Document: NUREG-0800
Document ID: fbcd53f5-fb4a-436f-9443-ef89f47e42cc
Document Type: srp
Title: SEISMIC AND DYNAMIC QUALIFICATION OF MECHANICAL AND ELECTRICAL
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1422/ML14227A631.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.10
CFR Part: 
CFR Title: 

Content:
the NRC staff. Large uncertainties exist in the seismic qualification of equipment, as a class, on the basis of earthquake experience data, because (1) it is difficult to compile a credible earthquake experience database (e.g., estimation of ground and floor earthquake excitations used in the earthquake experience database), (2) the inclusion and exclusion rules (termed “prohibited features” in IEEE Std. 344-2004) of equipment in the database may not be complete, (3) the similarity between equipment in fossil or petrochemical plants in the database and the equipment in NPPs is difficult to establish; and, most importantly, (4) generally, there is not sufficient credible information from the earthquake experience database to provide assurance that certain active mechanical and electrical equipment will function properly during earthquakes. 4. GDC 1 and 10 CFR Part 50, Appendix B, Criteria XVII, “Quality Assurance Records,” establish requirements for records concerning the qualification of equipment. To satisfy these requirements, complete and auditable records must be available, and the applicant must maintain them, for the life of the plant. These files should describe the qualification method used for all equipment in sufficient detail to document the degree of compliance with the criteria of this SRP section. These records should be updated and kept current as equipment is replaced, further tested, or otherwise further qualified. The equipment qualification file should contain a list of all systems, equipment, and the equipment support structures, as defined in the second paragraph of subsection I of this SRP Section. The equipment list should identify which equipment is supplied by the nuclear steam supply system (NSSS) and which equipment is supplied by the balance of plant (BOP). The equipment qualification file should also include qualification summary data sheets for each piece of equipment (i.e., each mechanical and electrical component of each