UHI (Upper Head Injection) Ultra High Risk and a Fantastic Coincidence

This is a brief logging of three documents. I've discussed UHI at least twice before. It will become a very lengthy package. For now here is a nutshell that documents a fantastic coincidence. I submitted my memo on October 3, 1984. In response, EPRI contacted Duke Power and Mr. Sugnet of EPRI briefly documented his discussions on October 25, 1984. Then it just so happened that on October 31, 1984, Duke found four out of four level detectors reverse connected at McGuire Unit 1. The NRC publicly reported this on November 2, 1984.

Indeed, this is a strange coincidence since the detectors had been reverse connected for a very long time. The NRC fined Duke $50,000. Duke argued that they should not be fined since they had discovered the fault independently. The NRC kept the fine at the outrageously low level of $50,000 because Duke had found and reported the deficiency without NRC involvement.

Here are the documents. Click on the document to enlarge and then click on your back arrow to get to the next document.