What is the acceptable pressure gauge reading range for an oxygen system after a 6-hour period if initially read 460 PSI?

In this scenario, understanding the behavior of oxygen systems under pressure is crucial. After an extended period, there can be some pressure drop due to various factors such as temperature changes and minor leaks. Initially reading 460 PSI, a decline in pressure is expected, and it's essential to determine a range that reflects a reasonable and acceptable level after six hours.

The correct range of 445 to 450 PSI suggests a minor decrease from the initial reading, which falls within normal operating conditions. This range accounts for the potential loss of pressure while still remaining safely above the threshold that would indicate a potentially problematic leak or system failure. Staying within this range means the system is still functional and adequate for use.

Understanding these dynamics is key for proper monitoring and maintenance of oxygen systems in aviation. This knowledge allows personnel to evaluate system integrity effectively, ensuring that the oxygen supply remains safe and reliable.