diff --git a/source/branches/BaM_Dev/Model/Irradiation/IM_Matrix.cxx b/source/branches/BaM_Dev/Model/Irradiation/IM_Matrix.cxx
index 8b0fcd201c43f392a8965ec29d75b183ee22c59f..0f81e9fcc1ca60ebc16a4e0b61166831546f8c3c 100644
--- a/source/branches/BaM_Dev/Model/Irradiation/IM_Matrix.cxx
+++ b/source/branches/BaM_Dev/Model/Irradiation/IM_Matrix.cxx
@@ -259,10 +259,10 @@ EvolutionData IM_Matrix::GenerateEvolutionData(IsotopicVector isotopicvector, Ev
 		}
 
 		GeneratedDB.NucleiInsert(pair<ZAI, TGraph*> (fReverseMatrixIndex[i], new TGraph(NMatrix.size(), timevector, ZAIQuantity)));
-		GeneratedDB.FissionXSInsert(pair<ZAI, TGraph*> (fReverseMatrixIndex[i], new TGraph(NStep, timevector, FissionXS)));
+/*		GeneratedDB.FissionXSInsert(pair<ZAI, TGraph*> (fReverseMatrixIndex[i], new TGraph(NStep, timevector, FissionXS)));
 		GeneratedDB.CaptureXSInsert(pair<ZAI, TGraph*> (fReverseMatrixIndex[i], new TGraph(NStep, timevector, CaptureXS)));
 		GeneratedDB.n2nXSInsert(pair<ZAI, TGraph*> (fReverseMatrixIndex[i], new TGraph(NStep, timevector, n2nXS)));
-	}
+*/	}
 
 	GeneratedDB.SetPower(Power );
 	GeneratedDB.SetHeavyMetalMass(M);
diff --git a/source/branches/BaM_Dev/Model/Irradiation/IM_RK4.cxx b/source/branches/BaM_Dev/Model/Irradiation/IM_RK4.cxx
index 8fe82f0cc964985b5ce649dcdd8750d60b718200..b79adb743f7d65f0be0f2183822d8b71fabc942d 100644
--- a/source/branches/BaM_Dev/Model/Irradiation/IM_RK4.cxx
+++ b/source/branches/BaM_Dev/Model/Irradiation/IM_RK4.cxx
@@ -248,10 +248,10 @@ EvolutionData IM_RK4::GenerateEvolutionData(IsotopicVector isotopicvector, Evolu
 		}
 
 		GeneratedDB.NucleiInsert(pair<ZAI, TGraph*> (fReverseMatrixIndex[i], new TGraph(NMatrix.size(), timevector, ZAIQuantity)));
-		GeneratedDB.FissionXSInsert(pair<ZAI, TGraph*> (fReverseMatrixIndex[i], new TGraph(NStep, timevector, FissionXS)));
+/*		GeneratedDB.FissionXSInsert(pair<ZAI, TGraph*> (fReverseMatrixIndex[i], new TGraph(NStep, timevector, FissionXS)));
 		GeneratedDB.CaptureXSInsert(pair<ZAI, TGraph*> (fReverseMatrixIndex[i], new TGraph(NStep, timevector, CaptureXS)));
 		GeneratedDB.n2nXSInsert(pair<ZAI, TGraph*> (fReverseMatrixIndex[i], new TGraph(NStep, timevector, n2nXS)));
-	}
+*/	}
 	DBGL
 	GeneratedDB.SetPower(Power );
 	GeneratedDB.SetHeavyMetalMass(M);
diff --git a/source/branches/BaM_Dev/include/EvolutionData.hxx b/source/branches/BaM_Dev/include/EvolutionData.hxx
index df13f19c842e914258dbe9b546b4bc8e7c085e40..94be6c6e1189f2eeb9f8e43dab4f406bb7973c87 100755
--- a/source/branches/BaM_Dev/include/EvolutionData.hxx
+++ b/source/branches/BaM_Dev/include/EvolutionData.hxx
@@ -116,6 +116,9 @@ public :
 	 In some case needed to be called to avoid memory leaks.
 	 */
 	void DeleteEvolutionData();
+	
+	void DeleteEvolutionDataCopy();
+
 	//}
 	
 	//@}
diff --git a/source/branches/BaM_Dev/src/EvolutionData.cxx b/source/branches/BaM_Dev/src/EvolutionData.cxx
index a71bd88f718f7e090ca34ae66098bce5062bd7f2..8d0b1154e26b35185a792c2f3d259f41c98ccdeb 100755
--- a/source/branches/BaM_Dev/src/EvolutionData.cxx
+++ b/source/branches/BaM_Dev/src/EvolutionData.cxx
@@ -350,6 +350,7 @@ EvolutionData::EvolutionData():CLASSObject()
 	fCycleTime = 0;
 	fKeff = 0;
 	fFlux = 0;
+	fDB_file = "";
 }
 
 //________________________________________________________________________
@@ -360,6 +361,7 @@ EvolutionData::EvolutionData(CLASSLogger* log):CLASSObject(log)
 	fCycleTime = 0;
 	fKeff = 0;
 	fFlux = 0;
+	fDB_file = "";
 }
 
