A leading service provider by offering credible and on-time services.
NDTS India was established in 2006 with a motive to build a professionally managed enterprise dedicated to the challenging field of Non-Destructive Testing (NDT) & Evaluation. Today, we are an ISO 9001:2015 certified company offering 24/7 on-site Advance NDT Services by deploying world-class equipment’s with trained manpower as per various affiliations (ASNT, ISNT, ISO etc.).
At NDTS India, we constantly endeavor to fulfil our customer’s varied inspection needs and are deeply committed towards surpassing their expectations. We value and cherish their valuable suggestions and assistance. By virtue of our focus, core competence, a committed team of professionals and our unrelenting quest for excellence, we are fully geared to meet current and future challenges.
Service Offerings:
1a. Weld Inspection by Advance Ultrasonic (PAUT & TOFD)
2b. Tube Inspection by ECT, RFET, NFT, ECA, MFL, IRIS
3c. In-Service High Temperature (up to 600⁰C) Thickness Measurement by EMAT
4d. Boiler Water Wall Tube Inspection by EMAT
5e. Corrosion Mapping / Defect Detection of Field Pipelines (4”, 6” & 8”) by Intelligent Pigging
6f. Remote Visual Inspection (RVI) by specialized Cameras
7g. Wire Rope Testing by Magnetic Flux Leakage
8h. Corrosion Under Insulation by Pulsed Eddy Current (PEC)
619 & 620, The Great Eastern Galleria Plot No. 20, Sector 4, Navi Mumbai, Nerul, India
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<p>We offer ultrasonic pigging (by using In-line inspection tool EasyPig™ UT) and MFL Pigging (by using In-line inspection tool EasyPig TM) services for small diameter (4”, 6” & 8”) field pipelines with the help of M/s. Intron VTD, Russia</p> <div> <div> <h3>Advantages of EasyPig UT</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Non-expensive. Possibility to run while performing pipeline cleaning.</li> <li>Measurement of protective coating thickness allowing to forecast corrosion damage</li> <li>Detection of laminations in pipeline wall</li> <li>Detection of pipe wall metal thickness and internal pipe profile allowing to estimate the time of pipelines safe operation.</li> <li>Inspection of non-ferromagnetic pipes including the ones made of polyethylene and stainless steel</li> <li>Detection of severe defects and pipeline features, including illegal tapping</li> <li>Detection of pipeline inner radius</li> </ul> <div> <div> <h3>Advantages of EasyPigTM</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Low inspection costs due to removal of excessive inspection information, allowing to include in-line inspection using EasyPigTM into routine pipeline cleaning operations</li> <li>Design allowing to inspect pipelines unpiggable for traditional in-line inspection tools</li> <li>Brushless design</li> <li>Pipeline condition monitoring including provision of information on illegal tapping locations</li> <li>Short term data analysis and report preparation</li> </ul> <div> <div> <h3>Applications</h3> </div> </div> <div> <div> <ul> <li>Purpose : In-line diagnostics of field pipelines, identifying defects and structural features of the internal and external surfaces of the walls of pipelines, as well as determining their position by remote and section of the pipeline</li> <li>Area of Application – Field pipelines of oil gathering, Reservoir pressure maintenance system, Products pipeline, Field gas pipelines, Distribution gas pipelines, etc.</li> <li>Operating pressure: – from 1MPa to 10MPa. In gas minimum pressure is 2MPa.</li> <li>Detects metal loss, corrosion defects, pinholes on the inner and outer surface of the pipeline wall, defects in welds (lack of penetration, inconsistencies).</li> </ul> <p>Source:- https://www.ndts.co.in/corrosion-mapping-defect-detection-of-field-pipelines-4-6-8-by-intelligent-pigging/</p> </div> </div> </div> </div> </div> </div>
<p><a href="https://www.ndts.co.in/visual-inspection/" rel="noopener noreferrer" target="_blank">RVI(boroscopy/Videoscopy)</a> is used to visually inspect plant components for surface defects, general condition, degradation, blockages & foreign materials. It can be used as standalone inspection or as a complement to other NDE techniques, such as eddy current, ultrasonic or x-ray, in order to qualify unclear signals or pinpoint where a more thorough inspection is needed.</p> <p>We offer a turnkey inspection solutions, whether it is inspecting high energy piping, performing a loose part retrieval or diagnosing an operational problem, we bring the right equipment to visually inspect (or retrieve) it, record it, and report it back to you.</p> <div> <div> <div> <div> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Blockage detection in piping & tubing’s</li> <li>Discolouration in process pipping</li> <li>Gear-Box, Compressors & Turbine Inspection</li> <li>Foreign material search & retrieval</li> </ul> </div> </div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <div> <h3>Inspection Of Large Vessels</h3> </div> </div> <div> </div> <div> <div> <p>Remote Visual Inspection (RVI) of large surface areas requires an industrial Pan, Tilt, and Zoom (PTZ) camera. The PTZ camera requires openings of 5-inches or more. It can also be submerged underwater up to 100-feet. The auxiliary lamp module provides extra lighting for extremely dark inspection environments.</p> </div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Coke Drum Lining Inspection</li> <li>Floating Roof Inspection</li> <li>Refractory Linings– Cyclone</li> <li>Storage Tanks & Spheres</li> <li>Nuclear fuel bundle serial number verification</li> </ul> </div> </div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <div> <h3>Inspection Of Pipes</h3> </div> </div> <div> </div> <div> <div> <p>We use steerable crawler to inspect pipes ranging from 8” to 48”. These crawlers are well suited for carrying out inspections on pipe systems, especially those that have a lot of bends and pipe branches. The remote pendant easily steers the crawler around multiple elbows & solid obstructions and controls the crawler’s focus, lighting, speed and pan & tilt functions. This is the most common inspection technique to inspect sewer, drain, water, electrical conduit and process lines in various industries.</p> </div> </div> <div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Air ducts and electrical conduits</li> <li>Lube oil and steam lines</li> <li>Steam headers</li> <li>Sea Water Lines, Cooling Water Lines, Process Pipelines</li> </ul> <p>Source:- https://www.ndts.co.in/remote-visual-inspection-rvi-by-specialized-cameras/</p> </div> </div> </div> </div> </div> </div>
<div> <div> <p>Large number of ferrous steel wire ropes is in use in different industries. Premature discard and replacement with the new rope involves in unreasonable costs, while operating the rope, which already reached discard criteria, is dangerous. Visual inspection is obvious, but only visual examination is not sufficient due to specific rope design. Non-destructive magnetic inspection of ropes enables to gather comprehensive data for making reasoned decision. <a href="https://www.ndts.co.in/magnetic-flux-leakage-testing/" rel="noopener noreferrer" target="_blank">Magnetic flux leakage (MFL)</a> equipment with strong magnetization can inspect ropes reliably, and smart software facilitates data interpretation.</p> <p>Our rope inspection services comprise inspection of the new ropes either during production run or delivered to the customer, and on-site inspection onshore, offshore, above ground and underground. Inspection is carried in accordance with national / international standards and norms. This enables large cost savings as wire ropes can be used safely for a longer period of time.</p> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Magnetic Flux Leakage based Inspection to Detect Local Flaws (LF) : Broken Wire, Corrosion Pit, Rope Core Cracking, etc.</li> <li>Loss of Metallic Area (LMA) : Volumetric Defects, Abrasion Loss, Loss due to Fatigue, Corrosion Loss, etc.</li> <li>Inspection Speed 4 mtr. per second</li> <li>Minimal cleaning / surface preparation of rope required as it can negotiate dust and lubricant over the rope</li> <li>Battery Operated setup, thus easy mobility at remote locations.</li> </ul> <p>Source:-https://www.ndts.co.in/wire-rope-testing-by-magnetic-flux-leakage/</p> </div> </div> </div> </div>
