Metallic ion generation from ceramic rods by ECR ion source and thermodynamic feature of vaporization

Yokota, Wataru; Nara, Takayuki; Arakawa, Kazuo; ;

Nuclear Instruments and Methods in Physics Research B, 122(1), p.141 - 148, 1996/00

https://doi.org/10.1016/S0168-583X(96)00771-9

no abstracts in English

Large-scale test on sodium leak and fire (IV); Test of sodium leak and fire using simulated piping; Run-E2

Morii, Tadashi*; ;

PNC TN9410 87-088, 59 Pages, 1987/06

PNC-TN9410-87-088.pdf:3.33MB
PNC-TN9410-87-088TR.pdf:3.29MB

A test, Run-E2, of sodium leak from a 1/3.5 scale simulated Na piping of the secondary circuit of Monju was conducted using the SOLFA-2 in the SAPFIRE facilities. In the simulated piping, a leak hole with an area reduced by (1/3.5) from an area of 1/4Dt of the actual piping was made on the upper wall of the piping in advance. In the test, a pressure equal to the system pressure of 3.8 kg/cmg of the hot leg piping in secondary circuit of the actual plant was applied, and sodium was spilled. Spill duration was approximately 13 minutes. The test results showed that the integrity of the insulation structure around the piping will not be broken by a Na Pressure and combustion heat during an accident, therefore, the spray leakage of Na can be fully prevented. Moreover, burning rate of Na during leakage was approximately 4% of the flow rate of the Na leak. Compared to about 30% obtained from the spray combustion test conducted previously using a spray nozzle, the combustion following a realistic Na Leak from the actual piping is found to be milder than that of spray combustion.