Exam Question
(a) Describe maintenance to be carried out on safety valve of Auxiliary Boiler to keep them in good order. (10)
(b) Describe procedure for setting safety valve. (6)
Class 4 (4th Engineer)
MEP
📅 Apr 2024
Reference Answer
### (a) Maintenance of Auxiliary Boiler Safety Valves (10 Marks)
Maintenance on boiler safety valves is critical for the safety of the vessel and personnel. It is divided into routine in-service checks and periodic overhauls, typically conducted during surveys.
**1. Routine In-Service Maintenance (Weekly/Monthly):**
* **Easing Gear Operation:** The valve should be manually lifted using the easing gear when the boiler is under sufficient steam pressure (at least 75% of working pressure). This confirms that the valve disc and spindle are not seized in the body. A sharp, crisp closing sound upon release indicates good condition.
Maintenance on boiler safety valves is critical for the safety of the vessel and personnel. It is divided into routine in-service checks and periodic overhauls, typically conducted during surveys.
**1. Routine In-Service Maintenance (Weekly/Monthly):**
* **Easing Gear Operation:** The valve should be manually lifted using the easing gear when the boiler is under sufficient steam pressure (at least 75% of working pressure). This confirms that the valve disc and spindle are not seized in the body. A sharp, crisp closing sound upon release indicates good condition.
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