Characterization of leak pathways in the below grade ducts of the brookhaven graphite research reactor using perfluorocarbon tracers.

Heiser, ; Sullivan, ; Kalb, ; Milian, ; Wilke,

Technical Information Center Oak Ridge Tennessee

关键词: Bgrr reactor;    Soils;    Site characterization;    Leak testing;    Water influx;   

RP-ID  :  DE2001782640

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The focus of this program was the characterization of the soils beneath the main air ducts connecting the exhaust plenums with the Fan House. The air plenums experienced water intrusion during BGRR operations and after shutdown. The water intrusions were attributed to rainwater leaks into degraded parts of the system and to internal cooling water system leaks. As part of the overall characterization efforts, a state-of-the-art gaseous perfluorocarbon tracer technology was utilized to characterize leak pathways from the ducts. This in turn suggests what soil regions under or adjacent to the ductwork should be emphasized in the characterization process. Knowledge of where gaseous tracers leak from the ducts yields a conservative picture of where water transport, out of or into, the ducts might have occurred.