Scrubbers corrosion fix and surface treatment

Worldwide Stainless Steel Condition Inspection and Stainless Steel Corrosion Damage Inspection

Technical Inspections and report subjects:
  • Stainless Steel Surface Condition
  • Corrosion Analysis
  • Pitting Corrosion Depth Measurements
  • Surface Roughness Testing
  • Passivity Testing
  • Weld Inspection (NDT)
  • Endoscope Camera Test (interior piping condition)
  • Inspection Report afterwards

A clean and passive surface finish is crucial to corrosion resistance. Stainless steel is protected from corrosion by its passive layer - a thin, impervious, invisible, surface layer that is primarily chromium oxide. The oxygen content of the atmosphere or of aerated aqueous solutions is normally sufficient to create and maintain ('self-heal') this passive layer. Unfortunately, surface defects and imperfections introduced during manufacturing or caused by aggressive chemical loadings may drastically disturb this 'self-healing' process and reduce resistance to several types of local corrosion. Thus, as regards hygiene and corrosion, a final cleaning process is required to restore an acceptable surface quality. 

Stainless Steel Surface Treatment needs to be carried out to remove or clean:   
  • Corrosion / Rust
  • Ferrous Contamination  / Free Irons
  • Light Discoloration
  • Hydrocarbons
  • Starting Pitting   
  • Cargo Residue
Chemical cleaning with Nitric Acid in compliance with: 
  • FOSFA Qualifications & Requirements 

Passivation is a chemical treatment with a specific acid formulation that removes free-iron or other surface contamination from the stainless steel while simultaneously promoting the formation of a passive chromium/nickel oxide layer to act as a barrier to further corrosion.

Stainless Steel Surface Treatment needs to be carried out to restore or to repair:
  • Damaged passivation layers brinning back to  a thick uniform chromium oxide layer 
  • Unstable passivity readings bringing back a stable passive chromium oxide layer 
  • Stainless Steel Corrosion resistance interference by ferrous contamination / free irons 
Stainless Steel Condition Inspection - Stainless Steel Cargo Tank Inspection - Inspection of Stainless Steel Scrubber - Corrosion Inspection - Corrosion Damage Report - Stainless Steel Corrosion Inspection - Inspection of Corrosion on Stainless Steel

ISTECH worldwide experience and specialized

ISTECH has more than 35 years experience worldwide in Stainless Steel Surface Treatment and inspections of:
  • Stainless Steel Cargo Tanks, Heating Coils and Cargo Lines
  • Stainless Steel Piping
  • Stainless Steel Scrubbers
  • Stainless Steel Brewery Equipment and Installations
  • Stainless Steel Fish Processing Lines and Equipment
  • Stainless Steel Public (Art) Objects 

ISTECH is specialized in Chemical Surface Treatment of Stainless Steel by:
  • Pickling (descaling) and Passivation
  • Chemical passivation
  • FOSFA Cleaning
  • Corrosion Treatment
  • Cleaning
  • Degreasing