<p><a href="https://www.ndts.co.in/pulsed-eddy-current/" rel="noopener noreferrer" target="_blank">PEC</a> is an advance electromagnetic inspection technology which majorly detect remaining wall thickness under insulation in ferrous material. It uses square pulse signal to induced eddy current which can penetrate more deeply in magnetic material than conventional Eddy Currents. PEC can measure thickness through all insulation materials, coatings, fixed chicken wire, concrete, re-bars, corrosion product, stainless steel sheeting, aluminium sheeting, water marine growth, blistering scabs, through metallic mesh.</p> <div> <div> <div> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Hot & Cold Insulated Line (Temp : -33 To +550 deg. Celsius)</li> <li>Insulated Vessels & Reactors</li> <li>Insulated Chilled Water Lines</li> <li>Column Skirting</li> <li>Jetty Pipelines & Structures</li> <li>Storage Tank Annular Plate Scanning</li> <li>Corrosion under fireproofing of supports legs of storage spheres.</li> <li>Remaining ligament underneath corrosion scabs.</li> </ul> </div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <h3>Advantages</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Cost for removal of insulation and re insulation is saved.</li> <li>Reduced Inspection Time resulting in high productivity.</li> <li>Grid mapping mode 2 to 10 time faster (usually <1 s).</li> <li>Less operator dependent.</li> <li>Less affected by lift off variations, weather jacket overlap, straps.</li> <li>Better detection of small defects.</li> <li>Unaffected by structures above probes.</li> <li>6 meter length of telescopic pole enables to minimize scaffolding requirement.</li> </ul> <p>Source:-https://www.ndts.co.in/corrosion-under-insulation-by-pulsed-eddy-current-pec/</p> </div> </div> </div> </div> </div>
<div> <div> <div> <div> <div> <div> <p>We have experience in planning, managing and carrying out <a href="https://www.ndts.co.in/phased-array-ultrasonic-testings/" rel="noopener noreferrer" target="_blank">PAUT</a> & <a href="https://www.ndts.co.in/time-of-flight-diffractions/" rel="noopener noreferrer" target="_blank">TOFD</a> Services. We advise and develop PAUT & TOFD procedures and have specialist scanning equipment for carrying out inspections. We also provide PAUT & TOFD inspection simultaneously which increases the probability of defect detection and measurement of length and height of the defect to a high precision. This helps in detecting and discriminating the fatigue cracks which leads to catastrophic failures.</p> </div> </div> </div> </div> </div> </div> <div> <div> <div> <div> <div> </div> <div> <div> <p>PAUT is an advanced method of ultrasonic testing. Instead of a single element and beam, phased array uses multiple ultrasonic elements and electronic time delays to create beams by constructive and destructive interference. PAUT offers significant technical advantages for weld testing over conventional ultrasonic as the phased array beams can be steered, scanned, swept and focused electronically from a fixed probe position. Beam steering permits the selected beam angles to be optimized ultrasonically by orienting or focusing them perpendicular to the predicted discontinuities.</p> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Shell to Dish End Joints</li> <li>Circular Seam & Long Seam Welds, Joints, T-Joints</li> <li>Category D Joints / Pressure Part, Weld-o-lets, etc.</li> <li>Structural Welds, Knuckle joint, etc.</li> <li>SS & AS Cladded plate Joints</li> <li>Boiler Weld Joints (Dia. 1.5” – 4”)</li> </ul> </div> </div> <div> <div> <h3>Advantages Of PAUT</h3> </div> </div> <div> </div> <div> <div> <ul> <li>High-speed inspection using single-axis scans instead of conventional raster scan</li> <li>Near-optimal focal length and focal spot for various areas of complex parts or thick components</li> <li>Small, simple probe assembly with multiple beams from a single probe</li> <li>Easy-to-install, one-axis scanning systems</li> <li>Better detection in austenitic materials and dissimilar metal (DM) welds</li> <li>Alternative to Radiographic imaging</li> </ul> </div> </div> <div> <div> <h3>Advantages Of TOFD</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Full record of examined weld sections in A-Scan, B-Scan, C-Scan, D-Scan and TOFD Scan presentation. Storage of full examination results</li> <li>Real Time vision on quality of welds by the operator during examination</li> <li>Accuracy in sizing the through thickness dimensions</li> <li>High sensitivity in detecting planar, vertical or oriented defects like cracks or lack of fusion not visible by radiography and hardly to detect by standard ultrasonic pulse echo technique. For these reasons ASME Code with the Code Case 2235 has permitted to perform on pressure vessel welds TOFD examination in lieu of radiography</li> <li>Full control on contact effectiveness and coverage by examining the TOFD map in any time after the examination</li> <li>Supervision of the examination in the dynamic way as during the scanning on your PC in the office or far away the job</li> </ul> <p>Source :- https://www.ndts.co.in/weld-inspection-by-advance-ultrasonic-paut-tofd/</p> </div> </div> </div> </div> </div> </div> </div> </div>
<p><a href="https://www.ndts.co.in/eddy-current-testing-2/" rel="noopener noreferrer" target="_blank">Eddy Current Testing (ECT)</a> works on the principle of electromagnetic induction. In ECT a probe is excited with sinusoidal alternating current to induce eddy current in an electrically conducting material such as stainless steel, aluminium etc. The change in coil impedance that arises due to distortion at regions of discontinuities and associated magnetic flux leakage is measured. This is a surface technique and can readily detect very shallow surface defect and sub-surface defects. ECT is a simple, high-speed, high sensitive, versatile and reliable NDT technique and is popularly used in many engineering industries.</p> <div> <div> <div> <div> <div> <p><a href="https://www.ndts.co.in/remote-field-testing/" rel="noopener noreferrer" target="_blank">Remote Field Testing (RFT)</a> is one of the several electromagnetic testing methods commonly employed in the field of non-destructive testing. RFT may also referred to as RFEC (Remote Field Eddy Current) or RFET (Remote Field Electromagnetic Technique). RFT is primarily used to inspect ferromagnetic tubing since conventional ECT have difficulty in inspecting the full thickness of the tube wall due to the strong skin effect in ferromagnetic materials.</p> <p><a href="https://www.ndts.co.in/near-field-testing/" rel="noopener noreferrer" target="_blank">Near Field Testing (NFT)</a> technology is a rapid and cost-effective solution intended specifically for fin-fan carbon-steel tubing inspection. This technology relies on a simple driver-pickup eddy current probe design providing very simple signal analysis. NFT is specifically suited to the detection of internal corrosion, erosion or pitting in carbon steel tubing. The NFT probes measure lift-off or ‘fill factor’ and convert it to amplitude-based signals. Because eddy-current penetration is limited to the inner surface of the tube, NFT probes are not affected by the fin geometry on the outside of the tube.</p> <p>The conventional ECT faces major limitations with respect to detection & sizing of circumferential cracking and extent of volumetric flaws in tubular. Rotating probes is a solution but it reduces the inspection speed. Therefore <a href="https://www.ndts.co.in/eddy-current-array-2/" rel="noopener noreferrer" target="_blank">Eddy Current Array (ECA)</a> along with bobbin probe technology is the solution to perform high speed inspection in a single pass.