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Fiberscope Inspection

Japan: Utility model Nos. 3140465 and 3159268

Internal condition of underground tanks can be checked.

Problem caused by aged deterioration
Underground steel storage tanks will get corroded in 20 to 30 years, depending on surrounding environment, which will increase the leakage risk of hazardous materials rapidly. Nowadays some of service stations had to close their business because of that.
Inspection to comprehend current condition
Current condition of underground tanks is inspected by using fiberscope.
Quite a lot of aged tanks have rust and corrosion inside as shown in the photos below.

Fiberscope inspection scene

  • Insert fiberscope from the top

    Insert fiberscope from the top

  • making a diagnosis of tank inside image by the fiberscope

    making a diagnosis of tank inside image by the fiberscope

film the footage

  • Measurement of pebbles length 6.35mm

    Measurement of pebbles length 6.35mm

  • Measurement of rust depth -1.99mm

    Measurement of rust depth -1.99mm

  • Inadequate dissolution of the internal welding of the piping joints

    Inadequate dissolution of the internal welding of the piping joints

Pressure test in combination with fiberscope inspection will bring you the following findings.

fiberscope

Visual inspection of tank and pipe inside

Condition of foreign particles and sediment in tanks and pipes

Condition of whether there is any corrosion or corrosion pit in tanks and pipes, or not

Condition of soundness degree of pipes such as inadequate welding dissolution at piping joints

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