Why would you be setting off a salute at ground level next to your control system or mounting improperly protected/shielded firing boards that close to your launching tube systems in the first place?
If thats going on you already have far bigger safety issues to deal with including the local ATF and sheriffs dept!
BTW my brothers system gets fully inspected every year by the ATF and his designs have been found to be more than adequate for overall system safety and redundancy in applied usage.
He wouldn't have a pyrotechnics license if it didn't pass every inspection by them.
You don't get to his level and safety record by building half assed junk.