Document: NUREG-0800
Document ID: 97120913-d26f-4324-ab62-22f3f5b73925
Document Type: srp
Title: and 8.3.2.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600410.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
ovides 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 structures, systems, and components 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 electric power required for operation of systems important to safety even if/when subject to adverse dynamic effects. 3. Compliance with GDC 5 requires that structures, systems, and components important to safety shall not be shared among nuclear power units, unless it can be shown that such sharing will not significantly impair their ability to perform their safety functions. This criterion requires that component parts of the offsite power system not be shared among units without sufficient justification, thereby ensuring that an accident in one unit of a multiple-unit facility can be mitigated using an available complement of mitigative features, including required ac power, irrespective of conditions in the other units and 8.2-10 Revision 4 - March 2007 without giving rise to conditions unduly adverse to safety in another unit. Regulatory Guide 1.32 is cited to establish acceptable guidance related to the sharing of structures, systems, and components of the preferred offsite power system. Meeting the requirements of GDC 5 provides assurance that an accident within any one unit of a multiple-unit plant may be mitigated irrespective of conditions in other units without affecting the overall operability of