EXPERIENCE WITH PARTIAL DECOMMISSIONING OF PARR-1 (5 MW) FOR CORE CONVERSION AND POWER UPGRADE

摘要

The Pakistan Research Reactor-1 (PARR-1) was operated at a power level of 5 MW for about 25 years using high enriched uranium (HEU). It was planned to convert the reactor core from HEU to low enriched uranium (LEU) fuel, installation of stainless steel lining on interior of the reactor pool and power upgradation from 5 MW to 10 MW. For this purpose, the reactor was partially decommissioned in 1990. After completing all the requirements, the reactor was re-commissioned with LEU fuel in October 1991.