Index: Ringtoets/Piping/src/Ringtoets.Piping.IO/Exporters/PipingConfigurationWriter.cs
===================================================================
diff -u -r9b8d6b31f10635712e7e9c75574758fa7d7fe891 -raa30731a0eabb25918a308f15c7d3083e38b0bd8
--- Ringtoets/Piping/src/Ringtoets.Piping.IO/Exporters/PipingConfigurationWriter.cs	(.../PipingConfigurationWriter.cs)	(revision 9b8d6b31f10635712e7e9c75574758fa7d7fe891)
+++ Ringtoets/Piping/src/Ringtoets.Piping.IO/Exporters/PipingConfigurationWriter.cs	(.../PipingConfigurationWriter.cs)	(revision aa30731a0eabb25918a308f15c7d3083e38b0bd8)
@@ -20,9 +20,7 @@
 // All rights reserved.
 
 using System;
-using System.Globalization;
 using System.Xml;
-using Core.Common.Base.Data;
 using Core.Common.IO.Exceptions;
 using Ringtoets.Common.Data.Calculation;
 using Ringtoets.Common.Data.Probabilistics;
@@ -118,7 +116,7 @@
             if (calculationInputParameters.UseAssessmentLevelManualInput)
             {
                 writer.WriteElementString(PipingConfigurationSchemaIdentifiers.AssessmentLevelElement,
-                                          ToStringInvariantCulture(calculationInputParameters.AssessmentLevel));
+                                          XmlConvert.ToString(calculationInputParameters.AssessmentLevel));
             }
             else if (calculationInputParameters.HydraulicBoundaryLocation != null)
             {
@@ -131,9 +129,9 @@
                 writer.WriteElementString(PipingConfigurationSchemaIdentifiers.SurfaceLineElement,
                                           calculationInputParameters.SurfaceLine.Name);
                 writer.WriteElementString(PipingConfigurationSchemaIdentifiers.EntryPointLElement,
-                                          ToStringInvariantCulture(calculationInputParameters.EntryPointL));
+                                          XmlConvert.ToString(calculationInputParameters.EntryPointL));
                 writer.WriteElementString(PipingConfigurationSchemaIdentifiers.ExitPointLElement,
-                                          ToStringInvariantCulture(calculationInputParameters.ExitPointL));
+                                          XmlConvert.ToString(calculationInputParameters.ExitPointL));
             }
 
             if (calculationInputParameters.StochasticSoilModel != null)
@@ -171,16 +169,11 @@
             writer.WriteAttributeString(PipingConfigurationSchemaIdentifiers.NameAttribute, elementName);
 
             writer.WriteElementString(PipingConfigurationSchemaIdentifiers.MeanElement,
-                                      ToStringInvariantCulture(distribution.Mean));
+                                      XmlConvert.ToString(distribution.Mean));
             writer.WriteElementString(PipingConfigurationSchemaIdentifiers.StandardDeviationElement,
-                                      ToStringInvariantCulture(distribution.StandardDeviation));
+                                      XmlConvert.ToString(distribution.StandardDeviation));
 
