Welding is a crucial process in the construction and maintenance of offshore containers, ensuring the structural integrity and durability of these containers in harsh marine environments. To ensure the highest level of safety and reliability, welding inspection plays an essential role in identifying any potential flaws that could lead to structural failure. At TLS, we prioritize stringent welding inspection protocols in line with international standards, aiming to deliver top-quality, secure containers for offshore operations.
 
Why Welding Inspection is Critical for Offshore Containers 
Offshore containers endure extreme conditions, including exposure to saltwater, heavy loads, and severe weather, all of which put stress on welded joints. Even minor defects in welds can weaken the container’s structure, leading to potential safety risks. Welding inspection, as part of a comprehensive non-destructive testing (NDT) regimen, helps detect cracks, pores, and other imperfections that could compromise the container’s structural integrity.
 
Common Welding Inspection Methods
To maintain the quality and durability of TLS offshore containers, we employ a range of NDT methods to inspect welds. Here are some of the primary methods used in the industry:
  1. Visual Inspection: The most straightforward approach, visual inspection involves examining the weld surface for visible defects such as cracks, undercuts, and improper welding techniques.
  2. Ultrasonic Testing: This method utilizes sound waves to penetrate the weld and detect internal flaws that may not be visible on the surface, such as inclusions or porosity.
  3. Magnetic Particle Testing: Widely used by TLS, this technique involves applying a magnetic field to the welded area and then coating it with magnetic powder. Any surface or near-surface defect disrupts the magnetic field, causing the powder to accumulate at the defect, making it easy to detect.
  4. Radiographic Testing: By using X-rays or gamma rays, radiographic testing can capture images of the weld, revealing internal discontinuities and enabling detailed inspection of the weld’s structure.
  5. Eddy Current Testing: This technique is effective for detecting surface cracks in conductive materials. It works by inducing currents that create a magnetic field, revealing flaws as changes in the electrical flow.

TLS's Approach to Welding Inspection
At TLS, we adhere to strict international standards for both production and inspection to ensure our offshore containers meet the highest quality requirements. Magnetic Particle Testing (MPT) is one of the preferred NDT methods we employ due to its reliability in detecting surface and near-surface flaws, crucial for offshore containers. Here’s an overview of our MPT process:
  • Surface Preparation: We begin by cleaning the container surface, removing any grease, dirt, or impurities that might interfere with the inspection.
  • Applying Magnetic Powder: A fine layer of magnetic powder is evenly applied to the surface, usually consisting of iron and magnetic particles.
  • Magnetization: The container is placed in a magnetic field, which may be constant or alternating based on inspection requirements.
  • Flaw Detection: A light source or magnetic probe helps visualize the magnetic powder distribution, revealing any cracks or imperfections on the surface.

The TLS Commitment to Quality
By incorporating advanced NDT techniques, TLS ensures that every offshore container meets strict quality control standards. Our dedication to robust welding inspection practices allows us to deliver containers that are both durable and dependable, ready for the toughest offshore conditions.
 
 
TLS Offshore Containers / TLS Special Containers is a global supplier of standard and customised containerised solutions. 
Wherever you are in the world TLS can help you, please contact us.
 
 
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Written by Oliver