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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
Type One Energy, TVA ink LOI in development of fusion power in Tennessee
The Tennessee Valley Authority has issued a letter of intent to fusion energy start-up Type One Energy regarding the utility’s interest in the potential deployment of Type One Energy’s fusion power plant technology at TVA’s former Bull Run fossil plant site once it is commercially ready.
Gregory L. Calhoun
Nuclear Technology | Volume 87 | Number 3 | November 1989 | Pages 587-594
Technical Paper | TMI-2: Remote Technology and Engineering / Nuclear Safety | doi.org/10.13182/NT89-A27710
Articles are hosted by Taylor and Francis Online.
The basic defueling system used at Three Mile Island Unit 2 consisted of (a) a shielded work platform mounted on the reactor vessel, (b) cylindrical canisters suspended from the work platform with intravessel debris loading, (c) dry cask handling of the canisters inside containment from the vessel to the fuel transfer system, (d) wet transfer of canisters from inside containment to the spent-fuel pit, and (e) wet storage in the spent-fuel pit until processed for shipping. Requirements for removing core debris changed substantially as knowledge of actual core conditions was attained, thwarting efforts to anticipate tooling demands. Logistics, operator proficiency, and tooling reliability determined overall productivity. Poor underwater visibility dramatically reduced productivity. Operator training and tool testing on full-scale mock-ups were essential to effective operations. The experience gained in designing and using the various tools is summarized as lessons learned.