PROBLEM TO BE SOLVED: To utilize the performance of a radioactivity measurement device and enable quick verification of the capability of measurement of a radiation dose in the state of securing the normal accuracy of the radioactivity measurement device.SOLUTION: A simulation food radiation source of a container-accommodating form is used, and a radiation dose from the simulation food radiation source is measured, and obtained, by a radiation measurement instrument before measuring a radiation dose of a food using the radiation measurement instrument. The simulation food radiation source is constituted by an incorporated structure member produced by mixing an organic or inorganic material with a plant or/and soil containing radioactive substances (including natural radioactive substances) resulting from fallout of radioactive substances caused by the nuclear plant accident, or constituted by a material formed by mixing the incorporated structure member with a hardening agent. The simulation food radiation source has a solid or liquid form that is formed in simulation of a food to be measured with the radiation measurement instrument, and is contained in the simulation food radiation source of the container-accommodating form.COPYRIGHT: (C)2014,JPO&INPIT【課題】放射能測定装置の性能を生かし、当該放射能測定装置が正常な精度を確保した状態で放射能線量の測定がなされ得ることを迅速に検証できるようにする。【解決手段】原発事故由来による放射性物質の降下で放射性物質(天然放射性物質を含む。)が含有された植物あるいは/および土壌を有機材質あるいは無機材質と混合することで製作された内蔵構成材と、または内蔵構成材および硬化剤とを混合することで形成された材料で構成され、当該放射能測定器で測定する食品の形状に模した、固形状もしくは流動体を内蔵する容器収納形状の模擬食品放射線源が用いられ、該模擬食品放射線源による放射線量が、前記放射能測定器によって当該食品についての放射線量を測定する前に当該放射能測定器で計測され、取得される。【選択図】図4
