Final answer:
All LOX/gaseous oxygen operations require two or more qualified persons, except for removing and replacing aircraft LOX converters.
Step-by-step explanation:
All LOX/gaseous oxygen operations, except for removal and replacement of aircraft LOX converters, are required to be performed by two or more qualified persons. This ensures safety and accountability in handling a potentially hazardous substance like gaseous oxygen.
Having multiple qualified persons involved in LOX operations helps to minimize the risk of accidents, ensures proper procedures are followed, and provides a system of checks and balances.
For the specific task of removing and replacing aircraft LOX converters, the regulations do not specify the number of qualified persons required. It is important to follow manufacturer guidelines and established procedures when carrying out this task.