             writer.WriteEndElement();
         }
-
-        private static string ToStringInvariantCulture(RoundedDouble roundedDouble)
-        {
-            return XmlConvert.ToString(roundedDouble);
-        }
     }
 }
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Exporters/PipingConfigurationWriterTest.cs
===================================================================
diff -u -r27a3de13b3b94459fc79664d521de3790dd6b0df -raa30731a0eabb25918a308f15c7d3083e38b0bd8
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Exporters/PipingConfigurationWriterTest.cs	(.../PipingConfigurationWriterTest.cs)	(revision 27a3de13b3b94459fc79664d521de3790dd6b0df)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/Exporters/PipingConfigurationWriterTest.cs	(.../PipingConfigurationWriterTest.cs)	(revision aa30731a0eabb25918a308f15c7d3083e38b0bd8)
@@ -46,26 +46,24 @@
                 yield return new TestCaseData("calculationWithoutHydraulicLocation",
                                               PipingTestDataGenerator.GetPipingCalculationWithoutHydraulicLocationAndAssessmentLevel())
                     .SetName("calculationWithoutHydraulicLocation");
-
                 yield return new TestCaseData("calculationWithAssessmentLevel",
                                               PipingTestDataGenerator.GetPipingCalculationWithAssessmentLevel())
                     .SetName("calculationWithAssessmentLevel");
-
                 yield return new TestCaseData("calculationWithoutSurfaceLine",
                                               PipingTestDataGenerator.GetPipingCalculationWithoutSurfaceLine())
                     .SetName("calculationWithoutSurfaceLine");
-
                 yield return new TestCaseData("calculationWithoutSoilModel",
                                               PipingTestDataGenerator.GetPipingCalculationWithoutSoilModel())
                     .SetName("calculationWithoutSoilModel");
-
                 yield return new TestCaseData("calculationWithoutSoilProfile",
                                               PipingTestDataGenerator.GetPipingCalculationWithoutSoilProfile())
                     .SetName("calculationWithoutSoilProfile");
-
                 yield return new TestCaseData("calculationWithNaNs",
                                               PipingTestDataGenerator.GetPipingCalculationWithNaNs())
                     .SetName("calculationWithNaNs");
+                yield return new TestCaseData("calculationWithInfinities",
+                                              PipingTestDataGenerator.GetPipingCalculationWithInfinities())
+                    .SetName("calculationWithInfinities");
             }
         }
 
Index: Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingConfigurationWriter/calculationWithInfinities.xml
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingConfigurationWriter/calculationWithInfinities.xml	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.IO.Test/test-data/PipingConfigurationWriter/calculationWithInfinities.xml	(revision aa30731a0eabb25918a308f15c7d3083e38b0bd8)
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuratie>
+  <berekening naam="PK001_0001 W1-6_0_1D1">
+    <toetspeil>-INF</toetspeil>
+    <profielschematisatie>PK001_0001</profielschematisatie>
+    <intredepunt>-INF</intredepunt>
+    <uittredepunt>INF</uittredepunt>
+    <ondergrondmodel>PK001_0001_Piping</ondergrondmodel>
+    <ondergrondschematisatie>W1-6_0_1D1</ondergrondschematisatie>
+    <stochasten>
+      <stochast naam="polderpeil">
+        <verwachtingswaarde>-INF</verwachtingswaarde>
+        <standaardafwijking>INF</standaardafwijking>
+      </stochast>
+      <stochast naam="dempingsfactor">
+        <verwachtingswaarde>INF</verwachtingswaarde>
+        <standaardafwijking>INF</standaardafwijking>
+      </stochast>
+    </stochasten>
+  </berekening>
+</configuratie>
\ No newline at end of file
Index: Ringtoets/Piping/test/Ringtoets.Piping.Integration.TestUtils.Test/PipingTestDataGeneratorTest.cs
===================================================================
diff -u -r6805397285fef921a9c5e239a564549e660a1c6b -raa30731a0eabb25918a308f15c7d3083e38b0bd8
--- Ringtoets/Piping/test/Ringtoets.Piping.Integration.TestUtils.Test/PipingTestDataGeneratorTest.cs	(.../PipingTestDataGeneratorTest.cs)	(revision 6805397285fef921a9c5e239a564549e660a1c6b)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Integration.TestUtils.Test/PipingTestDataGeneratorTest.cs	(.../PipingTestDataGeneratorTest.cs)	(revision aa30731a0eabb25918a308f15c7d3083e38b0bd8)
@@ -147,6 +147,26 @@
             Assert.AreEqual(double.NaN, calculation.InputParameters.DampingFactorExit.StandardDeviation.Value);
         }
 