</p> <p><a href="https://www.ndts.co.in/magnetic-flux-leakage-testing/" rel="noopener noreferrer" target="_blank">Magnetic Flux Leakage (MFL)</a> uses a powerful magnets to magnetize the conductive material under test where a magnetic field is created around defects like corrosion or material loss. The magnetic field induced in the part saturates it until it can no longer hold any more flux. The flux overflows and leaks out of the pipe wall and strategically placed sensors can accurately measure the three-dimensional vector of the leakage field. Because magnetic flux leakage is a vector and that a sensor can only measure one direction, any given probe must have three sensors to accurately measure the axial, radial, and circumferential components of an MFL signal.</p> <p><a href="https://www.ndts.co.in/iris/" rel="noopener noreferrer" target="_blank">Internal Rotary Inspection System (IRIS)</a> is an ultrasonic method for testing of pipes and tubes. The ultrasonic beam allows detection of metal loss from the inside and outside of the tube wall. It is a fairly sensitive technique. The sensitivity achieved will depend on tube dimensions and tube cleanliness. Both ferromagnetic and non-ferromagnetic tubes can be inspected. A three dimensional picture of the defect is obtained, thus the defect profile and its depth is provided. Interpretation of results is easier than in the other techniques</p> <div> <div> <h3>Advantages Of ECT</h3> </div> </div> <div> </div> <div> <div> <ul> <li>High examination Rate i.e. 80-100 or more tubes can be Inspected/ hour</li> <li>Examination of Ferrous and Non Ferrous material</li> <li>Repeatability comparison between historical and subsequent test results to establish corrosion rate and remaining life</li> <li>ECT discriminates between ID and OD defect orientation</li> <li>ECT is sensitive to gradual wall loss, cracking, small pitting etc.</li> </ul> <div> <div> <h3>Advantages Of RFT</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Detection of wall loss</li> <li>Ideal for ferrous tubes</li> <li>RFT can detect defects away from tube support plate and tube sheet</li> <li>Detect localized corrosion/erosion</li> <li>Inspect ferromagnetic materials (carbon steel and stainless steel)</li> </ul> <div> <div> <h3>Advantages Of NFT</h3> </div> </div> <div> </div> <div> <div> <ul> <li>NFT is faster than electromagnetic testing techniques</li> <li>External reference coil is not required during NFT</li> <li>The results of NFT is unaffected by support plates and Tube sheets</li> </ul> <div> <div> <h3>Advantages Of ECA</h3> </div> </div> <div> </div> <div> <div> <ul> <li>One-pass inspection providing bobbin and array probe signal high definition which provide reliable and repeatable detection of small defects whatever the position around the circumference</li> <li>High sensitivity to pitting and circumferential cracking (ID and OD circumferential crack detected down to 20% depth and 25° extension)</li> <li>More reliable characterization of flaws with C-scan imaging improved detection of circumferential cracking under tube sheets</li> </ul> <div> <div> <h3>Advantages Of MFL</h3> </div> </div> <div> </div> <div> <div> <ul> <li>One of the few methods used to inspect finned tubes</li> <li>Can be used on all ferromagnetic materials</li> <li>Good sensitivity to pitting</li> <li>High-speed inspection</li> </ul> <div> <div> <h3>Advantages Of IRIS</h3> </div> </div> <div> </div> <div> <div> <ul> <li>IRIS can be applied on almost each material</li> <li>Exact determination of location of pitting/corrosion</li> <li>Small changes in thickness measurable</li> <li>No negative effect on results caused by external items like fins or baffles</li> <li>Measurement produces nominal value for wall thickness of pipe</li> <li>No calibration pipes needed</li> <li>IRIS can also be used in steam drums</li> </ul> <p>Source:- https://www.ndts.co.in/tube-inspection-by-ect-reft-nft-eca-mfl-iris/</p> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div> </div>
<p>Thickness measurement at elevated temperature is a special category. Standard transducers are not designed to withstand elevated temperatures and will get damaged/destroyed due to varying thermal expansion coefficients of the materials used to construct them. Variation in material temperature affects sound velocity and accuracy of thickness measurements. We use <a href="https://www.ndts.co.in/emat-and-applications/" rel="noopener noreferrer" target="_blank">Electro Magnetic Acoustic Transducer (EMAT)</a> equipment without couplant to accompany this task.</p> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Convection heater coils, Process Pipelines, Reactor Vessels & Mounted Bullets, Distillation Columns & Dryers</li> <li>EMAT is accurate to 12.7μm (0.0005”) with a resolution up to 3mm thickness.</li> <li>Capable to withstand temperatures from -30⁰C to 650⁰C with no active cooling.</li> </ul> <p>Source:- https://www.ndts.co.in/in-service-high-temperature-up-to-600%E2%81%B0c-thickness-measurement-by-emat/</p> </div> </div>
<p>We offer this service using temate TG-IS (B) which is a redesigned FST-GAGE or Fast Scanning Thickness Gage, first introduced in 1994. FST-GAGE was developed by Electric Power Research Institute (EPRI) and Babcock & Wilcox (B&W) specifically to scan boiler tubes and provide a continuous measurement of tube wall thickness.</p> <p>The system works on <a href="https://www.ndts.co.in/emat-and-applications/" rel="noopener noreferrer" target="_blank">Electro Magnetic Acoustic Transducer (EMAT)</a> technique providing accurate thickness (with accuracy of +/- 0.127mm) readings with none or minimal tube surface preparation. The probe with integrated encoder and light indicators (for fast visual alert to the operator) is manually scanned along the boiler tube while the system records the thickness & alarms if the tube is below a pre-programmed threshold or other defect conditions are triggered. The system saves a complete record of each tube & the whole boiler for later post analysis & tracking.</p> <p>Apart from detecting wall loss the system is capable of detecting hydrogen damage, pitting & caustic gouging (by measuring signal attenuation) which is not detected with conventional means. It works on carbon steel and clad tubes. Tube thickness ranges from 3.8mm to 12.7mm & the minimum tube diameter requirement is 22.2mm, the tube surface can be oxidized, rough or pitted (scale-free). The technique permits 100% inspection of the boiler instead of spot checking at up to 15cm/s of scanning speed. The boiler mapping tool permits easy visualization of boiler walls with results of inspection for fast analysis and interpretation.</p> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Rare chances of missing defects compared to conventional spot thickness gauging</li> <li>Couplant free inspection, minimum surface preparation required</li> <li>± 0.127mm thickness accuracy</li> <li>Trending analysis by super imposing the thickness readings on the base line data</li> <li>Thickness Measurement possible on tubes having heavily pitted non-parallel walls</li> <li>Scanning speed: 500 to 700mtr. In 8hrs. shift (depending upon the accessibility)</li> </ul> <p>Source:- https://www.ndts.co.in/boiler-water-wall-tube-inspection-by-emat/</p> </div> </div>
<p>We offer ultrasonic pigging (by using In-line inspection tool EasyPig™ UT) and MFL Pigging (by using In-line inspection tool EasyPig TM) services for small diameter (4”, 6” & 8”) field pipelines with the help of M/s. Intron VTD, Russia</p> <div> <div> <h3>Advantages of EasyPig UT</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Non-expensive. Possibility to run while performing pipeline cleaning.</li> <li>Measurement of protective coating thickness allowing to forecast corrosion damage</li> <li>Detection of laminations in pipeline wall</li> <li>Detection of pipe wall metal thickness and internal pipe profile allowing to estimate the time of pipelines safe operation.</li> <li>Inspection of non-ferromagnetic pipes including the ones made of polyethylene and stainless steel</li> <li>Detection of severe defects and pipeline features, including illegal tapping</li> <li>Detection of pipeline inner radius</li> </ul> <div> <div> <h3>Advantages of EasyPigTM</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Low inspection costs due to removal of excessive inspection information, allowing to include in-line inspection using EasyPigTM into routine pipeline cleaning operations</li> <li>Design allowing to inspect pipelines unpiggable for traditional in-line inspection tools</li> <li>Brushless design</li> <li>Pipeline condition monitoring including provision of information on illegal tapping locations</li> <li>Short term data analysis and report preparation</li> </ul> <div> <div> <h3>Applications</h3> </div> </div> <div> <div> <ul> <li>Purpose : In-line diagnostics of field pipelines, identifying defects and structural features of the internal and external surfaces of the walls of pipelines, as well as determining their position by remote and section of the pipeline</li> <li>Area of Application – Field pipelines of oil gathering, Reservoir pressure maintenance system, Products pipeline, Field gas pipelines, Distribution gas pipelines, etc.</li> <li>Operating pressure: – from 1MPa to 10MPa. In gas minimum pressure is 2MPa.</li> <li>Detects metal loss, corrosion defects, pinholes on the inner and outer surface of the pipeline wall, defects in welds (lack of penetration, inconsistencies).</li> </ul> <p>Source:- https://www.ndts.co.in/corrosion-mapping-defect-detection-of-field-pipelines-4-6-8-by-intelligent-pigging/</p> </div> </div> </div> </div> </div> </div>
