The nuclear industry painted lead bricks are advanced radiation-shielding components specifically designed for high-radiation environments. They are composite protective materials created by applying specialized functional coatings—such as epoxy resin, polyurethane, or dedicated decontaminable finishes—to the surfaces of conventional high-density lead bricks. Most industrial-grade lead bricks feature V-shaped wedges or rectangular interlocking designs, facilitating rapid assembly into shielding walls; this ensures structural stability without the need for additional adhesives and allows for flexible layout adjustments. While retaining lead's exceptional shielding capabilities against X-rays and gamma rays, the coating addresses issues inherent to pure lead, such as susceptibility to oxidation, difficulty in cleaning, and surface abrasion, making these bricks widely applicable in nuclear power plants, nuclear fuel cycle facilities, radiological laboratories, and medical radiology departments.
Load-bearing capacity: Lead bricks have a very high density (approximately 11.34 g/cm³); the load-bearing capacity of the floor or supporting structure must be verified before installation, and steel framework supports should be added if necessary.
Sealing: Although the lead bricks interlock tightly, in high-radiation areas, it is recommended to apply flexible sealant to the joints or cover them with lead foil to prevent radiation leakage through gaps.
Regular inspection: Periodically inspect the coating for scratches or peeling. If the base material becomes exposed, repair the coating promptly to prevent the spread of oxidation.
Safety precautions: Despite the protective coating, it is recommended to wear gloves during handling to avoid direct contact with lead dust (especially during cutting or grinding) and to adhere to safety protocols for handling heavy metals.
Material | Lead |
Purity | ≥99.5% |
Density | 11.34g/cm3 |
Size | Height: 10 cm, Length: 20 cm, Depth: 5 cm/customized |
Thickness | 30-100mm |
Surface | Grinding |
Standard | ASTM, DIN, GB |
Certification | ISO 9001 |
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