Exam Question

### **1. Description of an Air Receiver**
An Air Receiver, also known as an air bottle or starting air vessel, is a fusion-welded cylindrical pressure vessel with dished ends, constructed from high-tensile steel. It is a critical component of the ship's compressed air system, designed and built in accordance with Classification Society rules.
**Primary Functions:**
* **Storage:** To store a large volume of compressed air at high pressure (typically 30 bar) for starting the main and auxiliary engines. Regulations (e.g., SOLAS) mandate sufficient capacity for a specific number of engine starts without recharging the compressors (e.g., 12 consecutive starts for a reversible main engine).