Mini-SLAR Delivery System

Abstract

In the Spring of 1993, a need to complete Spacer Location and Repositioning (SLAR) on the Bruce 'A', Unit 1 Reactor was identified. An alternate SLAR delivery system was required due to conversion constraints that prevented the existing Bruce SLAR System from being used in Unit 1. A Portable SLAR Delivery System called MINI- SLAR Delivery System was developed, designed and fabricated in a 14 month period, then used to successfully SLAR 109 channels. The system is a portable remotely operated Nuclear Class I registered fitting that is independent of the Fuelling Machine, allowing the station to continue normal Fuelling and Maintenance activities. It is designed to a Level "D" faulted condition of HPECI Pressure thus minimizing PHT Heat Sink configuration requirements and minimizing outage set-up times. The system is based on a modular design allowing for easy fabrication, assembly and repair. It consists of a Snout Assembly, a Closure Plug Assembly, Shield Plug Assembly, SLAR Ram assembly, Work Table Assembly and Control Panel. Controls are through a Programmable Logic Controller with software tested and certified to a Software Quality Assurance of Level III.