Document: NUREG-0800
Document ID: 18527191-dc54-4f99-8aca-d59648ec8d69
Document Type: srp
Title: INTERNALLY GENERATED MISSILES (INSIDE CONTAINMENT)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340507.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.5.1.2
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Auxiliary Systems Branch (ASB) Secondary - None I. AREAS OF REVIEW The ASB review of the structures, systems, and components (SSC) to be protected from internally generated missiles (inside containment) to assure conformance with the requirements of General Design Criterion 4 includes all SSC within the contain- ment and the containment itself. The review includes internally generated missiles associated with component overspeed failures, missiles that could originate from high energy fluid system failures, and missiles due to gravitational effects. The ASB with the requested assistance of the Containment Systems Branch (CSB) and the Reactor Systems Branch (RSB) reviews the functional operations and performance requirements for structures, systems,'and components inside containment and identi- fies which of the operations are necessary for the safe shutdown of the reactor facility in the event of an accident or other circumstances that might result in an internally generated missile, or for the mitigation of the effects of loss-of- coolant or other accidents. Safety-related SSC are reviewed with respect to their capability to perform functions required for attaining and maintaining a safe shut- down condition during such accident conditions. The review of internally generated missile protection includes the following: 1. Structures, systems or portion of systems, and components requiring protection from internally generated missiles and the methods of protection provided against such missiles. 2. Credible primary missiles including, valve hardware, retaining bolts, relief valves parts, instrument wells and reactor vessel seal rings (PWR). 3. Credible secondary missiles generated as a result of impact with primary missiles. Rev. 2 - July 1981 USNRC STANDARD REVIEW PLAN Standard review plans are prepared for the guidance of the Office of Nuclear Reactor Regultion staff responsible for the review of applications to constructaand