Exam Question

### (a) Safety Devices on a 2-Stage Air Compressor
Marine two-stage air compressors are high-pressure machines vital for engine starting, control air, and service air. Due to the high pressures and temperatures involved, they are fitted with several critical safety devices to protect the machinery and personnel. A failure in a compressor system can lead to mechanical damage, fire, or even a catastrophic explosion.
**1. Stage Relief Valves (1st and 2nd Stage)**
* **Location:** A relief valve is fitted on the discharge side of each stage, i.e., after the 1st stage cylinder (before the intercooler) and after the 2nd stage cylinder (before the aftercooler).