Riser assemblies with utility conduits and methods for operating a riser assembly

A riser assembly comprising:

• a container wall at least partially circumscribing a reservoir configured to hold a pressurized fluid;
• a utility conduit horizontally traversing through a width of the reservoir and extending between opposing areas of a sidewall of the container;
• a power-utilizing device disposed at least partially within the utility conduit and isolated from the reservoir;
• and
• an electrical conduit traversing through at least a portion of the reservoir and communicating between the utility conduit and a region exterior to the container.

A method for operating a riser assembly, the method comprising:

• at least partially filling a reservoir within a container of the riser assembly with fluid, the riser assembly comprising:
• the container including the reservoir, the reservoir configured to hold a pressurized fluid;
• a signal conduit traversing through the reservoir, the signal conduit defining therein a channel, the signal conduit isolating the channel from the reservoir;
• and
• a utility conduit extending horizontally through the reservoir from an opening defined in a sidewall area of the container to an opposing sidewall area of the container, the utility conduit traversing a width of the reservoir;
• and
• selectively opening a valve disposed within the utility conduit, the valve recessed relative to an exterior surface of the container.