§72.75. Reporting requirements for specific events and conditions.
10 C.F.R. § 72.75
Emergency notifications— Each licensee shall notify the NRC Headquarters Operations Center upon the declaration of an emergency as specified in the licensee's approved emergency plan addressed in § 72.32. The licensee shall notify the NRC immediately after notification of the appropriate State or local agencies, but not later than one hour after the time the licensee declares an emergency.
Non-emergency notifications— Four-hour reports. Each licensee shall notify the NRC as soon as possible but not later than four hours after the discovery of any of the following events or conditions involving spent fuel, HLW, or reactor-related GTCC waste:
An action taken in an emergency that departs from a condition or a technical specification contained in a license or certificate of compliance issued under this part when the action is immediately needed to protect the public health and safety, and no action consistent with license or certificate of compliance conditions or technical specifications that can provide adequate or equivalent protection is immediately apparent.
Any event or situation related to the health and safety of the public or onsite personnel, or protection of the environment, for which a news release is planned or notification to other Government agencies has been or will be made. Such an event may include an onsite fatality or inadvertent release of radioactively contaminated materials.
Non-emergency notifications— Eight-hour reports. Each licensee shall notify the NRC as soon as possible but not later than eight hours after the discovery of any of the following events or conditions involving spent fuel, HLW, or reactor-related GTCC waste:
A defect in any spent fuel, HLW, or reactor-related GTCC waste storage structure, system, or component that is important to safety.
A significant reduction in the effectiveness of any spent fuel, HLW, or reactor-related GTCC waste storage confinement system during use.
Any event requiring the transport of a radioactively contaminated person to an offsite medical facility for treatment.
Non-emergency notifications— 24-hour reports. Each licensee shall notify the NRC within 24 hours after the discovery of any of the following events involving spent fuel, HLW, or reactor-related GTCC waste:
An event in which important to safety equipment is disabled or fails to function as designed when—
The equipment is required by regulation, license condition, or certificate of compliance to be available and operable to prevent releases that could exceed regulatory limits, to prevent exposures to radiation or radioactive materials that could exceed regulatory limits, or to mitigate the consequences of an accident; and
No redundant equipment was available and operable to perform the required safety function.
For notifications made under this paragraph, the licensee may delay the notification to the NRC if the end of the 24-hour period occurs outside of the NRC's normal working day (i.e., 7:30 a.m. to 5:00 p.m. Eastern time), on a weekend, or a Federal holiday. In these cases, the licensee shall notify the NRC before 8:00 a.m. Eastern time on the next working day.
Initial notification— Reports made by licensees in response to the requirements of this section must be made as follows:
Licensees shall make reports required by paragraphs (a), (b), (c), or (d) of this section by telephone to the NRC Headquarters Operations Center at the numbers specified in appendix A to part 73 of this chapter. 1
When making a report under paragraphs (a), (b), (c), or (d) of this section, the licensee shall identify:
The Emergency Class declared; or
Paragraph (b), “four-hour reports,” paragraph (c), “eight-hour reports,” or paragraph (d), “24-hour reports,” as the paragraph of this section requiring notification of the non-emergency event.
To the extent that the information is available at the time of notification, the information provided in these reports must include:
The caller's name and call back telephone number;
A description of the event, including date and time;
The exact location of the event;
The quantities and chemical and physical forms of the spent fuel, HLW, or reactor-related GTCC waste involved in the event; and
Any personnel radiation exposure data.
Follow-up notification— With respect to the telephone notifications made under paragraphs (a), (b), (c) or (d) of this section, in addition to making the required initial notification, each licensee shall during the course of the event:
Immediately report any further degradation in the level of safety of the ISFSI or MRS or other worsening conditions, including those that require the declaration of any of the Emergency Classes, if such a declaration has not been previously made; or any change from one Emergency Class to another; or a termination of the Emergency Class.
Immediately report the results of ensuing evaluations or assessments of ISFSI or MRS conditions; the effectiveness of response or protective measures taken; and information related to ISFSI or MRS behavior that is not understood.
Maintain an open, continuous communication channel with the NRC Headquarters Operations Center upon request by the NRC.
