The electrical transport properties, such as direct current (dc) electrical conductivity (sigma), dielectric constant (epsilon＇), and dc current-time characteristics of unirradiated and gamma-irradiated pure and NiCl2-doped PVA were studied in the temperature range of 26-155 degrees C. Quantitative analysis was carried out to determine the thermal activation energy of the conduction process, drift mobility, and carrier concentration. The thermally activated mobility of charge carriers is confirmed from calculations of drift mobility at different gamma-doses and temperatures. The results obtained revealed that gamma-irradiation enhances the conductivity. The dielectric constant data at different temperatures before and after irradiation can be attributed mainly to the changes in the intra- and intermolecular interactions. The dc conductivity at 30 and 40 degrees C, activation energy in low temperature region I, and epsilon＇(max) for 20 wt % NiCl2 proved to be dose-dependent. The obtained data suggests that these materials may have an application in dosimetry.