Going into a job without knowing anything is absolutely scary. This same scenario is true when you attempt to fix your broken pipes without proper knowledge and equipment. There are possibilities that lateral connections are missed so with some turns and bends and oftentimes the liner was at its wrong length due to inaccurate measurement. How then would you be able to find out the necessary information you are looking for? Only three things you should have here are that includes a tape measure, a CCTV video inspection camera, and common sense. Consider the following points when you inspect pipeline for potential leaks:
1. Line Verification – Check if you have mistakenly lined a sewer lateral as it happens sometimes. You have already opened your pipe and cleaned it only to find out that it is not the exact pipe in need of relining.
2. Camera Work – Clean the drain thoroughly then stick a camera into your pipe for cleanliness verification. The drain needs to be drained so that you will not find any visible clumps of debris or line over roots. This will help you verify your pipe’s diameter and observe the camera to note offset joints, cracked joints, turns, main connections, diameter changes, tie-ins and other issues when lining the pipe.
3. Taking Notes – Note the issues mentioned earlier on the paper map of your line along with their turn and occurrence. Whatever you have observed in your camera during the inspection must be documented for the repair. This approach imperative when time came that you will have to execute the relining.
4. Non-pipe Issues – There would be evidence of concerns that are not associated with your pipe including missing section of pipe belly, missing pipe bottom or invert, and ground water. Take a look at the necessity of pre-lining to wash out resin prevention in ground water or to keep your pipe round than shaping the cast iron without bottom.
5. Placing Tape On Camera Cable – It would help if you mark tape on the camera cable when you place the camera head where you want it to end to measure the actual length when it is removed.
6. Verification of the Distance to the Diameter – It is advisable to verify the distance of the liner to its diameter change and record the required size for each alongside its transition. The liner can grow in necking down procedure and shrink in its expansion section.
7. Consideration of Debris – Examine any debris that should be removed before putting the liner into your host pipe. Check if the pipe is so fragile that can cause the pipe to collapse due to heavy cleaning. This may need less pressure and more water instead of cleaning at high pressure.
These are the issues that can be revealed to you by your tape measure, camera and common sense during the pre-lining inspection. You are definitely prepared for pipe relining if the things mentioned above are properly addressed.