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:
t require prior NRC approval provided that it results from an approved upgrade to the effluent radiation monitoring system. 4.10 10 CFR 50.47(b)(10)—Emergency Protective Actions a. The regulation at 10 CFR 50.47(b)(10) states the following: A range of protective actions has been developed for the plume exposure pathway EPZ for emergency workers and the public. In developing this range of actions, consideration has been given to evacuation, sheltering, and, as a supplement to these, the prophylactic use of potassium iodide (KI), as appropriate. Evacuation time estimates have been developed by applicants and licensees. Licensees shall update the evacuation time estimates on a periodic basis. Guidelines for the choice of protective actions during an emergency, consistent with Federal guidance, are developed and in place, and protective actions for the ingestion exposure pathway EPZ appropriate to the locale have been developed. b. Three emergency planning functions have been defined for this planning standard: (1) A range of public PARs is available for implementation during emergencies. (2) Evacuation time estimates for the population in the plume exposure pathway EPZ are available to support the formulation of PARs and have been supplied to State and local governmental authorities. (3) A range of protective actions is available for plant emergency workers during emergencies, including those for hostile action events. c. Appendix E to 10 CFR Part 50 does not contain any support requirements. Informing criteria appear in NUREG-0654 in Sections II.J.1–8, Section II.J.10, and Supplement 3 and in the licensee’s emergency plan. 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 capability of the ERO to carry out timely and appropriate protective actions for onsite employees and other individuals present in the plant areas controlled by the