Index: Riskeer/Piping/src/Riskeer.Piping.Data/IPipingFailureMechanismSectionResultCalculateProbabilityStrategy.cs
===================================================================
diff -u -r5539532ccfe26672db528c12a1d2c08cec166917 -r9f48e337ae658dab674177907decabf8d45fe784
--- Riskeer/Piping/src/Riskeer.Piping.Data/IPipingFailureMechanismSectionResultCalculateProbabilityStrategy.cs	(.../IPipingFailureMechanismSectionResultCalculateProbabilityStrategy.cs)	(revision 5539532ccfe26672db528c12a1d2c08cec166917)
+++ Riskeer/Piping/src/Riskeer.Piping.Data/IPipingFailureMechanismSectionResultCalculateProbabilityStrategy.cs	(.../IPipingFailureMechanismSectionResultCalculateProbabilityStrategy.cs)	(revision 9f48e337ae658dab674177907decabf8d45fe784)
@@ -27,19 +27,15 @@
     public interface IPipingFailureMechanismSectionResultCalculateProbabilityStrategy
     {
         /// <summary>
-        /// Calculates the probability per profile.
+        /// Calculates the initial failure mechanism result probability per profile.
         /// </summary>
-        /// <returns>The calculated initial failure mechanism result probability; or <see cref="double.NaN"/> when there
-        /// are no relevant calculations, when not all relevant calculations are performed or when the
-        /// contribution of the relevant calculations don't add up to 1.</returns>
+        /// <returns>The calculated initial failure mechanism result probability per profile.</returns>
         double CalculateProfileProbability();
 
         /// <summary>
-        /// Calculates the probability per section.
+        /// Calculates the initial failure mechanism result probability per section.
         /// </summary>
-        /// <returns>The calculated initial failure mechanism result probability; or <see cref="double.NaN"/> when there
-        /// are no relevant calculations, when not all relevant calculations are performed or when the
-        /// contribution of the relevant calculations don't add up to 1.</returns>
+        /// <returns>The calculated initial failure mechanism result probability per section.</returns>
         double CalculateSectionProbability();
     }
 }
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