BELZONA REPAIRS PIPES TRANSPORTING SULFURIC ACID

KHIA ID: 232
Industry: Chemical & Petrochemical (PETR)
Application: VPF-Valves, Pipes and Fittings (VPF)
Substrate: Stainless steel
Customer Location: Refinery in Minnesota, U.S.A.
Application Date: 1996
Products:

Belzona® 4301 (Magma CR1 Hi-Build)

Belzona® 4311 (Magma CR1)

Belzona® 9341 (Reinforcement Tape)

Problem: Thin spots were detected on the pipe by UT inspection. The pipe required reinforcement.
Photograph Descriptions
  1. Following surface preparation by cleaning, Belzona® 4301 was applied with reinforcement tape
  2. Finishing touches with a top coat of Belzona® 4311
  3. Finished job
Application Situation
Pipe carrying sufuric acid at 80 psi.
Application Method
The application was carried out in accordance with a modified version of Belzona Know-How System Leaflet VPF-11a.
Belzona Facts
Belzona® 4300 Series Magma Polymers resist sufuric acid at concentrations up to 98%. Prior to this repair the customer conducted a test to evaluate the Belzona materials. A hole was drilled through a mock pipe, and the Belzona Polymers were applied with a reinforcement sheet. The pipe held to 800 psi before leaking.
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