Class 4 (4th Engineer) MEP 📅 Aug 2024

Exam Question

Oil traces have heen found in the condensate tank of an auxiliary boiler

(a) Describe the procedure to trace the source of contamination. (8)

(b) List the contamination with reasons for its occurrence and the precaution to be taken to ensure safety of the boiler. (8)

Reference Answer

### Part (a): Procedure to Trace the Source of Contamination
A systematic procedure must be followed to quickly identify and isolate the source of oil contamination in the boiler condensate system. The primary indication is an oil sheen or layer observed in the cascade/observation tank.
1. **Initial Confirmation and Assessment**:
* Visually confirm the presence and quantity of oil in the observation tank. Attempt to identify the type of oil (e.g., black heavy fuel oil, clearer lube oil, or specific cargo oil) as this provides a strong clue to the potential source.

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