cleanup and fixes

supervisor/facility.lua

@@ -638,7 +638,7 @@ function facility.new(num_reactors, cooling_conf)
                     if e_db.radiation_raw > max_rad then max_rad = e_db.radiation_raw end
                 end
 
-                astatus.radiation = max_rad > ALARM_LIMS.FAC_HIGH_RAD
+                astatus.radiation = max_rad >= ALARM_LIMS.FAC_HIGH_RAD
             else
                 -- don't clear, if it is true then we lost it with high radiation, so just keep alarming
                 -- operator can restart the system or hit the stop/reset button

supervisor/session/rtu/imatrix.lua

@@ -41,9 +41,6 @@ function imatrix.new(session_id, unit_id, advert, out_queue)
     if advert.type ~= RTU_UNIT_TYPE.IMATRIX then
         log.error("attempt to instantiate imatrix RTU for type " .. types.rtu_type_to_string(advert.type))
         return nil
-    elseif not util.is_int(advert.index) then
-        log.error("attempt to instantiate dynamicv RTU without index")
-        return nil
     end
 
     local log_tag = util.c("session.rtu(", session_id, ").imatrix[@", unit_id, "]: ")