Final answer:
The FIRST step to cut out a door that is stuck open on a revenue train stopped at a station would be to assess the situation and ensure the safety of passengers and personnel.
Step-by-step explanation:
The FIRST step to cut out a door that is stuck open on a revenue train stopped at a station would be to assess the situation and ensure the safety of passengers and personnel. This includes evaluating whether there are any other alternatives to cutting out the door, such as unlocking mechanisms or resolving the issue through maintenance or repairs.
If it is determined that cutting out the door is necessary, the next step would be to secure the train to prevent any movement during the cutting process. This can be done by engaging the emergency braking system and applying wheel chocks to keep the train stationary.
After ensuring safety and securing the train, the final step would be to utilize appropriate cutting tools and techniques to remove the door. This may involve using power tools such as saws or hydraulic cutters, while ensuring that the surrounding structure of the train is not damaged.