5兆瓦核供热堆三年运行实践

THE OPERATION PRACTICE FOR THREE YEARS AT THE 5MW HEATING REACTOR

5兆瓦核供热堆已成功地完成三个冬季供热运行。本文概括描述了5兆瓦堆供热运行及开展综合利用研究取得的进展系统地总结了5兆瓦堆在正常运行、瞬态工况,以及放射性监测的结果。运行实践表明,5兆瓦堆具有良好的固有安全性和运行可靠性。

The 5MW heating reactor (HR--5) is an integrated vessel type, light water reactor cooled by natural circulation with self--pressurized performance. The initial criticality of HR--5 reached in November 1989 and full power operation in December, 1989. Until now the HR--5 has been succcess- fully operated for three winter seasons. In this paper the acquired development on heating operation and comprehensive application--co- generation of electricity and heat, air condition using nuclear heat are descripted. Some results of experi- ments carried out at HR--5 such as, selfstability, selfpressurization, loss of heat sink without shut down and passive decay heat removal system as well as the radiation detecting results are also sysmatically summarized. The operation practice indicates the HR--5 has excellent inherent safety and high reliability.