diff --git a/PROMS/Volian.Controls.Library/StepTabRibbon.cs b/PROMS/Volian.Controls.Library/StepTabRibbon.cs
index 63170843..0aa57477 100644
--- a/PROMS/Volian.Controls.Library/StepTabRibbon.cs
+++ b/PROMS/Volian.Controls.Library/StepTabRibbon.cs
@@ -1034,6 +1034,13 @@ namespace Volian.Controls.Library
 			if (ContActionSummaryRequest != null)
 				ContActionSummaryRequest(this, args);
 		}
+		// F2022-024 Time Critical Action Summary
+		public event StepTabRibbonEvent TimeCriticalActionSummaryRequest;
+		private void OnTimeCriticalActionSummaryRequest(StepTabRibbonEventArgs args)
+		{
+			if (TimeCriticalActionSummaryRequest != null)
+				TimeCriticalActionSummaryRequest(this, args);
+		}
 		public event StepTabRibbonEvent AddProcToDVInTree;
 		private void OnAddProcToDVInTree(StepTabRibbonEventArgs args)
 		{
@@ -1753,9 +1760,15 @@ namespace Volian.Controls.Library
 			btnEditMode.Enabled = btnCMEditMode1.Enabled = setting;
 			if (((MyItemInfo.ActiveFormat.PlantFormat.FormatData.PurchaseOptions.Value & E_PurchaseOptions.EnhancedBackgrounds) == E_PurchaseOptions.EnhancedBackgrounds) ||
 				((MyItemInfo.ActiveFormat.PlantFormat.FormatData.PurchaseOptions.Value & E_PurchaseOptions.EnhancedDeviations) == E_PurchaseOptions.EnhancedDeviations))
+			{
 				btnCASCreate.Enabled = false;
+				btnTCASCreate.Enabled = false; // F2022-024 Time Critical Action Summary button
+			}
 			else
+			{
 				btnCASCreate.Enabled = (MyEditItem != null) ? (MyEditItem.MyStepPanel.ApplDisplayMode > 0) : false;
+				btnTCASCreate.Enabled = btnCASCreate.Enabled; // F2022-024 Time Critical Action Summary button
+			}
 			// B2016-237 added context menu item to change image size
 			// B2020-058 added check for null MyEditItem
 			btnCMImgSz.Enabled = MyEditItem!=null && MyEditItem.MyItemInfo.IsFigure && (MyEditItem.MyItemInfo.MyContent.MyImage != null || MyEditItem.MyItemInfo.MyContent.Text.ToUpper().Contains("#LINK"));
@@ -4731,6 +4744,14 @@ namespace Volian.Controls.Library
 			MyFlexGrid.Invalidate();
 		}
 		#endregion
+
+		// F2022-024 Time Critical Action Summary
+		private void btnTCASCreate_Click(object sender, EventArgs e)
+		{
+			if (MyItemInfo == null) return;   // if creating a Time Critical Action Summary before rtb exists, return;
+			if (MyEditItem != null) MyEditItem.SaveCurrentAndContents();
+			OnTimeCriticalActionSummaryRequest(new StepTabRibbonEventArgs(MyItemInfo.MyProcedure));
+		}
 	}
 	public class StepTabRibbonEventArgs : EventArgs
 	{
diff --git a/PROMS/Volian.Controls.Library/StepTabRibbon.designer.cs b/PROMS/Volian.Controls.Library/StepTabRibbon.designer.cs
index f9aaf819..3d5e3c05 100644
Binary files a/PROMS/Volian.Controls.Library/StepTabRibbon.designer.cs and b/PROMS/Volian.Controls.Library/StepTabRibbon.designer.cs differ