Document: NUREG-0800
Document ID: 694a6d46-6a73-4dcf-afa8-2ea3a4a0181a
Document Type: srp
Title: REACTOR PRESSURE VESSEL INTERNALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340641.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.5
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Mechanical Engineering Branch (MEB) Secondary - None I. AREAS OF REVIEW Reactor pressure vessel internals consist of all the structural and mechanical elements inside the reactor vessel. General Design Criteria 1, 2, 4 and 10 and 10 CFR Part 50, §50.55a require that structures and components important to safety shall be constructed and tested to quality standard commensurate with the import- ance of the safety functions to be performed, and designed with appropriate margins to withstand effects of anticipated normal plant operational occurrences; natural phenomena such as earthquakes; postulated accidents including loss-of-coolant accidents (LOCA), and from events and conditions outside the nuclear power unit. For the purpose of this standard review plan section, the term "reactor internals" includes core support structures and other internal structures and refers to all structural and mechanical elements inside the reactor pressure vessel with the exception of the following: 1. Reactor fuel elements, the reactivity control elements out to the coupling interfaces with the drive units (the fuel system design is covered in Standard Review Plan (SRP) Section 4.2, but the structural aspects of reactor fuel assemblies are reviewed with the reactor internals). 2.. Control rod drive elements (the drive elements inside the guide tubes are covered in SRP Section 3.9.4, but the guide tubes are reviewed with the reactor internals). 3. In-core instrumentation (in-core instrumentation support structures are reviewed with the reactor internals). Rev. 2 - July 1981 USNRC STANDARD REVIEW PLAN Standard roew plans ao prepared for the guidance of the Office of Nuclear Reactor Regulton staffresponsible for the review of applicatons to construct and operate nuclear power plants. Thee documenta made avaiable to the public as pat of the Commisslon's policy to Inform the nuclear Indus" arnd the general public of regulatory procedures and pollcies.