2 results about "Periodic testing" patented technology

This invention provides a universal master grating periodic testing fixture, including a fixing plate. The top surface of the fixing plate has a fixing groove for placing the grating master. The bottom surface of the fixing groove has multiple sliding through holes arranged at intervals. Each sliding through hole contains a sliding component. By changing the position of the sliding components in each sliding through hole, the edge areas of grating masters of different shapes and sizes can be engaged. In other words, using this universal master grating periodic testing fixture, periodic testing of master gratings of different shapes and sizes can be achieved, reducing testing costs, improving testing efficiency, and avoiding the accumulation of master grating periodic testing fixtures.

The application relates to the technical field of periodic testing, and discloses a safety injection logic test optimization method, device, equipment and medium for a nuclear power station. The method comprises the following steps: in the process of performing a safety injection logic test on the nuclear power station, if it is detected that a fault scene simulation of the nuclear power station is ended, a small-flow electric valve on a small-flow pipeline of an RCV pump of the nuclear power station is controlled to be started, and after the small-flow electric valve is started, an adjustable isolation valve is controlled to be adjusted from a closed state to a fully open state within a set opening time range, so that the adjustable isolation valve is used for slowly injecting reactor coolant into a primary pump No. 1 sealing leakage flow pipeline of the nuclear power station through the small-flow pipeline of the RCV pump, wherein the adjustable isolation valve is installed on the small-flow pipeline of the RCV pump and located upstream of the small-flow electric valve. The method can improve the safety of nuclear power station equipment operation.