<p><a href="https://www.ndts.co.in/visual-inspection/" rel="noopener noreferrer" target="_blank">RVI(boroscopy/Videoscopy)</a> is used to visually inspect plant components for surface defects, general condition, degradation, blockages & foreign materials. It can be used as standalone inspection or as a complement to other NDE techniques, such as eddy current, ultrasonic or x-ray, in order to qualify unclear signals or pinpoint where a more thorough inspection is needed.</p> <p>We offer a turnkey inspection solutions, whether it is inspecting high energy piping, performing a loose part retrieval or diagnosing an operational problem, we bring the right equipment to visually inspect (or retrieve) it, record it, and report it back to you.</p> <div> <div> <div> <div> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Blockage detection in piping & tubing’s</li> <li>Discolouration in process pipping</li> <li>Gear-Box, Compressors & Turbine Inspection</li> <li>Foreign material search & retrieval</li> </ul> </div> </div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <div> <h3>Inspection Of Large Vessels</h3> </div> </div> <div> </div> <div> <div> <p>Remote Visual Inspection (RVI) of large surface areas requires an industrial Pan, Tilt, and Zoom (PTZ) camera. The PTZ camera requires openings of 5-inches or more. It can also be submerged underwater up to 100-feet. The auxiliary lamp module provides extra lighting for extremely dark inspection environments.</p> </div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Coke Drum Lining Inspection</li> <li>Floating Roof Inspection</li> <li>Refractory Linings– Cyclone</li> <li>Storage Tanks & Spheres</li> <li>Nuclear fuel bundle serial number verification</li> </ul> </div> </div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <div> <h3>Inspection Of Pipes</h3> </div> </div> <div> </div> <div> <div> <p>We use steerable crawler to inspect pipes ranging from 8” to 48”. These crawlers are well suited for carrying out inspections on pipe systems, especially those that have a lot of bends and pipe branches. The remote pendant easily steers the crawler around multiple elbows & solid obstructions and controls the crawler’s focus, lighting, speed and pan & tilt functions. This is the most common inspection technique to inspect sewer, drain, water, electrical conduit and process lines in various industries.</p> </div> </div> <div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Air ducts and electrical conduits</li> <li>Lube oil and steam lines</li> <li>Steam headers</li> <li>Sea Water Lines, Cooling Water Lines, Process Pipelines</li> </ul> <p>Source:- https://www.ndts.co.in/remote-visual-inspection-rvi-by-specialized-cameras/</p> </div> </div> </div> </div> </div> </div>
<div> <div> <p>Large number of ferrous steel wire ropes is in use in different industries. Premature discard and replacement with the new rope involves in unreasonable costs, while operating the rope, which already reached discard criteria, is dangerous. Visual inspection is obvious, but only visual examination is not sufficient due to specific rope design. Non-destructive magnetic inspection of ropes enables to gather comprehensive data for making reasoned decision. <a href="https://www.ndts.co.in/magnetic-flux-leakage-testing/" rel="noopener noreferrer" target="_blank">Magnetic flux leakage (MFL)</a> equipment with strong magnetization can inspect ropes reliably, and smart software facilitates data interpretation.</p> <p>Our rope inspection services comprise inspection of the new ropes either during production run or delivered to the customer, and on-site inspection onshore, offshore, above ground and underground. Inspection is carried in accordance with national / international standards and norms. This enables large cost savings as wire ropes can be used safely for a longer period of time.</p> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Magnetic Flux Leakage based Inspection to Detect Local Flaws (LF) : Broken Wire, Corrosion Pit, Rope Core Cracking, etc.</li> <li>Loss of Metallic Area (LMA) : Volumetric Defects, Abrasion Loss, Loss due to Fatigue, Corrosion Loss, etc.</li> <li>Inspection Speed 4 mtr. per second</li> <li>Minimal cleaning / surface preparation of rope required as it can negotiate dust and lubricant over the rope</li> <li>Battery Operated setup, thus easy mobility at remote locations.</li> </ul> <p>Source:-https://www.ndts.co.in/wire-rope-testing-by-magnetic-flux-leakage/</p> </div> </div> </div> </div>
<p><a href="https://www.ndts.co.in/pulsed-eddy-current/" rel="noopener noreferrer" target="_blank">PEC</a> is an advance electromagnetic inspection technology which majorly detect remaining wall thickness under insulation in ferrous material. It uses square pulse signal to induced eddy current which can penetrate more deeply in magnetic material than conventional Eddy Currents. PEC can measure thickness through all insulation materials, coatings, fixed chicken wire, concrete, re-bars, corrosion product, stainless steel sheeting, aluminium sheeting, water marine growth, blistering scabs, through metallic mesh.</p> <div> <div> <div> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Hot & Cold Insulated Line (Temp : -33 To +550 deg. Celsius)</li> <li>Insulated Vessels & Reactors</li> <li>Insulated Chilled Water Lines</li> <li>Column Skirting</li> <li>Jetty Pipelines & Structures</li> <li>Storage Tank Annular Plate Scanning</li> <li>Corrosion under fireproofing of supports legs of storage spheres.</li> <li>Remaining ligament underneath corrosion scabs.</li> </ul> </div> </div> </div> </div> </div> <div> <div> <div> <div> <div> <h3>Advantages</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Cost for removal of insulation and re insulation is saved.</li> <li>Reduced Inspection Time resulting in high productivity.</li> <li>Grid mapping mode 2 to 10 time faster (usually <1 s).</li> <li>Less operator dependent.</li> <li>Less affected by lift off variations, weather jacket overlap, straps.</li> <li>Better detection of small defects.</li> <li>Unaffected by structures above probes.</li> <li>6 meter length of telescopic pole enables to minimize scaffolding requirement.</li> </ul> <p>Source:-https://www.ndts.co.in/corrosion-under-insulation-by-pulsed-eddy-current-pec/</p> </div> </div> </div> </div> </div>
