As part of the excitement for my wife and I when traveling on State Route 6 to State Route 53 is seeing the steam coming from Ole’ Besse. (Her official name is Davis-Besse Nuclear Power Plant but we prefer to call her Ole’ Besse.) We know we are in the home stretch of getting to Port Clinton and then jumping aboard the Miller Ferry at Catawba Island.
Anyway, here is the store in reference from http://www.portclintonnewsherald.com/article/20100614/NEWS01/6140308 website.
Modifications to nozzles with small cracks completed; plant to open in July
OAK HARBOR — Davis-Besse Nuclear Power Station officials told the Nuclear Regulatory Commission during a public meeting recently in Port Clinton that modifications to the reactor head control rod drive mechanism nozzles are complete and the plant will be ready to return to safe and reliable operations in July.
Modifications of 24 of the 69 nozzles having small cracks were completed during the past two months using industry-proven methods, including robotic welding. The flaws were identified during a comprehensive inspection of the reactor head as part of a scheduled refueling outage that began Feb. 28.
Davis-Besse has been operating safely and reliably with an unused, replacement reactor head obtained from a canceled plant in Midland, Mich.
An extensive investigation by Davis-Besse plant engineers indicated that elevated reactor head temperatures accelerated the cracking of the nozzle material. This material is known industry-wide to be more susceptible to stress cracking. To slow future nozzle cracking, plant operators will lower the temperature of the reactor core by reconfiguring the fuel assemblies and shortening the next operating cycle.
During the planned 2012 outage, the nozzles will undergo more intensive inspections and testing. A new reactor head, with nozzles made of a different alloy that is less susceptible to cracking, will be installed in 2014.
“Our successful modifications, along with a revised operations plan to minimize stress cracking on these nozzles, will support the continued safe and reliable operation of the plant,” said Barry Allen, Davis-Besse site vice president.
Work activities scheduled to be completed before restart include: reassembly of the reactor head components, reload fuel assemblies and other restart readiness testing.
The NRC Special Inspection Team continues to monitor activities related to the nozzle modifications.
Summary: They finally got her repaired!


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