+        [Test]
+        public void GetPipingCalculationWithInfinities_Always_ReturnCalculationWithInfinities()
+        {
+            // Call
+            PipingCalculation calculation = PipingTestDataGenerator.GetPipingCalculationWithInfinities();
+
+            // Assert
+            Assert.AreEqual("PK001_0001 W1-6_0_1D1", calculation.Name);
+            Assert.AreEqual(double.NegativeInfinity, calculation.InputParameters.AssessmentLevel.Value);
+            Assert.AreEqual("PK001_0001", calculation.InputParameters.SurfaceLine.Name);
+            Assert.AreEqual(double.NegativeInfinity, calculation.InputParameters.EntryPointL.Value);
+            Assert.AreEqual(double.PositiveInfinity, calculation.InputParameters.ExitPointL.Value);
+            Assert.AreEqual("PK001_0001_Piping", calculation.InputParameters.StochasticSoilModel.Name);
+            Assert.AreEqual("W1-6_0_1D1", calculation.InputParameters.StochasticSoilProfile.SoilProfile.Name);
+            Assert.AreEqual(double.NegativeInfinity, calculation.InputParameters.PhreaticLevelExit.Mean.Value);
+            Assert.AreEqual(double.PositiveInfinity, calculation.InputParameters.PhreaticLevelExit.StandardDeviation.Value);
+            Assert.AreEqual(double.PositiveInfinity, calculation.InputParameters.DampingFactorExit.Mean.Value);
+            Assert.AreEqual(double.PositiveInfinity, calculation.InputParameters.DampingFactorExit.StandardDeviation.Value);
+        }
+
         private static void AssertCalculation(PipingCalculation calculation,
                                               bool hasHydraulicLocation = true,
                                               bool hasAssessmentLevel = false,
Index: Ringtoets/Piping/test/Ringtoets.Piping.Integration.TestUtils/PipingTestDataGenerator.cs
===================================================================
diff -u -r81020313d965645986c0c89675374b16ae968f6b -raa30731a0eabb25918a308f15c7d3083e38b0bd8
--- Ringtoets/Piping/test/Ringtoets.Piping.Integration.TestUtils/PipingTestDataGenerator.cs	(.../PipingTestDataGenerator.cs)	(revision 81020313d965645986c0c89675374b16ae968f6b)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Integration.TestUtils/PipingTestDataGenerator.cs	(.../PipingTestDataGenerator.cs)	(revision aa30731a0eabb25918a308f15c7d3083e38b0bd8)
@@ -184,6 +184,37 @@
         }
 
         /// <summary>
+        /// Gets a <see cref="PipingCalculation"/> with <c>double.NegativeInfinity</c> and <c>double.PositiveInfinity</c> values set.
+        /// </summary>
+        /// <returns>A <see cref="PipingCalculation"/> with <c>double.NegativeInfinity</c> and <c>double.PositiveInfinity</c> values.</returns>
+        public static PipingCalculation GetPipingCalculationWithInfinities()
+        {
+            PipingCalculation calculation = GetPipingCalculationWithAssessmentLevel();
+
+            calculation.InputParameters.SurfaceLine.SetGeometry(new[]
+            {
+                new Point3D(0, double.NegativeInfinity, 0),
+                new Point3D(0, double.PositiveInfinity, 0)
+            });
+
+            calculation.InputParameters.AssessmentLevel = (RoundedDouble) double.NegativeInfinity;
+            calculation.InputParameters.EntryPointL = (RoundedDouble) double.NegativeInfinity;
+            calculation.InputParameters.ExitPointL = (RoundedDouble) double.PositiveInfinity;
+            calculation.InputParameters.PhreaticLevelExit = new NormalDistribution
+            {
+                Mean = (RoundedDouble) double.NegativeInfinity,
+                StandardDeviation = (RoundedDouble) double.PositiveInfinity
+            };
+            calculation.InputParameters.DampingFactorExit = new LogNormalDistribution
+            {
+                Mean = (RoundedDouble) double.PositiveInfinity,
+                StandardDeviation = (RoundedDouble) double.PositiveInfinity
+            };
+
+            return calculation;
+        }
+
+        /// <summary>
         /// Configures a <see cref="PipingFailureMechanism"/> to a fully configured failure
         /// mechanism with all possible parent and nested calculation configurations.
         /// </summary>