Tracers only burn for a certain length of time/distance. I think the tanks are too far away for the tracers to still burn. Also fuel has to be at the right ratio, 14.7:1, to combust.
Yeah. I knew about the proper ratio thing, but didn’t know what it was in those tanks at the scene.
I work at Coors in malting and we’re drilled every year about explosive combustion when it comes to grain dust in silos.
Also, when we had a Tiger Cruise from Hawaii to San Diego, there was a live fire demo. I watched tracer fire bouncing off the water for quite a distance from the ships behind mine. Perhaps some tracers are made with more phosphorus or whatever they use.