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aayushi1806 · 1 year

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What Are The Different Types Of NDT Methods?

There are more than one NDT methods. Non-destructive testing or NDT is an analysis and testing-based technique that is used by industry for evaluating the properties of a component, structure, material, or system for welding defects or characteristic differences and discontinuities without causing any damage to its original part. NDT is also called Non-destructive Inspection (NDI), Non-destructive Evaluation (NDE) or Non-destructive Examination (NDE).

Different Types of NDT Testing Methods

The current NDT testing methods include the following.

1. Acoustic Emission Testing (AE)

Acoustic Emission Testing is a type of passive NDT technique that depends on detecting the short bursts of the ultrasound waves that are emitted from the active cracks under a load. The sensors that are dispersed over the structural surface detect AE. AE can also be detected with the help of ultrasonic flaw detectors from plasticization in stressed surfaces before the crack forms.

2. Electromagnetic Testing (ET)

The method of Electromagnetic Testing makes use of a magnetic field or an electric current that is passed through a conductive part. There are three different kinds of Electromagnetic Testing that include Eddy Current Testing, Remote Field Testing (RFT), and Alternating Current Field Measurement (ACFM).

3. Ground Penetrating Radar (GPR)

Ground Penetrating Radar is a geophysical NDT method that uses an ultrasonic flaw detector machine to send radar pulses through the material’s surface. The waves either get reflected or refracted when they come across a material boundary or a buried object having different electromagnetic properties.

4. Laser Testing Methods (LM)

The Laser Testing Method is divided into three categories that include laser profilometry, holographic testing and laser shearography.

Laser profilometry makes use of a high-speed rotating laser light source along with miniature optics for detecting pitting, cracks, corrosion and erosion when it detects the changes in the surface through a 3D image generation via surface topography.

Holographic testing incorporates a laser for detecting the changes in the surface of the material that is subjected to pressure, vibration or heat.

Laser shearography uses laser light for making the image even before the surface is subjected to stress and creates a new image.

5. Magnetic Flux Leakage (MFL)

The method of Magnetic Flux Leakage makes use of a powerful magnet for creating magnetic fields that saturate the structure of steel such as storage tanks and pipelines. A sensor is used for detecting the changes in the magnetic flux density that shows any kind of reduction due to erosion, corrosion or pitting.

6. Magnetic Particle Testing (MT)

The Magnetic Particle Testing method uses magnetic fields for finding the discontinuities near or at the surface of the ferromagnetic materials. This magnetic field is generated either through a permanent magnet or an electromagnet.

The magnetic field shows any sorts of discontinuities as the magnetic flux lines show leakage that can be seen easily via magnetic particles that are drawn towards the discontinuities.

7. Neutron Radiographic Testing (NR)

Neutron Radiography NDT technique makes use of low beam energy neutrons for penetrating the workpiece. While the beam remains transparent in the metallic materials, most of the organic materials allow this beam to be visible. This helps the internal and structural components to be examined and viewed for detecting flaws.

8. Radiographic Testing (RT)

The technique of Radiographic Testing incorporates radiations that are passed through the test piece for detecting the defects. X-rays are generally used for less dense or thin materials whereas gamma rays are used for denser or thicker objects. The results are then processed by using computed radiography, film radiography, digital radiography, or computed tomography. Whatever method is used, the radiations would show discontinuities in the material because of the higher strength of the radiations.

9. Ultrasonic Testing (UT)

The method of Ultrasonic Testing transmits high-frequency sound into an object for interacting with the features present within the material that attenuate or reflect it by using ultrasonic crack detection. The method of Ultrasonic Testing is broadly classified into Through Transmission (TT), Time of Flight Diffraction (ToFD) and Pulse-Echo (PE).

Choosing the right NDT method is crucial to optimize the performance of the NDT inspection. Since there are so many different kinds of techniques and ultrasonic flaw detectors with each having its distinct characteristics, some are perfectly suited for certain applications while they can be ineffective in the rest of the cases.

Modsonic, specializing in the area of Portable Ultrasonic Flaw Detector, features EINSTEIN-II DGS, an ultrasonic flaw detector that helps in evaluating the flaw size effectively with its built-in DGS/AVG curves and Time Controlled Gain.

Modsonic has also come up with the New Arjun Series Ultrasonic Flaw Detectors that have three different models, Arjun10, Arjun 20 and Arjun 30.

Out of all, Arjun30 is the most advanced ultrasonic flaw detector machine that brings in revolutionary changes in the field of conventional flaw detection through its recordability as well as offline analysis, which wasn’t available in the past.

Despite its smaller size and less weight, the functions and features of Arjun30 meet all the requirements of modern conventional ultrasonic testing.

Arjun30 = Features of Arjun10 + Features of Arjun20 + Recordability and Offline Analysis

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atozndttrainingacademy · 1 year

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The Top NDT Training Courses You Need To Know About

Non-Destructive Testing (NDT) plays a vital role in ensuring the quality, safety, and reliability of various materials and components in industries such as aerospace, automotive, manufacturing, and construction. NDT involves the use of advanced techniques and methodologies to inspect, test, and evaluate materials and structures without causing any damage.

To become a proficient NDT professional, it is crucial to undergo comprehensive training that covers the principles, techniques, and practices of various NDT methods. In this blog, we will explore the top NDT training courses that individuals aspiring to enter the field or enhance their skills should know about.

1. Ultrasonic Testing (UT) Courses

Ultrasonic Testing (UT) is a widely used NDT method that utilizes high-frequency sound waves to detect flaws, measure material thickness, and analyze material properties. UT training courses typically cover topics such as ultrasound theory, equipment operation, calibration, and interpretation of test results. Advanced courses may delve into specialized applications such as phased array ultrasonics and time-of-flight diffraction.

