Corrosion Management Services
The services OSG can provide include:
- Assessing corrosion rates and defining the requirements for inhibition, internal protection or the selection of corrosion resistant alloys.
- Corrosion mechanisms - galvanic, crevice, pitting, preferential weldment corrosion, corrosion fatigue, inter / intragranular, SCC, SSC and HPIC, SOHIC, MIC.
- Specialist materials testing for sour service (HISC, SOHIC, HE, SSCC and the full ring test), including sour service requirements for plastically strained line pipe.
- Cathodic protection (CP) design work for flowlines and SCR's, subsea components, offshore pipelines, offshore structures and onshore pipelines and tanks and terminals. Utilization of attenuation calculations for the CP design of SCR's and insulated and non-insulated flowlines.
- Corrosion rates in CO2 containing environments, using programs such as deWaard/Milliams, Norsok and Electronic Corrosion Engineer.
- Materials susceptibility to H2S bearing hydrocarbon service using NACE MR 0175 and EFC 16.
- Corrosion theory, anodic/cathodic reactions, polarization diagrams, Evans diagram, principles of cathodic protection, over potentials, galvanic series/couples.
- Coating selection for pipelines, risers, subsea structure, topsides and field joints, e.g. coal tar, FBE, epoxies, polyolefinics, 3 layers, PU, high temperature systems, arctic coatings, insulations and new coatings technologies.
- Coating testing requirements (laboratory and field) including cathodic disbondment, impact, high temperature, high pressure, collapse, sour service.
- Cause and effects of corrosion.
- Causes of failure to pipelines, risers and subsea equipment.
- Internal and external corrosion mechanisms on pipelines, subsea structures/components, topsides components, piping.
- Specifying and checking coatings before, during and after application.
- Selecting, specifying and checking cathodic protection monitoring systems and site surveys.
- Field joint coating materials selection, design and application methodologies.
- Hydrate prevention (methanol), dehydration systems (MEG/TEG) and dew point control.