2) How will the sprinkler control valve(s) on the backflow be supervised? 13d:7.1.2
NOTE: This is a 13d system therefore nfpa 24 does not apply. Therefore an underground permit does not get pulled as the underground piping only needs to follow standard utility requirements. The sprinkler review is the only way we can capture requirements from nfpa 13d. It is your job to ensure 13d is met for sprinkler review and the sprinkler final. I don't care who does this work but it needs to be called out on your plans and carried out prior to the final (just like your noted attic insulation by others and riser freeze protection by others).
Wednesday, April 24, 2024 Response to comment indicates "No control valve supervision is required per NFPA 13D."
13d:7.1.2 does require supervision by 1 of 3 methods unless the fire valve is shared with the domestic shut off.