🔍 Key Concepts

• Reid Vapor Pressure (RVP) is a standardized lab test used for many petroleum products • Difference between vapor pressure and flash point of a liquid • RVP relates to how much vapor a liquid produces at a specified temperature and test condition

💭 Think About

• Which choice talks about a standardized way of measuring how readily a liquid gives off vapor under set conditions, rather than describing pressure on tank walls or hoses? • Look at the options that mention temperature and vapors: which one sounds like a definition of a test/measurement, and which one sounds like a description of a physical property like flash point? • For cargo handling safety, why would knowing Reid Vapor Pressure be important—what hazard is it telling you about?

✅ Before You Answer

• Identify which options refer to pressure exerted on structures (tank sides/hoses) and which refer to vapor generation characteristics of a liquid • Separate flash point (lowest temperature a liquid gives off ignitable vapors) from vapor pressure (tendency to form vapor) • Check which option suggests a measured value at a specified temperature rather than a general statement about lowest temperature or physical loading pressure