Index: Riskeer/Piping/src/Riskeer.Piping.Service/Probabilistic/ProbabilisticPipingCalculationActivity.cs
===================================================================
diff -u -r1c1dd58bca9545c97beced2e7858d9948767b855 -r562ea189a7a60203f661b2178979a15d018bdf01
--- Riskeer/Piping/src/Riskeer.Piping.Service/Probabilistic/ProbabilisticPipingCalculationActivity.cs	(.../ProbabilisticPipingCalculationActivity.cs)	(revision 1c1dd58bca9545c97beced2e7858d9948767b855)
+++ Riskeer/Piping/src/Riskeer.Piping.Service/Probabilistic/ProbabilisticPipingCalculationActivity.cs	(.../ProbabilisticPipingCalculationActivity.cs)	(revision 562ea189a7a60203f661b2178979a15d018bdf01)
@@ -33,6 +33,7 @@
     /// </summary>
     public class ProbabilisticPipingCalculationActivity : CalculatableActivity
     {
+        private readonly ProbabilisticPipingCalculation calculation;
         private readonly PipingFailureMechanism failureMechanism;
         private readonly IAssessmentSection assessmentSection;
         private readonly ProbabilisticPipingCalculationService service;
@@ -59,6 +60,7 @@
                 throw new ArgumentNullException(nameof(assessmentSection));
             }
 
+            this.calculation = calculation;
             this.failureMechanism = failureMechanism;
             this.assessmentSection = assessmentSection;
 
@@ -74,7 +76,7 @@
 
         protected override void OnFinish()
         {
-            throw new System.NotImplementedException();
+            calculation.NotifyObservers();
         }
 
         protected override void PerformCalculation()