Out of Service / On-Stream inspection

Out of Service / On-Stream inspection

A. On-Service Inspection (OSI)

This inspection is performed while the tank is still in service.

  • Inspection Scope mainly involves detailed visual examination on exterior of the tank done by an authorized API-653 inspector and ultrasonic thickness measurement of the shell & roof plate including all nozzles.

B. Out of Service Inspection (OOSI)

This inspection is performed while the tank is not in service.

  • Our authorized API-653 inspector conducts a visual inspection on exterior & interior of the tank and assures the quality and completeness of the nondestructive examination (NDE) results.
  • Nondestructive examination mainly involves MFLT on tank bottom & annular plates, ultrasonic thickness measurement of the shell & roof plate including all nozzles.

C. Reports:

Inspections shall be documented in a comprehensive report containing:

  • All observations
  • NDE results (UT, MFTL, etc.)
  • Complete evaluation of the condition of the tank
  • Tank repair recommendations, remaining life, tank external shell settlement cosine graph and inspection interval.

SafeGuard inspection, Tomorrows protection