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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Hirose, Jiro Suzuki, Kenichi Ueki, Takashi Yoshika, Naoki |
| Copyright Year | 2008 |
| Abstract | Active valve assemblies in important systems to safety are required to maintain the operability during or following earthquakes. Motor operated valve assemblies have been designed to a validated response capacity 60m/s2 at the actuator in accordance with “JEAG4601-supplement 1991” in Japan. The Regulatory Guide for Reviewing Seismic Design of Nuclear Power Reactor Facilities issued in September 2006 defines Design Basis Earthquake Ground Motion and requires that residual risk for large earthquakes should be considered. It is needed to acquire seismic capacity data for a variety of active valve assemblies. JNES has performed fragility tests for motor operated valves: globe valve, gate valve and butterfly valve. An experimental test program is developed to ensure operating requirements for valve assemblies whose safety-related function is to open, close, or regulate fluid flow, and structural requirements for pressure boundary integrity. A series of vibration tests has been performed using shaking tables at varied acceleration levels up to target acceleration levels by sinusoidal waves. As a result of the vibration tests, the operability of valve assemblies for each type of motor operated valve has been verified at the target acceleration levels. The yoke of a motor operated gate valve connecting the actuator and the valve body was identified to be vulnerable for low cycle fatigue depending on the postulated load conditions in terms of intensity and frequency. The resulting seismic capacity data of actual valves will be applied for a fragility analysis of Seismic PSA. |
| Sponsorship | Pressure Vessels and Piping |
| Starting Page | 17 |
| Ending Page | 23 |
| Page Count | 7 |
| File Format | |
| ISBN | 9780791848319 |
| DOI | 10.1115/PVP2008-61306 |
| e-ISBN | 0791838285 |
| Volume Number | Volume 8: Seismic Engineering |
| Conference Proceedings | ASME 2008 Pressure Vessels and Piping Conference |
| Language | English |
| Publisher Date | 2008-07-27 |
| Publisher Place | Chicago, Illinois, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Actuators Fluid dynamics Motors Valves Risk Pressure Waves Engines Earthquake resistant design Low cycle fatigue Stress Design Gates (closures) Earthquakes Safety Nuclear reactors Vibration tests |
| Content Type | Text |
| Resource Type | Article |
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