United States Nuclear Regulatory Commission - Protecting People and the Environment

Generic Communications Regarding Radiation Protection for New Reactors

The U.S. Nuclear Regulatory Commission (NRC) issues generic communications when issues arise that are safety-significant, require technical resolution, and might suggest safety concerns for multiple licensees, manufacturers, suppliers, service groups, or regulatory organizations. For generic communications regarding radiation protection for new reactors, see the following categories on this page:

IE Bulletins

Bulletins (1) request licensee actions and/or information to address significant issues regarding matters of safety, security, safeguards, or environmental significance that have great urgency, and (2) require a written response.

Document Number Description
80-10 Contamination of Nonradioactive System and Resulting Potential for Unmonitored, Uncontrolled Release of Radioactivity to Environment
80-05 Vacuum Condition Resulting in Damage to Chemical Volume Control System (CVCS) Holdup Tanks (Sometimes Called "Clean Waste Receiver Tanks")
79-19 Packaging of Low-Level Radioactive Waste for Transport and Burial

To top of page


Circulars transmit information to licensees or permit holders when (1) the information is of safety, safeguards, or environmental interest, (2) the NRC wishes to disseminate the information within 30 days, and (3) no reply is necessary in order for NRC to assess the significance of the matter.

Document Number Description
81-09 Containment Effluent Water that Bypasses Radioactivity Monitor, July 10, 1981
80-18 10 CFR 50.59 Safety Evaluations for Changes to Radioactive Waste Treatment Systems, August 22, 1980, implemented using RG 1.187
79-21 Prevention of Unplanned Releases of Radioactivity, October 17, 1979
77-14 Separation of Contaminated Water Systems from Uncontaminated Plant Systems, November 22, 1977
77-10 Vacuum Conditions Resulting in Damage to Liquid Process Tanks, July 15, 1977

To top of page

Generic Letters

Generic letters (1) request licensee actions and/or information to address issues regarding emergent or routine matters of safety, security, safeguards, or environmental significance, and (2) require a written response.

Document Number Description
99-02 Laboratory Testing of Nuclear-Grade Activated Charcoal
89-01 Implementation of Programmatic and Procedural Controls for Radiological Effluent Technical Specifications
85-14 Commercial Storage at Power Reactor Sites of Low Level Radioactive Waste Not Generated by The Utility
81-39 NRC Volume Reduction Policy
81-38 Storage of Low Level Radioactive Wastes at Power Reactor Sites
80-51 On-Site Storage of Low-Level Waste
80-09 Low Level Radioactive Waste Disposal

To top of page

Information Notices

Information notices communicate operating or analytical experience to the nuclear industry. Information notices may also communicate the results of recently completed research. The industry is expected to review the information for applicability and consider appropriate actions to avoid similar problems.

Document Number Description
14-07 Degradation of Leak Chase Channel Systems for Floor Welds of Metal Containment Shell and Concrete Containment Metallic Liner
14-04 Potential for Teflon® Material Degradation in Containment Penetrations, Mechanical Seals and Other Components
13-18 Refueling Water Storage Tank Degradation
13-13 Deficiencies with Effluent Radiation Monitoring System Instrumentation
13-12 Improperly Sloped Instrument Sensing Lines
13-01 Emergency Action Level Thresholds Outside the Range of Radiation Monitors
12-12 HVAC Design Control Issues Challenge Safety System Function
12-05 Abnormal Releases of Radioactive Water Potentially Resulting in Groundwater Contamination
10-17 Common Cause Failure of Boiling-Water Reactor Recirculation Pumps with Variable Speed Drives
06-13 Ground-Water Contamination Due to Undetected Leakage of Radioactive Water
05-24 Nonconservatism in Leakage Detection Sensitivity
04-05 Spent Fuel Pool Leakage to Onsite Groundwater
03-08 Potential Flooding Through Unsealed Concrete Floor Cracks
99-01 Deterioration of High-Efficiency Particulate Air Filters in a Pressurized Water Reactor Containment Fan Cooler Unit
93-39 Radiation Beams From Power Reactor Biological Shields
93-30 NRC Requirements for Evaluation of Wipe Test Results; Calibration of Count Rate Survey Instruments
91-40 Contamination of Nonradioactive System and Resulting Possibility for Unmonitored, Uncontrolled Release to Environment
90-50 Minimization of Methane Gas in Plant Systems and Radwaste Shipping Containers
90-31 Update on Waste Form and High Integrity Container Topical Report Review Status, Identification of Problems with Cement Solidification, and Reporting of Waste Mishaps
89-13 Alternate Waste Management Procedures in Case of Denial of Access to Low-Level Waste Disposal Sites
88-08 Chemical Reactions with Radioactive Waste Solidification Agents
87-07 Quality Control of Onsite Dewatering/Solidification Operations by Outside Contractors
86-43 Problems with Silver Zeolite Sampling of Airborne Radioiodine
86-42 Improper Maintenance of Radiation Monitoring Systems
86-20 Low-Level Radioactive Waste Scaling Factors, 10 CFR Part 61
85-92 Surveys of Wastes Before Disposal from Nuclear Reactor Facilities
84-72 Clarification of Conditions for Waste Shipments Subject To Hydrogen Gas Generation
83-14 Dewatered Spent Ion Exchange Resin Susceptibility to Exothermic Chemical Reaction
82-49 Correction for Sample Conditions for Air and Gas Monitoring
82-43 Deficiencies in LWR Air Filtration/Ventilation Systems
79-09 Spill of Radioactively Contaminated Resin
79-07 Rupture of Radwaste Tanks

To top of page

Regulatory Issue Summaries

Regulatory issue summaries are used to (1) communicate and clarify NRC technical or policy positions on regulatory matters that have not been communicated to or are not broadly understood by the nuclear industry, (2) inform the nuclear industry of opportunities for regulatory relief, (3) communicate previous NRC endorsement of industry guidance on technical or regulatory matters, (4) provide guidance to applicants and licensees on the scope and detail of information that should be provided in licensing applications to facilitate NRC review, and (5) request the voluntary participation of the nuclear industry in NRC-sponsored pilot programs or the voluntary submittal of information which will assist the NRC in the performance of its functions.

Document Number Description
2015-02 Reporting of H-3, C-14, Tc-99, and I-129 on the Uniform Waste Manifest
2011-09 Available Resources Associated with Extended Storage of Low-Level Radioactive Waste
2009-02 Use of Containment Atmosphere Gaseous Radioactivity Monitors as Reactor Coolant System Leakage Detection Equipment at Nuclear Power Reactors, January 29, 2009, with Revision 1 issued, May 8, 2009
2008-32 Interim Low Level Radioactive Waste Storage at Reactor Sites
2008-03 Return/Re-use of Previously Discharged Radioactive Effluents
2007-20 Implementation of Primary-to-Secondary Leakage Performance Criteria, August 23, 2007
2004-17 Revised Decay-In-Storage Provisions for the Storage of Radioactive Waste Containing Byproduct Material

To top of page

Page Last Reviewed/Updated Monday, October 19, 2015