Case Studies

Biomass Boiler Replacement – Oak Ridge National Laboratory

Project Specifications:

Fosdick & Hilmer was brought on by Johnson Controls, the performance contractor responsible for the project, to provide engineering and design to replace the system within a 12 month design and construction window. Project was completed on schedule in September 2015.

Work was performed on a constrained site and back-up boilers had to maintain steam to the ORNL complex throughout the replacement process.
Key Features
  • Prepared specifications for Owner purchase of large mechanical and electrical equipment.
  • Three 60,000 lb./hr., 250 psig, ultra-low NOx gas and № 2 fuel oil fired packaged steam boilers with economizers and stub stacks.
  • Utilization of an existing condensing heat exchanger to transfer heat from boiler flue gas to RO make-up water
  • Modification of all boiler plant piping systems to serve the new boilers and plant configuration.
  • New CBD and IBD systems.
  • Installation of new switchgear and MCC’s
  • Direct digital control system including integration with combustion control system and burner management systems.
  • Partial demolition and renovation in a central heating plant.