Board Falls During Dismantling at 8/F
During dismantling of an 8/F truss-out scaffold at a residential block in Yau Ma Tei, a worker unclips a coupler and a 1.8 m board falls. It lands on a 3/F canopy, bounces onto a resident's air-conditioner, and stops. No one is injured. The worker's lanyard was clipped to the top tube of the scaffold being dismantled; he was leaning over the edge to reach the coupler. The site has no exclusion zone below because the pavement was reopened at lunchtime. The foreman wants to finish dismantling before the end of the shift and says 'no one was hurt, so no need to report'.
1. What immediate actions should be taken after the board falls?
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Dismantling should stop immediately. The area below must be secured and the pavement closed again, because the board has already reached a canopy and a resident's air-conditioner; further loose material could fall. The worker should be removed from the edge and re-anchored to an independent lifeline or safe anchor, not to the scaffold being dismantled. The scaffold should be checked for stability and loose components, and the resident and building management informed. No one should climb onto the canopy to retrieve the board without a safe system.
If anyone had been injured, first aid and emergency services would be the priority and the scene preserved. Even with no injury, the near miss must not be dismissed: a 1.8 m board falling eight floors is a serious dropped-object event.
2. What reporting and investigation is required, and is 'no one was hurt' a reason not to report?
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'No one was hurt' is not a reason to avoid reporting. A falling object that could have killed someone is a near miss and should be recorded and investigated internally, and reported to the contractor and building management. If the incident meets the statutory criteria for a notifiable accident or dangerous occurrence under the Factories and Industrial Undertakings Ordinance and subsidiary regulations, it must be reported to the Labour Department; the contractor should make that determination rather than the foreman.
The investigation should establish why the board fell, why the exclusion zone was removed, why the lanyard was anchored to the scaffold being dismantled, and whether the dismantling sequence and supervision were adequate. Witness statements, photographs and the scaffold records should be kept. Disciplinary or corrective action should follow only after the facts are established.
3. What prevention measures should be applied to dismantling work on this facade?
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An independent lifeline must be installed and checked before dismantling, and it must not be attached to the scaffold being removed. Dismantling should proceed from the top down, with ties and raking members kept in place until the supported section is removed, and no worker should lean over the edge to reach a coupler. The exclusion zone and public protection must remain for the whole dismantling period, not reopened at lunchtime. Tools and boards should be lowered by rope or in containers, not dropped or thrown.
Supervision should be continuous, with a permit-to-work and a briefing on the sequence. Couplers should be checked for condition before use, and the platform should not be overloaded with dismantled material. The near miss should feed back into the method statement and the training of the crew.