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:
provided in accordance with the requirements of this SRP section, and that his evaluation 5.4.1.1-6 Rev. 1 - July 1981 supports conclusions of the following type, to be included in the staff's safety evaluation report: The staff concludes that the precautions taken to assure the integrity of the reactor coolant pump flywheels are acceptable and meet the require- ments of General Design Criteria 1 and 4 and 10 CFR Part 50, §50.55a(a)(1). This conclusion is based on the following: 1. The applicant's selection of materials, fracture toughness tests, design procedures, preservice overspeed spin testing program, and inservice inspection program for the reactor coolant pump flywheels have been reviewed and found to meet the requirements for GDC 1 and 10 CFR Part 50, §50.55a(a)(1) with respect to providing adequate assurance of a quality product commensurate with the importance of the safety function. 2. The applicant has met the requirements of GDC 4 complying with the guidance of Regulatory Guide 1.14 in using suitable materials with adequate fracture toughness, and conservative design procedures, and by providing a preservice testing, and inservice inspection program for flywheels of reactor coolant pump motors which provides reason- able assurance of the structural integrity of the flywheels in the event of design overspeed transients on postulated accidents. V. IMPLEMENTATION The following is intended to provide guidance to applicants and licensees regarding the NRC staff's plans for using this SRP section. Except in those cases in which the applicant proposes an acceptable alternative method for complying with specified portions of the Commission's regulations, the method described herein will be used by the staff in its evaluation of conformance with Commission regulations. Implementation schedules for conformance to parts of the method discussed herein are contained in the referenced regulatory guide. VI. REFERENCES 1. 10 CFR Part 50, Appendix A, "General Design