 //________________________________________________________________________
@@ -410,7 +412,7 @@ EvolutionData::EvolutionData(bool oldread, CLASSLogger* log, string DB_file, boo
 //________________________________________________________________________
 EvolutionData::~EvolutionData()
 {
-	
+
 }
 //________________________________________________________________________
 void EvolutionData::DeleteEvolutionData()
@@ -450,10 +452,56 @@ void EvolutionData::DeleteEvolutionData()
 	
 	fFlux = 0;
 	fKeff = 0;
+
 	
 }
 
 
+//________________________________________________________________________
+void EvolutionData::DeleteEvolutionDataCopy()
+{
+	
+	if(fDB_file=="")
+	{
+		map<ZAI ,TGraph* >::iterator it_del;
+		
+		for( it_del = fInventoryEvolution.begin(); it_del != fInventoryEvolution.end(); it_del++)
+		{
+			delete (*it_del).second;
+			(*it_del).second = 0;
+		}
+		for( it_del = fFissionXS.begin(); it_del != fFissionXS.end(); it_del++)
+		{
+			delete (*it_del).second;
+			(*it_del).second = 0;
+		}
+		for( it_del = fCaptureXS.begin(); it_del != fCaptureXS.end(); it_del++)
+		{
+			delete (*it_del).second;
+			(*it_del).second = 0;
+		}
+		for( it_del = fn2nXS.begin(); it_del != fn2nXS.end(); it_del++)
+		{
+			delete (*it_del).second;
+			(*it_del).second = 0;
+		}
+		
+		
+		delete	fKeff;
+		delete	fFlux;
+		
+		fInventoryEvolution.clear();
+		fFissionXS.clear();
+		fCaptureXS.clear();
+		fn2nXS.clear();
+		
+		fFlux = 0;
+		fKeff = 0;
+	}
+	
+	
+}
+
 bool EvolutionData::NucleiInsert(pair<ZAI, TGraph*> zaitoinsert)
 {
 	
diff --git a/source/branches/BaM_Dev/src/FabricationPlant.cxx b/source/branches/BaM_Dev/src/FabricationPlant.cxx
index 3043bc3ba2d245747ce6e3b0418db27454d97d3f..b76ba2a32db1cbe98dfcc40ee2da47ed03d0094e 100644
--- a/source/branches/BaM_Dev/src/FabricationPlant.cxx
+++ b/source/branches/BaM_Dev/src/FabricationPlant.cxx
@@ -527,7 +527,7 @@ DBGL
 		(*it2).second = IV;
 
 	map< int,EvolutionData >::iterator it = fReactorFuturDB.find(Id);
-	(*it).second = EvolutionData();
+	(*it).second.DeleteEvolutionDataCopy();
 
 	UpdateInsideIV();
 DBGL
diff --git a/source/branches/BaM_Dev/src/Reactor.cxx b/source/branches/BaM_Dev/src/Reactor.cxx
index c49d26cc637d0fe8a8274dfb0707715684aa2354..5e21dee9430628bef5a99e2da6a2df4a3d35c8b6 100755
--- a/source/branches/BaM_Dev/src/Reactor.cxx
+++ b/source/branches/BaM_Dev/src/Reactor.cxx
@@ -243,7 +243,7 @@ Reactor::Reactor(CLASSLogger* log, EvolutionData* evolutivedb,
 {
 	DBGL
 	(*this).SetName("R_Reactor.");
-	
+
 	
 	fIsStarted = false;
 	fIsShutDown = false;
@@ -284,8 +284,7 @@ Reactor::Reactor(CLASSLogger* log, EvolutionData* evolutivedb,
 	INFO << "\t The Cycle Time set at\t " << ((double)fCycleTime)/((double)cYear) << " year" << endl;
 	INFO << "\t The Effective Thermal Power is \t " << (double)(fPower *1e-6) << " MW (with Full Power " << power << " and " << CapacityFactor << " capacity factor)"<< endl;
 	INFO << "\t The Heavy Metal Mass in the Core set at " << (double)(fHeavyMetalMass) << " tons" << endl << endl;
-	
-	
+		
 	DBGL
 }
 
@@ -399,6 +398,9 @@ void Reactor::SetBurnUp(double BU)
 void Reactor::SetEvolutionDB(EvolutionData evolutionDB)
 {
 	DBGL
+	
+	//fEvolutionDB.DeleteEvolutionDataCopy();
+	
 	double M0 = cZAIMass.GetMass( evolutionDB.GetIsotopicVectorAt(0.).GetActinidesComposition() );
 	fEvolutionDB = evolutionDB * (fHeavyMetalMass/M0);
 	
diff --git a/source/branches/BaM_Dev/src/XSModel.cxx b/source/branches/BaM_Dev/src/XSModel.cxx
index 97e3f5a0c341ef0cb0e4ee0abc8a1d60296ef082..8ca202826c8b8b34052f8025dd558dd274482edc 100644
--- a/source/branches/BaM_Dev/src/XSModel.cxx
+++ b/source/branches/BaM_Dev/src/XSModel.cxx
@@ -19,6 +19,8 @@ using namespace std;
 XSModel::XSModel():CLASSObject()
 {
 	XSModel::LoadKeyword();
+//	freaded = false;
+
 }
 
 
@@ -26,6 +28,7 @@ XSModel::XSModel(CLASSLogger* log):CLASSObject(log)
 {
 	
 	XSModel::LoadKeyword();
+//	freaded = false;
 }