Exposure in Industrial Radiography

Radioisotope: Activity: Decay time:

Shielding material: Room height (m): Room width (m):

Floor thickness: (cm) Wall thickness: (cm)

Source in C3: d1: (m) s1: (m)

A1: A2: A3: A4: A5:

B1: B2: B3: B4: B5:

C1: C2: C3: C4: C5:

D1: D2: D3: D4: D5:

E1: E2: E3: E4: E5:

Exposure is done at the floor, in the center of each room and in the same source’s vertical plane.

1- Point isotropic source was considered.

2- Build-up factors for gamma energies over 500 keV were calculated using Taylor’s equation.

3- Build-up factors for gamma energies between 100 keV and 500 keV were calculated using Trubey’s table.

Not to be reproduced without the written permission of the Office of Environmental Health and Safety

215 Huron Street, Toronto, Ontario, Canada M5S 1A2

Created by: Hector Rocca

Maintained by: Gustavo Moriena