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  Leak seal(0)

  This is a service that stops various leaking fluids from the planned piping while maintaining the operating conditions.

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  Composite repair(0)

  This is a service for the restoration of strength and leak prevention of piping using carbon fiber composites.

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  Tank roof repair(0)

  It is a leakage repair service for floating roof tanks.

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  Pharmacies(0)

  This is a service to release a valve that has become stuck and inoperable.

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  Introduction of Composite Repair Cases (Power Plants)(0)

  Due to welding dissimilar metals to the tee joint, we observed wall thinning at the weld seam and water leakage from the through holes due to galvanic corrosion. To reduce the progression of wall thinning and the risk of fracture, we adopted our composite repair. Based on strength calculations according to ISO 24817, we calculated the number of layers required to suppress water leakage at the time of fracture, assuming that the entire circumference of the weld seam would fracture. Thanks to the flexible sheet-like carbon fiber woven in four directions, it can be applied not only to straight pipes but also to complex shapes of piping and equipment, such as tee joints. Furthermore, the repair layer is very lightweight, so there is no need to install additional support for the piping. With our composite repair, we were able to reduce the risk of human injury and the risk of unexpected shutdowns at the power plant.

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  Composite Repair Case Study (Oil Refining)(0)

  The underside of the piping has extensive wall thinning, and it was absolutely necessary to prevent any leakage from the piping until it could be replaced during the next scheduled maintenance. Since this is within a refinery, reinforcement with welded steel plates could not be performed. Additionally, stopping the equipment would incur enormous costs, so we adopted our composite repair. According to strength calculations, it was determined that even if leakage occurred due to penetration at the thinned areas, complete prevention of leakage could be achieved with five layers of lamination. Since there was a risk of penetration, we did not perform surface preparation at the thinned areas, and instead, we applied composite repair only to the underside of the thinned piping, rather than around the entire circumference of the piping. If the internal fluid pressure is below 0.1 MPa, even in piping with a large diameter and extensive wall thinning, long-term preventive maintenance is possible with the composite layer.

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