Loctite composite repair system from Henkel can repair Type A and B defects

《Loctite composite repair system from Henkel can repair Type A and B defects》:

The Loctite composite repair system from Henkel, certified according to ISO/TS 24817, is suitable for repairing both Type A (non-through-wall) and Type B (through-wall) defects, covering repair classes 1–3. In addition to straight pipes, other components such as bends, tees, reducers or flanges can be repaired.

A Henkel product being applied

The first step in the repair procedure is to clean and sandblast the surface in the repair area. Since blasted metal surfaces are extremely susceptible to flash rust, Henkel recommends applying the Loctite SF 7515 corrosion inhibitor as a surface treatment providing temporary protection.

In case of Type A defects, the original outer pipe diameter needs to be restored by filling the cavities with Loctite EA 3478. The pipe is then wrapped with Loctite 5085 high-strength glass carbon-fibre tape that has been impregnated with the Loctite PC 7210 temperature-resistant, two-part epoxy resin.

This adhesive has been specifically engineered for bonding to steel substrates and exhibits exceptionally high adhesion. The repaired section is then sealed with the Loctite PC 7255 sprayable ceramic topcoat. The composite repair system thus reinforces steel pipes for continued duty under high pressure and thermal cycling while increasing their chemical resistance.

Key features and benefits

  • The system eliminates the need to replace piping components. Corroded pipes can be repaired in situ, without any interruption to operations and even with high internal pressure, thus avoiding stoppages and commercial losses.
  • The quality achieved by the repair can increase the lifetime of steel pipelines by up to 20 years.
  • To maximise safety and efficiency, Henkel has developed a software tool to calculate exactly how the repair should be executed. Henkel has also had this calculation tool certified by DNV GL.
  • To ensure that the repair system is properly applied at all times in practice, companies and technicians who are to perform such work must undergo training by the provider of the system. This is specified in the ISO certification and required by DNV GL. Henkel has developed a tailor-made training programme to meet these requirements.
  • Applicators can also have their full operations validated by Henkel. Certification is based on passing an audit that Henkel conducts at the respective company’s premises.

A Henkel product being applied

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