Tank Engineering Services

We Ensure Your Tank Integrity

Qi2 Elements professional engineering team supports operators need to identify and assess engineering risks, quantify material conditions, and put in place programs to assure that tank integrity and safe operation is maintainable for every tank structure. From single services to integrated solutions, we provide a range of P.E. delivered engineering services to address API, STI, EPA, as well as individual U.S. state standards and requirements.


  • Fitness-for-Service (FFS API 579)
  • Fitness-for-Service (FFS) Hydro
  • Finite Element Analysis (FEA)
  • RBI and Similar Service
  • Change of Service


  • Roundness/Plumbness
  • Tank Calibration and Strappings
  • Dike Volume Surveys and 3D Dike Volume Surveys
  • Fill Height Evaluation
  • 3D Floating Roof Operability Evaluation


  • Weld Procedure Review
  • Engineering Review of Drawings
  • Repair Plans
  • Hydro Survey Analysis

Component Integrity

  • Venting Analysis
  • In-Service Floating Roof Leg Assessment
  • Roof Hitch Analysis
  • Roof Column and Girder Evaluation

Load Tolerances

  • Wind
  • Hail
  • Snow
  • Seismic