What is the minimum corner radius required for repair plates used in lapped patch repairs?

What is the minimum corner radius required for repair plates used in lapped patch repairs?

• A. A) Radius of 1 inch
• B. B) Radius of 2 inches
• C. C) Radius of 3 inches
• D. D) Radius of 4 inches

Answer: (B)

The minimum corner radius required for repair plates used in lapped patch repairs is specified to be a radius of 2 inches. This requirement is critical because a larger corner radius helps to reduce stress concentrations at the edges of the repair plates, which can lead to cracking or failure over time. When performing repairs on aboveground storage tanks, employing a proper corner radius ensures the integrity of the patch repair by promoting better load distribution and minimizing potential weak points that could arise from sharp corners. By adhering to this 2-inch radius guideline, inspectors and repair personnel can enhance the durability of the repair and contribute to the overall safety and reliability of the storage tank.

The minimum corner radius required for repair plates used in lapped patch repairs is specified to be a radius of 2 inches. This requirement is critical because a larger corner radius helps to reduce stress concentrations at the edges of the repair plates, which can lead to cracking or failure over time.

When performing repairs on aboveground storage tanks, employing a proper corner radius ensures the integrity of the patch repair by promoting better load distribution and minimizing potential weak points that could arise from sharp corners. By adhering to this 2-inch radius guideline, inspectors and repair personnel can enhance the durability of the repair and contribute to the overall safety and reliability of the storage tank.