RESPONSE OF ELECTROCHEMICAL SENSORS TO IONIZING-RADIATION IN HIGH-TEMPERATURE AQUEOUS ENVIRONMENTS

被引：7

作者：

TAYLOR, DF

机构：

[1] GE Corporate Research and, Development, Schenectady, NY

来源：

CORROSION | 1991年 / 47卷 / 02期

关键词：

AUTOCLAVE; BREMSSTRAHLUNG; BWR; CONDUCTIVITY; CORROSION POTENTIAL; DOSIMETRY; LINAC; PH; RADIOLYSIS; REFERENCE ELECTRODE; STAINLESS STEEL;

D O I：

10.5006/1.3585226

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A high-energy electron linear accelerator (LINAC) generated intense electromagnetic bremsstrahlung that approximated the gamma dose rate in the core of a boiling water nuclear reactor (BWR). Experiments with polymer-free platinum, pH, and silver/ silver chloride electrodes at BWR operating temperatures in a stainless steel (SS) autoclave showed reversible, stable voltage offsets that depended on water chemistry and radiation intensity. These changes occurred slowly, and the potentials required several minutes to attain a steady state. Even with a remote reference, it is not possible to determine unequivocally the magnitude and direction of the shift for a specific electrode, but these measurements are most consistent with substantial (100 mV) offsets for silver/silver chloride electrodes, and relatively stable operation for zirconia-membrane pH electrodes. Radiation had no significant effect on high-temperature conductivity. Chemical interactions with radiolytic species offer the simplest explanation for the

引用

页码：115 / 122

页数：8

共 9 条

[1] CONSTRUCTION AND THERMODYNAMIC PERFORMANCE OF AN AG-AGCL REFERENCE ELECTRODE FOR USE IN HIGH-TEMPERATURE AQUEOUS ENVIRONMENTS CONTAINING H-2 AND H-2S [J].