Index: Riskeer/Piping/src/Riskeer.Piping.Service/PipingCalculationActivity.cs
===================================================================
diff -u -rf990699959bb0d146317eba670f7855746e7be72 -r8ffac63fbc60d06e92afcbef2b5bdff5efcc58a7
--- Riskeer/Piping/src/Riskeer.Piping.Service/PipingCalculationActivity.cs	(.../PipingCalculationActivity.cs)	(revision f990699959bb0d146317eba670f7855746e7be72)
+++ Riskeer/Piping/src/Riskeer.Piping.Service/PipingCalculationActivity.cs	(.../PipingCalculationActivity.cs)	(revision 8ffac63fbc60d06e92afcbef2b5bdff5efcc58a7)
@@ -28,11 +28,11 @@
 namespace Riskeer.Piping.Service
 {
     /// <summary>
-    /// <see cref="CalculatableActivity"/> for running a piping calculation.
+    /// <see cref="CalculatableActivity"/> for running a semi-probabilistic piping calculation.
     /// </summary>
     internal class PipingCalculationActivity : CalculatableActivity
     {
-        private readonly PipingCalculation<PipingInput, PipingOutput> calculation;
+        private readonly SemiProbabilisticPipingCalculation calculation;
         private readonly RoundedDouble normativeAssessmentLevel;
 
         /// <summary>
@@ -41,7 +41,7 @@
         /// <param name="calculation">The piping calculation to perform.</param>
         /// <param name="normativeAssessmentLevel">The normative assessment level to use in case the manual assessment level is not applicable.</param>
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="calculation"/> is <c>null</c>.</exception>
-        public PipingCalculationActivity(PipingCalculation<PipingInput, PipingOutput> calculation,
+        public PipingCalculationActivity(SemiProbabilisticPipingCalculation calculation,
                                          RoundedDouble normativeAssessmentLevel)
             : base(calculation)
         {
Index: Riskeer/Piping/src/Riskeer.Piping.Service/PipingCalculationActivityFactory.cs
===================================================================
diff -u -rf990699959bb0d146317eba670f7855746e7be72 -r8ffac63fbc60d06e92afcbef2b5bdff5efcc58a7
--- Riskeer/Piping/src/Riskeer.Piping.Service/PipingCalculationActivityFactory.cs	(.../PipingCalculationActivityFactory.cs)	(revision f990699959bb0d146317eba670f7855746e7be72)
+++ Riskeer/Piping/src/Riskeer.Piping.Service/PipingCalculationActivityFactory.cs	(.../PipingCalculationActivityFactory.cs)	(revision 8ffac63fbc60d06e92afcbef2b5bdff5efcc58a7)
@@ -83,7 +83,7 @@
             }
 
             return calculationGroup.GetCalculations()
-                                   .Cast<PipingCalculation<PipingInput, PipingOutput>>()
+                                   .Cast<SemiProbabilisticPipingCalculation>()
                                    .Select(calc => CreateCalculationActivity(calc, assessmentSection))
                                    .ToArray();
         }
@@ -96,7 +96,7 @@
         /// belongs to.</param>
         /// <returns>A <see cref="CalculatableActivity"/>.</returns>
         /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
-        public static CalculatableActivity CreateCalculationActivity(PipingCalculation<PipingInput, PipingOutput> calculation,
+        public static CalculatableActivity CreateCalculationActivity(SemiProbabilisticPipingCalculation calculation,
                                                                      IAssessmentSection assessmentSection)
         {
             if (calculation == null)