🔍 Key Concepts

• Pressure hazards in piping systems and what can happen if a line is opened while still under pressure • Standard safety steps before opening or disconnecting any pressurized system (steam, fuel, hydraulics, etc.) • The difference between preventing an accident and responding to one after it happens

💭 Think About

• Ask yourself: if this pipeline still has fluid or gas under pressure, what could happen the instant you break the joint? Which choice directly prevents that hazard? • Which option is a proactive safety control (eliminates the danger) versus a reactive or minor housekeeping step? • Think about common lockout/tagout principles: what must always be done before working on any pressurized equipment?

✅ Before You Answer

• Verify which choice deals directly with eliminating pressure/energy in the system before opening it • Check which options, while useful, would not stop a sudden spray, burst, or blowout from the line • Confirm which answer reflects a standard industrial safety practice for working on pipelines and pressurized systems