Working at height Walking/ working on a roof. Corporate Health & Safety 2011. Summary. Introduction Return of experiences Main causes of accident General rules Walking/ working on a flat roof Working on an inclined roof Practical exercice. Introduction.
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Working at heightWalking/ working on a roof Corporate Health & Safety 2011
Summary • Introduction • Return of experiences • Main causes of accident • General rules • Walking/ working on a flat roof • Working on an inclined roof • Practical exercice
Introduction As far as falling of persons is concerned, roofs are very dangerous ! At the beginning of 2010 (4 months) 4 serious occurrences have been reported in ArcelorMittal concerning working and/or moving on a roof in our plants leading to : 3 fatalities In 2008/2009 8 serious occurrences have been reported in ArcelorMittal concerning such activities in our plants leading to : 3 fatalities Very often, application of simple rules would have avoided such incidents, all related to existing rules or common sense (no respect of Golden Rules). You are the only one able to stop it! If you don’t, we’ll surely go on with fatalities + injured people every year !
Rex February 2010 Fatality Work: removal snow works on the roof of the Rail Finishing Bay The worker falls from the roof 20 m high
Rex May 2010 Fatality Work: install an additional drain pump on the concrete roof (slab) of the pumping station The worker falls from the roof 6.2 m high
Rex September 2010 Fatality Work: replacement of asbestos cement plates by metal plates The worker falls from the roof 17 m high
Rex April 2010 Fatality Work: execution of dismantling of old layer of bituminous roofing The worker fell down from level of + 16.800 to level of +7.000 m
Rex September 2009 Fatality Work: Inspection The worker fell down from the height of 12 m to “0” level
Rex Augustus 2009 Semi-permanent injury Work: Reparation of a hole in a tank The worker fell down inside the fuel oil tank, with 3,10 m of contents (600 cubic meters) falling of a height of 5,9 m.
Rex Augustus 2009 Semi-permanent injury Work: Reparation of the roof The worker fell down from a height of 13 m.
Main causes of accidents Collapsing of the roof Hole existing in the roof AND Without a secured floor Without a safety net below Without an attached lanyard Without fall protection PPE
General rules (1/2) All the roofs are systematically identified and inventoried based on a risk assessment. Nobody is allowed to walk or work on a roof without an authorization. For walking on a roof (visits, inspections,…etc), you have to be trained and the way to follow has to be defined, secured and protected on the basis of an HIRA For working on a roof, you have to follow the procedure defined by an HIRA Each access to a roof has to be closed with a tag describing the interdiction
General rules (2/2) To suppress or manage the risk, you must Use the Hierarchy of Control Elimination Substitution Engineering Administrative Collective Protective Equipment Personal Protective Equipment Each choice has its place and time Before making the choice(s), Evaluate the Problem
Walking/ working on a flat roof • The way of walking/ working on a roof has to be secured; • Firstly, by using collective protection to avoid collapsing of the roof (complete floors resting on beams) and avoid falling due to the hazards coming from the elevated position (guardrails, toe-boards, hand rails, man hole cover).
Walking/ working on a flat roof • The way of walking/ working on a roof has to be secured; • Secondly, if it is not possible, you can use safety nets under the roof (Collapsing) or on the extremity of the roof (Falling from elevated position).
Walking/ working on a flat roof • The way of walking/ working on a roof has to be secured; • Thirdly , If it is not possible, you can use beam lifts or a basket suspended by a crane. In these two cases, you have to wear proper fall protective equipment and in the second case (Basket), you have to define a lift plan.
Walking/ working on a flat roof • The way of walking/ working on a roof has to be secured; • Fourthly , If it is not possible, you have to be secured by proper fall protective equipment (an approved full body harness, shock absorbing lanyard (where the potential to fall is greater than 4 meters) or short restraining lanyards (where the potential to fall is less than 4 meters), self-locking snap hooks (or carabineer type rings) and secure anchorage points). A second way is to use an approved full body harness and an anti-fall system.
Walking/ Working on an inclined roof • The case of inclined roof is not usual in our plants. But for information, each country has its own legislation depending of the inclination,…etc. • Of course, the legislation is done on the basis of the same hierarchy of control that previously. • Globally, • First using scaffolds and nets • Secondly using PPEs
Practical exercice • Define the HIRA and the prevention plan for this case; While execution of dismantling of old layer of bituminous roofing by victim, the partial collapse of ceiling plate happened. As a result the victim, who didn’t fix his safety belt to the lifeline, fell down from level of + 16.800 to level of +7.000 m