<div> <div> <div> <div> <div> <div> <p>We have experience in planning, managing and carrying out <a href="https://www.ndts.co.in/phased-array-ultrasonic-testings/" rel="noopener noreferrer" target="_blank">PAUT</a> & <a href="https://www.ndts.co.in/time-of-flight-diffractions/" rel="noopener noreferrer" target="_blank">TOFD</a> Services. We advise and develop PAUT & TOFD procedures and have specialist scanning equipment for carrying out inspections. We also provide PAUT & TOFD inspection simultaneously which increases the probability of defect detection and measurement of length and height of the defect to a high precision. This helps in detecting and discriminating the fatigue cracks which leads to catastrophic failures.</p> </div> </div> </div> </div> </div> </div> <div> <div> <div> <div> <div> </div> <div> <div> <p>PAUT is an advanced method of ultrasonic testing. Instead of a single element and beam, phased array uses multiple ultrasonic elements and electronic time delays to create beams by constructive and destructive interference. PAUT offers significant technical advantages for weld testing over conventional ultrasonic as the phased array beams can be steered, scanned, swept and focused electronically from a fixed probe position. Beam steering permits the selected beam angles to be optimized ultrasonically by orienting or focusing them perpendicular to the predicted discontinuities.</p> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Shell to Dish End Joints</li> <li>Circular Seam & Long Seam Welds, Joints, T-Joints</li> <li>Category D Joints / Pressure Part, Weld-o-lets, etc.</li> <li>Structural Welds, Knuckle joint, etc.</li> <li>SS & AS Cladded plate Joints</li> <li>Boiler Weld Joints (Dia. 1.5” – 4”)</li> </ul> </div> </div> <div> <div> <h3>Advantages Of PAUT</h3> </div> </div> <div> </div> <div> <div> <ul> <li>High-speed inspection using single-axis scans instead of conventional raster scan</li> <li>Near-optimal focal length and focal spot for various areas of complex parts or thick components</li> <li>Small, simple probe assembly with multiple beams from a single probe</li> <li>Easy-to-install, one-axis scanning systems</li> <li>Better detection in austenitic materials and dissimilar metal (DM) welds</li> <li>Alternative to Radiographic imaging</li> </ul> </div> </div> <div> <div> <h3>Advantages Of TOFD</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Full record of examined weld sections in A-Scan, B-Scan, C-Scan, D-Scan and TOFD Scan presentation. Storage of full examination results</li> <li>Real Time vision on quality of welds by the operator during examination</li> <li>Accuracy in sizing the through thickness dimensions</li> <li>High sensitivity in detecting planar, vertical or oriented defects like cracks or lack of fusion not visible by radiography and hardly to detect by standard ultrasonic pulse echo technique. For these reasons ASME Code with the Code Case 2235 has permitted to perform on pressure vessel welds TOFD examination in lieu of radiography</li> <li>Full control on contact effectiveness and coverage by examining the TOFD map in any time after the examination</li> <li>Supervision of the examination in the dynamic way as during the scanning on your PC in the office or far away the job</li> </ul> <p>Source :- https://www.ndts.co.in/weld-inspection-by-advance-ultrasonic-paut-tofd/</p> </div> </div> </div> </div> </div> </div> </div> </div>
<p><a href="https://www.ndts.co.in/eddy-current-testing-2/" rel="noopener noreferrer" target="_blank">Eddy Current Testing (ECT)</a> works on the principle of electromagnetic induction. In ECT a probe is excited with sinusoidal alternating current to induce eddy current in an electrically conducting material such as stainless steel, aluminium etc. The change in coil impedance that arises due to distortion at regions of discontinuities and associated magnetic flux leakage is measured. This is a surface technique and can readily detect very shallow surface defect and sub-surface defects. ECT is a simple, high-speed, high sensitive, versatile and reliable NDT technique and is popularly used in many engineering industries.</p> <div> <div> <div> <div> <div> <p><a href="https://www.ndts.co.in/remote-field-testing/" rel="noopener noreferrer" target="_blank">Remote Field Testing (RFT)</a> is one of the several electromagnetic testing methods commonly employed in the field of non-destructive testing. RFT may also referred to as RFEC (Remote Field Eddy Current) or RFET (Remote Field Electromagnetic Technique). RFT is primarily used to inspect ferromagnetic tubing since conventional ECT have difficulty in inspecting the full thickness of the tube wall due to the strong skin effect in ferromagnetic materials.</p> <p><a href="https://www.ndts.co.in/near-field-testing/" rel="noopener noreferrer" target="_blank">Near Field Testing (NFT)</a> technology is a rapid and cost-effective solution intended specifically for fin-fan carbon-steel tubing inspection. This technology relies on a simple driver-pickup eddy current probe design providing very simple signal analysis. NFT is specifically suited to the detection of internal corrosion, erosion or pitting in carbon steel tubing. The NFT probes measure lift-off or ‘fill factor’ and convert it to amplitude-based signals. Because eddy-current penetration is limited to the inner surface of the tube, NFT probes are not affected by the fin geometry on the outside of the tube.</p> <p>The conventional ECT faces major limitations with respect to detection & sizing of circumferential cracking and extent of volumetric flaws in tubular. Rotating probes is a solution but it reduces the inspection speed. Therefore <a href="https://www.ndts.co.in/eddy-current-array-2/" rel="noopener noreferrer" target="_blank">Eddy Current Array (ECA)</a> along with bobbin probe technology is the solution to perform high speed inspection in a single pass.</p> <p><a href="https://www.ndts.co.in/magnetic-flux-leakage-testing/" rel="noopener noreferrer" target="_blank">Magnetic Flux Leakage (MFL)</a> uses a powerful magnets to magnetize the conductive material under test where a magnetic field is created around defects like corrosion or material loss. The magnetic field induced in the part saturates it until it can no longer hold any more flux. The flux overflows and leaks out of the pipe wall and strategically placed sensors can accurately measure the three-dimensional vector of the leakage field. Because magnetic flux leakage is a vector and that a sensor can only measure one direction, any given probe must have three sensors to accurately measure the axial, radial, and circumferential components of an MFL signal.</p> <p><a href="https://www.ndts.co.in/iris/" rel="noopener noreferrer" target="_blank">Internal Rotary Inspection System (IRIS)</a> is an ultrasonic method for testing of pipes and tubes. The ultrasonic beam allows detection of metal loss from the inside and outside of the tube wall. It is a fairly sensitive technique. The sensitivity achieved will depend on tube dimensions and tube cleanliness. Both ferromagnetic and non-ferromagnetic tubes can be inspected. A three dimensional picture of the defect is obtained, thus the defect profile and its depth is provided. Interpretation of results is easier than in the other techniques</p> <div> <div> <h3>Advantages Of ECT</h3> </div> </div> <div> </div> <div> <div> <ul> <li>High examination Rate i.e. 80-100 or more tubes can be Inspected/ hour</li> <li>Examination of Ferrous and Non Ferrous material</li> <li>Repeatability comparison between historical and subsequent test results to establish corrosion rate and remaining life</li> <li>ECT discriminates between ID and OD defect orientation</li> <li>ECT is sensitive to gradual wall loss, cracking, small pitting etc.</li> </ul> <div> <div> <h3>Advantages Of RFT</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Detection of wall loss</li> <li>Ideal for ferrous tubes</li> <li>RFT can detect defects away from tube support plate and tube sheet</li> <li>Detect localized corrosion/erosion</li> <li>Inspect ferromagnetic materials (carbon steel and stainless steel)</li> </ul> <div> <div> <h3>Advantages Of NFT</h3> </div> </div> <div> </div> <div> <div> <ul> <li>NFT is faster than electromagnetic testing techniques</li> <li>External reference coil is not required during NFT</li> <li>The results of NFT is unaffected by support plates and Tube sheets</li> </ul> <div> <div> <h3>Advantages Of ECA</h3> </div> </div> <div> </div> <div> <div> <ul> <li>One-pass inspection providing bobbin and array probe signal high definition which provide reliable and repeatable detection of small defects whatever the position around the circumference</li> <li>High sensitivity to pitting and circumferential cracking (ID and OD circumferential crack detected down to 20% depth and 25° extension)</li> <li>More reliable characterization of flaws with C-scan imaging improved detection of circumferential cracking under tube sheets</li> </ul> <div> <div> <h3>Advantages Of MFL</h3> </div> </div> <div> </div> <div> <div> <ul> <li>One of the few methods used to inspect finned tubes</li> <li>Can be used on all ferromagnetic materials</li> <li>Good sensitivity to pitting</li> <li>High-speed inspection</li> </ul> <div> <div> <h3>Advantages Of IRIS</h3> </div> </div> <div> </div> <div> <div> <ul> <li>IRIS can be applied on almost each material</li> <li>Exact determination of location of pitting/corrosion</li> <li>Small changes in thickness measurable</li> <li>No negative effect on results caused by external items like fins or baffles</li> <li>Measurement produces nominal value for wall thickness of pipe</li> <li>No calibration pipes needed</li> <li>IRIS can also be used in steam drums</li> </ul> <p>Source:- https://www.ndts.co.in/tube-inspection-by-ect-reft-nft-eca-mfl-iris/</p> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div> </div>
