Document: 10 CFR Part 50
Document ID: 96de988b-1ca6-4fa0-b3f6-45aa1e23985a
Document Type: cfr
Title: Immediate notification requirements for operating nuclear power reactors.
Source: 10 CFR Part 50
Source URL: https://www.ecfr.gov/current/title-10/part-50/section-50.72
Revision Date: 
Chapter: 
Section ID: 50.72
CFR Part: 50
CFR Title: 10

Content:
ii ) Paragraph (b)(1), “One-hour reports,” paragraph (b)(2), “Four-hour reports,” or paragraph (b)(3), “Eight-hour reports,” as the paragraph of this section requiring notification of the non-emergency event. ( b ) Non-emergency events — ( 1 ) One-hour reports. If not reported as a declaration of an Emergency Class under paragraph (a) of this section, the licensee shall notify the NRC as soon as practical and in all cases within one hour of the occurrence of any deviation from the plant's Technical Specifications authorized pursuant to § 50.54(x) of this part . ( 2 ) Four-hour reports. If not reported under paragraphs (a) or (b)(1) of this section, the licensee shall notify the NRC as soon as practical and in all cases, within four hours of the occurrence of any of the following: ( i ) The initiation of any nuclear plant shutdown required by the plant's Technical Specifications. ( ii ) - ( iii ) [Reserved] ( iv ) ( A ) Any event that results or should have resulted in emergency core cooling system (ECCS) discharge into the reactor coolant system as a result of a valid signal except when the actuation results from and is part of a pre-planned sequence during testing or reactor operation. ( B ) Any event or condition that results in actuation of the reactor protection system (RPS) when the reactor is critical except when the actuation results from and is part of a pre-planned sequence during testing or reactor operation. ( v ) - ( x ) [Reserved] ( xi ) 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. ( 3 ) Eight-hour reports. If not reported under paragraphs (a) , (b)(1) or (b)(2) of this section, the licensee shall notify the NRC as soon as practical and in all