Document: NUREG-0800
Document ID: 00ffd6e7-2130-4c82-a8d7-59ebad4378f3
Document Type: srp
Title: LIGHT LOAD HANDLING SYSTEM (RELATED TO REFUELING)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070509.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.1.4
CFR Part: 
CFR Title: 

Content:
design of the LLHS. If not considered, an earthquake could overload LLHS structures, systems, and components to the extent that it could cause an unsafe condition (e.g., a fuel assembly drop with the potential for a release of radioactive materials from damaged irradiated fuel or criticality accidents) and could result in unacceptable personnel radiation exposures. SRP Section 9.1.4 cites Regulatory Guide 1.29, position C.1 for safety-related portions and position C.2 for nonsafety-related portions of the design, as well as positions C.1 and C.6 of Regulatory Guide 1.13. These positions provide guidance for meeting these requirements. Meeting this requirement provides assurance that structures, systems, and components associated with the LLHS will perform their intended function of safely carrying loads that, if dropped, could cause unsafe conditions, thereby keeping personnel exposures to radiation within acceptable limits.20 2. 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 function, including, in the event of an accident in one unit, an orderly shutdown and cooldown of the remaining units. DRAFT Rev. 3 - April 1996 9.1.4-6 The requirements of GDC 5 are imposed to ensure that design of the LLHS requires essential independence in the LLHS structures, systems, and components in the event of shared use of the LLHS in multiple-unit plants. The shared use in multiple-unit plants, therefore, will not significantly affect the LLHS safety function. SRP Section 9.1.4 provides guidance to meet these requirements. Meeting this requirement provides assurance that the LLHS and associated systems, structures, and components will continue to perform their required safety functions when the LLHS is shared among nuclear power units such that, in the event of an accident in one unit,