<p>Thickness measurement at elevated temperature is a special category. Standard transducers are not designed to withstand elevated temperatures and will get damaged/destroyed due to varying thermal expansion coefficients of the materials used to construct them. Variation in material temperature affects sound velocity and accuracy of thickness measurements. We use <a href="https://www.ndts.co.in/emat-and-applications/" rel="noopener noreferrer" target="_blank">Electro Magnetic Acoustic Transducer (EMAT)</a> equipment without couplant to accompany this task.</p> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Convection heater coils, Process Pipelines, Reactor Vessels & Mounted Bullets, Distillation Columns & Dryers</li> <li>EMAT is accurate to 12.7μm (0.0005”) with a resolution up to 3mm thickness.</li> <li>Capable to withstand temperatures from -30⁰C to 650⁰C with no active cooling.</li> </ul> <p>Source:- https://www.ndts.co.in/in-service-high-temperature-up-to-600%E2%81%B0c-thickness-measurement-by-emat/</p> </div> </div>
<p>We offer this service using temate TG-IS (B) which is a redesigned FST-GAGE or Fast Scanning Thickness Gage, first introduced in 1994. FST-GAGE was developed by Electric Power Research Institute (EPRI) and Babcock & Wilcox (B&W) specifically to scan boiler tubes and provide a continuous measurement of tube wall thickness.</p> <p>The system works on <a href="https://www.ndts.co.in/emat-and-applications/" rel="noopener noreferrer" target="_blank">Electro Magnetic Acoustic Transducer (EMAT)</a> technique providing accurate thickness (with accuracy of +/- 0.127mm) readings with none or minimal tube surface preparation. The probe with integrated encoder and light indicators (for fast visual alert to the operator) is manually scanned along the boiler tube while the system records the thickness & alarms if the tube is below a pre-programmed threshold or other defect conditions are triggered. The system saves a complete record of each tube & the whole boiler for later post analysis & tracking.</p> <p>Apart from detecting wall loss the system is capable of detecting hydrogen damage, pitting & caustic gouging (by measuring signal attenuation) which is not detected with conventional means. It works on carbon steel and clad tubes. Tube thickness ranges from 3.8mm to 12.7mm & the minimum tube diameter requirement is 22.2mm, the tube surface can be oxidized, rough or pitted (scale-free). The technique permits 100% inspection of the boiler instead of spot checking at up to 15cm/s of scanning speed. The boiler mapping tool permits easy visualization of boiler walls with results of inspection for fast analysis and interpretation.</p> <div> <div> <h3>Applications</h3> </div> </div> <div> </div> <div> <div> <ul> <li>Rare chances of missing defects compared to conventional spot thickness gauging</li> <li>Couplant free inspection, minimum surface preparation required</li> <li>± 0.127mm thickness accuracy</li> <li>Trending analysis by super imposing the thickness readings on the base line data</li> <li>Thickness Measurement possible on tubes having heavily pitted non-parallel walls</li> <li>Scanning speed: 500 to 700mtr. In 8hrs. shift (depending upon the accessibility)</li> </ul> <p>Source:- https://www.ndts.co.in/boiler-water-wall-tube-inspection-by-emat/</p> </div> </div>
We offer ultrasonic pigging (by using In-line inspection tool EasyPig™ UT) and MFL Pigging (by using In-line inspection tool EasyPig TM) services for small diameter (4”, 6” & 8”) field pipelines with the help of M/s. Intron VTD, Russia
Source:- https://www.ndts.co.in/corrosion-mapping-defect-detection-of-field-pipelines-4-6-8-by-intelligent-pigging/
RVI(boroscopy/Videoscopy) is used to visually inspect plant components for surface defects, general condition, degradation, blockages & foreign materials. It can be used as standalone inspection or as a complement to other NDE techniques, such as eddy current, ultrasonic or x-ray, in order to qualify unclear signals or pinpoint where a more thorough inspection is needed.
We offer a turnkey inspection solutions, whether it is inspecting high energy piping, performing a loose part retrieval or diagnosing an operational problem, we bring the right equipment to visually inspect (or retrieve) it, record it, and report it back to you.
Remote Visual Inspection (RVI) of large surface areas requires an industrial Pan, Tilt, and Zoom (PTZ) camera. The PTZ camera requires openings of 5-inches or more. It can also be submerged underwater up to 100-feet. The auxiliary lamp module provides extra lighting for extremely dark inspection environments.
We use steerable crawler to inspect pipes ranging from 8” to 48”. These crawlers are well suited for carrying out inspections on pipe systems, especially those that have a lot of bends and pipe branches. The remote pendant easily steers the crawler around multiple elbows & solid obstructions and controls the crawler’s focus, lighting, speed and pan & tilt functions. This is the most common inspection technique to inspect sewer, drain, water, electrical conduit and process lines in various industries.
Source:- https://www.ndts.co.in/remote-visual-inspection-rvi-by-specialized-cameras/
Large number of ferrous steel wire ropes is in use in different industries. Premature discard and replacement with the new rope involves in unreasonable costs, while operating the rope, which already reached discard criteria, is dangerous. Visual inspection is obvious, but only visual examination is not sufficient due to specific rope design. Non-destructive magnetic inspection of ropes enables to gather comprehensive data for making reasoned decision. Magnetic flux leakage (MFL) equipment with strong magnetization can inspect ropes reliably, and smart software facilitates data interpretation.
Our rope inspection services comprise inspection of the new ropes either during production run or delivered to the customer, and on-site inspection onshore, offshore, above ground and underground. Inspection is carried in accordance with national / international standards and norms. This enables large cost savings as wire ropes can be used safely for a longer period of time.
Source:-https://www.ndts.co.in/wire-rope-testing-by-magnetic-flux-leakage/
PEC is an advance electromagnetic inspection technology which majorly detect remaining wall thickness under insulation in ferrous material. It uses square pulse signal to induced eddy current which can penetrate more deeply in magnetic material than conventional Eddy Currents. PEC can measure thickness through all insulation materials, coatings, fixed chicken wire, concrete, re-bars, corrosion product, stainless steel sheeting, aluminium sheeting, water marine growth, blistering scabs, through metallic mesh.
Source:-https://www.ndts.co.in/corrosion-under-insulation-by-pulsed-eddy-current-pec/
We have experience in planning, managing and carrying out PAUT & TOFD Services. We advise and develop PAUT & TOFD procedures and have specialist scanning equipment for carrying out inspections. We also provide PAUT & TOFD inspection simultaneously which increases the probability of defect detection and measurement of length and height of the defect to a high precision. This helps in detecting and discriminating the fatigue cracks which leads to catastrophic failures.
