The paper deals with measurements of carbon-14 in irradiated nuclear graphite. It suggests approaches to the problem, impart experience in production and calibration of new C-14, reference standards got from irradiated elements (sleeve, block) of the uranium–graphite reactor (UGR) stacks. Reference standards in the form of irradiated graphite were created and certified by the C-14 concentration. The concentration of C-14 in different samples was determined by interlaboratory comparisons. Results of the work proved an opportunity of creating reference materials for the C-14 radionuclide based on irradiated graphite obtained from the graphite elements of the uranium–graphite reactors. C-14 reference standards with different concentrations of interfering Cl-36, Co-60, H-3, Cs-137, Sr-90 and other radionuclides can be used for future development of new methods of determination the C-14 concentration in irradiated graphite and spectrometric equipment calibration.

本文涉及辐照核石墨中碳14的测量。它提出了解决问题的方法，传授了生产和校准新C-14的经验，以及从铀-石墨反应堆（UGR）堆中的辐照元素（套筒，块）获得的参考标准。建立了辐照石墨形式的参考标准，并通过C-14浓度进行了认证。通过实验室间比较确定不同样品中C-14的浓度。这项工作的结果证明是一个机会，可以基于从铀-石墨反应堆的石墨元素获得的辐照石墨，为C-14放射性核素创建参考材料。具有不同浓度的干扰Cl-36，Co-60，H-3，Cs-137，