AMPP Corrosion Technologist case studies
AMPP Corrosion Technologist · Put your knowledge to work in context.
The AMPP Corrosion Technologist certification is a written, theory-based credential for experienced corrosion practitioners who need to demonstrate command of corrosion theory, prevention, and advanced corrosion-control techniques. AMPP positions it for metallurgists, corrosion and equipment engineers, design engineers, and supervisors or foremen - people who apply corrosion theory to real problems and execute responsible work under the direction of senior personnel. The AMPP Corrosion Technologist case studies are 5 cases and about 2,854 words.
1Rectifier Output Drift on a Coastal Buried Piping System
A 4.2 km buried carbon steel firewater main in sandy coastal soil is protected by an impressed-current system: one 60 V/40 A rectifier feeding a 30 m mixed-metal-oxide anode bed, with close-interval surveys run quarterly. At commissioning the rectifier ran at 22 A, and the 'instant-off' pipe-to-soil potentials averaged -1.05 V vs CSE.
637 words, about 3 min2Coating Selection for a Splash-Zone Offshore Riser
A new offshore production riser will operate in the splash zone, with surface temperatures cycling between 5 °C and 45 °C, continuous salt spray, and mechanical abrasion from supply-boat contact during transfer operations. The owner specifies a three-coat system: zinc-rich primer, epoxy intermediate, and polyurethane topcoat, total DFT 320 µm.
556 words, about 3 min3Material Selection for a Wet Sour Gas Separator
A new two-phase separator will handle wet sour gas at 65 °C and 45 bar, with H2S partial pressure of 0.35 bar, CO2 partial pressure of 8 bar, and produced water chloride of 60,000 mg/L. The current design uses carbon steel with 3 mm corrosion allowance.
574 words, about 3 min4Internal Corrosion of a Wet Sour Gas Gathering Line
A 6-inch carbon steel gathering line carries wet sour gas from three wells to a central processing facility. Operating pressure is 30 bar, temperature 40 °C, and the gas contains 1.2 mol% H2S and 4 mol% CO2.
571 words, about 3 min5Corrosion Inhibitor Program for a Produced Water Injection System
A produced water injection system handles 15,000 m³/day of deaerated water at 50 °C, with 12,000 mg/L chloride, 2 mg/L dissolved oxygen (target <20 ppb), and traces of H2S. The carbon steel injection lines have shown pitting at weld heat-affected zones and occasional iron spikes in water analysis.
516 words, about 3 min