diff --git a/AsbCloudWebApi.Tests/Builders/DetectableTelemetryBuilder.cs b/AsbCloudWebApi.Tests/Builders/DetectableTelemetryBuilder.cs
new file mode 100644
index 00000000..f0acdc09
--- /dev/null
+++ b/AsbCloudWebApi.Tests/Builders/DetectableTelemetryBuilder.cs
@@ -0,0 +1,69 @@
+using System;
+using AsbCloudInfrastructure.Services.DetectOperations;
+
+namespace AsbCloudWebApi.Tests.Builders;
+
+public class DetectableTelemetryBuilder
+{
+	private DateTimeOffset dateTime = DateTimeOffset.UtcNow;
+	private float wellDepth = 300;
+	private float pressure = 15;
+	private float hookWeight = 20;
+	private float blockPosition = 20;
+	private float bitDepth = 151;
+	private float axialLoad = 19;
+
+	public DetectableTelemetryBuilder WithDateTime(DateTimeOffset newDateTime)
+	{
+		dateTime = newDateTime;
+		return this;
+	}
+
+	public DetectableTelemetryBuilder WithWellDepth(float newWllDepth)
+	{
+		wellDepth = newWllDepth;
+		return this;
+	}
+
+	public DetectableTelemetryBuilder WithPressure(float newPressure)
+	{
+		pressure = newPressure;
+		return this;
+	}
+
+	public DetectableTelemetryBuilder WithHookWeight(float newHookWeight)
+	{
+		hookWeight = newHookWeight;
+		return this;
+	}
+
+	public DetectableTelemetryBuilder WithBlockPosition(float newBlockPosition)
+	{
+		blockPosition = newBlockPosition;
+		return this;
+	}
+
+	public DetectableTelemetryBuilder WithBitDepth(float newBitDepth)
+	{
+		bitDepth = newBitDepth;
+		return this;
+	}
+
+	public DetectableTelemetryBuilder WithAxialLoad(float newAxialLoad)
+	{
+		axialLoad = newAxialLoad;
+		return this;
+	}
+
+	public DetectableTelemetry Build() =>
+		new()
+		{
+			DateTime = dateTime,
+			WellDepth = wellDepth,
+			Pressure = pressure,
+			HookWeight = hookWeight,
+			BlockPosition = blockPosition,
+			BitDepth = bitDepth,
+			AxialLoad = axialLoad
+		};
+}
\ No newline at end of file
diff --git a/AsbCloudWebApi.Tests/Services/DetectedOperations/Detectors/DetectorSlipsTimeTests.cs b/AsbCloudWebApi.Tests/Services/DetectedOperations/Detectors/DetectorSlipsTimeTests.cs
new file mode 100644
index 00000000..ac8c373c
--- /dev/null
+++ b/AsbCloudWebApi.Tests/Services/DetectedOperations/Detectors/DetectorSlipsTimeTests.cs
@@ -0,0 +1,109 @@
+using System;
+using AsbCloudInfrastructure.Services.DetectOperations.Detectors;
+using AsbCloudWebApi.Tests.Builders;
+using Xunit;
+
+namespace AsbCloudWebApi.Tests.Services.DetectedOperations.Detectors;
+
+public class DetectorSlipsTimeTests
+{
+	private const int IdSlipsTime = 5011;
+
+	private readonly DetectableTelemetryBuilder telemetryBuilder = new();
+
+	private readonly DetectorSlipsTime sut = new();
+
+	[Fact]
+	public void DetectOperation_by_change_block_position_and_axial_load_less_hook_weight_is_success()
+	{
+		//arrange
+		var point0 = telemetryBuilder
+			.Build();
+
+		var point1 = telemetryBuilder
+			.WithBlockPosition(21)
+			.Build();
+
+		var telemetries = new[] { point0, point1 };
+
+		//act
+		var isDetectOperation = sut.TryDetect(0, telemetries, 0, telemetries.Length - 1, null, out var result);
+
+		//assert
+		Assert.True(isDetectOperation);
+		Assert.NotNull(result);
+		Assert.Equal(IdSlipsTime, result.Operation.IdCategory);
+	}
+
+	[Fact]
+	public void DetectOperation_by_high_pressure_is_success()
+	{
+		//arrange
+		var point0 = telemetryBuilder
+			.Build();
+
+		var point1 = telemetryBuilder
+			.WithBlockPosition(21)
+			.WithAxialLoad(30)
+			.WithHookWeight(20)
+			.WithPressure(23)
+			.Build();
+
+		var telemetries = new[] { point0, point1 };
+
+		//act
+		var isDetectOperation = sut.TryDetect(0, telemetries, 0, telemetries.Length - 1, null, out var result);
+
+		//assert
+		Assert.True(isDetectOperation);
+		Assert.NotNull(result);
+		Assert.Equal(IdSlipsTime, result.Operation.IdCategory);
+	}
+
+	[Fact]
+	public void ValidateOperation_with_well_depth_before_150_meters_is_invalid()
+	{
+		//arrange
+		var point0 = telemetryBuilder
+			.WithBitDepth(149)
+			.Build();
+
+		var point1 = telemetryBuilder
+			.WithBitDepth(149)
+			.WithBlockPosition(21)
+			.Build();
+
+		var telemetries = new[] { point0, point1 };
+
+		//act
+		var isDetectOperation = sut.TryDetect(0, telemetries, 0, telemetries.Length - 1, null, out var result);
+
+		//assert
+		Assert.False(isDetectOperation);
+		Assert.NotNull(result);
+		Assert.Equal(IdSlipsTime, result.Operation.IdCategory);
+	}
+
+	[Fact]
+	public void ValidateOperation_with_duration_more_30_minutes_is_invalid()
+	{
+		//arrange
+		var point0 = telemetryBuilder
+			.Build();
+
+		var point1 = telemetryBuilder
+			.WithDateTime(DateTimeOffset.UtcNow.AddMinutes(30))
+			.WithBlockPosition(21)
+			.Build();
+
+		var telemetries = new[] { point0, point1 };
+
+		//act
+		var isDetectOperation = sut.TryDetect(0, telemetries, 0, telemetries.Length - 1, null, out var result);
+
+		//assert
+		Assert.False(isDetectOperation);
+		Assert.NotNull(result);
+		Assert.Equal(IdSlipsTime, result.Operation.IdCategory);
+	}
+}
\ No newline at end of file