United States Nuclear Regulatory Commission - Protecting People and the Environment

Super-Safe, Small and Simple (4S)

Designer:   Toshiba Corporation

Super-Safe, Small and Simple (4S)
Reactor Power:   30 MWt

Electrical Output:   10 MWe

Outlet Conditions:   510°C

Coolant:   Liquid-metal (sodium)

Fuel Design:   18 hexagonal fuel assemblies - U-10%Zr Alloy with 19.9% enrichment

Refueling:   30 years

Letter of Intent:   Updated March 15, 2011

Licensing Plan:   Design Approval

Expected Submittal:   Second quarter 2012

Design Information:   Small, sodium-cooled, underground reactor

Status/Other Info:   Working with the city of Galena, AK as a potential COL partner.

Website:   N/A
Page Last Reviewed/Updated Tuesday, June 14, 2011