The Rothen Group were instructed to undertake the downstream lock gate repair at Kegworth Deep Lock on the River Sour.
The Project
The lock had been subject to works during the winter stoppage season but ongoing adverse weather prevented Canal and River Trust's in house team from carrying out the repair to the downstream gates.
After the upstream gates had been repaired, users were reporting it took 45 minutes to fill the lock and needed two people to open the gate as water pressure didn’t equalise.
The works involved repairing a severe boil on the topside heel of the post, replacing fenders, the top beam required replacing and both downstream gates needed re-planking. off side gate heel post which had internal rot, a broken fender,
Our site was set up using Heras fencing and K guard to prevent access to the public. CRT had the required stop planks in their nearby hopper – these were used along with a TRG sealing sheet and the lock fully drained. The site was made more challenging with remote access so all materials were floated to site and lifted into position with our 40ft crane boat that also provided welfare during the works.
The River went into flood multiple times while the stop planks were in, on one occasion the dam failed and needed resetting. With the stop planks re-installed additional measures were taken ensure the stop planks remained in place for the remainder of the work regardless of water levels.
During the drain down, The Rothen Group inspected the paddles and found one of the ground paddles very close to failure with the seals disintegrated and the connection between paddle and the rod was worn through and at risk of failure. The repair to both was investigated, quoted, agreed and remedied within this stoppage and de-watering; saving further inconvenience for users as well as a future de-watering to repair the paddle.
The time taken to fill the lock had reduced from 45 minutesand two people down to 8 minutes to completely fill the lock.
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