2. Magnetic Particle Testing (MT) Courses

Magnetic Particle Testing (MT) is a method that uses magnetic fields and magnetic particles to locate surface and near-surface defects in ferromagnetic materials. MT training courses focus on teaching participants the principles of magnetism, magnetization techniques, particle application, and interpretation of indications. Courses may also cover advanced techniques like remote field testing and magnetic flux leakage.

3. Liquid Penetrant Testing (PT) Courses

Liquid Penetrant Testing (PT) is an NDT technique used to detect surface-breaking defects in non-porous materials. PT training courses educate participants about different penetrant types, application methods, dwell times, and evaluation of results. Advanced PT courses may include topics such as fluorescent penetrant inspection and dual-sensitivity testing.

4. Radiographic Testing (RT) Courses

Radiographic Testing (RT) employs X-rays or gamma rays to examine the internal structure of materials and detect defects such as cracks, porosity, and inclusions. RT training courses provide comprehensive knowledge about radiation safety, exposure techniques, image interpretation, and film analysis. With the advancement of digital radiography, courses on computed radiography (CR) and digital radiography (DR) have also gained significance.

5. Visual Testing (VT) Courses

Visual Testing (VT) is one of the most fundamental NDT methods and involves a thorough visual examination of materials and structures. VT training courses equip individuals with essential skills in visual inspection techniques, defect recognition, and documentation. Courses may also cover specialized areas such as remote visual inspection (RVI) using borescopes or drones.

6. Eddy Current Testing (ECT) Courses

Eddy Current Testing (ECT) is an electromagnetic technique used to detect surface and subsurface defects, measure conductivity, and sort materials based on their properties. ECT training courses cover topics such as coil design, test parameters, signal analysis, and applications in various industries. Advanced courses may include topics like array probes and pulsed eddy current testing.

7. Welding Inspection Courses

Welding Inspection training is focused on equipping individuals with the skills necessary to evaluate the quality and integrity of welds. These courses cover welding processes, welding symbols and codes, weld defects and discontinuities, visual inspection techniques, and non-destructive testing methods specific to weld inspection, such as ultrasonic testing and radiographic testing.

8. Quality Assurance/Quality Control (QA/QC)

Quality Assurance (QA) and Quality Control (QC) are essential components of any industry or project where quality is of utmost importance. QA/QC ensures that products, services, and processes meet established standards, regulations, and customer expectations. While closely related, QA and QC have distinct roles within an organization.

Quality Assurance involves establishing and implementing processes, procedures, and systems to prevent defects or quality issues from occurring in the first place. It focuses on proactively designing and managing quality throughout the entire project or product lifecycle. QA activities include developing quality plans, conducting audits, implementing quality management systems, and defining quality standards and specifications.

9. Civil NDT (Non-Destructive Testing in Civil Engineering)

Non-Destructive Testing (NDT) techniques find extensive application in the field of civil engineering to assess the condition and integrity of structures such as bridges, buildings, dams, and pipelines. Civil NDT involves the use of various NDT methods to identify defects, assess material properties, and evaluate structural health without causing any damage to the structure.

Civil NDT techniques play a crucial role in ensuring the safety, reliability, and maintenance of civil infrastructure. These techniques help detect defects such as cracks, voids, corrosion, or delamination, which may compromise the structural integrity or durability of the infrastructure.

10. Online NDT Course

Online NDT courses provide individuals with the flexibility to learn and acquire NDT knowledge and skills remotely. These courses leverage technology and e-learning platforms to deliver comprehensive training modules, interactive lessons, and practical exercises to participants.

Online NDT courses cover a wide range of topics, depending on the specific method or technique being taught. The courses typically include video lectures, simulations, case studies, quizzes, and assessments to ensure a well-rounded learning experience. Additionally, many online NDT courses offer practical demonstrations or virtual laboratory sessions to provide hands-on training.

Conclusion

The field of Non-Destructive Testing (NDT) offers a diverse range of training courses that are crucial for individuals aspiring to become NDT professionals or enhance their existing skills. The top NDT training courses in Delhi NCR covered in this blog provide a solid foundation and comprehensive knowledge of various NDT methods, enabling individuals to perform accurate inspections, evaluate material integrity, and ensure safety across different industries.

With a focus on quality and reliability, A TO Z NDT Training Academy stands out as a reputable company providing comprehensive NDT training. Their expertise and commitment to delivering high-quality education make them an excellent choice for individuals seeking professional development in the NDT field. Whether it's Ultrasonic Testing, Magnetic Particle Testing, Radiographic Testing, or any other NDT method, A TO Z NDT Training Academy in Delhi NCR offers courses that cover the principles, techniques, and practices required for success in the industry.

#ndttraining #ndtcourse #ndttrainingindelhincr #atozndttrainingacademy

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modsonicultrasonic · 1 year

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What Are The Different Types Of NDT Methods?

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May102021

Different Types of NDT Testing Methods

The current NDT testing methods include the following.

1. Acoustic Emission Testing (AE)

2. Electromagnetic Testing (ET)

3. Ground Penetrating Radar (GPR)

4. Laser Testing Methods (LM)

The Laser Testing Method is divided into three categories that include laser profilometry, holographic testing and laser shearography.

Holographic testing incorporates a laser for detecting the changes in the surface of the material that is subjected to pressure, vibration or heat.

Laser shearography uses laser light for making the image even before the surface is subjected to stress and creates a new image.

