On February 28, 2017 (82 FR 12142), the Nuclear Regulatory Commission (NRC) published a notice in the federal register withdrawaling Regulatory Guide (RG) 5.18, “Limit of Error Concepts and Principles of Calculation in Nuclear Materials Control.” This RG is being withdrawn because the term “limit of error” is no longer used in the material control and accounting (MC&A) requirements in NRC’s regulations, and therefore the RG 5.18 guidance is no longer needed. The MC&A requirements now include the term “standard error” in place of the term “limit of error.” The “standard error” term is used in evaluating the significance of an inventory difference (ID). The NRC has issued guidance separately for the term “standard error.” The effective date of the withdrawal of RG 5.18 is February 28, 2017.Click on the link below to download the full version:

NRC 02-28-2017 withdrawal RG5.18 limit of error in NucMaterials