A fillet weld patch is installed on a vessel with a 64" inside diameter and a wall thickness of 0.370". What is the minimum allowed spacing between this patch and another nearby patch?

A fillet weld patch is installed on a vessel with a 64" inside diameter and a wall thickness of 0.370". What is the minimum allowed spacing between this patch and another nearby patch?

• A. 8.4"
• B. 11.8"
• C. 13.8"
• D. 19.5"

Answer: (C)

To determine the minimum allowed spacing between fillet weld patches on a pressure vessel, it's essential to refer to the relevant codes and standards that govern weld spacing and repair procedures. For a vessel with an inside diameter of 64 inches and a wall thickness of 0.370 inches, specific calculations based on these dimensions are employed to establish the required spacing guidelines. The minimum spacing between weld patches is often defined in relation to the size and characteristics of the patches being used, as well as the diameters and thicknesses of the vessel. In this instance, the correct answer indicates that the minimum spacing should be at least 13.8 inches. This value is derived from guidelines that ensure structural integrity when multiple repairs are made on the same surface, preventing issues such as stress concentration and ensuring adequate weld quality. In essence, the 13.8-inch minimum spacing reflects a standard practice aimed at maintaining the strength and stability of the pressure vessel after repairs, ensuring that each patch can function effectively without adversely interacting with adjacent patches. The spacing requirements help to ensure that the operational and safety aspects of the pressure vessel remain uncompromised during its service life.

To determine the minimum allowed spacing between fillet weld patches on a pressure vessel, it's essential to refer to the relevant codes and standards that govern weld spacing and repair procedures. For a vessel with an inside diameter of 64 inches and a wall thickness of 0.370 inches, specific calculations based on these dimensions are employed to establish the required spacing guidelines.

The minimum spacing between weld patches is often defined in relation to the size and characteristics of the patches being used, as well as the diameters and thicknesses of the vessel. In this instance, the correct answer indicates that the minimum spacing should be at least 13.8 inches. This value is derived from guidelines that ensure structural integrity when multiple repairs are made on the same surface, preventing issues such as stress concentration and ensuring adequate weld quality.

In essence, the 13.8-inch minimum spacing reflects a standard practice aimed at maintaining the strength and stability of the pressure vessel after repairs, ensuring that each patch can function effectively without adversely interacting with adjacent patches. The spacing requirements help to ensure that the operational and safety aspects of the pressure vessel remain uncompromised during its service life.