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Design Reviews

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Last Updated:
18-jan-06 11:30 CET

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 Tetra can provide independant reviews of designs for the client, assessing the units fitness for its intended purpose and advising on any special operations / maintenance requirements. The following is a typical table of contents from a design review performed for a client. The client was purchasing HRSGs and had proposals from 4 vendors. Tetra was asked to perform a design review for each and make a comparison of their relevant defects / merits.

Tetra had the design details as provided to the client, and understood the client's operating requirements (frequency of cycling expected etc.). In addition, Tetra has in-house experience of the designs from field inspections. This design review then formed a part of the client's own bid evaluation.

Review on a vendor design typically includes:

  • Mechanical Design
    • Tube and Header Assemblies
    • Steam Drums
    • Steal Attemperator
    • Flow Distribution Grid
    • Trim: Drains and Vents
    • Accessibility Issues
    • Emissions Controls
  • Thermal Design
    • Performance Guarantees
    • Expected Superheater and Reheater Performance
    • Stress Analysis
    • Flow Distribution and Circulation
  • Corrosion, Fouling and Water Chemistry
    • Gas-Side Corrosion and Fouling
    • Water-Side Corrosion
    • Water Chemistry Control
  • Cycling Issues
    • Startup and Shutdown
    • Supplemental Firing
    • Structural Damage to Components
  • Quality Control of Fabrication