Class 4 (4th Engineer) MEP 📅 Aug 2025

Exam Question

Oil traces have been 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

### (a) Procedure to Trace the Source of Oil Contamination
The detection of oil in the auxiliary boiler condensate tank is a serious condition requiring immediate and systematic action to prevent catastrophic boiler failure. The following procedure outlines the steps to trace the source of the leak.
**1. Immediate Actions and Confirmation:**
* **Confirm Presence:** Visually verify the presence of an oil film or globules in the condensate observation/cascade tank. Oil will appear as a sheen or dark layer on the surface of the water.

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