5. Magnetic Flux Leakage (MFL)

6. Magnetic Particle Testing (MT)

The magnetic field shows any sorts of discontinuities as the magnetic flux lines show leakage that can be seen easily via magnetic particles that are drawn towards the discontinuities.

7. Neutron Radiographic Testing (NR)

8. Radiographic Testing (RT)

9. Ultrasonic Testing (UT)

Modsonic has also come up with the New Arjun Series Ultrasonic Flaw Detectors that have three different models, Arjun10, Arjun 20 and Arjun 30.

Despite its smaller size and less weight, the functions and features of Arjun30 meet all the requirements of modern conventional ultrasonic testing.

Arjun30 = Features of Arjun10 + Features of Arjun20 + Recordability and Offline Analysis

#ultrasound #ultrasonic testing #ultrasonic thickness gauges #ultrascans #ultrasonic flaw detector #ultrasonic #ultrasonic flaw detectors

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ka43270 · 3 years

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Non-destructive Testing Services and Equipment Market Industry Demands, Size & Share, Covid-19 Impact Analysis, Recent Developments, Global Growth, Trends, Top Operating Vendors and Forecast to 2026

Market Analysis and Insight: Global Non-destructive Testing Services and Equipment Market

Non-destructive Testing Services and Equipment Market By Technique (Ultrasonic Testing (UT), Visual Testing, Magnetic Particle Testing (MPT), Liquid Penetrant Testing (LPT), Eddy Current Testing (ECT), Radiographic Testing (RT), Acoustic Emission Testing (AET)); By Method (Visual Inspection, Surface Inspection, Volumetric Inspection) By Service (Inspection Services, Equipment Rental Services, Calibration Services, Training Services), By Vertical (Manufacturing, Oil & Gas, Aerospace & Defense, Public Infrastructure, Automotive, Power Generation), By Geography (North America, South America, Europe, Asia-Pacific, Middle East and Africa) – Industry Trends & Forecast to 2026

Global nondestructive testing services and equipment market is expected to register a healthy CAGR in the forecast period 2018 to 2025. The new market report contains data for historic year 2016, the base year of calculation is 2017 and the forecast period is 2018 to 2025.

Remote visual inspection in aerospace increases demand, stringent safety guidelines and government protocols, automated NDT devices expected to see most demand, the power industry is boomed by continuous investment in nuclear plants and outsourcing of non-core activities and technical resource constraints driving the market. On the other hand, lack of skilled equipment operators and high cost of NDT equipment slowing down acceptance is hampering the growth of market.

Get a Sample Copy of report @ https://www.databridgemarketresearch.com/reports/global-nondestructive-testing-services-and-equipment-market

Segmentation: Global Non-destructive Testing Services and Equipment Market

On the basis of type, the global Non-destructive testing services and equipment market is segmented into services and equipment. Services are further sub segmented into inspection, consulting, training and others. Equipment are further sub segmented into ultrasonic test equipment, radiography test equipment, visual inspection equipment, magnetic particle test equipment, penetrant test equipment, eddy current testing equipment, acoustic emission testing equipment and others. In 2018, services market segment is valued to rule with the highest market share 2025.

On the basis of mode of testing, the global nondestructive testing services and equipment market is segmented into surface testing, volumetric testing, condition monitoring and integrity inspection. In 2018, surface testing segment is valued to rule with the highest market share 2025.

Get Detailed Table of Contents @ https://www.databridgemarketresearch.com/toc/?dbmr=global-nondestructive-testing-services-and-equipment-market

On the basis of application, the global nondestructive testing services and equipment market is classified into flaw detection, leak detection, dimensional measurement, physical analysis, chemical analysis, plasma emission testing, corrosion emission testing, and others. Among these, in 2018 physical analysis dominated the market and the trend is expected to remain the same till 2025.

On the basis of industry, the global nondestructive testing services and equipment market is classified into automotive, oil and gas, energy and power, aerospace and defence and others. Among these, in 2018 oil and gas dominated the market and the trend is expected to remain the same till 2025. Among these, in 2018 oil and gas dominated the market and the trend is expected to remain the same till 2025.

For More Information or Query or Looking for Customization, Visit @ https://www.databridgemarketresearch.com/inquire-before-buying/?dbmr=global-nondestructive-testing-services-and-equipment-market

Based on geography, the market is segmented into 5 geographical regions

North America

Europe

Asia-Pacific

South America and

Middle East & Africa

Key Drivers:

Prominent factors driving the growth of this market consist of remote visual inspection in aerospace increases demand, stringent safety guidelines and government protocols, automated NDT devices expected to see most demand, the power industry is boomed by continuous investment in nuclear plants and outsourcing of non-core activities and technical resource constraints driving the market.

Key Points:

General Electric is going to dominate the nondestructive testing services and equipment market following with Olympus Corporation, MISTRAS Group, Inc, Pfinder KG, Intertek Group plc, Nikon Metrology NV, Ashtead Technology, Sonatest, Bosello High Technology srl among others.

Surface testing segment is expected to grow with the highest CAGR of 8.3% in the forecast period 2018 to 2025.

