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Non Destructive Testing

Mass Tank inspection technicians are well trained in various NDT methods to inspect your tank or tank system.

Non-destructive testing (NDT) is a set of techniques and methods used to evaluate the properties and integrity of materials, components, and structures without causing damage to the tested item. Non-destructive testing (NDT) of tanks is a crucial practice in various industries, especially in those that rely on storage tanks for the containment of liquids, gases, or bulk materials. The primary purpose of NDT for tanks is to ensure the structural integrity and reliability of these containers, as well as to identify and address any defects or weaknesses that could compromise their safety and functionality. Here’s an overview of NDT testing of tanks:

Types of NDT Methods for Tank Inspection:

  1. Ultrasonic Testing (UT): UT involves the use of high-frequency sound waves to detect internal flaws in the material, measure wall thickness, and identify corrosion or erosion. It is especially useful for assessing the condition of tank walls.
  2. Radiographic Testing (RT): RT employs X-rays or gamma rays to create images of the tank’s internal structure. It is effective for identifying weld defects, material imperfections, and internal corrosion.
  3. Magnetic Particle Testing (MT): MT is used to detect surface and near-surface defects in ferromagnetic materials, such as the tank’s shell or welds. It is particularly useful for identifying cracks and discontinuities.
  4. Liquid Penetrant Testing (PT): PT is utilized to identify surface flaws, such as cracks, leaks, or discontinuities, by applying a penetrant fluid that is drawn into defects and then revealed through the application of a developer.
  5. Visual Testing (VT): VT is a basic but essential method for inspecting the tank’s exterior and interior surfaces for signs of corrosion, damage, or defects. It may also involve the use of remote cameras for inspecting areas that are challenging to access.
  6. Eddy Current Testing (ET): ET is employed to detect cracks, corrosion, and changes in material properties, particularly in non-ferrous materials such as aluminum and stainless steel.

Applications of NDT Testing for Tanks:

  1. Storage Tanks: NDT is used to assess the condition of storage tanks, including above-ground storage tanks (ASTs) and underground storage tanks (USTs). It helps detect and monitor corrosion, leaks, and other defects.
  2. Pressure Vessels: Tanks that operate under pressure, such as boilers, reactors, and compressed gas storage vessels, undergo NDT to ensure their structural integrity and safety.
  3. Pipelines: NDT is also essential for inspecting the integrity of pipelines that transport fluids to and from tanks.

Benefits of NDT Testing for Tanks:

  1. Safety: NDT helps identify potential safety risks associated with tank failures, such as leaks, structural damage, or material degradation.
  2. Environmental Protection: Detecting leaks and preventing hazardous material spills or releases is crucial for protecting the environment.
  3. Regulatory Compliance: Many industries are subject to regulations that require routine NDT of tanks to ensure compliance with safety and environmental standards.
  4. Asset Integrity: NDT contributes to the preservation of tank assets by identifying and addressing issues early, thereby extending their service life.
  5. Cost Savings: Early detection of defects through NDT can prevent costly repairs and downtime while optimizing maintenance schedules.

In summary, NDT testing of tanks is an essential practice for ensuring the safety, environmental compliance, and longevity of tanks in various industries. By using a combination of NDT methods, operators can effectively assess the condition of their tanks and take proactive measures to address any identified issues, thereby minimizing risks and costs.