Manufacturing AUTOMATION

Worker critically injured on production line; Uponor Infra fined $80K

October 17, 2018
By Manufacturing AUTOMATION

October 17, 2018 – Uponor Infra, a Hamilton, Ontario company that manufactures plastic piping, has been fined $80,000 after pleading guilty to an offence that involved a worker suffering critical injuries after being pulled into a machine while it was still in operation.

The court also imposed a 25-per-cent victim fine surcharge as required by the Provincial Offences Act. The surcharge is credited to a special provincial government fund to assist victims of crime.

According to the Ministry of Labour, Uponor Infra’s manufacturing process includes feeding plastic pipes into large machines called extruders. The extruders have internal tracks that guide the pipes through the machinery while they are being formed into the required sizes.

On March 25, 2017, a worker was assigned to operate one of the extruders. The worker did not normally perform this task. While working on the extruder, the worker told the supervisor that the pipes inside the machine were slipping off their tracks. The supervisor instructed the worker to get under the machine while it was still in operation and clean the tracks in order to stop the pipes from slipping so the production line could continue working.


The worker complied and climbed under the machine. While cleaning one of the tracks, a sleeve got caught by a rotating drive shaft and the worker was pulled into the extruder. A nearby worker pushed an emergency stop button and called for help.

The worker was extricated by emergency responders and remained hospitalized for several months.

The investigation by the Ministry of Labour revealed that there was no guard in place to prevent access to exposed moving parts inside the extruder.

Although Uponor had policies and procedures about shutting down or locking out machinery before performing any cleaning or maintenance, it was common practice in the workplace to clean the tracks while the machinery was in operation. The supervisor confirmed that workers cleaned the extruder in the same manner three to four times during a normal shift; the supervisor had done so twice already during the same shift.

The Minsitry of Labour says that Section 75 of Ontario Regulation 851 (the Industrial Establishments Regulation) requires that a part of a machine shall only be cleaned or have maintenance work performed on it when a) motion that may endanger a worker has stopped, and b) any part that has been stopped and that may subsequently move and endanger a worker has been blocked to prevent its movement.

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