Reflective Metal Insulation (RMI) and Simulation in SMR Systems
In the nuclear energy sector, safety and efficiency begin with the thermal control of the Reactor Pressure Vessel (RPV). ERATHERM develops high-performance Reflective Metal Insulation (RMI) solutions for Small Modular Reactors (SMRs) and conventional nuclear facilities. Through services ranging from engineering calculations to on-site implementation, we ensure that the immense energy generated within the reactor core remains within safe limits, while preventing thermal deformation of surrounding components.
High-Performance Thermal Insulation of the Reactor Pressure Vessel (RPV): ERATHERM Engineering
The Reactor Pressure Vessel (RPV), the most critical component of Small Modular Reactors (SMRs), is the central structure that houses the nuclear core and manages extreme temperature and pressure conditions. Unlike conventional nuclear power plants, SMR designs generate high power density within much more compact volumes. This makes minimizing heat loss from the RPV surface and protecting adjacent components from thermal loads a vital requirement.
ERATHERM provides world-class Reflective Metal Insulation (RMI) systems for RPV insulation, offering comprehensive services including concept design, simulation, installation, and audit.
Why Is Reflective Metal Insulation (RMI) Preferred for RPV Insulation?
Nuclear safety protocols restrict the use of fibrous (fiber-based) materials that may generate dust or cause radioactive contamination within the reactor core. RMI systems, composed of layered stainless steel or aluminum foils, offer the following advantages:
Prevention of Radiative Heat Transfer:
The multilayer metallic structure reflects thermal radiation, reducing heat loss by more than 90%.
Cleanroom Compatibility:
Does not generate particulates and eliminates the risk of outgassing.
Rapid Intervention and Decontamination:
Thanks to its modular design, RMI systems can be easily removed and reinstalled during periodic inspections (ISI – In-Service Inspection).
Long Service Life:
Resistant to structural degradation under radiation exposure and compatible with operational lifetimes exceeding 60 years.
