In addition to the core pressure vessel rerating services offered, Inzaption has experience and is able to assist in the following areas:



Misc. Pressure Vessel:

  • Code calculations supporting repairs to existing pressure vessels and heat exchangers.
  • Appendix 2 flange design and calculations.
  • Flange bolting requirements.


Piping Systems:

  • Pipe Stress Analysis for high energy systems (steam, condensate, hot water, etc.)
    • Piping support reaction forces
    • Nozzle loadings on pumps, vessels, and other equipment
    • Expansion joint sizing
    • Spring can/hanger sizing
  • WRC analysis of branch connections
  • Development of pipe specifications


Hydraulic Analysis of Piping Systems:

  • Open and closed systems
  • Incompressible and compressible flow
  • Utility Studies - Evaluation of plant process utilities (Compressed Air, Nitrogen, Natural Gas, Cooling Water, Chilled Water, etc.) to determine existing capabilities, evaluate future demands, and recommended improvements.
  • Pump sizing
  • Control valve sizing


Rotating Equipment Specifications & Sizing:

  • Pumps - Centrifugal, Positive Displacement, etc.
  • Fans
  • Blowers



Tank Design and Specifications:

  • API-650 - Welded Tanks for Oil Storage
  • API-620 - Design and Construction of Large, Welded, Low-Pressure Storage Tanks
  • NFPA 22 - Standard for Water Tanks for Private Fire Protection
  • UL-142 - Aboveground Flammable Liquid Tanks

Finite Element Analysis (FEA)

  • Primary focus on static stress analysis


Code Knowledge:

ASME BPVC Section I - Rules for Construction of Power Boilers

ASME BPVC Section VIII, Div. 1 - Rules for Construction of Pressure Vessels

ASME BPVC Section VIII, Div. 2 - Rules for Construction of Pressure Vessels - Alternate Rules

ASME PCC-1 - Guidelines for Pressure Boundary Bolted Flange Joint Assembly

ASME B16 Series

API-510 - Pressure Vessel inspection Code

API-570 - Piping Inspection Code

API-579 - Fitness-For-Service

API-610 - Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries

API-653 - Tank Inspection, Repair, Alteration, and Reconstruction

API-660 - Shell-and-Tube Heat Exchangers

National Board Inspection Code (NBIC)

Tubular Exchanger Manufacturers Association (TEMA)

International Building Code (IBC) - Primarily seismic and wind loading criteria

ASCE 7 - Primarily seismic and wind loading criteria

NFPA 22 - Standard for Water Tanks for Private Fire Protection

NFPA 30 - Flammable and Combustible Liquids Code

AWWA D100 - Welded Carbon Steel Tanks for Water Storage

Software Experience:


Autodesk Inventor

Autodesk FEA - Simulation Mechanical, Nastran In-CAD, Fusion 360


PV Elite


Caesar II


Additional Services