diff --git a/ProjectPlane/ProjectPlane/SetPlanesGeneric.cs b/ProjectPlane/ProjectPlane/SetPlanesGeneric.cs
index ef15c44..3212255 100644
--- a/ProjectPlane/ProjectPlane/SetPlanesGeneric.cs
+++ b/ProjectPlane/ProjectPlane/SetPlanesGeneric.cs
@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 
 namespace ProjectPlane
 {
-    internal class SetPlanesGeneric<T> where T : class
+    internal class SetPlanesGeneric<T> where T : class, IEquatable<T>
     {
 		/// <summary>
 		/// Список объектов, которые храним
@@ -43,12 +43,11 @@ namespace ProjectPlane
 		/// <returns></returns>
 		public int Insert(T plane, int position)
 		{
-			if (Count == _maxCount) throw new StorageOverflowException(_maxCount);
+			if (_places.Contains(plane)) return -1;
 
-			if (position < 0 || position >= _maxCount) return -1;
+			if (position < 0 || position >= _maxCount) throw new StorageOverflowException(_maxCount);
 			_places.Insert(position, plane);
 			return position;
-			
 		}
 		/// <summary>
 		/// Удаление объекта из набора с конкретной позиции
@@ -102,5 +101,14 @@ namespace ProjectPlane
 				}
 			}
 		}
+		public void SortSet(IComparer<T> comparer)
+		{
+			if (comparer == null)
+			{
+				return;
+			}
+			_places.Sort(comparer);
+		}
+
 	}
 }