Research on periodic tests improvement of emergency diesel generator units in Fuqing Phase I nuclear power plant

The periodic tests of the emergency diesel generator units (EDG) of Fuqing Phase I Nuclear Power Plant are currently using the French standard RCC-E 2005. The protection of the diesel generator is insufficient during the low-power periodic test, and there is a risk of serious damage to the equipment. In order to solve this problem, this paper analyzes the provisions of the IEEE 387 standard for the periodic test of the EDG, and improves the periodic tests of EDG according to the IEEE 387 standard;the original low-power test is cancelled, the test method that the EDG connect to the grid to perform the periodic tests during normal operation of the plant, and the improved test content is analyzed in detail, making the EDG periodic test method more economical and safe. The current improvement has been approved by the nuclear safety regulatory agency, which provides important reference for the related periodic test improvement of the nuclear power plant. (author)