Document: NUREG-0800
Document ID: 5dc31795-dfdc-4ed0-a4c2-e6a13e4997ab
Document Type: srp
Title: SEISMIC AND DYNAMIC QUALIFICATION OF MECHANICAL AND ELECTRICAL
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1608/ML16088A101.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.10
CFR Part: 
CFR Title: 

Content:
loads, and an adequate analysis is made to show the validity of the static application of loads. xi. The in situ application of vibratory devices to simulate the seismic and dynamic vibratory motions on a complex active device is acceptable to confirm the functionality of the device when the applicant shows that a meaningful test can be made in this way. xii. The test program may be based on selective testing of a representative number of components according to type, load level, size, and the like on a prototype basis. xiii. Selection of damping values for equipment to be qualified by analysis should be made in accordance with RG 1.61, “Damping Values for Seismic Design of Nuclear Power Plants,” and that for equipment to be qualified by testing should be made in accordance with IEEE Std. 344-2004. Higher damping values may be used if justified by documented test data with proper identification of the source and mechanism. xiv. When complete testing is not practical, the features listed below should be incorporated into a test and analysis functionality assurance program for pumps and valves. Similar programs can be developed for other types of equipment. (1) Simple and passive elements, such as valve and pump bodies and their related piping and supports, may be analyzed to confirm structural integrity under postulated event loadings. However, complex active devices such as pump motors, valve operators and 3.10-9 Revision 4 – December 2016 gate or disk assemblies, and other electrical, mechanical, pneumatic, or hydraulic appurtenances which are vital to the pump or valve operation should be tested for functionality. (2) The following analyses are acceptable provided they are correlated to classical problems, elementary laboratory tests, or in situ tests: a. An analysis is performed to determine the vibratory input to the valve or pump. b. An analysis is performed to determine the system’s natural frequencies and the movement of the pump or valve during the