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RELAP5-3D 4.x: Thermal-Hydraulic Nuclear Reactor Analysis, Licensing Opportunity

ENERGY, DEPARTMENT OF

Special Notice · not a solicitation. There is nothing to bid on yet: agencies use this notice type for market research or information. You can respond to get on their radar, but do not budget proposal time for it.

Place of performance: Idaho Falls, ID

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Posted
Apr 21, 2026
Closes
Nov 1, 2026 (in 104 days)

At a glance

This is a government contract opportunity posted by ENERGY, DEPARTMENT OF in the other scientific and technical consulting services category. The deadline is November 1, 2026, 104 days from now. Work is performed in Idaho Falls, ID.

Classification and identifiers

Industry (NAICS)
Other Scientific and Technical Consulting Services (541690)
Product or service (PSC)
Simulation (R412)
Solicitation number
CW-25-06
Contracting office
BATTELLE ENERGY ALLIANCE�DOE CNTR

Who can apply

Work performed in Idaho Falls, ID

About this opportunity

Technology Summary: RELAP5-3D is a fully integrated system-level modeling code for simulating the behavior of nuclear power plants and other complex thermal-fluid systems. Originally developed for light water reactor safety analysis, RELAP5-3D supports detailed modeling of multiphase flow, heat transfer, reactor kinetics, and fluid-structure interactions. It is capable of performing both steady-state and transient analyses in one-, two-, or three-dimensional geometries, making it one of the most versatile nuclear systems analysis tools in use today. Problem Addressed: Designers, operators, and regulators of nuclear systems need validated tools to simulate a wide range of operating and accident scenarios, from routine transients to complex multi-physics events. Many commercial codes lack th...

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