System of pressure pulse measuring in liquid sodium

The system, meant for measuring of pressure pulse in liquid sodium in in-pile experiments with fast reactor channel models with liquid-metal coolant at temperature to 400 deg. C was developed. The system of pressure pulse measuring includes the pressure sensor, heat-protective device, which consists of the membrane unit and pulse line (PL) with metallic filler. PL length is to 5 m. The pressure pulse generator for pressure pulse measuring system controlling was developed. The generator allows forming of pressure pulse with amplitude to 60 MPa with duration of the front to 5 ms. The experimental researches applying the pressure pulse generator were performed. The results of these works can be used at developing of fast-acting systems of pressure pulse measuring in high-temperature liquid mediums. (author)