Document: NUREG-0800
Document ID: a1429b37-f5c5-4e2e-8d40-b26676261788
Document Type: srp
Title: Revision 3 - March 2007
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070710446.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8
CFR Part: 
CFR Title: 

Content:
lear Regulatory Commission, Washington, DC 20555, Attention: Reproduction and Distribution Services Section, or by fax to (301) 415-2289; or by email to DISTRIBUTION@nrc.gov. Electronic copies of this section are available through the NRC's public Web site at http://www.nrc.gov/reading-rm/doc-collections/nuregs/staff/sr0800/, or in the NRC's Agencywide Documents Access and Management System (ADAMS), at http://www.nrc.gov/reading-rm/adams.html, under Accession # ML070710446. NUREG-0800 U.S. NUCLEAR REGULATORY COMMISSION STANDARD REVIEW PLAN BRANCH TECHNICAL POSITION (BTP) 8-3 STABILITY OF OFFSITE POWER SYSTEMS REVIEW RESPONSIBILITIES Primary - Organization responsible for electrical engineering Secondary - None A. BACKGROUND The staff has traditionally required each applicant to perform stability studies for the electrical transmission grid that would be used to provide the offsite power sources to the plant. The basic requirement is that loss of the largest operating unit on the grid will not result in loss of grid stability and availability of offsite power to the plant under consideration. Isolated power systems of limited generating capacity are inherently less stable than equivalent systems with supporting grid interties. It is also obvious that limited systems are more vulnerable to natural disasters, such as tornadoes or hurricanes. The staff developed Draft RG 1.206 to address anticipated combined license applications submitted under 10 CFR Part 52. Detailed information and guidance are provided in Section C.I.8 of RG 1.206 which provides that applicants submit detailed analyses and studies for staff review. In addition, IEEE Std. 242 and IEEE Std. 399 provide technical information and guidance regarding the protection and performance of the offsite electric power system. BTP 8-3-2 Revision 3 - March 2007 B. BRANCH TECHNICAL POSITION 1. The staff has concluded, from a review of appropriate reliability data, that power systems with supporting grid interties