Introduction part on radiation laboratory in general.

  State some details regarding the actual case study. Introduction on X-rays & Gamma radiation (focus on penetration) and ionization process. (effects on humans/cells/..) Health hazards regarding Gamma radiation on public. Usage of Pb as shielding (use 3 examples: Hospitals, other laboratory, … etc) Statement of aim or problem: Explain the health hazard regarding Pb to employees & probably public. Bow-tie diagram showing that such (counter-measure is imposing other hazard) Our aim is to analyze the situation ? propose control measures for the hazards in counter measure.