MAGNETIC PARTICLE TESTING
Magnetic Particle Testing (MT) is used to detect surface and subsurface in ferroelectric materials such as iron, nickel, cobalt, and some of their alloys. The process puts a magnetic field into the part. The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when an electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs when no electric current is passed through the test object, but a magnetic field is applied from an outside source. The magnetic lines of force travel perpendicular to the direction of the electric current which may be either alternating current (AC) or some form of direct current (DC) (rectified AC). The presence of a surface or subsurface discontinuity in the material creates magnetic flux leakage. Ferrous iron particles are applied to the part. The particles may be dry or in a wet suspension. If an area of flux leakage is present the particles will be attracted to this area. The particles will build up at the area of leakage and form what is known as an indication. The indication is then evaluated to determine what it is, what may have caused it, and what action should be taken if any. Premier NDT is capable of supplying 1500 to 6000 Amp generators for large applications and Magnetic yokes for smaller applications.
Ultrasonic Testing (UT) is a portable volumetric examination that uses high frequency sound waves to exam, measure and inspect for thickness, flaws and weakness. Human and material flaws will never be completely eliminated and in-service damage and ware require continual “safe use” evaluation.
Single crystal normal Beam & Twin Crystal Testing (TR) for find Lamination in test plates & Ultrasonic Thickness Measurement (UTM) is frequently used to asses corrosion, erosion, and mechanical damage of the structural materials on tanks, vessels, piping, castings and structural steel. The testing is accomplished with portable equipment and the results are evaluated to industry standards, codes, or customer specifications. This method can locate and measure the amount of corrosion, erosion or voids within a material. This data is than used to assess the life expectancy of the component or if repairs are required before returned to service.
Angle Probe for weld scanning -Shear Wave sometimes referred to as Angled Beam Ultrasonic testing is a portable testing method that offers an effective test for weld inspection in pipes, pressure vessels, plates or in areas that other test methods are not feasible or particle. The shear wave method is great for fusion type defects or cracks, whither it is in a weld or on the specimen itself.
NDT Services provides a complete line of radiographic examination services. Our experienced and certified professional radiographers obtain high quality images that allow expert interpretation to determine if an anomaly or defect can be accepted under code requirements.
Radiographic testing is a non-destructive testing of components and assemblies that is based on differential absorption of penetrating radiation- either electromagnetic radiation of very short wave-lengths or particulate radiation by the part or test piece being tested. Because of differences in density and variations in thickness of the part, or differences in absorption characteristics caused by variation in composition, different portions of a test piece absorb different amounts of penetrating radiation. Unabsorbed radiation passing through the part can be recorded on film or photosensitive paper, viewed on a florescent screen or monitored by various types of electronic radiation detectors.
The term radiography testing usually implies a radiographic process that produces a permanent image on film or paper. Although in a broad sense it refers to all forms of radiographic testing. Neutron radiography refers to radiographic testing using a stream of neutrons rather than electromagnetic radiation.
Liquid Penetrant Testing (LPT) also called Dye Penetrant Inspection (DPI) and Penetrant Testing (PT), is widely used to detect surface defects in castings, forging, welding, material cracks, porosities and possible fatigue failure areas.
The material is cleaned and then coated with a visible or fluorescent dye solution. Technicians remove the excess solution after waiting a specified time (Dwell Time) than he/she applies a developer to the material. The developer acts like a blotter, pulling the dye solutions out of the imperfections. Visible dyes will show a sharp contrast between penetrant and developer making the “bleedout” easy to see. Fluorescent dyes are viewed with an ultraviolet lamp, which makes the “bleedout” fluoresce brightly reveling any material imperfections.
Level III Consultancy services:
When your project requires a Level III technician, you can really on our NDT Services to provide the right assistance. The American Society for Nondestructive Testing's Level III certification is a highly sought-after and difficult to attain credential that indicates expertise and advanced knowledge in nondestructive examination and testing. Because the credential is difficult to attain yet often required in product manufacturing, many companies turn to us for our Level III consulting capability. Our Level III inspectors are available to consult at training programs, discuss procedures, help certify staff and review procedures and review radiographs.
THIRD PARTY AUDITING/VENDOR SURVEILLANCE
When it comes to testing for quality and material performance, no one wants compromises. At BRIS NDT Services our experienced NDE technicians understand quality assurance services are crucial to managing the risks of missing components and material defects. As a third-party consultant, we work with owners, manufacturers and contractors to perform quality assurance services, assess the effectiveness of testing procedures and the correctness and accuracy of testing results. We also provide project specification review to evaluate project compliance with national industry standards.