Managing A Long Liner & Resin (309′ x 8″ Diameter)

This past week, a brand new customer had a 309’ by 8” diameter pipe to line. It was spec’d out to be epoxy and served a school drain in central Missouri. The pipe needed extensive cleaning and leaked and the school district wanted the pipe repaired for health safety reasons. The resin demand for this job required a mix of 618#s of resin and we suggested that the customer use our 60 minute resin. The challenge was to mix, wet out and invert the 309’ liner followed by a 319’ calibration tube and get it all done before the resin kicked off.

We know that the resin will begin curing after 60 minutes if the resin temperature is 77F, but we also know that if we chill the resin we can get up to 3 hours of working time out of the resin if we get the resin temperature close to the 50F range. In our planning we decided that we could mix, wet out, calibrate and install the liner in less than 3 hours. We also decided that we would need lots of ice, an assignment of duties by crew member, and a set up that would allow us to invert the liner as it came off the calibration roller. Here’s the set up to accomplish that.

Setting up a job properly is key to a successful job!

Calibration roller to Quik-Shot™ Set Up
Once we had the set up prepared, insuring that we had shade to prevent UV affects from accelerating our resin cure. The next challenge was to shoot down the chimney of the manhole and make the 90 degree turn at the bottom of the line. To accomplish this we prepared a guide tube to let the liner follow it through the turn and into the pipe. This was our access.

Manhole Access

Manhole access
We brought in ice to keep the resin chilled as well as the wet out and dry portions of the liner so it would be hot as we completed the inversion process. The liner would invert at over 100’ per minute however the wet out calibration proceeded at a much slower pace to insure we eliminated all of the air en trained in the liner as we went. We accomplished the wet out at about 10’ per minute taking a little over ½ hour of actual calibration. Mixing resin batches in steps took additional time as we mixed 80#’s of resin at a time and vacuumed the liner through multiple ports as we went. We maintained vacuum of the liner in segments and patched the vacuumed ports with Tear Aid™, a patch product we carry to patch lining and calibration material that have holes in them.

By the time we got to the end of the liner finishing the wet out, we had ½ of the liner already in the ground, so the last 155 feet of the liner went in in less than 2 minutes. Once in we were ready for the calibration tube and here’s a picture of the installer shooting the calibration tube.

Getting the job done!

Shooting in the calibration tube
Once in, we were in the ground, we set up 2 heaters to build enough heat to cook the 309’ liner. We prepared 2 of the Quik-Heaters that produce 199,000 BtuH of heat and plumbed them in parallel feeding a 2” manifold that fed a 2” re-circulation hose to the far end of the calibration tube. In order to overcome the heat loss of the pipe the two heaters worked for 4 hours to get enough temperature to cure the line.

The job was completed by a brand new contractor doing his very first job that was a more complicated job but the Quik-Shot™ and other Quik Lining tools made the job doable. Great training day and another Pipe Lining Supply contractor who’s ready willing and able to perform CIPP lining work with his new tools and knowledge.

If you would like to learn more about this job, or how we can help you, call 888-354-6464 or email

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