Lead Purification

Lead sheets produced using standard crucibles and temperatures (360°C - 380°C) cannot completely purify the lead and fail to remove other metals and materials present within. Such lead sheets are not suitable for use according to radiation regulations. The temperature of molten lead at 320°C is raised to its boiling point of 1749°C using specialized closed-system rotary furnaces, ensuring complete purification from other materials and transforming it into pure lead.

 

High-purity lead sheets provide enhanced radiation safety. Purity analysis is conducted for each casting and completed by quality control personnel through rigorous inspection processes.

 

The shielding of radiology departments is guided by the Nuclear Regulatory Authority's "Guidelines on Considerations for the Design and Shielding Conditions of Rooms Where Medical Radiology Applications Are Conducted" (RSGD-KLV-007). This includes:

 

“Shielding procedures for radiology units are performed using calculation techniques outlined in NCRP 49 and NCRP 147 documents. The shielding thickness is calculated in terms of concrete and lead. The density of the concrete used for shielding must be at least 2.35 g/cm³, while the density of lead must be 11.3 g/cm³ (with a minimum purity of 99%). Practical information regarding room designs and shielding thicknesses for applications performed with radiology devices is provided below. If the equipment characteristics, operating conditions, and room conditions differ from the criteria specified in the example, the design and shielding processes must comply with the above-mentioned guidelines and technical documentation.”

 

“High-purity lead sheets are used for radiation insulation purposes.”