Research on Equipment Qualification for Pressure Transmitter Important to Safety of HPR1000

Abstract

[Introduction] The pressure transmitter important to safety of nuclear power plant needs to pass the equipment qualification to confirm that it can perform the safety function under the accident condition. However, the current relevant standards do not explain the logic and mechanism of such equipment qualification, the rationality is not sufficient. [Methods] Based on the understanding of the identification system of electrical equipment important to safety at home and abroad, combined with the actual identification process of pressure transmitter important to safety of HPR1000, the identification theory of pressure transmitter important to safety was studied in detail. [Results] The important operating environment factors affecting its safety performance were analyzed, the significant aging mechanism was identified, the accelerated aging test was described based on the accelerated aging mathematical model, and the typical accelerated aging sequence and identification process of the safety-important pressure transmitter of HPR1000 was recommended. [Conclusion] The identification process can be used as a reference for the identification of safety-important pressure transmitters in China.

Keywords

• hpr1000
• important to safety
• pressure transmitter
• equipment qualification
• aging mechanism