Steam driven pumps are considered, by...

Steam driven pumps are considered, by regulations, sources of vapor ignition if the steam temperature is at least what temperature?

🔍 Key Concepts

• Ignition sources in cargo handling spaces for combustible or flammable vapors • How steam temperature compares to common reference points like boiling water (212° F / 100° C) and metal surface ignition risks • Regulatory treatment of “hot surfaces” and minimum temperatures that can ignite vapors

💭 Think About

• Think about whether the regulation is asking about when water boils or when a surface is hot enough to ignite vapors—are those the same thing? • Compare the listed temperatures: which ones are simply phase-change reference points (like boiling), and which suggest a significantly hot metal surface? • Consider which answer choices are essentially duplicates in different units, and which choice stands out as representing a clearly higher ignition risk.

✅ Before You Answer

• Identify which options are just boiling point equivalents (e.g., 212° F and 100° C) and think about whether merely boiling water temperature is typically enough to be classed as an ignition source by regulation. • Ask whether regulations tend to be conservative and use a clearly elevated temperature to define a “hot surface” ignition source, rather than a temperature that ordinary steam systems routinely reach. • Before choosing, verify in your reference material what approximate surface temperature is often associated with ignition hazard for flammable vapors, and match that to the nearest listed value.

🔍 Key Concepts

💭 Think About

✅ Before You Answer