Nuclear material balance method, device and equipment and computer storage medium

The embodiment of the invention provides a nuclear material balance method, device and equipment and a computer storage medium. The nuclear material balance method of the pebble-bed high-temperature gas cooled reactor comprises the following steps: acquiring physical inventory data of nuclear materials in each nuclear material balance area by utilizing a fuel ball counter, wherein the fuel ball counter is arranged at a target inventory measurement point in a nuclear material balance area; determining the burnup of the nuclear material based on the physical inventory data and the reactor core integral power of the pebble-bed high-temperature gas cooled reactor; determining the target nuclide content in the nuclear material based on the burn-up of the nuclear material and a preset mapping relationship, wherein the preset mapping relationship is a mapping relationship between the burn-up of the nuclear material and the target nuclide content; obtaining the initial stock and the final stock of the nuclear materia