Even with the two Spent Fuel Pool (SFP) reracking projects to expand the capacity to 4398 cells, Kuosheng Unit 1 had practically no unfilled SFP cells such that operation was prohibited from November 30, 2016. After a careful evaluation of the possible measures to restore refueling ability, the Taiwan Power Company has elected to install four 11?10 storage racks within the Cask Loading Pool. The additional 440 cells could allow operation for two more fuel cycles, about 3 more years. All the aspects (criticality, thermal-hydraulic, structure, radiological, and accident) specified in the Republic of China Atomic Energy Council’s review guidance are evaluated. Additionally, distinctive subjects such as transportation, installation, post-Fukushima safety enhancement measures, and emergency/recovery plans are thoroughly addressed. The Safety Analysis Report (SAR) was submitted in August 2016. As the safety issues were thoroughly examined, many unique and significant issues worth exploring have been identified and additional analyses requested. After all the issues resolved, the SAR was approved in April 2017. For Unit 1, rack installation was completed and the unit was back online in June 2017. The timely and successful implementation of this contingency project is extremely critical for achieving a stable power supply in Taiwan.