초록 ▼

A gas cooled nuclear reactor is permanently deactivated on occurrence of an emergency by pyrolytic deposition of boron or refractory or stable compounds of boron in the fluid channels of the fuel elements of the reactor. The boron is enriched in boron 10. The deposition takes place in so short a tim

A gas cooled nuclear reactor is permanently deactivated on occurrence of an emergency by pyrolytic deposition of boron or refractory or stable compounds of boron in the fluid channels of the fuel elements of the reactor. The boron is enriched in boron 10. The deposition takes place in so short a time interval as to preclude a major catastrophe by reason of penetration of water into the reactor. Carbon and/or nitrogen-containing boron compounds are injected directly into the reactor or compounds generated by reaction in the working fluid of the reactor between diborane and other boron hydrides with unsaturated compounds, such as acetylene and ammonia flow through the reactor. The compounds are carried by the working fluid through the core and are pyrolized in the heat of the core to produce more stable boron, or boron-carbon and boron-nitrogen compounds or metal borides which adhere to the walls of the channels in the fuel elements, deactivating the core.

대표청구항 ▼

The method of permanently deactivating, in the event of an emergency, a nuclear reactor whose working fluid is a gas and whose fuel is contained in a body having channels for conducting the working fluid, the said method comprising deriving borane from boron trifluoride etherate in which the boron i

The method of permanently deactivating, in the event of an emergency, a nuclear reactor whose working fluid is a gas and whose fuel is contained in a body having channels for conducting the working fluid, the said method comprising deriving borane from boron trifluoride etherate in which the boron is substantially enriched in B10, reacting said borane with one or more of the class consisting of unsaturated hydrocarbons and ammonia to produce respectively one or more of the class consisting of carboranes, alkyl boranes, and alkyl diboranes or boron nitrogen products, (the carboranes, boranes, diboranes, and carbon nitrogen products being all herein referred to as last-named compounds), injecting one or more of said last-named compounds into said working fluid so that said compounds are circulated with said working fluid through said channels of said body, while said compounds are in said body converting said compounds into one or more of the class of materials consisting of boron and the highly-refractory compounds of boron and carbon and/or boron and nitrogen, and adhering said material to the walls of said channels, sufficient compounds being converted to provide sufficient converted material to deactivate said nuclear reactor permanently.