CLS Risk Assessment & Mitigation 3

Question 1

In a condition-based maintenance program, what is the primary purpose of establishing alarm limits for oil analysis parameters?

Accepted Answer

To trigger timely corrective action before catastrophic failure occurs

Answer

Alarm limits signal when oil analysis results deviate enough from baseline to warrant investigation or corrective action before failure occurs.

Question 2

Which type of bearing failure is most commonly associated with lubricant starvation risk?

Accepted Answer

Adhesive wear and smearing

Answer

Lubricant starvation removes the protective film, causing direct metal-to-metal contact and adhesive wear (smearing) on rolling element surfaces.

Question 3

What is the PRIMARY risk when lubricants from two different suppliers are mixed in a reservoir without compatibility testing?

Accepted Answer

Additive packages may react adversely, causing precipitation or foam

Answer

Different additive chemistries can react when mixed, potentially causing sludge, precipitation, foam, or loss of critical protective properties.

Question 4

A facility stores lubricants in an unheated outdoor area. Which environmental risk poses the greatest threat to lubricant quality?

Accepted Answer

Water condensation inside containers from temperature cycling

Answer

Temperature cycling causes air inside containers to expand and contract, drawing in moist air that condenses as water contamination inside the drum.

Question 5

When evaluating the risk of grease over-lubrication in electric motor bearings, what is the most likely consequence?

Accepted Answer

Overheating due to churning losses and potential insulation damage

Answer

Excess grease causes churning, which generates heat that can overheat the bearing and damage motor windings if grease contacts them.

(CLS) Certified Lubrication Specialist Practice Test