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Materials and Plant Protection (Division 5): Regulatory Guides 5.21 - 5.40
This page lists the number, title, publication date, and revisions for each regulatory guide in Division 5, "Materials and Plant Protection," with references to draft guides and related documents (where applicable).
See also Draft Regulatory Guides for Public Comment.
See NRC Regulatory Guides for more general information.
Regulatory Guides are reviewed about every 10 years, although a guide may be reviewed more frequently if the staff believes an emerging issue affects the guide. The NRC began these reviews in 2010, and began posting the results of its reviews on this site in 2013. The review dates are hyperlinked to the review memorandum, which provide useful information about the status and any known issues with the associated regulatory guide.
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Guide | Title | Revision | Issue | Additional Information |
|---|---|---|---|---|
5.21 | Nondestructive Uranium-235 Enrichment Assay by Gamma Ray Spectrometry | 1 | Reviewed in 2016 – Issues identified for future consideration | |
0 | ||||
5.22 | Assessment of the Assumption of Normality (Employing Individual Observed Values) | W | ||
0 | ||||
5.23 | In Situ Assay of Plutonium Residual Holdup | 1 | Reviewed in 2016 – Issues identified for future consideration | |
0 | ||||
5.24 | Analysis and Use of Process Data for the Protection of Special Nuclear Material | W | ||
0 | ||||
5.25 | Design Considerations for Minimizing Residual Holdup of Special Nuclear Material in Equipment for Wet Process Operations | 0 | Reviewed in 2016 – Issues identified for future consideration | |
5.26 | Selection of Material Balance Areas and Item Control Areas | 1 | Reviewed in 2015 – Issues identified for future consideration | |
0 | ||||
5.27 | Special Nuclear Material Doorway Monitors | 1 | ||
0 | ||||
5.28 | Evaluation of Shipper-Receiver Differences in the Transfer of Special Nuclear Materials | W | ||
0 | ||||
5.29 | Nuclear Material Control systems for Nuclear Power Plants | 2 | ||
W | ||||
1 | ||||
5.30 | Materials Protection Contingency Measures for Uranium and Plutonium Fuel Manufacturing Plants | W | ||
0 | ||||
5.31 | Specially Designed Vehicle with Armed Guards for Road Shipment of Special Nuclear Material | 1 | Reviewed in 2016 – Issues identified for future consideration | |
0 | ||||
5.32 | Communication with Transport Vehicles | W | ||
1 | ||||
0 | ||||
5.33 | Statistical Evaluation of Material Unaccounted For | W | ||
0 | ||||
5.34 | Nondestructive Assay for Plutonium in Scrap Material by Spontaneous Fission Detection | 1 | Reviewed in 2016 – Issues identified for future consideration | |
0 | ||||
5.35 | Calorimetric Assay of Plutonium | W | ||
0 | ||||
5.36 | Recommended Practice for Dealing with Outlying Observations | W | ||
0 | ||||
5.37 | In Situ Assay of Enriched Uranium Residual Holdup | 1 | Reviewed in 2016 – Issues identified for future consideration | |
0 | ||||
5.38 | Nondestructive Assay of High-Enrichment Uranium Fuel Plates by Gamma Ray Spectrometry | 1 | Reviewed in 2016 – Issues identified for future consideration | |
0 | ||||
5.39 | General Methods for the Analysis of Uranyl Nitrate Solutions for Assay, Isotopic Distribution, and Impurity Determinations | 0 | Reviewed in 2016 – Issues identified for future consideration | |
5.40 | Methods for the Accountability of Plutonium Dioxide Powder | W | ||
0 |
Page Last Reviewed/Updated Monday, September 22, 2025
Page Last Reviewed/Updated Monday, September 22, 2025