Preparation and submission of written reports. Each licensee who makes an initial notification required by paragraphs (b)(1), (c)(1), (c)(2), or (d)(1) of this section shall also submit a written follow-up report to the Commission within 60 days of the initial notification. Written reports prepared pursuant to other regulations may be submitted to fulfill this requirement if the reports contain all the necessary information and the appropriate distribution is made. These written reports must be of sufficient quality to permit legible reproduction and optical scanning and must be submitted to the NRC in accordance with § 72.4. These reports must include the following information:
A brief abstract describing the major occurrences during the event, including all component or system failures that contributed to the event and significant corrective action taken or planned to prevent recurrence;
A clear, specific, narrative description of the event that occurred so that knowledgeable readers conversant with the design of an ISFSI or MRS, but not familiar with the details of a particular facility, can understand the complete event. The narrative description must include the following specific information as appropriate for the particular event:
The ISFSI or MRS operating conditions before the event;
The status of structures, components, or systems that were inoperable at the start of the event and that contributed to the event;
The dates and approximate times of occurrences;
The cause of each component or system failure or personnel error, if known;
The failure mode, mechanism, and effect of each failed component, if known;
A list of systems or secondary functions that were also affected for failures of components with multiple functions;
For wet spent fuel storage systems only, after the failure that rendered a train of a safety system inoperable, an estimate of the elapsed time from the discovery of the failure until the train was returned to service;
The method of discovery of each component or system failure or procedural error;
For each human performance related root cause, the licensee shall discuss the cause(s) and circumstances;
For wet spent fuel storage systems only, any automatically and manually initiated safety system responses;
The manufacturer and model number (or other identification) of each component that failed during the event; and
The quantities and chemical and physical forms of the spent fuel, HLW, or reactor-related GTCC waste involved in the event;
An assessment of the safety consequences and implications of the event. This assessment must include the availability of other systems or components that could have performed the same function as the components and systems that failed during the event;
A description of any corrective actions planned as a result of the event, including those to reduce the probability of similar events occurring in the future;
Reference to any previous similar events at the same facility that are known to the licensee;
The name and telephone number of a person within the licensee's organization who is knowledgeable about the event and can provide additional information concerning the event and the facility's characteristics; and
The extent of exposure of individuals to radiation or to radioactive materials without identification of individuals by name.
Supplemental information— The Commission may require the licensee to submit specific additional information beyond that required by paragraph (g) of this section if the Commission finds that supplemental material is necessary for complete understanding of an unusually complex or significant event. These requests for supplemental information will be made in writing, and the licensee shall submit, as specified in § 72.4, the requested information as a supplement to the initial written report.
Applicability— The requirements of this section apply to:
Licensees issued a specific license under § 72.40; and
Licensees issued a general license under § 72.210, after the licensee has placed spent fuel on the ISFSI storage pad (if the ISFSI is located inside the collocated protected area, for a reactor licensed under part 50 or part 53 of this chapter) or after the licensee has transferred spent fuel waste outside the reactor licensee's protected area to the ISFSI storage pad (if the ISFSI is located outside the collocated protected area, for a reactor licensed under part 50 or part 53 of this chapter).
Those non-emergency events specified in paragraphs (b), (c), and (d) of this section that occurred within 3 years of the date of discovery.
Notes, amendments, and revision history
Amendments
[68 FR 33615, June 5, 2003, as amended at 85 FR 65664, Oct. 16, 2020; 91 FR 15869, Mar. 30, 2026]
Authority
Authority: Atomic Energy Act of 1954, secs. 51, 53, 57, 62, 63, 65, 69, 81, 161, 182, 183, 184, 186, 187, 189, 223, 234, 274 (42 U.S.C. 2071, 2073, 2077, 2092, 2093, 2095, 2099, 2111, 2201, 2210e, 2232, 2233, 2234, 2236, 2237, 2238, 2273, 2282, 2021); Energy Reorganization Act of 1974, secs. 201, 202, 206, 211 (42 U.S.C. 5841, 5842, 5846, 5851); National Environmental Policy Act of 1969 (42 U.S.C. 4332); Nuclear Waste Policy Act of 1982, secs. 117(a), 132, 133, 134, 135, 137, 141, 145(g), 148, 218(a) (42 U.S.C. 10137(a), 10152, 10153, 10154, 10155, 10157, 10161, 10165(g), 10168, 10198(a)); 44 U.S.C. 3504 note.
Source
Source: 53 FR 31658, Aug. 19, 1988, unless otherwise noted.
Amendments
[68 FR 33615, June 5, 2003, as amended at 85 FR 65664, Oct. 16, 2020; 91 FR 15869, Mar. 30, 2026]