Is there a section of code which addresses the use of a fire sprinkler piping system on an occasional basis as a utility water system?
in our facility, we have a number of fire headers located around the plant. Is there a code restriction against extending the piping to a valve station where water could be used for floor washing?
There are hose connection standards in Section 16.15 of the 2019 NFPA 13. For fire purposes only connected to wet systems.
I can not speculate what your local building regulations and codes are.