SCWR CHEMISTRY ISSUES: HYDROTHERMAL STABILITY OF HYDRAZINE
The 5th International Symposium on SuperCritical Water-cooled Reactors - 2011 March 13-16


Presented at:
The 5th International Symposium on SuperCritical Water-cooled Reactors
2011 March 13-16
Location:
Vancouver,Canada
Session Title:
Chemistry III ( Chemistry Control)

Authors:
Andriy Plugatyr (Trent University)
Tina Hayward (Trent University)
Igor Svishchev (Trent University)
  

Abstract

Hydrazine is one of the potential candidates for chemistry control for both in-core and out-of-core components of a SCWR. At present, systematic experimental data on hydrazine chemistry is mainly limited to sub-critical water conditions. Supercritical water flow-through test facility for the study of hydrothermal processes is described. The decomposition of hydrazine in aqueous solution is examined along the 25 MPa isobar. The obtained first-order rate constant for the thermal decomposition of hydrazine increases from 3.73 × 10-4 s-1 at 473 K to about 0.31 s-1 at 725 K.

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