Idaho National Laboratory, Integrated Waste Treatment Unit (IWTU)

The IWTU facility includes a 40,000 sq ft steel braced-frame structure that houses off-gas, mechanical, and processing areas, and also supports a 20-ton bridge crane. A high-hazard reinforced concrete structure with thick walls supported on an extended mat slab sits below the crane and contains process and packaging cells (PPC) and a loading vault. A transfer bell crane travels between the PPC and a separate cask loading area. For this project, SGH completed the following:

• Analyzed and designed the following:
  • PPC facility in accordance with DOE-STD-1020-02 for Performance Category 3 (PC-3) requirements for seismic soil-structure interaction behavior and nonseismic dead, live, and temperature loadings
  • Foundation and structure of the steel building for enhanced code requirements to prevent collapse onto the PPC
  • Runway for the 20-ton bridge crane
• Foundation and framing for the transfer bell crane
• Reviewed the structural design of the bridge crane for compliance with ASME NOG-1 codes
• Specified geotechnical requirements and reviewed geotechnical reports
• Performed structure-soil-structure interaction analysis to generate design input and in-structure response spectra
• Support to develop concrete mix design and testing plan
• Provided construction support and administration services
• Presented and defended the project to the Defense Nuclear Facility Safety Board (DNFSB), the DOE
• Environmental Management headquarters, an owner-established Blue Ribbon Panel, and peer reviewers