diff --git a/AsbCloudInfrastructure/Background/PeriodicBackgroundWorker.cs b/AsbCloudInfrastructure/Background/PeriodicBackgroundWorker.cs
index dedd6d83..edc3aa8e 100644
--- a/AsbCloudInfrastructure/Background/PeriodicBackgroundWorker.cs
+++ b/AsbCloudInfrastructure/Background/PeriodicBackgroundWorker.cs
@@ -17,8 +17,8 @@ public class PeriodicBackgroundWorker : BackgroundService
     private readonly TimeSpan executePeriod = TimeSpan.FromSeconds(10);
     private readonly TimeSpan minDelay = TimeSpan.FromSeconds(1);
     private readonly IServiceProvider serviceProvider;
-
     private readonly List<WorkPeriodic> works = new(8);
+    private bool isRuning = false;
 
     /// <summary>
     /// Список периодических работ
@@ -42,6 +42,9 @@ public class PeriodicBackgroundWorker : BackgroundService
 
     protected override async Task ExecuteAsync(CancellationToken token)
     {
+        if (isRuning)
+            return;
+        isRuning = true;
         Trace.TraceInformation($"{GetType().Name} started");
         while (!token.IsCancellationRequested)
         {
@@ -74,6 +77,7 @@ public class PeriodicBackgroundWorker : BackgroundService
                 Trace.TraceError(MainLoopLastException);
             }
         }
+        isRuning = false;
     }
 
     /// <summary>