NuScale Plant Resilience Features
The NuScale Power Module™ (NPM), with its innovative design, has created the new standard for rigorously proven safety through the Triple Crown for Nuclear Plant Safety™. The NuScale small modular reactor (SMR) safely shuts down and self-cools, indefinitely, with no operator action, no AC or DC power, and no additional water – a first for commercial nuclear power. This unparalleled safety is foundational to the new level of plant resilience we offer at NuScale.
Summary of NuScale Plant Resilience Features
|Increased Operational Reliability||75% of reactor scrams are avoided (as compared to operating nuclear plants in 2019) by the innovative features of the NuScale design.|
|Redundant Array of Independent Reactors (RAIR)||The multi-module design of the NuScale power plant allows for staggered refueling. For example, in a 12-module NuScale plant that produces 924 MWe (gross), one 77 MWe module can be refueled while the remaining 11 modules continue to produce 847 MWe (gross).
|Highly Reliable Power for Mission Critical Facilities||A NuScale plant can provide highly reliable power to mission critical micro-grids (154 MWe at 99.95% reliability or 77 MWe at 99.98% reliability over the 60-yr lifetime of the plant).|
|Black-Start Capability||A NuScale Plant can start up from cold conditions without external grid connections using small onsite back-up generators.|
|Island Mode Power – Off Grid Operation||A single module can supply all house loads for the entire plant to maintain power to a mission critical facility without external grid connection; essential to off-grid operation.|
|First Responder Power with 100% Turbine Bypass||On loss of offsite grid, all 12 modules can remain at full power or be ramped down while rejecting 100% steam to its condensers. Able to provide power to the main grid in 77 MWe increments as soon as the grid is restored.|
|Resilience to Natural Events||The reactor modules and fuel pools are located below grade in a Seismic Category 1 Building; Capable of withstanding a Fukushima type seismic event, hurricanes, tornadoes, and floods.|
|Resilience to Aircraft Impact||The reactor building is able to withstand aircraft impact as specified by the NRC aircraft impact rule.|
|Resilience to Catastrophic Loss of Grid and Transportation Infrastructure||A 12 module NuScale plant can provide 154 MWe to a mission critical facility micro-grid for 12 years without new fuel following a catastrophic loss of offsite grid and transportation infrastructure.|
|Cyber Security||NuScale’s proprietary Field Programmable Gate Array-based digital Instrumentation & Control (I&C) provides comprehensive monitoring and control of all plant systems in a single control room without the use of a software operating system so it is not vulnerable to external cyber attacks.|
|Resilience to solar-induced geomagnetic disturbances (GMDs) and electromagnetic pulse (EMP) Events||The NuScale plant has numerous GMD and EMP resilience features including plant safety equipment that is electrically isolated from the main plant distribution system, a reactor vessel shielded by a stainless steel containment vessel, a GMD/EMP hardened concrete reactor building with steel liner and reinforced steel rebar and widespread use of optical fiber links not susceptible to GMD/EMP.|
From First Responder Power to GMD and EMP protection, we’re outpacing the competition and setting the bar high as the only company to offer a commercial nuclear power plant with this level of resilience.