PAUT is an advanced method of ultrasonic testing. Instead of a single element and beam, phased array uses multiple ultrasonic elements and electronic time delays to create beams by constructive and destructive interference. PAUT offers significant technical advantages for weld testing over conventional ultrasonic as the phased array beams can be steered, scanned, swept and focused electronically from a fixed probe position. Beam steering permits the selected beam angles to be optimized ultrasonically by orienting or focusing them perpendicular to the predicted discontinuities.
Source :- https://www.ndts.co.in/weld-inspection-by-advance-ultrasonic-paut-tofd/
Eddy Current Testing (ECT) works on the principle of electromagnetic induction. In ECT a probe is excited with sinusoidal alternating current to induce eddy current in an electrically conducting material such as stainless steel, aluminium etc. The change in coil impedance that arises due to distortion at regions of discontinuities and associated magnetic flux leakage is measured. This is a surface technique and can readily detect very shallow surface defect and sub-surface defects. ECT is a simple, high-speed, high sensitive, versatile and reliable NDT technique and is popularly used in many engineering industries.
Remote Field Testing (RFT) is one of the several electromagnetic testing methods commonly employed in the field of non-destructive testing. RFT may also referred to as RFEC (Remote Field Eddy Current) or RFET (Remote Field Electromagnetic Technique). RFT is primarily used to inspect ferromagnetic tubing since conventional ECT have difficulty in inspecting the full thickness of the tube wall due to the strong skin effect in ferromagnetic materials.
Near Field Testing (NFT) technology is a rapid and cost-effective solution intended specifically for fin-fan carbon-steel tubing inspection. This technology relies on a simple driver-pickup eddy current probe design providing very simple signal analysis. NFT is specifically suited to the detection of internal corrosion, erosion or pitting in carbon steel tubing. The NFT probes measure lift-off or ‘fill factor’ and convert it to amplitude-based signals. Because eddy-current penetration is limited to the inner surface of the tube, NFT probes are not affected by the fin geometry on the outside of the tube.
The conventional ECT faces major limitations with respect to detection & sizing of circumferential cracking and extent of volumetric flaws in tubular. Rotating probes is a solution but it reduces the inspection speed. Therefore Eddy Current Array (ECA) along with bobbin probe technology is the solution to perform high speed inspection in a single pass.
Magnetic Flux Leakage (MFL) uses a powerful magnets to magnetize the conductive material under test where a magnetic field is created around defects like corrosion or material loss. The magnetic field induced in the part saturates it until it can no longer hold any more flux. The flux overflows and leaks out of the pipe wall and strategically placed sensors can accurately measure the three-dimensional vector of the leakage field. Because magnetic flux leakage is a vector and that a sensor can only measure one direction, any given probe must have three sensors to accurately measure the axial, radial, and circumferential components of an MFL signal.
Internal Rotary Inspection System (IRIS) is an ultrasonic method for testing of pipes and tubes. The ultrasonic beam allows detection of metal loss from the inside and outside of the tube wall. It is a fairly sensitive technique. The sensitivity achieved will depend on tube dimensions and tube cleanliness. Both ferromagnetic and non-ferromagnetic tubes can be inspected. A three dimensional picture of the defect is obtained, thus the defect profile and its depth is provided. Interpretation of results is easier than in the other techniques
Source:- https://www.ndts.co.in/tube-inspection-by-ect-reft-nft-eca-mfl-iris/
Thickness measurement at elevated temperature is a special category. Standard transducers are not designed to withstand elevated temperatures and will get damaged/destroyed due to varying thermal expansion coefficients of the materials used to construct them. Variation in material temperature affects sound velocity and accuracy of thickness measurements. We use Electro Magnetic Acoustic Transducer (EMAT) equipment without couplant to accompany this task.
Source:- https://www.ndts.co.in/in-service-high-temperature-up-to-600%E2%81%B0c-thickness-measurement-by-emat/
We offer this service using temate TG-IS (B) which is a redesigned FST-GAGE or Fast Scanning Thickness Gage, first introduced in 1994. FST-GAGE was developed by Electric Power Research Institute (EPRI) and Babcock & Wilcox (B&W) specifically to scan boiler tubes and provide a continuous measurement of tube wall thickness.
The system works on Electro Magnetic Acoustic Transducer (EMAT) technique providing accurate thickness (with accuracy of +/- 0.127mm) readings with none or minimal tube surface preparation. The probe with integrated encoder and light indicators (for fast visual alert to the operator) is manually scanned along the boiler tube while the system records the thickness & alarms if the tube is below a pre-programmed threshold or other defect conditions are triggered. The system saves a complete record of each tube & the whole boiler for later post analysis & tracking.
Apart from detecting wall loss the system is capable of detecting hydrogen damage, pitting & caustic gouging (by measuring signal attenuation) which is not detected with conventional means. It works on carbon steel and clad tubes. Tube thickness ranges from 3.8mm to 12.7mm & the minimum tube diameter requirement is 22.2mm, the tube surface can be oxidized, rough or pitted (scale-free). The technique permits 100% inspection of the boiler instead of spot checking at up to 15cm/s of scanning speed. The boiler mapping tool permits easy visualization of boiler walls with results of inspection for fast analysis and interpretation.
Source:- https://www.ndts.co.in/boiler-water-wall-tube-inspection-by-emat/
We offer ultrasonic pigging (by using In-line inspection tool EasyPig™ UT) and MFL Pigging (by using In-line inspection tool EasyPig TM) services for small diameter (4”, 6” & 8”) field pipelines with the help of M/s. Intron VTD, Russia
Source:- https://www.ndts.co.in/corrosion-mapping-defect-detection-of-field-pipelines-4-6-8-by-intelligent-pigging/
RVI(boroscopy/Videoscopy) is used to visually inspect plant components for surface defects, general condition, degradation, blockages & foreign materials. It can be used as standalone inspection or as a complement to other NDE techniques, such as eddy current, ultrasonic or x-ray, in order to qualify unclear signals or pinpoint where a more thorough inspection is needed.
We offer a turnkey inspection solutions, whether it is inspecting high energy piping, performing a loose part retrieval or diagnosing an operational problem, we bring the right equipment to visually inspect (or retrieve) it, record it, and report it back to you.
Remote Visual Inspection (RVI) of large surface areas requires an industrial Pan, Tilt, and Zoom (PTZ) camera. The PTZ camera requires openings of 5-inches or more. It can also be submerged underwater up to 100-feet. The auxiliary lamp module provides extra lighting for extremely dark inspection environments.
We use steerable crawler to inspect pipes ranging from 8” to 48”. These crawlers are well suited for carrying out inspections on pipe systems, especially those that have a lot of bends and pipe branches. The remote pendant easily steers the crawler around multiple elbows & solid obstructions and controls the crawler’s focus, lighting, speed and pan & tilt functions. This is the most common inspection technique to inspect sewer, drain, water, electrical conduit and process lines in various industries.
Source:- https://www.ndts.co.in/remote-visual-inspection-rvi-by-specialized-cameras/
Large number of ferrous steel wire ropes is in use in different industries. Premature discard and replacement with the new rope involves in unreasonable costs, while operating the rope, which already reached discard criteria, is dangerous. Visual inspection is obvious, but only visual examination is not sufficient due to specific rope design. Non-destructive magnetic inspection of ropes enables to gather comprehensive data for making reasoned decision. Magnetic flux leakage (MFL) equipment with strong magnetization can inspect ropes reliably, and smart software facilitates data interpretation.
