Document: NUREG-0800
Document ID: 611e1a8a-5fb2-4d1d-8b0e-7561bc7e46ac
Document Type: srp
Title: SEISMIC AND DYNAMIC QUALIFICATION OF MECHANICAL AND ELECTRICAL EQUIPMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340654.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.10
CFR Part: 
CFR Title: 

Content:
er October 27, 1972, the qualification of electrical equipment and their supports should meet the requirements and recommendations of IEEE Std. 344-1975 and the Regulatory Position of Regulatory Guide 1.100, which endorses IEEE Std. 344-1975. These documents are generally applicable to all types of equipment and should be used to the extent practicable for the qualifica- tion of mechanical equipment as well. Specifically, conformance to the following criteria should be demonstrated. a. Qualification for Equipment Operability (1) Tests and analyses are required to confirm the operability of all mechanical and electrical equipment during and after an earthquake of magnitude up to and including the OBE and SSE, and for all static and dynamic loads from normal, transient and accident conditions. Prior to SSE qualification, it should be demonstrated that the equipment can withstand the OBE excitation without loss of structural integrity. Analyses alone, without testing, are acceptable as a basis for qualification only if the necessary functional operability of the equipment is assured by its structural integrity alone. When complete testing is impractical, a combination of tests and analyses is acceptable. Equipment that has been previously qualified by means of tests and analyses equivalent to those described here are acceptable provided that proper documentation of such tests and analyses is-submitted. 3.10-3 Rev. 2 - July 1981 (2) Equipment should be tested in the operational condition. Operability should be verified during and/or after the testing, as applicable to the equipment being tested. Loadings simulating those of plant normal operation, such as thermal and flow-induced loading, if any, should be concurrently superimposed upon the seismic and other pertinent dynamic loading to the extent practicable. Particular attention should be paid, in operability qualification of mechanical equipment subjected to flow-induced loading, to incorporate degraded flow