The application of the RBI methodology in the industry

25 February 2020

The RBI methodology is not defined by a single text, but by a set of texts, each adapted to the types of equipment concerned.

Which texts to refer to?


In Anglo-Saxon countries, the American Petroleum Institute (API) will be preferred, but they can also be used in France:

  • API 580 Risk-based Inspection
  • API 581 Risk-based Inspection Technology


The types of equipment concerned are :

  • Pressure vessels
  • Heat exchangers (shell and components side, pressure boundary tube side)
  • Heat exchanger housings and bundles
  • Pipes and Tubes
  • Atmospheric storage tank shell and bottom plates
  • Compressors (Pressure limit only)
  • Pumps (Pressure limit only)
  • Pressure Relief Devices (Including Equipment Protection)


In France, preference will also be given to recognized professional guides.

The reference texts for equipment under pressure or under voluntary monitoring are :

  • DT 32 Guide for the establishment of an inspection plan (IP and RP periodicity 5 and 10 years)
  • DT 84 Guide for the establishment of an inspection plan (IP and RP periodicity > 5 and > 10 years)

API 580 & 581 can also be used.



But two methodologies can also be combined. This criticality is expressed by a “Probability-Consequences” matrix described in the UFIP/UIC DT84 Guide for general domains and API 581 for details on the criteria to be used.


The reference texts for cylindrical overhead storage tanks are :

  • EEMUA 159 (Engineering Equiment and Matériaux User Association) “Users’ Guide to the Inspection, Maintenance and Repair of Above Ground Vertical Cylindrical Steel Storage Tanks”
  • API 580 & 581
  • Guides professionnels DT 32 et DT 84, qui peuvent être utilisés par les Services d’Inspection Reconnus (SIR)


Note: The benchmarks used as a basis for the RBI methodology will have to be available on the concerned industrial site.

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