Development of the Savannah River National Laboratory (SRNL) Controlled-Potential Coulometer and its role on International Safeguards:Past, Present, Future

The accurate determination of plutonium (Pu) mass in nuclear materials is essential to nuclear material accountancy and international safeguard programs. Controlled-Potential Coulometry (CPC) is one of the best available analytical methods to perform such measurements. Built and certified by the SRNL, the Controlled Potential Coulometry (CPC) instruments are used to measure the mass fraction of plutonium in solutions and solids. This article present a history of the development of the Savannah River National Laboratory (SRNL) Controlled-Potential Coulometer and its role on International Safeguards.