Steel tank corrosion protection using CarbonSeal™.
Problem vs solution:
- This steel tank T-932, contains 57% concentrated nitric oxide. Spilling occurred that exposed the exterior of the tank to the 57% solution of nitric oxide.
- Severe corrosion of the shell-to-floor weld and associated heat affected zone (HAZ) was observed in two distinct areas. Both areas were found to be approximately 1-inch wide. The largest area was 36-inches long and the smallest area was 10-inches long.
- HJ3’s CarbonSeal™ industrial composite system patched the 1-inch x 10-inch and 1-inch x 36-inch defect areas and returned them to their original steel strength, bringing the tank back within API-653 allowable corrosion allowance.
- The repair also mitigates future corrosion in this area as the CFRP patches protect from future nitric oxide spills.