Index: Riskeer/Piping/src/Riskeer.Piping.Data/PipingFailureMechanismAssemblyFactory.cs
===================================================================
diff -u -rc37eebd9171a53987f5929013edbe3d82e618ed0 -rf80ca3783019e37f45fcf94b634365131da02e41
--- Riskeer/Piping/src/Riskeer.Piping.Data/PipingFailureMechanismAssemblyFactory.cs	(.../PipingFailureMechanismAssemblyFactory.cs)	(revision c37eebd9171a53987f5929013edbe3d82e618ed0)
+++ Riskeer/Piping/src/Riskeer.Piping.Data/PipingFailureMechanismAssemblyFactory.cs	(.../PipingFailureMechanismAssemblyFactory.cs)	(revision f80ca3783019e37f45fcf94b634365131da02e41)
@@ -119,7 +119,7 @@
             {
                 return calculator.AssembleDetailedAssessment(
                     failureMechanismSectionResult.DetailedAssessmentResult,
-                    failureMechanismSectionResult.GetDetailedAssessmentProbability(calculationScenarios, failureMechanism, assessmentSection),
+                    failureMechanismSectionResult.GetDetailedAssessmentProbability(calculationScenarios, assessmentSection.FailureMechanismContribution.Norm),
                     failureMechanism.PipingProbabilityAssessmentInput.GetN(failureMechanismSectionResult.Section.Length),
                     CreateAssemblyCategoriesInput(failureMechanism, assessmentSection));
             }
Index: Riskeer/Piping/test/Riskeer.Piping.Forms.Test/Views/PipingFailureMechanismSectionResultRowTest.cs
===================================================================
diff -u -rc37eebd9171a53987f5929013edbe3d82e618ed0 -rf80ca3783019e37f45fcf94b634365131da02e41
--- Riskeer/Piping/test/Riskeer.Piping.Forms.Test/Views/PipingFailureMechanismSectionResultRowTest.cs	(.../PipingFailureMechanismSectionResultRowTest.cs)	(revision c37eebd9171a53987f5929013edbe3d82e618ed0)
+++ Riskeer/Piping/test/Riskeer.Piping.Forms.Test/Views/PipingFailureMechanismSectionResultRowTest.cs	(.../PipingFailureMechanismSectionResultRowTest.cs)	(revision f80ca3783019e37f45fcf94b634365131da02e41)
@@ -177,7 +177,7 @@
                 Assert.IsInstanceOf<FailureMechanismSectionResultRow<PipingFailureMechanismSectionResult>>(row);
                 Assert.AreEqual(result.SimpleAssessmentResult, row.SimpleAssessmentResult);
                 Assert.AreEqual(result.DetailedAssessmentResult, row.DetailedAssessmentResult);
-                Assert.AreEqual(result.GetDetailedAssessmentProbability(calculationScenarios, failureMechanism, assessmentSection),
+                Assert.AreEqual(result.GetDetailedAssessmentProbability(calculationScenarios, assessmentSection.FailureMechanismContribution.Norm),
                                 row.DetailedAssessmentProbability);
                 Assert.AreEqual(result.TailorMadeAssessmentResult, row.TailorMadeAssessmentResult);
                 Assert.AreEqual(result.TailorMadeAssessmentProbability, row.TailorMadeAssessmentProbability);
@@ -1132,9 +1132,7 @@
                 double detailedAssessmentProbability = resultRow.DetailedAssessmentProbability;
 
                 // Assert
-                Assert.AreEqual(sectionResult.GetDetailedAssessmentProbability(calculationScenarios,
-                                                                               failureMechanism,
-                                                                               assessmentSection),
+                Assert.AreEqual(sectionResult.GetDetailedAssessmentProbability(calculationScenarios, assessmentSection.FailureMechanismContribution.Norm),
                                 detailedAssessmentProbability);
                 mocks.VerifyAll();
             }