Hey it's me again, as I've said before I'm new to Creation Kit but I am not new to the concept of spawning things. Whenever I need to spawn in an item for 3D simulations (water, spheres, billboard textures, ect) I use an emitter that just shoots the object how ever many times I want and velocity I want. I have not been able to locate a generic emitter in CK but I know there are emitters in the game. But if you can't find an emitter I would suggest creating your own object (the object doesn't even have to have a model) with the explosion properties and drop it in the game where you want it to go off then link the scripts to it. That way it's already in the game and has no need to be spawned in.