Document: NUREG-0800
Document ID: a4f5c92f-1c1f-4a9c-b4d4-cb2fcc282cae
Document Type: srp
Title: PUMP FLYWHEEL INTEGRITY (PWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340666.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.1.1
CFR Part: 
CFR Title: 

Content:
uct and operate nuclear power plants. These documents are made available to the public as part of the Commisslon's policy to inform the nuclear industry and the general public of regulatory procedures and policies. Standard review plans are not substitutes for regulatory guides or the Commission's regulations and compliance with them is not required. The standard review plan sections are keyed to the Standard Format and Content of Safety Analysis Reports for Nuclear Power Plants. Not all sections of the Standard Format have a corresponding review plan. Published standard review plans will be revised periodically, as appropriate, to accommodate comments and to reflect new informa- tion and experience. Comments and suggestions for Improvement will be considered and should be sent to the U.S. Nuclear Regulatory Commission. Office of Nuclear Reactor Regulation. Washington. D.C. 2t156 Information in the applicant's safety analysis report (SAR) on materials selection and the procedures used to minimize flaws and improve mechanical properties is reviewed to establish that sufficient information is pro- vided to permit an evaluation of the adequacy of the flywheel materials. 2. Fracture Toughness The fracture toughness of the materials, including materials tests, correlation of Charpy specimens to fracture toughness parameters, or the alternate use of a nil-ductility transition reference temperature (RTNnT) are reviewed to establish that the flywheel materials will exhibit adequate fracture toughness at normal operating temperature (Ref. 2). 3. Preservice Inspection The descriptive information is reviewed to verify that the bore of the flywheel is machined to final dimensions if it is flame cut, and that ultrasonic and surface inspections are performed on all finished machined surfaces. 4. Flywheel Design The flywheel design information including allowable stresses, design overspeed considerations, and shaft and bearing design adequacy, is reviewed. 5. Overspeed Test The