Personally I don't think it's too similar to 392. Though maybe I could expand the backstory for the physics laboratory to have also included the anomaly generators, or something.
1. The generator doesn't really generate energy, it generates anomalies. Imagine that the sphere inside the machine is a container for immense gravitational energy or some other scifi mumbo jumbo. Basically an explosion kept from exploding by the machine, and the mechanism for doing that - for some reason - requires that you constantly supply the explosion with more energy. If you stop doing that, the machine shuts down and the explosion is no longer stopped from exploding. A no win scenario that gets just worse and worse if you do nothing about it. The backstory I had in mind was that someone realized what they had done by starting the machine, and juryrigged a mechanism that tries to release the energies slowly by venting extra energy by generating the random spatial anomalies, and even built a system that would allow him or her to locate the created anomalies.
2. The time an anomaly lasts is quite random, depending on how big the anomaly is and how much it interacts with the surrounding environment. When an anomaly is created, it has a set level of energy within, and that energy is depleted when it moves an object or crushes an animal. When the energy reaches <some level>, it will "trigger" and use the rest of its energy by exploding. The idea behind these mechanics was that there could be several different kinds of anomalies - some that only exist for a short while but are very active and destructive, and some that are dormant for years in areas with low activity, such as deserts or mountains. So the lifetime can be anything from two seconds to 10 years.
3. I'm still not sure about the numbers, but the idea is there aren't that many obvious deaths by anomalies, and even if there is, it's one that is very active and will likely quickly trigger and disappear, making the death mysterious but not obviously paranormal. Triggering will usually just look like an explosion, so it can be covered up with an industrial accident or even terrorist activity. The ones created by 01 can also be located and safely triggered if needed by fast response teams. I don't think covering it up is that much harder than covering up some of the other stuff SCP foundation supposedly deals with.
4. I don't know, it's a weird super advanced physics plot device. I thought the possibility of an anomaly triggering was needed to make them disappear at some point, and make them more dangerous and unpredictable. For some reason that's just the way the anomalies work.
Hell, maybe I'm just thinking too much about this. Or maybe I should somehow add all this into the actual article somehow. But in any case if the consensus is that the article is a bad idea / too similar to 392, I won't post it.