The performance of safety related Air-Operated Valves(AOV) in nuclear power plants has been evaluated to confirm their required Design Based Analysis(DBA) results. As a part of valve performance evaluation, AOV should be tested in site to evaluate its...
The performance of safety related Air-Operated Valves(AOV) in nuclear power plants has been evaluated to confirm their required Design Based Analysis(DBA) results. As a part of valve performance evaluation, AOV should be tested in site to evaluate its setup and running load. A test by using strain gauge sensor requires considerable time and cost but ensure high accuracy. On the other hand, a test by using only air pressure sensors can save curing time and cost but its accuracy is relatively low. The availability of the test by using air pressure sensor has been discussed from the accuracy and economics point of view, compared to the test by using by strain gauge sensors.