Jim Barnes asked for N-16 equilibrium in coolant. From our Final Safety Analysis Report (FSAR) for a large (1100 MWe) Pressurized Water Reactor, the following table for N-16 activity: LOCATION ACTIVITY (dps per cm3) Outlet nozzle 4.84E6 Outlet line 4.73E6 Steam generator 3.80E6 Pump 2.88E6 Inlet line 2.76E6 All calculated rather than measured of course. Eric Goldin <goldinem@songs.sce.com>