Document: NUREG-0800
Document ID: 77e928bd-5fcf-425f-b8c0-85215a64682f
Document Type: srp
Title: INTERNALLY-GENERATED MISSILES (INSIDE CONTAINMENT)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0703/ML070380167.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.2
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of plant design for protection of structures, systems, and components from internal and external hazards Secondary - None I. AREAS OF REVIEW All structures, systems, and components (SSCs) ( inside containment) are to be protected from internally-generated missiles to ensure compliance with 10 CFR 50, Appendix A, General Design Criterion (GDC) 4 requirements. This includes all SSCs within the containment and the containment itself. The review includes internally-generated missiles from component overspeed failures, missiles that could originate from high-energy fluid system failures, and missiles caused by or as a consequence of gravitational effects. The review includes identification, functional operations and performance requirements for all SSCs (inside containment), necessary for the safe shutdown of the reactor facility and the failure of SSCs that could cause a significant release of radioactivity. The review also includes adequacy of methods of protection from internally-generated missiles for all SSCs necessary to perform functions required to attain and maintain a safe shutdown or to mitigate the consequences of an accident. 3.5.1.2-2 Revision 3 - March 2007 The specific areas of review are as follow: 1. Protection from internally-generated missiles including identification of structures, systems or portions of systems, components and the methods of protection provided. Determination of the potential of pressurized components and systems for generating missiles such as valve bonnets and hardware-retaining bolts, relief valve parts, instrument wells and reactor vessel seal rings (PWR). Determination of the potential of high-speed rotating machinery for generating missiles from component overspeed or such failures as the pump itself (from seizure), pump or component parts, and rotating segments (e.g., impellers and fan blades). 2. Internal missile effects on nonsafety-related SSCs in