Browse more related report to know about market analysis

3D Scanner Market

Artificial Intelligence in Aviation Market

Automotive TIC Market

Bluetooth LED bulb Market

Connected Car Market

About Data Bridge Market Research:

Data Bridge Market Research set forth itself as an unconventional and neoteric Market research and consulting firm with unparalleled level of resilience and integrated approaches. We are determined to unearth the best market opportunities and foster efficient information for your business to thrive in the market

Contact: Data Bridge Market Research

Tel: +1-888-387-2818

Email: [email protected]

#Non-destructive Testing Services and Equipment Market

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blogbepeterson · 4 years

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Top 10 Pressure Vessel Inspection and Testing Methods Discussed

Pressure vessels are widely used in various industries for storing gases or liquids at different pressures. At times, these pressures may increase due to atmospheric factors or other unforeseen factors. They may harm the property and people. To avoid this, most pressure vessels developed for industrial applications are designed to the American Society of Mechanical Engineers (ASME) standards. In earlier days, the pressure vessels exploded due to overpressure. As a result ASME standards were formed. Today, the design, manufacturing, testing, and inspection of pressure vessels is governed by ASME Boiler and Pressure Vessel Code (BPVC). Thus, manufacturers need to be aware of these standards. Does that mean all pressure vessels are built in adherence to ASME BPVC? No, there are non-ASME pressure vessels, too. Although some manufacturing techniques may be similar, these pressure vessels may not be inspected or tested as per ASME BPVC codes. This post gives you an overview of ASME inspection and testing techniques employed by manufacturers to ensure the safety of pressure vessels.

Know About Different Types of ASME Pressure Vessel Testing and Inspection

Pressure vessels must be strong enough to maintain their pressure and structural integrity in challenging conditions. Today, various types of testing is conducted to check the leaks and performance of pressure vessels under different conditions. During these tests, the pressure vessels are subjected to real challenges, which they are intended to overcome to pass off as a quality product. The following are a few popular pressure vessel testing methods.

· Hydrostatic Testing: As the name indicates, this type of testing involves water. The pressure vessel is filled with water, pressurized nearly one and half times its limit, and checked for leakage. This type of testing is performed on boilers, pipelines, or fuel tanks to check their integrity.

· Pneumatic Testing: This type of testing is performed using non-toxic gases. The gases like nitrogen or air are chosen for testing as they do not explode or cause much harm in case of accidents. When compared to hydrostatic testing, pneumatic testing is sparingly used due to the challenges involved. If in any case the pressure vessel fractures during the testing, it may lead to dangerous consequences. This testing is only used in situations when pressure vessels cannot be filled with water.

In addition to these, the following non-destructive testing techniques are also performed to check the surface defects and internal defects on the pressure vessels.

1. Visual Testing (VT): This is the most basic testing conducted by experts on pressure vessels. They examine the pressure vessels with naked eyes examining the material, checking for visible leaks or other imperfections on the surface of the pressure vessel. Apart from leaking, corrosion, erosion, and cracking are checked for. Inspectors may use flashlights to check the interiors of the pressure vessel. Nowadays, remote visual inspection (RVI) is gaining priority. Drones or robots are also being used for visual inspection.

2. Ultrasonic Testing (UT): This is another non-destructive testing method that uses sound waves to check the integrity of a pressure vessel. High-frequency sound waves are made to pass through the pressure vessel to check for any changes in the material property. Echoes or sound reflections help inspectors understand the imperfections on the surface. One of the major drawbacks of this testing is that it needs to be performed in real time and does not produce any lasting records.

3. Radiography NDT (RT): This type of non-destructive testing uses X-rays or gamma rays to detect flaws in pressure vessels. RT is a volumetric technique, which can detect issues within the pressure vessel. In this technique, the X-ray generator produces radiation that is directed to the pressure vessel being tested and the reflection is observed on a detector. The readings on the detector produce a shadowgraph, which enables inspectors to identify the imperfections of the pressure vessel. Today, RT is being increasingly used because it enables experts to uncover the imperfections that are otherwise not visible to the naked eye. This may include slight or major density alternations at places.

4. Eddy Current NDT (ET): As the name indicates, this type of testing utilizes eddy current in the magnetic field of a conductive material to identify defects in the material. It is one of the key types of electromagnetic testing techniques performed by inspectors.

5. Magnetic Particle NDT (MT): In this testing, the magnetic current is passed through the pressure vessel to identify imperfections on the surface. In case of any imperfections, there may be an interruption in the flow of the current. This interruption creates a flux leakage field. The flux leakage fields usually become visible when ferromagnetic particles are spread on the pressure vessel.

6. Acoustic Emission NDT (AE): In this testing, acoustic emissions are used to determine possible imperfections in a pressure vessel. The intensity, arrival time, and location of these emissions are checked to understand the defects.

7. Liquid Penetrant NDT (PT): In this type of testing, a thin liquid or penetrant is spread over the material surface. The penetrant comprises a fluorescent dye, which deeply penetrates into defects or imperfect surfaces. Then a developer is used to draw the solution on defects and ultraviolet radiations highlight the defects.

8. Leak Testing (LT): Going by its name, this testing is performed to check the leaks in pressure vessels. Leak testing is performed using a pressure gauge, electronic listening devices, and soap bubble tests.

In addition to these tests, inspection is performed on pressure vessels. The inspection can be conducted in two ways:

· Internal Inspection: To perform this inspection, the pressure vessel is emptied and taken down from operation. This inspection is usually conducted to identify leaks, corrosion, or other imperfections on the surface of pressure vessels.

· External Inspection: This inspection is usually performed to check the outer condition of the pressure vessel. External inspection can be performed anytime, and for this, the pressure vessel need not be removed from operation. During this inspection, the inspector mainly checks for defects near the external components like vessel connections, inlet piping, outlet piping, and so on. The vessel is also checked for any defects such as leakage of gas, liquid, or vapor. The vessel mountings are inspected to see if they allow any expansion and contraction. In addition to this, nuts, bolts, and other accessories are checked for rusting and corrosion.

Top 4 Benefits of Pressure Vessel Testing and Inspection

Pressure vessel testing and inspection are important for various reasons apart from safety. The following are a few key reasons for the same.

