May-June 2019 NPJ

Nuclear Plant Journal, May-June 2019 NuclearPlantJournal.com 37 prior to the scheduled refueling outage, an alternative to the traditional repair method was needed to minimize the impact to outage dose, schedule, and cost. The installation of the innovative Compressible Thermal Sleeve resulted in a dose savings of more than 20 rem and a cost savings of over $28 million, when compared to the traditional repair method. The Compressible Thermal Sleeve represented a step change in the industry’s ability to respond to thermal sleeve flange wear in a safe, cost-effective manner. The Compressible Thermal Sleeve replacement drops the repair time from weeks to hours, and eliminates the need to breach and re-establish the reactor primary pressure boundary. ET Automated Analysis for BOP Heat Exchangers Award Type: Westinghouse Vendor TIP Award. Company: Arizona Public Service, Palo Verde Generating Station. Team: Douglas Hansen, Rachael Harley, Joe Jacobs, Kevin Newell and Ken Schrecker, Arizona Public Service. Arizona Public Service, Palo Verde Generating Station Program Engineering along with Zetec personnel teamed to utilize a sophisticated eddy current automated analysis process for a variety of balance of plant heat exchangers. The software utilizes algorithms that allow detection and classification of degradation, and also provide a path for historical comparison. As such, this innovation brings an increased consistency to the overall eddy current analysis process. The process not only supports detailed plugging and repair decisions, but also supports the goal of not missing indications that may lead to unit down power operations. Modified SofTrac Crawler Award Type: NEI TIP Award. Company: Tennessee Valley Authority, Browns Ferry Nuclear Plant. Team: Ashley Michael, Ron Sheridan, Billy Campbell, Jud Parker, Huff Peeler, Danny Lodge and Alex Jackson, Tennessee Valley Authority. A team of TennesseeValleyAuthority (TVA) and Barnhart Crane and Rigging employees at Browns Ferry Nuclear Plant combined two remote-controlled, low-profile crawler vehicles (SofTrac Crawler systems) to transport 35.5 tons of feedwater heater tube bundles at 6 feet long and 7 feet in diameter during a recent refueling outage. The remote-controlled crawlers were operated independently allowing for the freedom to transport the tube bundles around 90-degree corners to a position outside where it could be lifted by crane, preventing the need for extensive building modifications from more traditional moving methods, such as tracks or rails. By using this innovative method, it also provided cost- and schedule-savings as well as improved safety. First-of-a-Kind Upgrade of Safety- Related Buried Piping Using Carbon Fiber Reinforced Polymers (CFRP) Award Type: NEI TIP Award. Company: Dominion Energy Surry Power Station. Team: Janean Sealey, Darryl Godwin, Anna Pridmore, Leo Nadeau and Rasko Ojdrovic, Dominion Energy. Compressible Thermal Sleeve in Loading Fixture. Dashboard Operation. Historical Data Comparison. Using Remote-Controlled Crawlers for Massive Moves. (Continued on page 38) http://digitaleditions.nuclearplantjournal.com