API Gravity
API Gravity is a standard way to measure how heavy or light petroleum liquids are compared to water. Think of it like a grading system for oil - it helps oil companies know the quality and type of oil they're dealing with. The higher the API Gravity number, the lighter and generally more valuable the oil is. For example, light crude oil that's good for making gasoline has a high API Gravity, while heavy oil used for asphalt has a low API Gravity. This measurement is important because it affects how oil is processed, transported, and priced.
Examples in Resumes
Conducted quality control testing including API Gravity measurements for crude oil samples
Monitored and documented API Gravity readings for incoming petroleum shipments
Developed standard operating procedures for API Gravity testing and reporting
Typical job title: "Petroleum Quality Control Specialists"
Also try searching for:
Where to Find Petroleum Quality Control Specialists
Professional Organizations
Job Boards
Professional Networks
Example Interview Questions
Senior Level Questions
Q: How does API Gravity impact oil processing and production strategies?
Expected Answer: A senior professional should explain how different API Gravity values affect refining processes, transportation methods, and production planning. They should discuss how this knowledge influences business decisions and operational strategies.
Q: How would you implement a quality control program based on API Gravity measurements?
Expected Answer: Should demonstrate understanding of setting up testing protocols, training staff, maintaining equipment calibration, and establishing acceptance criteria for different oil grades.
Mid Level Questions
Q: What are the common problems you might encounter when measuring API Gravity?
Expected Answer: Should be able to discuss temperature effects, contamination issues, and proper sampling techniques, along with troubleshooting methods.
Q: How do you ensure accurate API Gravity measurements?
Expected Answer: Should explain proper testing procedures, equipment calibration, temperature corrections, and quality control measures.
Junior Level Questions
Q: What is API Gravity and why is it important?
Expected Answer: Should explain that it's a measure of oil density compared to water, and how it helps determine oil quality and value.
Q: What equipment is used to measure API Gravity?
Expected Answer: Should describe basic testing equipment like hydrometers and the proper steps for taking measurements.
Experience Level Indicators
Junior (0-2 years)
- Basic oil sampling techniques
- Standard API Gravity testing procedures
- Recording and reporting test results
- Understanding of safety protocols
Mid (2-5 years)
- Advanced testing methodologies
- Quality control procedures
- Equipment calibration
- Data analysis and trending
Senior (5+ years)
- Test program development
- Staff training and supervision
- Quality system management
- Process optimization
Red Flags to Watch For
- Unfamiliarity with basic oil testing procedures
- Lack of knowledge about safety protocols
- Poor understanding of quality control principles
- No experience with laboratory equipment
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