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Dominion NDT Services, Inc.

Dominion NDT Services, Inc. is a SWaM owned independent Non-Destructive Testing company based out of Richmond, VA.

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United States

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Overview

Dominion NDT Services, Inc., a SWaM (Small, Women-owned, and Minority-owned Business) owned and independent Non-Destructive Testing company, proudly calls Richmond, VA its home. With a collective experience exceeding 75 years, including both Nuclear and Non-Nuclear applications in both the Military and the private sector, their team brings a wealth of industry knowledge to the table.

Dominion NDT is driven by an unwavering commitment to providing clients with integrity management solutions through the application of Non-Destructive Testing practices that are not only safe but also cost-effective and efficient. This commitment comes to life through the innovative use of traditional and advanced Non-Destructive Testing methods.

At Dominion NDT, their comprehensive inspection solutions encompass a range of techniques, including Radiographic Testing, Ultrasonic Testing, Liquid Penetrant Testing, Magnetic Particle Testing, Hardness Testing, and other NDT methods. Their NDT programs are pivotal in managing inspection data for various equipment, such as Pressure Vessels, Piping, Tanks, and more. These programs ensure that all equipment-related files, drawings, and documents are organized and easily accessible from a single, convenient location.

Products & Services
Liquid Penetrant Testing (PT)

Liquid Penetrant Testing (PT), also referred to as Liquid Penetrate Inspection (LPI) or Dye Penetrant Inspection (DPI), is a widely applied and cost-effective inspection method used to locate surface-breaking defects in all non-porous materials (metals, plastics, or ceramics).

This inspection may be performed on ferrous and non-ferrous materials.

Penetrant Testing is used to detect casting, forging, and welding surface defects such as hairline cracks, surface porosity, leaks, and fatigue cracks on new and in-service components.

PT is one of the most widely used and cost-effective Non-Destructive Testing (NDT) methods. Its popularity can be attributed to two main factors: its relative ease of use and its flexibility.

Liquid penetrant inspection can only be used to inspect for flaws that break the surface of the sample. Some of these flaws are listed below:

  • Fatigue cracks
  • Quench cracks
  • Grinding cracks
  • Overload and impact fractures
  • Porosity
  • Laps
  • Seams
  • Pin holes in welds
  • Lack of fusion or braising along the edge of the bond line
Magnetic Particle Testing (MT)

Magnetic Particle Inspection (MT) is used for defect detection of surface and near-surface discontinuities in ferrous materials.

Magnetic Testing is fast and relatively easy to apply; surface preparation of the component is not as critical as it is for some other NDT methods making it one of the most widely utilized nondestructive testing methods.

MT uses magnetic fields and small magnetic particles (very fine iron filings) to detect flaws in components.

The only requirement from an inspection-ability standpoint is that the component being inspected must be made of a ferromagnetic material such as iron, nickel, cobalt, or some of their alloys. Ferromagnetic materials are materials that can be magnetized to a level that will allow the inspection to be effective.

This method is used to inspect a variety of products including castings, forgings, and weldments.

Many different industries use magnetic particle inspection to determine a component’s fitness for use.

Visual Testing (VT)

AWS Certified Welding Inspection API & ASME standards.

Visual Testing (VT) requires:

  • line-of-sight contact with the portion of the specimen to be inspected,
  • adequate illumination of the test specimen,
  • a thorough understanding of the nature and origin of discontinuities and potential defects within the test object,
  • and familiarity with the specifications controlling the inspection process.

Visual testing presents several real advantages: simplicity, rapidity, low cost, minimal equipment requirements, and the ability to be performed while the specimen is being used or processed.

Often Visual Inspection eliminates the need for further testing and the associated costs.

This method is used to inspect a variety of product forms including castings, forgings, machined components and weldments.

The structural steel, automotive, petrochemical, power generation, and aerospace industries are a few of the many types of end-users utilizing VT.

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