Document: NUREG-0800
Document ID: 7c104096-d040-463a-a94b-a0af08ab3478
Document Type: srp
Title: DYNAMIC TESTING AND ANALYSIS OF SYSTEMS, STRUCTURES, AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0702/ML070230008.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.2
CFR Part: 
CFR Title: 

Content:
e met if vibration, thermal expansion, and dynamic effects testing are conducted during startup functional testing for specified high- and moderate-energy piping and their supports and restraints. The purposes of these tests are to confirm that the piping, components, restraints, and supports have been designed to withstand the dynamic loadings and operational transient conditions encountered during service as required by the code and to confirm that no unacceptable restraint of normal thermal motion occurs. An acceptable test program to confirm the adequacy of the designs should include the following: 3.9.2-10 Revision 3 - March 2007 A. A list of systems to be monitored. B. A list of the flow modes of operation and transients like pump trips, valve closures, etc. to which the components will be subjected during the test. (For additional guidance see RG 1.68). For example, the transients of the reactor coolant system heatup tests should include but not necessarily be limited to: (i) Reactor coolant pump start. (ii) Reactor coolant pump trip. (iii) Operation of pressure-relieving valves. (iv) Closure of a turbine stop valve. C. A list of selected locations in the piping system at which visual inspections and measurements (as needed) will be performed during the tests. For each of these selected locations, the deflection (peak-to-peak), pressure, or other appropriate criteria to show that the stress and fatigue limits are within the design levels should be provided. D. A list of snubbers on systems which experience sufficient thermal movement to measure snubber travel from cold to hot position. E. A description of the thermal motion monitoring program (i.e., verification of snubber movement, adequate clearances and gaps, including acceptance criteria and how motion will be measured). F. If vibration is noted beyond the acceptance levels set by the criteria of Item II.1.C above, corrective restraints should be designed, incorporated in the piping system analysis, and