Excerpt from the government of Ontario’s ‘Newsroom’
A worker, employed by Universal Structural Restoration Ltd. (USRL), a construction restoration company specializing in balcony reconstruction and waterproofing, who was on the platform of a boom, was killed when the boom lost stability and tipped over.
The company had been hired to repair damaged brickwork on the exterior walls, window painting and flashing of the building.
A company-owned power elevated work platform known as a Genie Boom was brought to the project to allow workers to reach the upper levels of the building. The boom has a worker platform, containing operational controls and can be elevated to 60 feet by a hydraulically powered jib and primary and secondary booms. The booms are attached to the body of the equipment which moves at ground level on four wheels.
On August 19, 2016, the equipment was positioned on sheets of plywood on the grass surface on a slight slope. While elevating the platform to a height of between 50 to 60 feet, the equipment lost stability and was out of control, then tipped over. The worker was ejected from the platform and landed on a concrete driveway, suffering fatal injuries.
The Ministry of Labour investigated and an MOL engineer examined the equipment and ground conditions to determine the cause of the tip-over.
The boom’s equipment included two limit switches that functioned to sense when the primary boom was raised or extended. It was determined that one of the limit switches located at the end of the secondary boom was tied back with a piece of green wire. The arm of the second limit switch at the side of the primary boom was folded back so that it did not function either.
Defeating the limit switches in this fashion resulted in the electronic control system for the boom to sense that the boom was always in the stowed (or lower) position, regardless of the actual position of the primary boom, so that lock-out wedges would not extend to stabilize the boom.
The service manual for the boom stated the importance of the lock-out wedges and that the machine could tip over. The slope of the incident area was a contributing factor because the boom sections were only permitted by the manufacturer to be raised or extended on level ground.
Following a guilty plea, USRL was fined $125,000 by Justice of the Peace Leslie Kirke in Toronto Old City Hall court; Crown Counsel Dan Kleiman.
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.
The law(s) in contravention:
USRL was found guilty of a contravention of the Ontario ‘Construction Projects’ sector regulation 213/91, section 95, subsection 2 which states,
“No modification to, extension to, repair to or replacement of a part of a vehicle, machine, tool or equipment shall result in a reduction of the safety factor of the vehicle, machine, tool or equipment.”
This is contrary to the Ontario Occupational Health and Safety Act (OHSA) section 25, subsection 1(c) which states,
“An employer shall ensure that,
(c) the measures and procedures prescribed are carried out in the workplace.”
A proper inspection of the equipment, before delivery b y the owner, and by the competently trained operator, would have found the defect and tagged the machine out.
The slope alarm is an integral component of the safety equipment and MUST be in good working order.
HRS Group Inc. has a great team that can help you with all your health and safety needs including training in Working at Heights (WAH) as well as competency training for Elevating Work Platforms (EWP).
Contact Deborah toll free at 1-877-907-7744 or locally at 705-749-1259. We can also be reached at firstname.lastname@example.org
Ensure your workplace is a safe place.
Remember – In Ontario, “ALL Accidents are Preventable”
‘Work’ and ‘Play’ safe.
Daniel L. Beal
CHSEP – Advanced Level
VP & Senior Trainer
HRS Group Inc.