The Need for Change the Legacy of Tmi Report of the Presidents Commission On
The Need for Change the Legacy of Tmi Report of the Presidents Commission On
United States Presidents Commission On the Accid
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"He said he had done calculations, " Mattson said in his deposition. "He was concerned with the answers. "107/ Mattson is director of the Division of Systems Safety within the Office of Nuclear Reactor Regulation (NRR), which is headed by Denton, and had spent part of Thursday and Friday working on how to remove a gas bubble from the reactor. Following Denton 1 s departure for TMI, Mattson served variously as NRR's representative or deputy representative at the Incident Response Center. Hydroge...n had been produced in the reactor as a result of a high-temperature reaction that occurred between hot steam and the zirconium cladding of the fuel rods. For this hydrogen to explode or burn -- a less dangerous possibility -- enough oxygen would have to enter the system to form an explosive mixture. There were fears this would happen as the result of radiolysis. In this process, radiation breaks apart water molecules, which contain hydrogen and oxygen. Two NRC teams worked throughout the weekend on the problem, and both sought help from laboratories and scientists outside the NRC.
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