Index: Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Service/Ringtoets.WaveImpactAsphaltCover.Service.csproj
===================================================================
diff -u -r01c86929c554e5092193f6c7e0c673f58b5d2bbc -r5f55b35b1398af4604a31b78b7d4a144d209684f
--- Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Service/Ringtoets.WaveImpactAsphaltCover.Service.csproj	(.../Ringtoets.WaveImpactAsphaltCover.Service.csproj)	(revision 01c86929c554e5092193f6c7e0c673f58b5d2bbc)
+++ Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Service/Ringtoets.WaveImpactAsphaltCover.Service.csproj	(.../Ringtoets.WaveImpactAsphaltCover.Service.csproj)	(revision 5f55b35b1398af4604a31b78b7d4a144d209684f)
@@ -55,6 +55,11 @@
       <Name>Core.Common.Base</Name>
       <Private>False</Private>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\..\Core\Common\src\Core.Common.Utils\Core.Common.Utils.csproj">
+      <Project>{F49BD8B2-332A-4C91-A196-8CCE0A2C7D98}</Project>
+      <Name>Core.Common.Utils</Name>
+      <Private>False</Private>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\Common\src\Ringtoets.Common.Data\Ringtoets.Common.Data.csproj">
       <Project>{D4200F43-3F72-4F42-AF0A-8CED416A38EC}</Project>
       <Name>Ringtoets.Common.Data</Name>
Index: Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Service/WaveImpactAsphaltCoverDataSynchronizationService.cs
===================================================================
diff -u -rc96cfd7d2d167db3b0775f7d76f320c5e582ae27 -r5f55b35b1398af4604a31b78b7d4a144d209684f
--- Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Service/WaveImpactAsphaltCoverDataSynchronizationService.cs	(.../WaveImpactAsphaltCoverDataSynchronizationService.cs)	(revision c96cfd7d2d167db3b0775f7d76f320c5e582ae27)
+++ Ringtoets/WaveImpactAsphaltCover/src/Ringtoets.WaveImpactAsphaltCover.Service/WaveImpactAsphaltCoverDataSynchronizationService.cs	(.../WaveImpactAsphaltCoverDataSynchronizationService.cs)	(revision 5f55b35b1398af4604a31b78b7d4a144d209684f)
@@ -23,6 +23,7 @@
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
+using Core.Common.Utils.Extensions;
 using Ringtoets.HydraRing.Data;
 using Ringtoets.WaveImpactAsphaltCover.Data;
 
@@ -95,6 +96,32 @@
             return affectedItems;
         }
 
+        /// <summary>
+        /// Clears the output for all calculations in the <see cref="WaveImpactAsphaltCoverFailureMechanism"/>.
+        /// </summary>
+        /// <param name="failureMechanism">The <see cref="WaveImpactAsphaltCoverFailureMechanism"/>
+        /// which contains the calculations.</param>
+        /// <returns>An <see cref="IEnumerable{T}"/> of calculations which are affected by
+        /// clearing the output.</returns>
+        /// <exception cref="ArgumentNullException">Thrown when <paramref name="failureMechanism"/>
+        /// is <c>null</c>.</exception>
+        public static IEnumerable<WaveImpactAsphaltCoverWaveConditionsCalculation> ClearAllWaveConditionsCalculationOutput(WaveImpactAsphaltCoverFailureMechanism failureMechanism)
+        {
+            if (failureMechanism == null)
+            {
+                throw new ArgumentNullException("failureMechanism");
+            }
+
+            var affectedItems = failureMechanism.Calculations
+                                                .Cast<WaveImpactAsphaltCoverWaveConditionsCalculation>()
+                                                .Where(c => c.HasOutput)
+                                                .ToArray();
+
+            affectedItems.ForEachElementDo(ClearWaveConditionsCalculationOutput);
+
+            return affectedItems;
+        }
+
         private static void ClearHydraulicBoundaryLocation(WaveImpactAsphaltCoverWaveConditionsCalculation calculation)
         {
             calculation.InputParameters.HydraulicBoundaryLocation = null;
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Service.Test/WaveImpactAsphaltCoverDataSynchronizationServiceTest.cs
===================================================================
diff -u -r2973c5f790a5131e427bd5f73e2a620044199639 -r5f55b35b1398af4604a31b78b7d4a144d209684f
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Service.Test/WaveImpactAsphaltCoverDataSynchronizationServiceTest.cs	(.../WaveImpactAsphaltCoverDataSynchronizationServiceTest.cs)	(revision 2973c5f790a5131e427bd5f73e2a620044199639)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Service.Test/WaveImpactAsphaltCoverDataSynchronizationServiceTest.cs	(.../WaveImpactAsphaltCoverDataSynchronizationServiceTest.cs)	(revision 5f55b35b1398af4604a31b78b7d4a144d209684f)
@@ -229,5 +229,52 @@
             // Assert
             CollectionAssert.IsEmpty(affectedItems);
         }
+
+        [Test]
+        public void ClearAllWaveConditionsCalculationOutput_FailureMechanismNull_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate call = () => WaveImpactAsphaltCoverDataSynchronizationService.ClearAllWaveConditionsCalculationOutput(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(call);
+            Assert.AreEqual("failureMechanism", exception.ParamName);
+        }
+
+        [Test]
+        public void ClearAllWaveConditionsCalculationOutput_WithOutput_ClearsCalculationsOutputAndReturnsAffectedCalculations()
+        {
+            // Setup
+            WaveImpactAsphaltCoverFailureMechanism failureMechanism = new WaveImpactAsphaltCoverFailureMechanism();
+            WaveImpactAsphaltCoverWaveConditionsCalculation calculation1 = new WaveImpactAsphaltCoverWaveConditionsCalculation
+            {
+                Output = new WaveImpactAsphaltCoverWaveConditionsOutput(Enumerable.Empty<WaveConditionsOutput>())
+            };
+
+            WaveImpactAsphaltCoverWaveConditionsCalculation calculation2 = new WaveImpactAsphaltCoverWaveConditionsCalculation
+            {
+                Output = new WaveImpactAsphaltCoverWaveConditionsOutput(Enumerable.Empty<WaveConditionsOutput>())
+            };
+
+            WaveImpactAsphaltCoverWaveConditionsCalculation calculation3 = new WaveImpactAsphaltCoverWaveConditionsCalculation();
+
+            failureMechanism.WaveConditionsCalculationGroup.Children.Add(calculation1);
+            failureMechanism.WaveConditionsCalculationGroup.Children.Add(calculation2);
+            failureMechanism.WaveConditionsCalculationGroup.Children.Add(calculation3);
+
+            // Call
+            IEnumerable<WaveImpactAsphaltCoverWaveConditionsCalculation> affectedItems = WaveImpactAsphaltCoverDataSynchronizationService.ClearAllWaveConditionsCalculationOutput(failureMechanism);
+
+            // Assert
+            foreach (WaveImpactAsphaltCoverWaveConditionsCalculation calculation in failureMechanism.WaveConditionsCalculationGroup.Children.Cast<WaveImpactAsphaltCoverWaveConditionsCalculation>())
+            {
+                Assert.IsNull(calculation.Output);
+            }
+            CollectionAssert.AreEqual(new[]
+            {
+                calculation1,
+                calculation2
+            }, affectedItems);
+        }
     }
 }
\ No newline at end of file