Which components in a gaseous oxygen system are vented to blow out plugs in the fuselage?

In a gaseous oxygen system used in aircraft, venting is a crucial safety feature designed to prevent the buildup of excessive pressure that could lead to system failures or hazards. The correct choice indicates that pressure gauges are vented to blow out plugs located in the fuselage.

Pressure gauges in oxygen systems monitor the pressure of the oxygen being stored. If the pressure within the system exceeds a predetermined limit, this excess pressure can be released through blow out plugs. This safety mechanism ensures that there is no risk of rupture or catastrophic failure of the system, as it allows for controlled venting of pressure.

The design of these components ensures that while the system remains operable, any excess pressure is safely expelled outside the aircraft, thereby maintaining the integrity of the oxygen system and protecting both the aircraft and its occupants.