INSPECT Implements Recognized and Generally Accepted Good Engineering Practices (RAGAGEP)

For example, RAGAGEP IS:

  • Using all the provisions from the most recent applicable consensus standard, the correct allowable stress and joint efficiency etc.
  • Considering all the loads acting on the equipment. In addition to pressure, these include static liquid head, weight, wind and seismic loads on the pressure vessel and its supports as well as (piping) loads on nozzle attachments.

  • Considering brittle fracture as a failure mode for carbon steel equipment using ASME VIII-1 paragraph UCS-66 or API 579 Part 3. This may, for example, affect equipment start-up and field hydrotest conditions.

  • Implemented in INSPECT.


  • A simplistic internal pressure formula for calculating Tmin or ignoring the external pressure Tmin (a very involved calculation).

  • A nozzle Tmin arrived at by only considering ASME VIII-1 paragraph UG-45. Area replacement, proximity to other openings and more must be taken into account.

  • Black box computer output with no way to verify (audit) the correctness of the calculations performed.
  • Using an outdated version of API RP 579/ASME FFS-1 for fitness-for service evaluations.