Index: Riskeer/Piping/src/Riskeer.Piping.Data/Probabilistic/PartialProbabilisticPipingOutput.cs
===================================================================
diff -u -ra407dc36ea91b593a025fe550ce94531a332f32d -ra36569a4e6c4a7b2369e8322e6150067f9d64845
--- Riskeer/Piping/src/Riskeer.Piping.Data/Probabilistic/PartialProbabilisticPipingOutput.cs	(.../PartialProbabilisticPipingOutput.cs)	(revision a407dc36ea91b593a025fe550ce94531a332f32d)
+++ Riskeer/Piping/src/Riskeer.Piping.Data/Probabilistic/PartialProbabilisticPipingOutput.cs	(.../PartialProbabilisticPipingOutput.cs)	(revision a36569a4e6c4a7b2369e8322e6150067f9d64845)
@@ -35,7 +35,7 @@
         /// </summary>
         /// <param name="reliability">The reliability of the calculation.</param>
         /// <param name="generalResult">The general result of this output with the fault tree illustration points.</param>
-        protected PartialProbabilisticPipingOutput(
+        public PartialProbabilisticPipingOutput(
             double reliability, GeneralResult<T> generalResult)
         {
             Reliability = reliability;
Index: Riskeer/Piping/src/Riskeer.Piping.Service/Probabilistic/ProbabilisticPipingCalculationService.cs
===================================================================
diff -u -r2d896c48d4bb6a88b80b6bfb3146ee14737b2921 -ra36569a4e6c4a7b2369e8322e6150067f9d64845
--- Riskeer/Piping/src/Riskeer.Piping.Service/Probabilistic/ProbabilisticPipingCalculationService.cs	(.../ProbabilisticPipingCalculationService.cs)	(revision 2d896c48d4bb6a88b80b6bfb3146ee14737b2921)
+++ Riskeer/Piping/src/Riskeer.Piping.Service/Probabilistic/ProbabilisticPipingCalculationService.cs	(.../ProbabilisticPipingCalculationService.cs)	(revision a36569a4e6c4a7b2369e8322e6150067f9d64845)
@@ -167,15 +167,15 @@
 
             try
             {
-                PartialProbabilisticPipingOutput profileSpecificOutput = CalculateProfileSpecific(
+                IPartialProbabilisticPipingOutput profileSpecificOutput = CalculateProfileSpecific(
                     calculation, generalInput, hydraulicBoundaryDatabaseFilePath, usePreprocessor);
 
                 if (canceled)
                 {
                     return;
                 }
 
-                PartialProbabilisticPipingOutput sectionSpecificOutput = CalculateSectionSpecific(
+                IPartialProbabilisticPipingOutput sectionSpecificOutput = CalculateSectionSpecific(
                     calculation, generalInput, sectionLength, hydraulicBoundaryDatabaseFilePath, usePreprocessor);
 
                 if (canceled)
@@ -201,10 +201,10 @@
         /// <param name="generalInput">The general piping calculation input parameters.</param>
         /// <param name="hydraulicBoundaryDatabaseFilePath">The path which points to the hydraulic boundary database file.</param>
         /// <param name="usePreprocessor">Indicator whether to use the preprocessor in the calculation.</param>
-        /// <returns>A <see cref="PartialProbabilisticPipingOutput"/>.</returns>
+        /// <returns>A <see cref="PartialProbabilisticPipingOutput{T}"/>.</returns>
         /// <exception cref="HydraRingCalculationException">Thrown when an error occurs while performing the calculation.</exception>
-        private PartialProbabilisticPipingOutput CalculateProfileSpecific(ProbabilisticPipingCalculation calculation, GeneralPipingInput generalInput,
-                                                                          string hydraulicBoundaryDatabaseFilePath, bool usePreprocessor)
+        private IPartialProbabilisticPipingOutput CalculateProfileSpecific(ProbabilisticPipingCalculation calculation, GeneralPipingInput generalInput,
+                                                                           string hydraulicBoundaryDatabaseFilePath, bool usePreprocessor)
         {
             NotifyProgress(string.Format(Resources.ProbabilisticPipingCalculationService_Calculate_Executing_calculation_of_type_0,
                                          Resources.ProbabilisticPipingCalculationService_ProfileSpecific),
@@ -233,8 +233,8 @@
                                calculation.Name, Resources.ProbabilisticPipingCalculationService_ProfileSpecific, e.Message);
             }
 
-            return new PartialProbabilisticPipingOutput(profileSpecificCalculator.ExceedanceProbabilityBeta,
-                                                        generalResult);
+            return new PartialProbabilisticPipingOutput<TopLevelFaultTreeIllustrationPoint>(profileSpecificCalculator.ExceedanceProbabilityBeta,
+                                                                                            generalResult);
         }
 
         /// <summary>
@@ -245,10 +245,10 @@
         /// <param name="sectionLength">The length of the section.</param>
         /// <param name="hydraulicBoundaryDatabaseFilePath">The path which points to the hydraulic boundary database file.</param>
         /// <param name="usePreprocessor">Indicator whether to use the preprocessor in the calculation.</param>
-        /// <returns>A <see cref="PartialProbabilisticPipingOutput"/>.</returns>
+        /// <returns>A <see cref="PartialProbabilisticPipingOutput{T}"/>.</returns>
         /// <exception cref="HydraRingCalculationException">Thrown when an error occurs while performing the calculation.</exception>
-        private PartialProbabilisticPipingOutput CalculateSectionSpecific(ProbabilisticPipingCalculation calculation, GeneralPipingInput generalInput,
-                                                                          double sectionLength, string hydraulicBoundaryDatabaseFilePath, bool usePreprocessor)
+        private IPartialProbabilisticPipingOutput CalculateSectionSpecific(ProbabilisticPipingCalculation calculation, GeneralPipingInput generalInput,
+                                                                           double sectionLength, string hydraulicBoundaryDatabaseFilePath, bool usePreprocessor)
         {
             NotifyProgress(string.Format(Resources.ProbabilisticPipingCalculationService_Calculate_Executing_calculation_of_type_0,
                                          Resources.ProbabilisticPipingCalculationService_SectionSpecific),
@@ -278,8 +278,8 @@
                                calculation.Name, Resources.ProbabilisticPipingCalculationService_SectionSpecific, e.Message);
             }
 
-            return new PartialProbabilisticPipingOutput(sectionSpecificCalculator.ExceedanceProbabilityBeta,
-                                                        generalResult);
+            return new PartialProbabilisticPipingOutput<TopLevelFaultTreeIllustrationPoint>(sectionSpecificCalculator.ExceedanceProbabilityBeta,
+                                                                                            generalResult);
         }
 
         /// <summary>