Exam Question
Where a waste heat boiler is subject to persistent leakage at the tube / tube plate connection, suggest with sketches, methods of effecting a permanent repair. (16)
Class 4 (4th Engineer)
MEP
📅 Jan 2025
Reference Answer
Persistent leakage at the tube/tube plate connection in a waste heat boiler is a serious operational and safety concern. It indicates a failure in the integrity of the pressure boundary, potentially leading to reduced boiler efficiency, water loss, and in severe cases, catastrophic failure. A "Surveyor-Grade" permanent repair requires a comprehensive approach, from initial assessment to post-repair testing and future prevention.
### **1. Preliminary Assessment and Safety Precautions**
Before commencing any repair, a thorough assessment and strict safety protocols are paramount:
* **Isolate Boiler**: De-energize and lock out all steam, water, and exhaust gas connections.
### **1. Preliminary Assessment and Safety Precautions**
Before commencing any repair, a thorough assessment and strict safety protocols are paramount:
* **Isolate Boiler**: De-energize and lock out all steam, water, and exhaust gas connections.
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