Word: shutdowns
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Dates: during 1970-1979
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Ever since the near disaster at Pennsylvania's Three Mile Island nuclear plant, the Nuclear Regulatory Commission (NRC) has been debating whether to order the shutdown of other nukes designed and built by the same company, Babcock & Wilcox. Some of the watchdog agency's critics have had no doubts about what the NRC should do: they want a shutdown of all nuclear plants in the U.S. Cooler heads, however, pointed out that most of the plants have relatively good safety records. Besides, any major loss of generating capacity at the onset of the summer months-when electrical consumption...
...heard a complaint from a nuclear analyst for the Tennessee Valley Authority that the reactor's builder, Babcock & Wilcox, had brushed off his warning of a "serious" design problem. Perhaps of greatest immediate import, officials conceded that it may take several more weeks, possibly months, to achieve a "cold shutdown" of the crippled reactor, meaning bringing it down to the minimum possible temperature. Said NRC Operations Boss Harold Denton: "I don't think we ought to commit ourselves to any more timetables?only safety...
...loop and sent pressure inside the reactor soaring. This pressure rise, in turn, caused a relief valve to pop open. It stuck. Pressure then dropped so rapidly that the emergency core cooling system, designed to keep the core from overheating, was automatically activated. That started a reactor "scram" or shutdown. Tons of water flowed into the reactor and out through the open relief valve. At the same time, malfunctioning instruments gave reactor operators misleading readings of reactor pressure, which made them believe that the core of enriched uranium was covered with coolant when it was not. The operators switched...
Technicians yesterday continued to cool the reactor core slowly as they prepared for an eventual cold shutdown. The main coolant water temperatures had fallen to 249 degrees by afternoon, a drop of one degree since Saturday...
...game, keeping the Crimson batsmen off third base until the ninth inning and allowing more than one baserunner in only, two frames. Mason registered one strike out and that on a questionable call. But the sophomore right-hander walked only two and had the defensive support to register a shutdown. "He wasn't spectacular, but he kept the ball low," Bingham said...