1. Minimal Downtimes: Removing pressure vessels from service is not an easy task. This may require several adjustments and additional investments. This would mean long downtimes. By ensuring proper testing and inspection, users can easily minimize the situations of these downtimes.

2. Money Saving: Pressure vessels are one of the important investments in environments, where they are used to store various toxic gases and liquids. Repairing these pressure vessels may not be easy and they need to be removed from operation for repairs. The repairs may sometimes take weeks to complete, which would add to operational costs. Regular testing and inspection will avoid business users to reduce the instances of big repairs.

3. Accuracy: Most non-destructive testing methods covered in this post are proven to assure accurate and effective results. Both these qualities are helpful when it comes to ensuring the quality, safety, and longevity of pressure vessels and people.

4. Efficiency and Quick Turnaround Times: The testing methods are performed using advanced equipment, which assures immediate results. This helps reduce waiting times and ensures the performance and safety of the workplace.

As long as you understand the importance of safety in your facility you will understand the importance of sourcing your ASME pressure vessels from trusted manufacturers too. Once you find an experienced ASME certified manufacturer, ensure to check on their experience. To get it right, always conduct multiple discussion sessions with the experts at the company. Also, check on different procedures that they follow during the manufacturing, inspection, and testing stages. After all, a robust pressure vessel is a combined effort of a client and an expert manufacturer.

#pressurevessel #ASME Vessel

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weldingjobstoday · 4 years

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NDT Level III Inspector (Consultant)

Level 3 NDT Examiner (Consultant)

Job Summary

The Non-Destructive Testing (NDT) Level III Examiner (Consultant) will support the MAETS Quality Assurance Manager with all aspects of the welding program as well as other areas of the quality assurance (QA)/quality control (QC) program as may be required. This position will require a specific agreement/retainer for support services required.

Primary Duties and Responsibilities

On a typical, day-to-day basis (as required) the Level 3 NDT consultant will:

Provide technical advice, research, and assistance related to the oversight of welding, brazing and NDT programs

Develop new welding, brazing or NDT procedures, techniques, and calibration methods for equipment used for magnetic particle inspection, penetrant inspection and Radiography

Approve processes requiring NDT Level III authority

Conduct welder eye testing

Develop and maintain welder, NDT, and workmanship inspector training and associated records

Perform/support internal and external audits related to welding, brazing, and NDT

Develop and review welding, brazing and NDT records

Other Duties and Responsibilities

The Level 3 NDT consultant may also be required to:

Perform in-process and final inspections/testing to ensure compliance with drawings, specifications, quality standards, and all other applicable requirements for fabricated, assembled, welded or otherwise manufactured products, and purchased parts/specialty items from suppliers

Create and maintain documentation/files associated with quality control/inspection and testing results

Accept or reject material or assemblies based on conformance to design specifications or approved deviations

Evaluate, conduct, and document special processes and supplier audits (internal/external)

Conduct/support root cause analyses and corrective action

Perform quality engineering tasks including quality planning, data analysis, and process control activities

Other related activities as requested

Required Knowledge / Skills / Experience / Certifications

Level III NDT Certification with experience in at least two of the following NDT methods: Radiography (RT), Ultrasonic Testing (UT), Fluid Penetrant Inspection (FPI), Eddy Current (ET), or Magnetic Particle (MT).

Three (3) years of experience as a QA/QC inspector, craftsmen, or supervisor in the ship repair/shipyard/drydock industry

Ability to prepare and approve NDT procedures and other related NDT work instructions

Extensive knowledge of industry NDT standards (ex. NAS410, ASTM 1742, ASTM 1417, ASTM 1444, AMS-STD-2154, etc.)

Thorough knowledge of the selection and application of welding procedures and processes including SMAW, GTAW, GMAW, and SAW

Knowledge of NDT personnel training and examination standards

Fully conversant with Ship Terminology/Classification Rules/ASME/AWS codes and regulations.

Fully conversant with ASME SEC IX, AWS D1.1, ASME B 31.3 codes or other relevant craft codes or specifications

Shipyard experience and the ability to interface well with yard supervisors, managers, and customer quality assurance personnel

Ability to maintain accurate records

Ability to use tools, gauges, measuring devices, and test equipment necessary for the inspection process

Hands-on experience with the inspection of marine engine components, deck machinery (winches, cranes), pumps, valves, electrical, instrumentation or structural steel fabrication

Excellent communication skills, good command over written and spoken English, computer literate, good report writing skills.

Demonstrated proficiency with MS Office suite (Word, Excel, PowerPoint)

Desired Knowledge / Skills / Experience / Certifications Skills & Requirements

Internationally recognized NDT certifications: AWS CWI, NACE CIP, ASNT NDT Level III, etc.

Ability to verify requisite materials traceability and identification to meet ITP and contract requirements

Exposure to ISO Quality Management systems and internal audits

Exposure to Safety and Environmental Management Systems

Education Requirements

Bachelor’s degree in a relevant technical discipline plus at least five (5) years of related experience in quality/manufacturing/NDT processes (or an equivalent combination of education and experience) OR a High School Diploma or equivalent and 15 years of related experience in quality/manufacturing/NDT processes.

Other Requirements

Must be able to obtain and maintain a U.S. Security Clearance at the appropriate level and satisfy federal government requirements for access to government information

Must obtain a majority of own inspection tools

Job Types: Full-time, Part-time, Contract

Experience:

NDT (Non-destructive Testing): 5 years (Preferred)

Education:

High school or equivalent (Required)

License:

NDT Level II (Required)

Security Clearance (Preferred)

Work authorization:

Contract Renewal:

Hours per week:

Less than 10

10-19

20-29

30-39

This Job Is:

A job for which military experienced candidates are encouraged to apply

Open to applicants under 18 years old, provided it is legally allowed for the job and location

A job for which all ages, including older job seekers, are encouraged to apply

A job for which people with disabilities are encouraged to apply

Company’s website:

Work Remotely:

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kristinsimmons · 4 years

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Can AI and radiographs help in resource-poor areas in the fight against COVID-19?

