如果按照剂量率取200mRem/h(2mSv/h)时即等效球壳的屏蔽厚度依次为钢(20cm)、水(10cm)、铸钢(47cm)和水(14cm),这里忽略了空气层的屏蔽,其衰减取2×106倍。作为参考屏蔽设计方案
If the dose rate is taken as 200mRem/h (2mSv/h), the equivalent shielding thickness of the spherical shell is sequentially steel (20cm), water (10cm), cast steel (47cm), and water (14cm). The shielding of the air layer is ignored here, and its attenuation is taken as 2 × 106 times. As a reference shielding design scheme