Exam Question
Enumerate at least five common faults in welding and measures to prevent. Substantiate your answers with suitable sketches. (16)
Class 4 (4th Engineer)
MEP
📅 Jul 2022
Reference Answer
Welding is a critical process in ship construction and repair, and the integrity of the weld is paramount for the structural safety of the vessel. Common faults can compromise this integrity, leading to potential catastrophic failures. A skilled welder must be able to identify, prevent, and rectify these defects. The following are five common welding faults, their causes, and the corresponding preventive measures.
### 1. Porosity
**Definition:** Porosity is the formation of small, typically spherical, cavities or pores within the weld bead. These are caused by the entrapment of gas (such as nitrogen, oxygen, or hydrogen) during the solidification of the molten weld pool.
**Causes:**
### 1. Porosity
**Definition:** Porosity is the formation of small, typically spherical, cavities or pores within the weld bead. These are caused by the entrapment of gas (such as nitrogen, oxygen, or hydrogen) during the solidification of the molten weld pool.
**Causes:**
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