A personal dosemeter is aligned facing the radiation source. Normally, the best location for the dosemeter is on the employee’s chest, attached to work clothes. When lead appron is used, a personal dosemeter is placed on the outside. In work where the exposure level is above 20mSv, another personal dosemeter must be used beneath the lead appron in order to assess the effective dose.
Radioactive contamination of the dosemeter should be avoided. In case of contamination, the dosemeter must be immediately cleaned and this must be reported upon the return of the dosemeter.