AMPP Corrosion Specialist case studies
AMPP Corrosion Specialist · Put your knowledge to work in context.
Corrosion Specialist Certification is described by AMPP as its highest-level corrosion credential, intended for professionals who lead corrosion control across theory, design, strategy, and execution. It is an application-based certification rather than an entry-level exam path: candidates must already hold an active advanced credential - such as AMPP Cathodic Protection Specialist, Internal Corrosion Specialist, or Protective Coatings Specialist - before applying. The AMPP Corrosion Specialist case studies are 5 cases and about 4,076 words.
1Wet-gas flowline: coupon rate versus UT pitting
A 12-inch API 5L X65 flowline carries wet gas from three wells to a slug catcher 3.1 km away. It runs at 62 °C and 78 bar with 6.2 mol% CO2, 40 ppm H2S and 34% water cut; produced water has 18,000 mg/L chloride and the water phase pH is 5.7.
813 words, about 4 min2Seawater cooler: is 2205 duplex the right upgrade?
A coastal refinery's seawater cooling circuit uses a fixed-tubesheet exchanger with 316L tubes. The tubes have perforated at the rolled tube-to-tubesheet joints after four years.
769 words, about 4 min3Groundbed failure and foreign-line interference on a coated crude line
A 42 km, 610 mm OD, 3LPE-coated crude line was commissioned 12 years ago with four impressed-current stations 8–14 km apart. Station 2 at km 12 has a 50 m deep vertical groundbed with 12 mixed-metal-oxide anodes in coke breeze.
831 words, about 4 min4Turnaround elbow: remaining life against an inspector's hold
At a crude unit turnaround with nine days left, a 10-inch long-radius elbow on the column overhead line was profiled by phased array. Nominal wall is 12.7 mm; the ASME B31.3 minimum required thickness is 7.1 mm; the lowest reading is 9.4 mm.
813 words, about 4 min5Firewater main pinholes: MIC forensics and programme response
A terminal firewater ring main is 12-inch carbon steel, 30 years old, kept full and pressurised at 7 bar with treated municipal water. It has flowed only twice in 18 months.
850 words, about 4 min