Document: NRC Regulatory Guide
Document ID: b647b09e-9948-474b-8b4a-d2e08837ffa5
Document Type: regulatory_guide
Title: Guidance on Making Changes to Emergency Plans for Nuclear Power Reactors (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1505/ML15054A370.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.219
CFR Part: 
CFR Title: 

Content:
to have the capability to assess, classify, and declare an emergency condition within 15 minutes after the availability of DG-1324, Page 23 indications that an EAL has been exceeded and to declare the emergency as soon as possible following the identification of the appropriate emergency classification level. Accurate classifications are also important to avoid under-classifications and over-classifications. e. The following are examples of changes to the licensee’s emergency plan that could require prior NRC approval: (1) A change could require prior NRC approval if it would reduce the licensee’s capability to assess, classify, and declare an emergency condition within 15 minutes of the availability of indications that an EAL has been exceeded and to promptly declare the emergency condition as soon as possible following the identification of the appropriate emergency classification level. Examples include the following: (a) a change to the normal shift complement that would delay the licensee’s capability to classify an emergency condition by making the expertise to read or interpret a seismic instrument reading cited in the EAL scheme unavailable onshift, (b) a change to the EAL scheme that would eliminate all predetermined radiation monitor EAL thresholds and rely instead on manually initiated dose projections, (c) a change to ERO staffing that would affect the timeliness of emergency declaration by assigning competing duties to the ERO positions that are responsible for performing emergency classifications, and (d) a change to a facility procedure that directs that the 15-minute declaration period starts only after the duration of the condition incorporated in the EAL (e.g., a fire lasting for 10 minutes) has elapsed. (2) A change to a particular EAL could require prior NRC approval if it renders it ineffective such that an accurate classification and timely declaration would not occur as required for an event. Examples include the following: (a) a change