The study of class 1E transmitter response time standard

By analyzing the time response requirement for class 1E transmitter in AP1000 nuclear power plant, the internal time response standard and test method are studied, Combined with the performance test results of Sanmen NPP and international time response standard, the ramp test and step test for the transmitter are analyzed. According to the model of transmitter calculated by the noise test, simulation software is used to simulate the ramp test and step test, which finds out that current time response standards are irrational. The simulation software is also used to compare the results of the ramp test and step test, which demonstrates the rationality of the ramp test. Finally, the modification of national standards is suggested. (authors)