Class 5 Boiler Practice Exam

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Can seal welds be used to prevent leakage on B31.5?

Yes, without concerns
No, they should not be used at all
Yes, but they should not be considered as contributing strength
No, they must be reinforced with another method

The correct answer is: Yes, but they should not be considered as contributing strength

Seal welds can be utilized to prevent leakage in systems governed by B31.5, specifically in areas where ensuring the integrity of the connection is crucial. However, it's important to note that while seal welds are effective for leak prevention, they should not be relied upon as a structural reinforcement for the joint. This means that while they can help maintain a tight seal in piping systems, they are not counted as contributing to the strength or load-bearing capacity of the joint. Understanding the limitations of seal welds is essential. These welds are primarily intended for leak-tightness and can be very effective; however, over-relying on them for structural support could lead to potential failures if the connected components are subjected to stress or movement. Thus, it is critical to recognize that while seal welds can enhance the sealing capabilities of a joint, they should be used in conjunction with proper construction techniques and materials that provide the necessary strength.