Providing Engineering & Design/Drafting Services to the Power Industry

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SCR Retrofit Project – Seminole Electric Co-op,Palatka, Fl, USA
IDS - Engineering Subcontractor to Hitachi Power Systems America, Ltd., for the retrofit of Unit 1 and Unit 2 with Selective Catalytic Reduction (SCR) system.  Each Unit is a nominal 650 MW pulverized coal-fired steam generator that were put into service in 1984. 
IDS provided Hitachi with initial Proposal Support, 3-D Plant Layout & Design, Structural & Stress Engineering, Design/Drafting, and Construction Coordination Services for all systems related to IDS’s scope of work for the SCR Retrofit Project

IDS’s Scope of Work included the following systems and components for each unit:

  • SCR Reactor Housing (2)
  • SCR Flue Gas Ducting System
  • Economizer Bypass Ducting
  • SCR Bypass Duct
  • SCR Support Structure Engineering & Design
  • Ammonia Storage and Handling System
  • Ammonia Piping System
  • Catalyst Loading Monorail System
  • Sootblower System
  • Auxiliary Systems (compressed air and dampers)

IDS’s responsibilities included developing the SCR System 3-D Models, General Arrangement drawings, Assembly & Installation Drawings and all Shop Fabrication Detail drawings.

IDS (PE of Record) performed all the required Structural Engineering, Piping Stress Analysis and Code Calculations for all the systems in accordance with the applicable State and Local Building Code requirements, ASME Boiler Codes and Standards including, determining all SCR Foundation Loads, Structural Analysis, Thermal Expansion movements, structural steel & platform loads, and developing all required pipe & duct support design details.

IDS provided Construction Coordination and Support services during the construction phase of the project. IDS personnel assisted Hitachi with plant walkdowns and inspections of mechanical systems and equipment interface, provided field design and engineering recommendations, equipment interference checking, construction deviation (RFI) report coordination and support.