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:
he second test factor still needs to be evaluated. (1) If the licensee’s original commitment resulted from a conservative operating philosophy, the licensee may be able to show that the reduction in commitment would not reduce the effectiveness of its emergency plan. (2) If the licensee’s original commitment resulted from the need to compensate for preparedness or response constraints or vulnerabilities specific to the facility, emergency planning zone (EPZ), and jurisdiction, any reduction in commitment would likely result in a reduction in effectiveness if the constraints or vulnerabilities are still present. DG-1324, Page 13 c. In either case, the conclusion is not based on whether “margin” exists but instead on whether the licensee can demonstrate that the change does not reduce the effectiveness of its emergency plan and the emergency plan, as modified, continues to comply with applicable regulations. In the case of Regulatory Position 1.8.b.(1), conditions may have developed since the original commitments were made, thus making them necessary to maintain the effectiveness of the emergency plan. As such, the concept of margin has no role in a 10 CFR 50.54(q) change evaluation. 1.9 Emergency Plan Changes at Decommissioning Facilities a. The change process at 10 CFR 50.54(q)(3) and the guidance in this RG are applicable to holders of production and utilization facility licenses issued under 10 CFR Part 50 and 10 CFR Part 52. This includes those licensed facilities that have certified the permanent cessation of operations but have not had their license terminated. This section does not replace the guidance elsewhere in this guide, but clarifies the role of the 10 CFR 50.54(q)(3) change process at decommissioning facilities. (1) The plant configuration and design basis will change over the duration of the decommissioning as the licensee puts modifications into place authorized under the applicable change processes, such as 10 CFR 50.59. The 10 CFR