What is the standard protocol regarding welding over brazed or soldered joints?

The standard protocol regarding welding over brazed or soldered joints is that it is not permitted. This is due to the potential for compromising the integrity of the joint and the surrounding materials. When a welded joint is made over a brazed or soldered joint, the heat from the welding process can adversely affect the properties of the underlying joint and the base materials.

Brazing and soldering involve the use of lower melting point materials, which can become re-melted or structurally weakened when subjected to the higher temperatures involved in welding. The resultant joint may not maintain the required strength or durability, leading to potential failures in structural integrity.

It is crucial in aircraft construction and maintenance to adhere to strict protocols to ensure safety and reliability, and this standard avoids the risks associated with welding over joints that are not designed to withstand such processes.