The Tennessee Valley Authority is working to determine what caused the structural supports of a refurbished condenser to fail and how best to repair the damage at the newly commissioned Watts Bar 2 nuclear unit on the Tennessee River.
Commercial operation of the long-shuttered second unit at the Tennessee Valley Authority’s Watts Bar nuclear plant in Tennessee got underway earlier this month, the first U.S. nuke reactor to start up since 1996, when a sister 1,150-unit came on line.
The Tennessee Valley Authority on Dec. 13 secured the reactor vessel head after loading 193 nuclear fuel assemblies into the 1,150-MW newly built unit at Watts Bar nuclear generating station in Spring City, Tenn.
The Tennessee Valley Authority this week plans to begin pouring the concrete foundation for a 12,000 sq ft building that the designer is calling a “finger of God build.”The reinforced concrete building is meant to withstand a 10,000-year earthquake. “We hope we don’t see it tested, but if it is we hope it stays,” says Robert Feiel, project engineer for Mesa Associates, Knoxville.The diverse and flexible coping capability building, or FLEX, was developed by the U.S. Nuclear Regulatory Commission from the lessons learned in nuclear plant safety as a result of the Fukushima Daiichi accident in 2011. It provides an
Courtesy MOHR The readout from MOHR Test and Measurement LLC's instrumentation system for spent-fuel pools. Courtesy Westinghouse The layout of Westinghouse's instrumentation system for spent-fuel pools. After the March 2011 Fukushima Daiichi nuclear-plant accident, the U.S. Nuclear Regulatory Commission (NRC) issued an order for nuclear facilities to install reliable, extended-range instrumentation for spent-fuel-pool levels that meets new disaster standards. Last July, the first device was installed, says the device's designer.Two companies recently announced the successful release of a measurement system that meets the new NRC standards, but Westinghouse Electric Co. LLC, Monroeville, Pa., installed the first device in a live
Photo courtesy of TVA Watts Bar plant unit 2, idle since 1988, is set for 2013 completion. In what it says is an effort to improve efficiency and eliminate confusing lines of authority and duplication of effort, the Tennessee Valley Authority has relieved Bechtel Corp., based in San Francisco, of construction-management duties at the $2.5-billion restart of unit 2 at TVA's Watts Bar nuclear powerplant.The federal power producer renegotiated its engineering, procurement and construction contract with Bechtel Power after the project's schedule slipped during the summer, says Terry Johnson, a TVA spokesman. “Fundamentally, we established a level of productivity, and