Failed Fuel Location in CANDU-PHW Reactors Using a Feeder Scanning Technique
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A feeder-scanning technique that involves the measurement of ¿-ray fields on individual fuel-channel outlet-feeder pipes has been used successfully to locate failed fuel bundles in shutdown CANDU-PHW reactors at the Pickering G.S. High-resolution spectroscopic measurements show that the excess ¿-ray fields on the outlet feeders of channels containing fuel failures are due primarily to deposited fission products, all with half-lives longer than 56 hours.
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