NFPA 13R underground pressure testing

[mstrfenix]

I know that for a 13R sprinkler system the underground supply has to be pressure tested for 2 hours, however in the 2007 edition of NFPA 13R I can't find where it states that. In section 6.4.2 it talks about testing the aboveground piping, but omits the underground supply and I can't find it any place else in the standard. It might be in the IFC, but I can't find it.
I thought there used to be a catch-all that stated that if it wasn't addessed in 13R you reverted to 13, but alas I can't find that either, figures huh?
I'm sure its right in front of me. Any ideas?

thanks

 

[Arsnman4]

BTW - "suppression professionals" as used above refers to fire service suppression personnel not fire protection firm professionals, just in case!

"Fire suppression is a failure in prevention"

 

[786392]

OK!

Best Regards
Qalander(Chem)