Our rope inspection services comprise inspection of the new ropes either during production run or delivered to the customer, and on-site inspection onshore, offshore, above ground and underground. Inspection is carried in accordance with national / international standards and norms. This enables large cost savings as wire ropes can be used safely for a longer period of time.
Source:-https://www.ndts.co.in/wire-rope-testing-by-magnetic-flux-leakage/
PEC is an advance electromagnetic inspection technology which majorly detect remaining wall thickness under insulation in ferrous material. It uses square pulse signal to induced eddy current which can penetrate more deeply in magnetic material than conventional Eddy Currents. PEC can measure thickness through all insulation materials, coatings, fixed chicken wire, concrete, re-bars, corrosion product, stainless steel sheeting, aluminium sheeting, water marine growth, blistering scabs, through metallic mesh.
Source:-https://www.ndts.co.in/corrosion-under-insulation-by-pulsed-eddy-current-pec/
We have experience in planning, managing and carrying out PAUT & TOFD Services. We advise and develop PAUT & TOFD procedures and have specialist scanning equipment for carrying out inspections. We also provide PAUT & TOFD inspection simultaneously which increases the probability of defect detection and measurement of length and height of the defect to a high precision. This helps in detecting and discriminating the fatigue cracks which leads to catastrophic failures.
PAUT is an advanced method of ultrasonic testing. Instead of a single element and beam, phased array uses multiple ultrasonic elements and electronic time delays to create beams by constructive and destructive interference. PAUT offers significant technical advantages for weld testing over conventional ultrasonic as the phased array beams can be steered, scanned, swept and focused electronically from a fixed probe position. Beam steering permits the selected beam angles to be optimized ultrasonically by orienting or focusing them perpendicular to the predicted discontinuities.
Source :- https://www.ndts.co.in/weld-inspection-by-advance-ultrasonic-paut-tofd/
Eddy Current Testing (ECT) works on the principle of electromagnetic induction. In ECT a probe is excited with sinusoidal alternating current to induce eddy current in an electrically conducting material such as stainless steel, aluminium etc. The change in coil impedance that arises due to distortion at regions of discontinuities and associated magnetic flux leakage is measured. This is a surface technique and can readily detect very shallow surface defect and sub-surface defects. ECT is a simple, high-speed, high sensitive, versatile and reliable NDT technique and is popularly used in many engineering industries.
Remote Field Testing (RFT) is one of the several electromagnetic testing methods commonly employed in the field of non-destructive testing. RFT may also referred to as RFEC (Remote Field Eddy Current) or RFET (Remote Field Electromagnetic Technique). RFT is primarily used to inspect ferromagnetic tubing since conventional ECT have difficulty in inspecting the full thickness of the tube wall due to the strong skin effect in ferromagnetic materials.
Near Field Testing (NFT) technology is a rapid and cost-effective solution intended specifically for fin-fan carbon-steel tubing inspection. This technology relies on a simple driver-pickup eddy current probe design providing very simple signal analysis. NFT is specifically suited to the detection of internal corrosion, erosion or pitting in carbon steel tubing. The NFT probes measure lift-off or ‘fill factor’ and convert it to amplitude-based signals. Because eddy-current penetration is limited to the inner surface of the tube, NFT probes are not affected by the fin geometry on the outside of the tube.
The conventional ECT faces major limitations with respect to detection & sizing of circumferential cracking and extent of volumetric flaws in tubular. Rotating probes is a solution but it reduces the inspection speed. Therefore Eddy Current Array (ECA) along with bobbin probe technology is the solution to perform high speed inspection in a single pass.
Magnetic Flux Leakage (MFL) uses a powerful magnets to magnetize the conductive material under test where a magnetic field is created around defects like corrosion or material loss. The magnetic field induced in the part saturates it until it can no longer hold any more flux. The flux overflows and leaks out of the pipe wall and strategically placed sensors can accurately measure the three-dimensional vector of the leakage field. Because magnetic flux leakage is a vector and that a sensor can only measure one direction, any given probe must have three sensors to accurately measure the axial, radial, and circumferential components of an MFL signal.
Internal Rotary Inspection System (IRIS) is an ultrasonic method for testing of pipes and tubes. The ultrasonic beam allows detection of metal loss from the inside and outside of the tube wall. It is a fairly sensitive technique. The sensitivity achieved will depend on tube dimensions and tube cleanliness. Both ferromagnetic and non-ferromagnetic tubes can be inspected. A three dimensional picture of the defect is obtained, thus the defect profile and its depth is provided. Interpretation of results is easier than in the other techniques
Source:- https://www.ndts.co.in/tube-inspection-by-ect-reft-nft-eca-mfl-iris/
Thickness measurement at elevated temperature is a special category. Standard transducers are not designed to withstand elevated temperatures and will get damaged/destroyed due to varying thermal expansion coefficients of the materials used to construct them. Variation in material temperature affects sound velocity and accuracy of thickness measurements. We use Electro Magnetic Acoustic Transducer (EMAT) equipment without couplant to accompany this task.
Source:- https://www.ndts.co.in/in-service-high-temperature-up-to-600%E2%81%B0c-thickness-measurement-by-emat/
We offer this service using temate TG-IS (B) which is a redesigned FST-GAGE or Fast Scanning Thickness Gage, first introduced in 1994. FST-GAGE was developed by Electric Power Research Institute (EPRI) and Babcock & Wilcox (B&W) specifically to scan boiler tubes and provide a continuous measurement of tube wall thickness.
The system works on Electro Magnetic Acoustic Transducer (EMAT) technique providing accurate thickness (with accuracy of +/- 0.127mm) readings with none or minimal tube surface preparation. The probe with integrated encoder and light indicators (for fast visual alert to the operator) is manually scanned along the boiler tube while the system records the thickness & alarms if the tube is below a pre-programmed threshold or other defect conditions are triggered. The system saves a complete record of each tube & the whole boiler for later post analysis & tracking.
Apart from detecting wall loss the system is capable of detecting hydrogen damage, pitting & caustic gouging (by measuring signal attenuation) which is not detected with conventional means. It works on carbon steel and clad tubes. Tube thickness ranges from 3.8mm to 12.7mm & the minimum tube diameter requirement is 22.2mm, the tube surface can be oxidized, rough or pitted (scale-free). The technique permits 100% inspection of the boiler instead of spot checking at up to 15cm/s of scanning speed. The boiler mapping tool permits easy visualization of boiler walls with results of inspection for fast analysis and interpretation.
Source:- https://www.ndts.co.in/boiler-water-wall-tube-inspection-by-emat/
Mr. Mukesh Arora
Managing Director & CEO
Mrs. Shilpa Arora
Director
Mr. Pratik Chinchmalatpure
Business Leader
Mr. Swanand Hatimkar
Engg. - Business Development & Marketing
Mr Mukesh Arora
Managing Director & CEO
Mrs Shilpa Arora
Director
Mr Pratik Chinchmalatpure
Business Leader
Mr Swanand Hatimkar
Engg. - Business Development & Marketing
Mr Mukesh Arora
Managing Director & CEO
Mrs Shilpa Arora
Director
Mr Pratik Chinchmalatpure
Business Leader
Mr Swanand Hatimkar
Engg. - Business Development & Marketing
Mr Mukesh Arora
Managing Director & CEO
Mrs Shilpa Arora
Director
Mr Pratik Chinchmalatpure
Business Leader
Mr Swanand Hatimkar
Engg. - Business Development & Marketing
*Energy Dais does not guarantee the correctness of the information provided.
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