An emergency shut-down system for a nuclear reactor comprises means for inserting a shutdown material into the reactor core through its bottom face, the material when inserted being located in the core in at least one upright column and being retained in the core, once inserted, by material ...
A pneumatic safety system for the emergency shut down of nuclear reactors. The system is activated by the superceeding of a critical temperature and is passive or self-acting. A highly pressurised container of neutron absorbing gas (e.g. 3He) is positioned above the reactor core and linked ...
关键词: n78720* --reactor components, fuels & accessories--control elements & systems control rod drives design hydraulics reactor shutdown reactors reactor control elements/drives for emergency shutdown, design characteristics of hydraulic 被引量: 9 ...
"Therefore, a decision was made to shut down power unit No. 6 and transfer it to the safest state — cold shutdown," the company said in astatement. Energoatom said the risk remains high that outside power is cut again, in which case the plant would have to fire up...
Device for the emergency removal of the heat dissipated by a fast breeder nuclear reactor when shut down, comprising a liquid-liquid heat exchanger immersed in the vessel of the reactor and a liquid-air exchanger for the cooling of the s... B Cornu,R Lion - US 被引量: 9发表: 1986年 ...
At the Shika power plant, the spillovers of cooling water led to an emergency shutdown of cooling pumps. Hokuriku Electric Power Company, the operator of the Shika plant, initially said that there were no changes to water intake in the nuclear power plant, but later acknowledged that there is...
U.S. Nuclear Reactor Information Find a U.S. Nuclear Reactor Location The Nuclear Regulatory Commission has a proposed 20-mile radius (40 miles diameter) Emergency Planning Zone (EPZ) – an area where states may elect to distribute just a few tablets ofpotassium iodideto residents living near...
摘要: A shutdown system is described for a nuclear reactor wherein a gate, which allows poison to pass to the reactor core, is allowed to move to an open position upon the severing of a fuse link by electric current passed therethrough....
As mentioned above, the present hydraulic control unit may be used to shut down a nuclear reactor during an emergency or for a planned outage. Referring back to FIGS. 2-3, a method of shutting down a nuclear reactor may include compressing a scram gas208that is in fluid communication with...
Method for determining and evaluating the emergency shutdown margin of a pressurised water nuclear reactor, characterised in that consists in calculating a shutdown margin by the application of the general formula: Mar = DELTA Pg + DELTA Pp - DELTA Pr, in which Mar is the required shutdown ma...