Pooja Rao

Tarun Raj

Manoj TLD

Preetham Srinivas

Bhagarva Reddy

By POOJA RAO, TARUN RAJ, BHARGAVA REDDY, MANOJ TLD, and PREETHAM SRINIVAS

In March 2020, we re-purposed our chest X-ray AI tool, qXR, to detect signs of COVID-19. We validated it on a test set of 11479 CXRs with 515 PCR-confirmed COVID-19 positives. The algorithm performs at an AUC of 0.9 (95% CI : 0.88 – 0.92) on this test set. At our most common operating threshold for this version, sensitivity is 0.912 (95% CI : 0.88 – 0.93) and specificity is 0.775 (95% CI : 0.77 – 0.78). qXR for COVID-19 is used at over 28 sites across the world to triage suspected patients with COVID-19 and to monitor the progress of infection in patients admitted to hospital

The emergence of the COVID-19 pandemic has already caused a great deal of disruption around the world. Healthcare systems are overwhelmed as we speak, in the face of WHO guidance to ‘test, test, test’ [1]. Many countries are facing a severe shortage of Reverse Transcription Polymerase Chain Reaction (RT-PCR) tests. There has been a lot of debate around the role of radiology — both chest X-rays (CXRs) and chest CT scans — as an alternative or supplement to RT-PCR in triage and diagnosis. Opinions on the subject range from ‘Radiology is fundamental in this process’ [2] to ‘framing CT as pivotal for COVID-19 diagnosis is a distraction during a pandemic, and possibly dangerous’ [3].

Role of Radiography

The humble chest X-ray has emerged as the frontline screening and diagnostic tool for COVID-19 infection in a few countries and is used in conjunction with clinical history and key blood markers such as C-Reactive Protein (CRP) test and lymphopenia [4]. Ground glass opacities and consolidations which are peripheral and bilateral in nature are attributed to be the most common findings with respect to COVID related infections on CXRs and chest CTs. CXRs can help in identifying COVID-19 related infections and can be used as a triage tool in most cases. In fact, Italian and British hospitals are employing CXR as a first-line triage tool due to high RT-PCR turnaround times. A recent study [5] which examined CXRs of 64 patients found that in 9% of cases, initial RT-PCR was negative whereas CXRs showed abnormalities. All these cases subsequently tested positive for RT-PCR within 48 hours. The American college of Radiology recommends considering portable chest X-rays [6] to avoid bringing patients to radiography rooms. The Canadian Association of Radiologists suggest the use of mobile chest X-ray units for preliminary diagnosis of suspected cases [7] and to monitor critically ill patients, but have reported that no abnormalities are seen on CXRs in the initial stages of the infection.

Radiology decision tool for suspected COVID-19 – The British Society of Thoracic Imaging [8]

As of today, despite calls for opening up imaging data on COVID-19 and outstanding efforts from physicians on the front-lines, there are limited X-ray or CT datasets in the public domain pertaining specifically to COVID. These datasets remain insufficient to train an AI model for COVID-19 triage or diagnosis but are potentially useful in evaluating the model – provided the model hasn’t been trained on the same data sources.

Building and evaluating qXR for COVID-19

Over the last couple of months we have adapted our tried-and-tested chest X-ray AI tool, qXR to identify findings related to COVID-19 infections. qXR is trained using a dataset of 2.5 million chest X-rays (that included bacterial and viral pneumonia and many other chest X-ray findings) and is currently deployed in over 28 countries. qXR detects the following findings that are indicative of COVID-19: Opacities and Consolidation with bilateral and peripheral distribution and the following findings that are contra-indicative of COVID-19: hilar enlargement, discrete pulmonary nodule, calcification, cavity and pleural effusion.

These CE-marked capabilities have been leveraged for a COVID-19 triage product that is highly sensitive to COVID-19 related findings. This version of qXR gives out the likelihood of a CXR being positive for COVID-19, called Covid-19 Risk. Covid-19 Risk is computed using a post processing algorithm which combines the model outputs for the above mentioned findings. The algorithm is tuned on a set of 300 COVID-19 positives and 300 COVID-19 negatives collected from India and Europe.

Most new qXR users for COVID-19 are using it as a triage tool, often in settings with limited diagnostic resources. This version of qXR also localizes and quantifies the affected region. This capability is being used to monitor the progression of infection and to evaluate response to treatment in new clinical studies.

Sample Output of qXR [9]

Evaluation of the algorithm

We have created an independent testset of 11479 CXRs to evaluate our algorithm. The WHO [10] recommends a confirmatory diagnosis of COVID-19 using Reverse-Transcriptase Polymerase Chain Reaction (RT-PCR) – a specialised Nucleic Acid Amplification Test (NAAT) which looks for unique signatures using primers designed for the COVID-19 RNA sequence. Positives in this test set are defined as any CXR that is acquired while the patient has tested positive on RT-PCR test based on sputum/ lower respiratory and or upper respiratory aspirates/throat swab samples for COVID-19. Negatives in this test set are defined as any CXR which was acquired before the first case of COVID-19 was discovered.

