Space radiation and natural radioactivity make application of the modern precise spectrometric equipment impossible without high quality radiation shielding which improves its background performance. This work presents the obtained results of simulation and design of radiation shielding for precise gamma-spectrometric equipment based on semiconductor detectors for nuclear radiation. Special attention is paid to radiation pure lead materials (<50 Bq/kg) and tungsten alloys with nickel and copper linings. Laboratory, industrial, mobile and portable spectrometers developed in SolidWorks software as well as their collimation and shielding systems are described. The background performance of the developed spectrometers with passive shielding are presented, minimal radionuclide activities detected by developed spectrometers are provided.