Integrity Verification Questionnaire for Corrosion Monitoring and Protection System
Minimization of corrosion rates on hydrocarbon and other critical equipment and systems
The objective of Corrosion Monitoring and Protection System is to minimize internal and external corrosion rates on hydrocarbon and other critical piping systems, process components, storage tanks and structural supports. During design and operational phases, the examination scheme for Corrosion Monitoring and Protection System would include following questions:
Is material selection used as the primary means of corrosion control? If selection of materials needs to be combined with other corrosion control measures such as metallic cladding, organic coatings, corrosion inhibitors, cathodic protection etc., do these measures comply with proven practices in a similar service? Will the selected material provide adequate protection against the worst case expected corrosion including Hydrogen Sulphide (H2S) induced stress corrosion cracking?
Is corrosion allowance defined after careful evaluation of possible erosion, cavitation and corrosion factors for each process stream?
Is Corrosion monitoring and/or Thickness survey performed periodically to analyze corrosion damage rates providing early warning of equipment failure due to corrosion and to optimize application rates of chemicals used for corrosion control?
Are all corrosion monitoring systems used for detecting corrosion activity on other HSECES considered as independent HSECES themselves? Intrusive methods, Non-Intrusive extractive methods and non intrusive non extractive methods should also be included as a part of this HSECES.
Are all corrosion protection systems used protection of other HSECES considered as independent HSECES themselves? Chemical inhibition, metallic cladding, internal coating and lining, external painting and coating, sacrificial anodes and cathodic protection should also be considered as a part of this HSECES.
Are all corrosion protection systems used on HSECES and are themselves be regarded as HSECES and included chemical inhibition, metallic cladding, internal coating and lining, external painting and coating, sacrificial anodes and cathodic protection?
Does corrosion monitoring and protection systems as HSECES cover hydrocarbons and other critical piping systems, process components, pipelines, storage tanks, structural supports including steel in concrete structures, fire mains and any hidden corrosion that could occur under thermal insulation and fire proofing?
For Offshore structures, is the structure and foundation protected against marine environmental agents?