CLS CLS Lubricant Storage, Handling & Contamination Control 1 — Questions and Answers
Question 1: What is the recommended maximum storage temperature for most mineral-based lubricants to prevent accelerated oxidation?
- Below 40°C (104°F) (Correct answer)
- Below 80°C (176°F)
- Below 60°C (140°F)
- Below 20°C (68°F)
Correct answer: Below 40°C (104°F)
Storing lubricants below 40°C prevents thermal stress that accelerates oxidation and additive degradation in storage.
Question 2: The best practice for outdoor drum storage is to position horizontal drums with the bungs at which orientation?
- 3 o'clock and 9 o'clock (horizontal, side bungs submerged) (Correct answer)
- 12 o'clock (bung on top)
- 6 o'clock (bung on bottom)
- Any position is acceptable
Correct answer: 3 o'clock and 9 o'clock (horizontal, side bungs submerged)
Positioning bungs at the 3 and 9 o'clock positions keeps them submerged in oil, preventing moisture ingress through the seals during temperature cycling.
Question 3: Which contamination control device is recommended on lubricant storage tank vent lines to prevent particulate and moisture ingress?
- Desiccant breather (Correct answer)
- Check valve
- Pressure relief valve
- Flow restrictor
Correct answer: Desiccant breather
Desiccant breathers filter particulates and absorb moisture from air entering storage tanks during thermal breathing cycles.
Question 4: What is the primary reason dedicated, color-coded dispensing equipment is recommended in lubrication programs?
- To prevent cross-contamination between different lubricant types (Correct answer)
- To meet OSHA color-coding requirements
- To improve dispensing speed
- To identify equipment ownership
Correct answer: To prevent cross-contamination between different lubricant types
Color-coded equipment ensures each lubricant has dedicated dispensing tools, preventing inadvertent mixing of incompatible products.
Question 5: According to best lubrication practices, what is the maximum recommended shelf life for a lithium complex grease stored under ideal conditions?
- 2 years (Correct answer)
- 5 years
- 6 months
- 10 years
Correct answer: 2 years
Most lubricating greases, including lithium complex, have a recommended shelf life of approximately 2 years when stored correctly.
Question 6: The 'first-in, first-out' (FIFO) inventory practice in lubricant storage rooms is primarily intended to:
- Prevent using expired or degraded lubricants (Correct answer)
- Reduce storage room footprint
- Comply with EPA regulations
- Minimize delivery frequency
Correct answer: Prevent using expired or degraded lubricants
FIFO ensures that lubricants with the earliest purchase or fill dates are used first, preventing inventory from exceeding shelf life.
CLS CLS Lubricant Storage, Handling & Contamination Control 1
What is the recommended maximum storage temperature for most mineral-based lubricants to prevent accelerated oxidation?