While donning the positive pressure self-contained breathing apparatus, you discover that the air cylinder pressure gauge and the regulator pressure gauge differ from each other by 500 psi. Which of the listed actions should you consider as appropriate?
• Positive pressure self-contained breathing apparatus (SCBA) safety requirements • Importance of accurate air cylinder pressure readings for safe entry • Manufacturer and safety guidelines when gauges disagree significantly
• What does a 500 psi difference between two pressure gauges suggest about the condition of the system? • If you cannot be sure which gauge is correct, what is the safest way to proceed before using the SCBA? • Which options would restore your confidence that the pressure indication is accurate and the unit is safe to use?
• Verify which choices actually correct the cause of the disagreement, not just guess a pressure value. • Check which action would most likely be consistent with manufacturer’s instructions and safety procedures for SCBA use. • Eliminate any option that still leaves you uncertain about the true cylinder pressure.
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