Risk Assessment & Mitigation Flashcards
7 cards from real CLS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Risk Assessment & Mitigation flashcards as text
In the context of lubrication risk, what does the term 'false brinelling' specifically describe?
Answer: Wear damage in stationary bearings caused by vibration-induced micro-motion
False brinelling occurs when stationary bearings experience micro-sliding from vibration, removing lubricant and creating wear scars that resemble Brinell indentations.
A plant manager asks about the risk of using a lubricant with a viscosity index (VI) of 85 versus one with a VI of 150 in equipment with wide operating temperature swings. What is the key risk with the low-VI lubricant?
Answer: It will thin excessively at high temperatures, risking insufficient film thickness
A low VI lubricant thins dramatically at elevated temperatures, potentially dropping below the minimum viscosity needed to maintain a protective lubricant film.
Which risk assessment tool uses a bow-tie diagram to visually connect threats, barriers, and consequences in a lubrication management context?
Answer: Bow-Tie Risk Analysis
The Bow-Tie method visualizes hazard scenarios by linking threat causes on the left, the hazard event in the center, and consequences on the right, with barriers shown on each side.
What is the most effective method to mitigate the risk of incorrect lubricant application at the point of use?
Answer: Implementing color-coded labeling on lubricant containers and fill points
Color-coded labeling systems create a visual link between the correct lubricant container and its designated fill point, reducing cross-contamination and wrong-lubricant errors.
When performing a risk assessment for a new lubricant storage facility, which hazard classification primarily determines ventilation and fire suppression requirements?
Answer: The lubricant's flash point and flammability classification
Flash point determines a lubricant's fire hazard class, which directly drives regulatory requirements for storage ventilation, fire suppression, and electrical classification.
A reliability engineer notes that a critical pump has experienced three bearing failures in 18 months. Using the 5-Why technique, what is the FIRST step?
Answer: Ask why the bearing failed to begin tracing back to the root cause
The 5-Why process begins by asking 'why did the failure occur?' and repeating the question for each answer until the root cause is identified.
Which oil analysis test result most directly indicates a risk of corrosive wear in a gearbox?
Answer: High total acid number (TAN) combined with presence of copper (Cu) and lead (Pb)
High TAN indicates acid formation in degraded oil, and elevated copper and lead suggest the acid is actively corroding brass/bronze and bearing alloy components.