diff --git a/src/thermophysicalModels/radiation/derivedFvPatchFields/MarshakRadiation/MarshakRadiationMixedFvPatchScalarField.C b/src/thermophysicalModels/radiation/derivedFvPatchFields/MarshakRadiation/MarshakRadiationMixedFvPatchScalarField.C
index e16b58f45..9a11b0c16 100644
--- a/src/thermophysicalModels/radiation/derivedFvPatchFields/MarshakRadiation/MarshakRadiationMixedFvPatchScalarField.C
+++ b/src/thermophysicalModels/radiation/derivedFvPatchFields/MarshakRadiation/MarshakRadiationMixedFvPatchScalarField.C
@@ -75,21 +75,30 @@ Foam::MarshakRadiationFvPatchScalarField::MarshakRadiationFvPatchScalarField
     TName_(dict.lookup("T")),
     emissivity_(readScalar(dict.lookup("emissivity")))
 {
-    const scalarField& Tp =
-        lookupPatchField<volScalarField, scalar>(TName_);
-
-    refValue() = 4.0*radiation::sigmaSB.value()*pow4(Tp);
-    refGrad() = 0.0;
-
     if (dict.found("value"))
     {
         fvPatchScalarField::operator=
         (
             scalarField("value", dict, p.size())
         );
+        refValue() = scalarField("value", dict, p.size());
+
+        refGrad() = 0;
+        valueFraction() = 1;
     }
     else
     {
+        // No value given. Restart as fixedValue b.c.
+
+        // Bugfix: Do not initialize from temperautre because it is unavailable
+        // when running, e.g. decomposePar and loading radiation as
+        // shared library. Initialize to zero instead.
+        // 26 Mar 2014 - DC
+        refValue() = 0;
+
+        refGrad() = 0;
+        valueFraction() = 0;
+
         fvPatchScalarField::operator=(refValue());
     }
 }
diff --git a/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C b/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C
index c990b30e9..181a66edc 100644
--- a/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C
+++ b/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C
@@ -93,15 +93,15 @@ greyDiffusiveRadiationMixedFvPatchScalarField
     {
         // No value given. Restart as fixedValue b.c.
 
-        const scalarField& Tp =
-            lookupPatchField<volScalarField, scalar>(TName_);
+        // Bugfix: Do not initialize from temperautre because it is unavailable
+        // when running, e.g. decomposePar and loading radiation as
+        // shared library. Initialize to zero instead.
+        // 26 Mar 2014 - DC
 
-        refValue() =
-            emissivity_*4.0*radiation::sigmaSB.value()*pow4(Tp)
-           /Foam::mathematicalConstant::pi;
+        refValue() = 0;
 
-        refGrad() = 0.0;
-        valueFraction() = 1.0;
+        refGrad() = 0;
+        valueFraction() = 1;
 
         fvPatchScalarField::operator=(refValue());
     }
diff --git a/src/thermophysicalModels/radiation/derivedFvPatchFields/wideBandDiffusiveRadiation/wideBandDiffusiveRadiationMixedFvPatchScalarField.C b/src/thermophysicalModels/radiation/derivedFvPatchFields/wideBandDiffusiveRadiation/wideBandDiffusiveRadiationMixedFvPatchScalarField.C
index af4fce40e..c2df23e43 100644
--- a/src/thermophysicalModels/radiation/derivedFvPatchFields/wideBandDiffusiveRadiation/wideBandDiffusiveRadiationMixedFvPatchScalarField.C
+++ b/src/thermophysicalModels/radiation/derivedFvPatchFields/wideBandDiffusiveRadiation/wideBandDiffusiveRadiationMixedFvPatchScalarField.C
@@ -79,23 +79,30 @@ wideBandDiffusiveRadiationMixedFvPatchScalarField
     TName_(dict.lookup("T")),
     emissivity_(readScalar(dict.lookup("emissivity")))
 {
-    const scalarField& Tp =
-        lookupPatchField<volScalarField, scalar>(TName_);
-
-    refValue() =
-        emissivity_*4.0*radiation::sigmaSB.value()*pow4(Tp)
-       /Foam::mathematicalConstant::pi;
-    refGrad() = 0.0;
-
     if (dict.found("value"))
     {
         fvPatchScalarField::operator=
         (
             scalarField("value", dict, p.size())
         );
+        refValue() = scalarField("value", dict, p.size());
+
+        refGrad() = 0;
+        valueFraction() = 1;
     }
     else
     {
+        // No value given. Restart as fixedValue b.c.
+
+        // Bugfix: Do not initialize from temperautre because it is unavailable
+        // when running, e.g. decomposePar and loading radiation as
+        // shared library. Initialize to zero instead.
+        // 26 Mar 2014 - DC
+        refValue() = 0;
+
+        refGrad() = 0;
+        valueFraction() = 1;
+
         fvPatchScalarField::operator=(refValue());
     }
 }