The size of the negative set relative to the positive set was set to match the available prevalence in the literature [11]. The test set has 515 positives and 10964 negatives. Negatives are sampled from an independent set 250,000 CXRs. Negative set has 1609 cases of bilateral opacity and 547 cases of pulmonary consolidation in it (findings which are indicative of COVID-19 on a CXR), where the final diagnosis is not COVID-19. Negative set also has 355 non-opacity related abnormalities. This allowed us to evaluate algorithms ability to detect non COVID-19 opacities and findings, and is used to suggest alternative possible etiology and rule out COVID-19. We have used Area under Receiver Operating Characteristic Curve (AUC) along with Sensitivity and Specificity at the operating point to evaluate the performance of our algorithm.

CharacteristicValueNumber of scans11479Positives515Negatives10964Normals9000Consolidation547Opacities1609Other Abnormalities355

Test set demographics

A subset (1000 cases) of this test set was independently reviewed by radiologists to create pixel level annotations to localize opacity and consolidation. Localization and progression monitoring capability of qXR is validated by computing the Jaccard Indexbetween algorithm output and radiologist annotations.

Metrics

To detect signs of COVID-19, We have observed an AUC of 0.9 (95% CI: 0.88 – 0.92)on this test set. At the operating threshold, we have observed the sensitivity to be 0.912 (95% CI : 0.88 – 0.93) and specificity to be 0.775 (95% CI : 0.77 – 0.78). While there are no WHO guidelines yet for an imaging based triage tool for COVID, WHO recommends a minimum sensitivity and specificity of 0.9 and 0.7 for community screening tests for Tuberculosis [12], which is a deadly infectious disease in itself. We have observed a Jaccard index of 0.88 between qXR’s output and expert’s annotations.

Receiver Operating Characteristic Curve

Deploying qXR for COVID-19

qXR is available as a web-api and can be deployed within minutes. Built using our learnings of deploying globally and remotely, it can interface with a variety of PACS and RIS systems, and is very intuitive to interpret. qXR can be used to triage suspect patients in resource constrained countries to make effective use of RT-PCR test kits. qXR is being used for screening and triage at multiple hospitals in India and Mexico.

San Raffaele Hospital in Milan, Italy has deployed qXR to monitor patients and to evaluate patient’s response to treatments. In Karachi, qXR powered mobile vans are being used at multiple sites to identify potential suspects early and thus reducing burden on the healthcare system.

Timeline of qXR for COVID

In the UK, all the suspected COVID-19 patients presenting to the emergency department are undergoing blood tests and CXR [4]. This puts a tremendous amount of workload on already burdened radiologists as it becomes critical for radiologists to report the CXRs urgently. qXR, with its ability to handle huge workloads, provides significant value in such a scenario and thus reduce the burden on radiologists.

qXR can also be scaled for rapid and extensive population screening. Frontline clinicians are increasingly relying on chest X-rars to triage the sickest patients, while they await RT-PCR results. When there is high clinical suspicion for COVID-19 infection, the need for a patient with positive chest X-ray to get admitted in a hospital is conceivable. qXR can help solve this problem at scale.

Impact of qXR for COVID-19

Conclusion

With new evidence emerging every day and with COVID-19 guidance and protocols adapting responsively, the national responses vary widely across the globe. However, Singapore, Taiwan and South Korea have shown that aggressive and proactive testing plays a crucial role in containing the spread of the disease.

We believe AI has great potential for helping doctors quantify and monitor COVID progression from a patient’s chest X-rays – this will help determine treatment pathways faster and thus slow any surges in emergency cases. AI will also play a critical role in expanding screening for COVID-19 in low- resource communities, reducing the burden on healthcare systems.

References

WHO Director-General’s opening remarks at the media briefing on COVID-19 – WHO, Accessed Apr 9, 2020.

Imaging the coronavirus disease COVID-19 – Healthcare in Europe Website, Accessed Apr 9, 2020.

Hope et al. A role for CT in COVID-19? What data really tell us so far – The Lancet, Mar 27, 2020

Lessons from the frontline of the covid-19 outbreak – BMJ Blog, Accessed Apr 9, 2020.

Wong et al. Frequency and Distribution of Chest Radiographic Findings in COVID-19 Positive Patients – Radiology, Mar 27, 2020.

ACR Recommendations for the use of Chest Radiography and Computed Tomography (CT) for Suspected COVID-19 Infection – ACR, Accessed Apr 9, 2020.

Lei et al. COVID-19 Infection: Early Lessons – Canadian Association of Radiologists Journal, Mar 12, 2020.

Radiology decision tool for suspected COVID-19 – The British Society of Thoracic Imaging, Accessed Apr 9, 2020.

Cohen et al. COVID-19 image data collection – arXiv:2003.11597, 2020

Laboratory testing for 2019 novel coronavirus (2019-nCoV) in suspected human cases – WHO, Accessed Apr 9, 2020.

Verity et al. Estimates of the severity of coronavirus disease 2019: a model-based analysis – The Lancet Infectious Diseases, Mar, 2020.

High priority target product profiles for new tuberculosis diagnostics: report of a consensus meeting, tech. rep., World Health Organization, Apr 28-29, 2014.

Pooja Rao is the co-founder and head of R&D at Qure.ai. Tarun Raj, Bhargava Reddy, Manoj TLD and Preetham Srinivas are AI scientists at Qure.ai.

The post Can AI and radiographs help in resource-poor areas in the fight against COVID-19? appeared first on The Health Care Blog.

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geocontech · 3 months

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Five Most Common Testing Methods in Non-Destructive Testing (NDT) by Geo Con Tech Group

Non-destructive testing (NDT) is an examination of components or workpieces for their quality and structure without causing damage or impairment. Regulated under the international standard DIN EN ISO 9712, NDT is widely utilized in various industrial sectors such as plant engineering, mechanical engineering, steel, power plant, and vehicle construction.

