Document: NUREG-0800
Document ID: 853719df-a6ea-408b-8d43-5956155abc38
Document Type: srp
Title: and 8.3.2.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1007/ML100740246.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
Effectiveness of Maintenance at Nuclear Power Plants,” February 22, 2000. 8.2-10 Revision 5 - May 2010 Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. Compliance with GDC 2 requires that nuclear power plant structures, systems, and components important to safety be designed to withstand the effects of natural phenomena such as high and low atmospheric temperatures, high wind, rain, lightning discharges, ice and snow conditions, and weather events causing regional effects without loss of capability to perform their intended safety function. With regard to the offsite power system, this criterion requires that capability for the offsite power system to perform its functions be retained during the most severe natural phenomena that have been historically reported for the site and surrounding area. Therefore, the offsite power system and its components must normally be located in areas that provide protection from the effects of high and low atmospheric temperatures, high wind, rain, lightning discharges, ice and snow conditions, and weather events causing regional effects Meeting this requirement provides assurance that equipment and structures are designed to withstand the effects associated with natural phenomena, thus decreasing the probability that climatology-related natural phenomena could initiate accidents or prevent equipment from performing its safety function during an accident. 2. Compliance with GDC 4 requires that SSCs associated with offsite power system be appropriately protected against dynamic effects, including the effects of missile that may result from equipment failures. The offsite power system is required to provide power to systems important to safety during normal, abnormal, accident, and post-accident conditions. Meeting these requirements provides assurance that the offsite power system supplies