Title/Name/Summary
Emergency 151st Street Sanitary Sewer Lining - Payment
History
On Wednesday, April 10th, the Utility Division Vactor truck was sent out to try and retrieve a jet head that was stuck in a 10-inch sanitary sewer main located on 151st Street west of Wolf Road (Exhibit attached). The main was installed in1989 and is more than 30 feet deep. The jet head was used to break-up a blockage, but had to be cut off due to it becoming lodged in the main. Staff was successful in breaking the blockage but was unable to retrieve the jet head. The Utility Division attempted to televise the main to locate the jet head. The camera could only be inserted a few feet due to severe tuberculation and the high risk of it becoming lodged. Several attempts were made to clean the main and retrieve the jet head using the equipment on hand. Standard Equipment, the supplier of the Vactor, was contacted for a solution. Standard Equipment loaned a demo head for our use and it got stuck about 15 feet from the eastern manhole.
To prevent further issues, staff contacted Airy’s, Inc. of Tinley Park, Illinois to assist with the removal of the lodged jet head. Airy’s has helped with similar situations in the past. They suggested televising from the eastern manhole to get a better understanding of the complication. About 15 feet west of the manhole, ¾” stone was found surrounding the jet head preventing it from moving. Airy’s set up their Vactor and suction hose to try and remove the stone around the jet head while staff pulled back with the village’s Vactor. After several hours of vacuuming, the jet head was able to be removed. Airy’s continued to vacuum stone for five (5) more days to facilitate televising the main to determine the condition of the pipe. Upon completion of the cleaning, several pipe failures were found. The source of the stone was determined to be the backfill from around the pipe, entering through the holes and missing sections. Immediate action was require...
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