The research on the alanine-ESR dosimetric system for industrial radia
tion processing started in 1983 in our institute. Since 1988, the syst
em has been utilized as a transfer standard to establish a program for
the National Dose Assurance Service (NDAS), which is used to unify th
e quantity of absorbed dose in high-level dosimetry all over China. To
date, more than 50 facilities have participated in the program and ov
er 400 dose checks have been carried out. Copyright (C) 1996 Elsevier
Science Ltd