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Godzilla is helping ITER prepare for tokamak assembly
ITER employees stand by Godzilla, the most powerful commercially available industrial robot available. (Photo: ITER)
Many people are familiar with Godzilla as a giant reptilian monster that emerged from the sea off the coast of Japan, the product of radioactive contamination. These days, there is a new Godzilla, but it has a positive—and entirely fact-based—association with nuclear energy. This one has emerged inside the Tokamak Assembly Preparation Building of ITER in southern France.
Robert J. Borland
Nuclear Science and Engineering | Volume 121 | Number 1 | September 1995 | Pages 162-171
Technical Paper | doi.org/10.13182/NSE95-A24138
Articles are hosted by Taylor and Francis Online.
For most pressurized water reactors, moderator temperature coefficients (MTCs) must be measured at end-of-cycle conditions at power to verify that Technical Specification limits on negative MTC will not be violated. Three techniques for performing these measurements are evaluated, and the relative strengths and weaknesses of each method are discussed. Considering overall accuracy and time required to perform the test, a best method is selected, and its accuracy is compared with previous measurements performed at Davis-Besse Unit 1, thus demonstrating the effectiveness of this technique. In addition, the necessity of attempting to perform this measurement at power at end-of-life conditions is discussed.