Index: Ringtoets/Common/src/Ringtoets.Common.Forms/Views/FailureMechanismResultView.cs
===================================================================
diff -u -rc02a37ac174a9c5a023b743d506969b8d593f0c7 -r2d36ffab7227ac916cbf278644023a95fa21d1e7
--- Ringtoets/Common/src/Ringtoets.Common.Forms/Views/FailureMechanismResultView.cs	(.../FailureMechanismResultView.cs)	(revision c02a37ac174a9c5a023b743d506969b8d593f0c7)
+++ Ringtoets/Common/src/Ringtoets.Common.Forms/Views/FailureMechanismResultView.cs	(.../FailureMechanismResultView.cs)	(revision 2d36ffab7227ac916cbf278644023a95fa21d1e7)
@@ -41,6 +41,7 @@
     {
         private readonly Observer failureMechanismObserver;
         private readonly RecursiveObserver<IFailureMechanism, FailureMechanismSectionResult> failureMechanismSectionResultObserver;
+        private readonly RecursiveObserver<IFailureMechanism, ICalculationScenario> calculationScenarioObserver; 
 
         private IEnumerable<FailureMechanismSectionResult> failureMechanismSectionResult;
         private IFailureMechanism failureMechanism;
@@ -59,6 +60,7 @@
 
             failureMechanismObserver = new Observer(UpdataDataGridViewDataSource);
             failureMechanismSectionResultObserver = new RecursiveObserver<IFailureMechanism, FailureMechanismSectionResult>(RefreshDataGridView, mechanism => mechanism.SectionResults);
+            calculationScenarioObserver = new RecursiveObserver<IFailureMechanism, ICalculationScenario>(RefreshDataGridView, mechanism => mechanism.SectionResults.Select(sr => sr.CalculationScenarios));
 
             Load += OnLoad;
         }
@@ -94,10 +96,12 @@
                 if (failureMechanismSectionResult != null)
                 {
                     UpdataDataGridViewDataSource();
+                    calculationScenarioObserver.Observable = failureMechanism;
                 }
                 else
                 {
                     dataGridView.DataSource = null;
+                    calculationScenarioObserver.Observable = null;
                 }
             }
         }
Index: Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingCalculationGroupExtensions.cs
===================================================================
diff -u -rc02a37ac174a9c5a023b743d506969b8d593f0c7 -r2d36ffab7227ac916cbf278644023a95fa21d1e7
--- Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingCalculationGroupExtensions.cs	(.../PipingCalculationGroupExtensions.cs)	(revision c02a37ac174a9c5a023b743d506969b8d593f0c7)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Data/PipingCalculationGroupExtensions.cs	(.../PipingCalculationGroupExtensions.cs)	(revision 2d36ffab7227ac916cbf278644023a95fa21d1e7)
@@ -50,6 +50,8 @@
                     failureMechanismSectionResult.CalculationScenarios.AddRange(calculationScenarios);
                 }
             }
+
+            pipingFailureMechanism.NotifyObservers();
         }
     }
 }
\ No newline at end of file
Index: Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingCalculationsView.cs
===================================================================
diff -u -r0b081b2391e73b7e3ff04ef31fafd2df1b1571e3 -r2d36ffab7227ac916cbf278644023a95fa21d1e7
--- Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingCalculationsView.cs	(.../PipingCalculationsView.cs)	(revision 0b081b2391e73b7e3ff04ef31fafd2df1b1571e3)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingCalculationsView.cs	(.../PipingCalculationsView.cs)	(revision 2d36ffab7227ac916cbf278644023a95fa21d1e7)
@@ -49,7 +49,7 @@
     {
         private readonly Observer assessmentSectionObserver;
         private readonly RecursiveObserver<PipingCalculationGroup, PipingCalculationGroup> pipingCalculationGroupObserver;
-        private readonly RecursiveObserver<PipingCalculationGroup, PipingCalculation> pipingCalculationObserver;
+        private readonly RecursiveObserver<PipingCalculationGroup, PipingCalculationScenario> pipingCalculationObserver;
         private readonly Observer pipingFailureMechanismObserver;
         private readonly RecursiveObserver<PipingCalculationGroup, PipingInput> pipingInputObserver;
         private readonly Observer pipingStochasticSoilModelsObserver;
@@ -73,8 +73,8 @@
             pipingStochasticSoilModelsObserver = new Observer(OnStochasticSoilModelsUpdate);
             pipingFailureMechanismObserver = new Observer(OnPipingFailureMechanismUpdate);
             assessmentSectionObserver = new Observer(UpdateHydraulicBoundaryLocationsColumn);
-            pipingInputObserver = new RecursiveObserver<PipingCalculationGroup, PipingInput>(UpdateDataGridViewDataSource, pcg => pcg.Children.Concat<object>(pcg.Children.OfType<PipingCalculation>().Select(pc => pc.InputParameters)));
-            pipingCalculationObserver = new RecursiveObserver<PipingCalculationGroup, PipingCalculation>(RefreshDataGridView, pcg => pcg.Children);
+            pipingInputObserver = new RecursiveObserver<PipingCalculationGroup, PipingInput>(UpdateDataGridViewDataSource, pcg => pcg.Children.Concat<object>(pcg.Children.OfType<PipingCalculationScenario>().Select(pc => pc.InputParameters)));
+            pipingCalculationObserver = new RecursiveObserver<PipingCalculationGroup, PipingCalculationScenario>(RefreshDataGridView, pcg => pcg.Children);
             pipingCalculationGroupObserver = new RecursiveObserver<PipingCalculationGroup, PipingCalculationGroup>(UpdateDataGridViewDataSource, pcg => pcg.Children);
         }
 
Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingCalculationGroupExtensionsTest.cs
===================================================================
diff -u -rc02a37ac174a9c5a023b743d506969b8d593f0c7 -r2d36ffab7227ac916cbf278644023a95fa21d1e7
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingCalculationGroupExtensionsTest.cs	(.../PipingCalculationGroupExtensionsTest.cs)	(revision c02a37ac174a9c5a023b743d506969b8d593f0c7)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingCalculationGroupExtensionsTest.cs	(.../PipingCalculationGroupExtensionsTest.cs)	(revision 2d36ffab7227ac916cbf278644023a95fa21d1e7)
@@ -21,8 +21,10 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using Core.Common.Base;
 using Core.Common.Base.Geometry;
 using NUnit.Framework;
+using Rhino.Mocks;
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Piping.Data.TestUtil;
 using Ringtoets.Piping.Forms;
@@ -152,7 +154,7 @@
         }
 
         [Test]
-        public void AddCalculationScenariosToFailureMechanismSectionResult_CalculationAlreadyInFailureMechanismSectionResul_ScenarioNotAddedToFailureMechanismSectionResult()
+        public void AddCalculationScenariosToFailureMechanismSectionResult_CalculationAlreadyInFailureMechanismSectionResult_ScenarioNotAddedToFailureMechanismSectionResult()
         {
             // Setup
             var failureMechanism = GetFailureMechanismWithSections();
@@ -188,6 +190,42 @@
             Assert.AreEqual(2, failureMechanismSectionResult4.CalculationScenarios.Count);
         }
 
+        [Test]
+        public void AddCalculationScenariosToFailureMechanismSectionResult_ScenariosAdded_NotifiesObserver()
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var observer = mocks.StrictMock<IObserver>();
+            observer.Expect(o => o.UpdateObserver());
+            mocks.ReplayAll();
+
+            var failureMechanism = GetFailureMechanismWithSections();
+
+            var calculationsStructure = PipingCalculationConfigurationHelper.GenerateCalculationsStructure(
+                failureMechanism.SurfaceLines,
+                failureMechanism.StochasticSoilModels,
+                failureMechanism.GeneralInput,
+                failureMechanism.SemiProbabilisticInput);
+
+            foreach (var item in calculationsStructure)
+            {
+                failureMechanism.CalculationsGroup.Children.Add(item);
+            }
+
+            failureMechanism.Attach(observer);
+
+            // Call
+            failureMechanism.CalculationsGroup.AddCalculationScenariosToFailureMechanismSectionResult(failureMechanism);
+
+            // Assert
+            var failureMechanismSectionResult1 = failureMechanism.SectionResults.First();
+            var failureMechanismSectionResult2 = failureMechanism.SectionResults.ElementAt(1);
+
+            Assert.AreEqual(4, failureMechanismSectionResult1.CalculationScenarios.Count);
+            Assert.AreEqual(2, failureMechanismSectionResult2.CalculationScenarios.Count);
+            mocks.VerifyAll();
+        }
+
         private static PipingFailureMechanism GetFailureMechanismWithoutSections()
         {
             return GetFailureMechanism();