The Transient Reactor Test (TREAT) Facility is a nuclear testing reactor that is currently being restarted by the Idaho National Laboratory (INL) contractor. Under numerous blanket master contracts with BEA, WALSH has delivered over 60 task-based engineering, design, and drafting projects in support of the restart effort. The multi-disciplined engineering support completed within the past five years includes:

• A structural analysis of the existing reactor building was performed to determine the structural capacity for the re-activation of the reactor. The analysis included reviewing existing plans, models, loads and load combinations, and the capacity of critical framing members, and performing independent structural calculations.
• Field surveying, geotechnical, and civil engineering services were provided to design replacement of the existing roadways and parking areas, together with providing an additional parking area and roadway. Also, site grading and drainage design was performed to ensure proper management of the storm water around TREAT facilities.
• The existing TREAT control building was remodeled. The architectural design included upgrading accessibility features to meet current code requirements.
• Multiple Heating, Ventilation, and Air-Conditioning (HVAC) units have been replaced, including units in the reactor building instrumentation and controls room and electricians shop, and units in the reactor building instrumentation and controls room and electricians shop, and units in the reactor control building.
• A design for a replacement fire water line was prepared to correct inadequate flows. The design included abandoning the existing fire water pipe and installing over 9,000 linear feet of 14-inch diameter fire water loop to deliver the required flows and pressures.
• Prepared a conceptual design for a medium activity shielded cell system to support TREAT experiments. The CD design was based on the shielded cell/glovebox system like the Thermal Properties Cell in IMCL. The design addressed experiment handling needs for TREAT experiment assembly, disassembly, fabrication and examinations.
• Developed fuel handling cask storage stand load spreader plate and analyzed storage pit covers for load capacity, and fuel storage decks for permissible loading.