OPTIMIZATION CALCULATION OF THE MULTIPLET SHIELDING OF THE STORAGE WELL FOR A3×105 CURIE 60Co SOURCE
LI XINGHONG;CHEN JUNZHEN;SUN JIANYONG(Department of Technical Physics Peking University)
This paper presents an optimization calculation method of multiplet shielding for the γ-ray linear source in whieh the accumulation factor are expressed by the Broder formula .A rectangulargrid source was composed of thirty 60Co γ-ray linear sources,every one of which is 1×104 curie.When the rectangular grid source is in the storage well and shielded by water, lead concretes inproper order,the optimiyation lead shielding thichness of the well cover and the well wall havebeen calculated under a given condition,thus determining the optimized configuratim of thesource storage well.The dose equivalent rate in any area on the storage well will be lower then 3.14 × 10-3 mSv/h under the optimization condition. during inspection and repair of the main wellthe workers exposed to radiation fields actually incur effective dose equivalent no more then 0.07mSv.
【CateGory Index】： TL531.4