diff --git a/TBF/Rig/ControlBoard/Uni/StandingStartStopTestOp.cs b/TBF/Rig/ControlBoard/Uni/StandingStartStopTestOp.cs
index f2732345c..edfa9c3b7 100644
--- a/TBF/Rig/ControlBoard/Uni/StandingStartStopTestOp.cs
+++ b/TBF/Rig/ControlBoard/Uni/StandingStartStopTestOp.cs
@@ -5,6 +5,7 @@ using System;
 using System.Reflection;
 using System.Text;
 using System.Windows.Forms;
+using Common;
 using log4net;
 using TBF.Rig.GenericDevices;
 
@@ -24,6 +25,9 @@ namespace TBF.Rig.ControlBoard.Uni
         readonly TBF.Rig.Uni.Diverter.Diverter diverter;
 		readonly int pulsesCount;               /// Number of reference pulses for a complete test
         readonly bool withDiverter;             /// Test with diverter (and scale)
+                                                
+        private DateTime startTimeForSimulation;
+        private bool simulationTimerStarted = false;
 
         ///
         ///  Internal state of this operation
@@ -183,6 +187,28 @@ namespace TBF.Rig.ControlBoard.Uni
 		{
             log.DebugFormat("Run() opState={0}", opState);
 
+            //Simulation of processing time 25 seconds
+            if (uniCB.DebugLevel == DebugMode.Simulate)
+            {
+                if (opState == OpState.StartingTest)
+                {
+                    startTimeForSimulation = DateTime.Now;
+                    simulationTimerStarted = false;
+                }
+                if (opState == OpState.TestInProgress)
+                {
+                    if (!simulationTimerStarted)
+                    {
+                        startTimeForSimulation = DateTime.Now;
+                        simulationTimerStarted = true;
+                    }
+                    else if (DateTime.Now - startTimeForSimulation > TimeSpan.FromSeconds(25))
+                    {
+                        return Event.TestCompleted;
+                    }
+                }
+            }
+            
             switch (opState)
             {
                 case OpState.StartingTest:
diff --git a/TBF/Rig/TestMethods/FlyingStartMassCollection/FlyingStartMassCollectionSeq.cs b/TBF/Rig/TestMethods/FlyingStartMassCollection/FlyingStartMassCollectionSeq.cs
index 5f0264456..35cf0a3ba 100644
--- a/TBF/Rig/TestMethods/FlyingStartMassCollection/FlyingStartMassCollectionSeq.cs
+++ b/TBF/Rig/TestMethods/FlyingStartMassCollection/FlyingStartMassCollectionSeq.cs
@@ -691,7 +691,7 @@ namespace TBF.Rig.TestMethods.FlyingStartMassCollection
                 tstRslt.TimeBtwnMassMsrmnts = tMass2 - tMass1;
                 tstRslt.ConstMasterRaw = outPath.FlowMeter.LtrPerPulse;
                 tstRslt.VolumeMaster   = tstRslt.ConstMasterRaw * tstRslt.PulsesMaster; /// [l] volume from the master flow meter
-                double flowMID         = 3.6 * tstRslt.VolumeMaster / tstRslt.TestTime; /// [m3/h] flow before correction from the master flow meter
+                double flowMID         = tstRslt.TestTime == 0 ? 0 : 3.6 * tstRslt.VolumeMaster / tstRslt.TestTime; /// [m3/h] flow before correction from the master flow meter
 
                 /// Corrected data
                 tstRslt.MassStart = MeasurementCorrection.CorrectedValue(tstRslt.MassStartRaw, scale.Corrections);
@@ -708,7 +708,7 @@ namespace TBF.Rig.TestMethods.FlyingStartMassCollection
                     tstRslt.VolumeCTV *= tstRslt.TestTime + tstRslt.TestTimeCorrection;
                     tstRslt.VolumeCTV /= tstRslt.TestTime;
                 }
-                tstRslt.Flow        = 3.6 * tstRslt.VolumeCTV / tstRslt.TestTime;       /// Flow from VolumeCTV and time
+                tstRslt.Flow        = tstRslt.TestTime==0 ? 0 : 3.6 * tstRslt.VolumeCTV / tstRslt.TestTime;       /// Flow from VolumeCTV and time
                 tstRslt.ErrorMaster = Formulas.ErrorFromVolumes(tstRslt.VolumeMaster, tstRslt.VolumeCTV);
                 tstRslt.ConstMaster = (tstRslt.PulsesMaster != 0) ? (tstRslt.VolumeCTV / tstRslt.PulsesMaster) : tstRslt.ConstMasterCorr;
                                                                                          /// Master pulses per liter from the measured mass
@@ -719,9 +719,14 @@ namespace TBF.Rig.TestMethods.FlyingStartMassCollection
                 {
                     tstRslt.TestTimeCorrection = outPath.Diverter.TestTimeCorrection(flowMID);
                     tstRslt.MassCTV *= tstRslt.TestTime + tstRslt.TestTimeCorrection;
-                    tstRslt.MassCTV /= tstRslt.TestTime;
+                    if (tstRslt.TestTime!= 0)
+						tstRslt.MassCTV /= tstRslt.TestTime;
+                    else
+                    {
+	                    tstRslt.MassCTV = 0;
+                    }
                 }
-                tstRslt.MassFlow = 3.6 * tstRslt.MassCTV / tstRslt.TestTime;       /// Flow from MassCTV and time
+                tstRslt.MassFlow = tstRslt.TestTime == 0 ? 0 : 3.6 * tstRslt.MassCTV / tstRslt.TestTime;       /// Flow from MassCTV and time
                 tstRslt.MassErrorMaster = Formulas.ErrorFromVolumes(tstRslt.VolumeMaster, tstRslt.MassCTV);
                 tstRslt.MassConstMaster = (tstRslt.PulsesMaster != 0) ? (tstRslt.MassCTV / tstRslt.PulsesMaster) : tstRslt.ConstMasterCorr;
 
@@ -1016,8 +1021,8 @@ namespace TBF.Rig.TestMethods.FlyingStartMassCollection
 									meterRslt.VolumeEnd = dstrReader.VolumeLtrEnd; /// liter
 									meterRslt.VolumeMeter =
 										Math.Abs(dstrReader.VolumeLtrEnd - dstrReader.VolumeLtrStart);
-									meterRslt.VolumeRef = tstRslt.VolumeCTV * meterRslt.TestTime / tstRslt.TestTime;
-									meterRslt.PulsesMaster =
+									meterRslt.VolumeRef = tstRslt.TestTime==0? tstRslt.VolumeCTV : tstRslt.VolumeCTV * meterRslt.TestTime / tstRslt.TestTime;
+									meterRslt.PulsesMaster = tstRslt.TestTime == 0? tstRslt.PulsesMaster : 
 										tstRslt.PulsesMaster * meterRslt.TestTime / tstRslt.TestTime;
 								}