Geo Con Tech Group ensures that NDT adheres to a strict certification process to prevent personal injury and property damage. This process involves the identification and evaluation of discontinuities or imperfections, as the actual determination of a defect is governed by specific testing regulations.

The 5 Most Common Non-Destructive Testing (NDT) Methods

Visual Testing (VT) is the simplest and most widely used NDT method. It involves the direct inspection of a material or component to identify surface defects. This method often employs tools like magnifying glasses, mirrors, and borescopes to enhance visibility.

Ultrasonic Testing (UT) uses high-frequency sound waves to detect internal flaws in materials. The sound waves travel through the material and reflect back from any discontinuities, providing detailed information about the integrity of the component. This method is highly effective for detecting cracks, voids, and other internal defects.

Radiography Testing (RT) utilizes X-rays or gamma rays to produce images of the internal structure of a component. The resulting radiographs reveal any hidden flaws such as cracks, voids, or inclusions. RT is widely used in industries where the internal quality of materials is critical, like aerospace and construction.

Eddy Current Testing (ET) involves inducing electrical currents (eddy currents) in a conductive material and monitoring the interaction of these currents with the material. This method is particularly useful for detecting surface and near-surface defects in metals. ET is commonly used in the inspection of aircraft components and tubing.

Magnetic Particle Testing (MT) is used to detect surface and slightly subsurface discontinuities in ferromagnetic materials. It involves magnetizing the component and applying ferrous particles, which accumulate around any flaws, making them visible under appropriate lighting. This method is widely used in industries such as automotive, railways, and welding.

Who may perform non-destructive testing?

Standard-compliant testing necessitates a certified inspector who has attained one of three proficiency levels, based on their experience and training, for the specific testing method (VT, MT, PT, UT, RT).

Level 1: Authorized to conduct test procedures and document the results.

Level 2: In addition to conducting tests, they can also interpret and evaluate the results according to relevant standards and regulations.

Level 3: Beyond conducting and evaluating tests, they are qualified to choose appropriate testing procedures, draft procedure descriptions, and oversee the entire testing facility.

Geo Con Tech Group: Leading the Way in Non-Destructive Testing (NDT) in Chennai, India

Geo Con Tech Group stands at the forefront of Non-Destructive Testing (NDT) in Chennai, India, offering unparalleled expertise and adherence to international standards. NDT is crucial in various industrial sectors, including plant engineering, mechanical engineering, steel, power plant, and vehicle construction. Geo Con Tech Group ensures that all NDT processes comply with the international standard DIN EN ISO 9712, preventing personal injury and property damage by identifying and evaluating discontinuities or imperfections in materials and components

Why Geo Con Tech Group is the Best in NDT:

Comprehensive Testing Methods: Geo Con Tech Group utilizes the five most common NDT methods—Visual Testing (VT), Ultrasonic Testing (UT), Radiography Testing (RT), Eddy Current Testing (ET), and Magnetic Particle Testing (MT). Each method is meticulously applied to detect and analyze defects without damaging the test materials, ensuring the highest quality and safety standards.

Certified Inspectors: The company's NDT inspections are performed by certified professionals who have achieved various proficiency levels (Level 1, Level 2, and Level 3). These experts are not only trained to conduct and document test procedures but also evaluate results, select appropriate testing methods, and oversee the testing facility, ensuring accuracy and reliability.

State-of-the-Art Technology: Geo Con Tech Group employs advanced tools and technologies such as magnifying glasses, mirrors, borescopes, high-frequency sound waves, X-rays, gamma rays, and ferrous particles. This ensures that every test is conducted with precision, providing detailed insights into the integrity of materials and components.

Industry-Specific Solutions: The company’s extensive experience across various industries, including aerospace, automotive, railways, and construction, allows them to tailor their NDT services to meet specific industry needs. This targeted approach ensures optimal results and compliance with industry standards and regulations.

Commitment to Safety and Quality: Geo Con Tech Group's rigorous certification process and adherence to international standards reflect their commitment to safety and quality. By thoroughly identifying and evaluating material imperfections, they help prevent potential failures, ensuring the safety and reliability of industrial components.

Geo Con Tech Group's dedication to excellence in Non-Destructive Testing makes them the top choice for industries in Chennai and beyond. Their certified inspectors, advanced technologies, and industry-specific expertise ensure that they deliver reliable and accurate NDT services, maintaining the highest standards of safety and quality.

FAQ: Non-Destructive Testing (NDT) by Geo Con Tech Group

1. What is the most common NDT method used?

The most common Non-Destructive Testing (NDT) method used is Visual Testing (VT). VT involves the direct inspection of a material or component to identify surface defects using tools like magnifying glasses, mirrors, and borescopes. It is widely used due to its simplicity and effectiveness in detecting visible imperfections.

2. Who will do NDT testing in Chennai, India?

In Chennai, India, NDT testing is conducted by certified professionals from Geo Con Tech Group. These professionals have attained various proficiency levels (Level 1, Level 2, and Level 3) based on their experience and training. They are authorized to conduct test procedures, document results, evaluate findings according to standards, and oversee the entire testing facility.

3. How to contact an NDT testing company in Chennai, India?

To contact an NDT testing company like Geo Con Tech Group in Chennai, India, you can reach out through their official website or contact them directly via phone or email. Their customer service team will assist you in scheduling testing services, providing detailed information about their methods, and addressing any specific needs or inquiries you may have.

#ndt testing #structuralengineering #civil engineering

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lauramalchowblog · 4 years