Document: NUREG-0800
Document ID: ba716f3a-da21-413e-a855-dc0255b76522
Document Type: srp
Title: PUMP FLYWHEEL INTEGRITY (PWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1006/ML100680157.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.1.1
CFR Part: 
CFR Title: 

Content:
l is not required. B. Examination procedures and acceptance criteria should be in conformance with the requirements specified in Subsection II.3.A of this SRP section. 7. Operational Programs. For COL reviews, the description of the operational program and proposed implementation milestones for the Pre-Service Inspection, Inservice Inspection, and Inservice Testing Programs are reviewed in accordance with 10 CFR Part 50, Appendix A, 10 CFR 50.55a(a)(1) and 10 CFR 50.55a(f). The implementation milestone is completion prior to initial plant start-up, prior to commercial service and after generator on-line on nuclear heat. Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. GDC 1 and 10 CFR 50.55a require that systems and components be designed, fabricated, erected, constructed, tested, and inspected to quality standards commensurate with the importance of the safety function to be performed. 10 CFR 50.55a also incorporates by reference the applicable editions and addenda of the ASME Code. Reactor coolant pump flywheel failure can result in reduction or loss of forced coolant flow, and the effects of resulting missiles could possibly damage the reactor coolant system, the containment, or engineered safety features which provide functions of considerable importance to safety. Application of 10 CFR 50.55a and GDC 1 provides assurance that established standard practices of proven or demonstrated effectiveness are used to assure that failure of the flywheel will not occur, thereby precluding the effects of such a failure commensurate with its importance to safety. 2. GDC 4 requires structures, systems, and components important to safety be protected against the effects of missiles that might result from equipment failures. RG 1.14 describes methods to minimizing the potential for failures of the reactor coolant pump flywheels. During