Shielding Integrity Surveys

Shielding Integrity Surveys

 

Once approval of the shielding design is granted and all additional shielding material has been installed, the State requires that a shielding integrity survey be performed to confirm that the shielding has been installed according to the approved design specifications. The survey is conducted using a radioactive source of Technetium-99m in a shielded vial. Sufficient activity within the vial when exposed to each shielded barrier yields radiation levels beyond the barrier that can be used to determine both the equivalency of the shielding as well as the presence of any voids. Radiation emerging through the barrier portions being tested is detected using a survey meter with attached PGM pancake probe. Typically, shielding integrity surveys are not indicated for mammography rooms, bone densitometry rooms and some C-Arm procedure rooms. The scattered radiation emitted from these units is measured during the initial physics survey and a certificate is provided detailing the results.

Password Reset
Please enter your e-mail address. You will receive a new password via e-mail.