Class 1 (Chief Engineer) Engineering Management 📅 Mar 2022

Exam Question

Periodical Lub oil analysis, its correct interpretation and corrective measures are of critical significance for the maintenance of marine machineries. With reference to the modern analysis techniques employed for the condition analysis of LO, discuss the following:

(a) Elemental (Spectrometric) Analysis

(b) Fourier Transform Infrared (FIR) Spectroscopy

(d) Base Number Vs Acid Number

Reference Answer

### Introduction
Regular analysis of lubricating oil is a cornerstone of modern Condition Based Maintenance (CBM) and Predictive Maintenance (PdM) strategies on board marine vessels. It provides invaluable insight into the health of both the machinery and the lubricant itself. By trending key parameters, potential failures can be predicted and rectified before they escalate into catastrophic events, ensuring operational safety, reliability, and cost-effectiveness. The following sections detail modern analysis techniques as employed by shoreside laboratories.
### (a) Elemental (Spectrometric) Analysis
**1. Principle:**

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