1." style="box-sizing: border-box;background: transparent">CCTV detection robot Water should not be carried out. When the site conditions can not be met, measures should be taken to reduce the water level to ensure that the water level in the pipeline is not greater than 20% of the diameter of the pipeline.   

2. When the water level in the pipeline does not meet the requirements of the first clause of the regulation, the pipeline should be blocked and guided before testing, so that the water level in the pipe can meet the testing requirements.   

3, before conducting structural testing, dredging and cleaning of detected pipelines should be done.   

♔4, when there is one of the following situations, the detection shall be suspended.

💟(1) when the crawler is unable to walk in the pipeline or when the putter is unable to advance in the pipeline,

(2) when the lens is stained with dirt,

(3) when the lens is immersed in water;

✤(4) when the pipeline is filled with fog, the image quality will be affected.

(5) other reasons can not be detected normally.