Nowadays, boron acid is used widely in nuclear power station as the chemical controlling remedy by making use of 10B as the effective neutron absorbent. But the natural element boron includes 10B just 20% (mass fraction), all the rest is 11B which is very weak at absorbing neutron. This paper brings forward a way to improve the effect of chemical controlling remedy on the nuclear power station through taking 10B enriched boron acid as the substitution of the natural one. If this technological measurement is taken, the operation control of nuclear reaction would get at high level. Not only the amount of boron acid waste would drop suddenly, but the amount of all kinds of chemical agents added in the cooling circulation would lower down sharply. So, many complex chemistry problems in the cooling system could be solved, such as erosion of devices, worse quality of wastewater and consume of chemical agents, etc.

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