inside the confined space.  Utilizing a drone to perform a visual inspection will reduce the amount of time the equipment is out-of-service by minimizing or eliminating the amount of scaffolding, lighting, personnel and other such equipment that would typically be needed to perform an internal inspection.  This method is by far the safest and fastest way to get you back on-line and up and running.

External Drone Inspection

Techcorr is Federally licensed and an approved supplier of remote visual inspection technologies.  Our pilots and crew are FAA Part 107 Licensed and have over 30 years’ experience from gasoline-powered helicopters to the more frequently used multi-rotor platforms of today.  Our pilots and crew are not only FAA certified to fly we also hold certificate’s in API 510/570/653.  We use state of the art cameras to capture high-resolution photos along with the use of thermal technology we are sure to have a custom solution for you.  Call for a custom quote and let us get started on creating the right inspection plan that fits your needs.