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91 After all, a large fast reactor could cost not much less than ￡2000 million to build.

92 The nuclear reactor which propels the submarine was not damaged, he added.

93 Luckily, the reactor was turned back on before the submarine imploded from the pressure of being beyond its maximum design depth.

94 Finally, there would remain a central core containing the reactor building itself.

95 The temperature must be uniform in every area of the reactor.

96 The gas phase is recycled to the reactor inlet to provide a large excess of hydrogen gas in the catalytic reaction zone.

97 During the last 30 years there have been 12 accidents around the world that have caused serious damage to a reactor core.

98 The penalty for using a reactor is that we must carry the weight of the reactor and its associated radiation shielding.

99 After reactor performance improvements of approximately a factor of one trillion, the break-even point is now in sight.

100 The tightening up of safety standards at nuclear power plants inevitably followed the reactor accidents.

101 Neutrons from any nuclear reactor can be used, either intentionally or inadvertently, to make heavy isotopes of almost any element.

102 Recent reactor accidents have caused a marked slowdown in the installation of nuclear power stations.

103 The first is the need to demonstrate operation well above the break-even point in a fusion reactor.

104 Whether this concern can prevent another Chernobyl-type nuclear reactor disaster remains to be seen.

105 Twelve channels of the reactor were refuelled before the outage began and then the fuel route was taken out of service immediately.

106 The largest fast breeder reactor in the world is the Superphenix plant at Creys-Malville on the French/Swiss border.

107 Inside the plant, levels of radiation in the abandoned reactor building rose to many times the lethal level.

108 The plant affected, a 500,000 kilowatt pressurized light water reactor, began operation in 1972.

109 The nuclear accident at Chernobyl affected this country even though we are hundreds of miles from the reactor.

110 Millstone has removed all the radioactive fuel in the reactor to permit repairs.

111 The reactor is on a list of more than 100 possible terror attack scenarios for which security forces have been planning.

112 Objectors at the Sizewell pressurised water reactor inquiry will make this very point.

113 Manufacture is now proceeding and the equipment will be ready for installation on Reactor 2 in May 1993.

114 That would prompt a costly cleanup and incalculable delay in restarting the reactor.

115 To protect power station workers from this invisible threat the reactor core has to be encased behind many metres of thick concrete.

116 Radioactivity is induced in the metallic containment vessel that surrounds a reactor core by neutrons that escape from the core.

117 The second incident occurred when Reactor 3 shut down automatically on November 15.

118 Uranium prices had slumped. New reactor orders were virtually non-existent.

119 This was a crude nuclear reactor whose job was simply to produce plutonium for the manufacture of atomic bombs.

120 The reactor is cased in several feet of metal and concrete.