RR820 - Tower crane incidents worldwide - HSE

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1 INTRODUCTION Since 2000 there have been five major incidents on UK construction sites that involved the collapse of a tower crane. These five being Canary Wharf in 2000, Worthing in 2005, Battersea in 2006, Liverpool in 2007, Croydon in 2007 and Liverpool in 2009. Subsequent investigation into these incidents by HSE, assisted by HSL, showed that these collapses were due to different causes. HSL were requested by Mr Ian Simpson, HSE Principal Inspector having portfolio for lifting equipment and lifting operations, to identify tower crane incidents that had taken place around the world between 1989 to 2009 and obtain, where possible, the causes of each incident and the tower crane involved. The intention underlying the research is to use the information obtained to assist in advising and guiding the UK tower crane industry to help improve safety. 1
2 CRANE TYPES The type of cranes considered in the research was confined to tower cranes commonly found on UK construction sites, i.e. conventional top slew tower cranes including saddle jib, flat top and luffing tower cranes. A conventional top slew tower crane consists of a central mast or tower section mounted on a foundation, usually at ground level. The main features of the top part of the crane consist of a horizontal counterjib, horizontal main jib, cab (where fitted), counterweights and ‘A’ frame or slew turret. These are attached to the top of the mast section via a slewing ring that permits the top of the crane to rotate through 360º. The hook of this type of crane is positioned by travelling the hook along the main jib and by rotating the top of the crane via the slewing ring. A luffing tower crane also consists of a central mast or tower section mounted on a foundation, usually at ground level. The main features of the top part of the crane consist of a horizontal counterjib, main jib, cab (where fitted), counterweights and the ‘A’ frame or tower head. The main jib is attached to the ‘A’ frame or counterjib using pivot points. The top of the crane is attached to the top of the mast section via a slewing ring that permits the top of the crane to rotate through 360º. The hook of this type of crane is suspended from the outer end of the jib and is positioned by raising and lowering the jib and by rotating the top of the crane via the slewing ring. Only major incidents resulting in the collapse of the crane or a substantial part of its structure (e.g. the jib) have been considered in the research. Other incidents e.g. dropped loads, falls from height, trapping and crushing, fires, slips and trips and electrocutions etc have not been considered. Not included in the research were incidents involving the following: • Mobile Cranes • Self Erecting Tower Cranes • Tracked Crawler Cranes • Dockyard Cranes (e.g. Gantry and Container Cranes) 2
Page 1 and 2: Health and Safety Executive Tower c
Page 3 and 4: © Crown copyright 2010 First publi
Page 6: Objectives EXECUTIVE SUMMARY Since
Page 11 and 12: casualties etc. Technical details,
Page 13 and 14: This incident has been categorised
Page 15 and 16: 4.6 2003 INCIDENTS 4.6.1 Singapore
Page 17 and 18: 4.8.3 Worthing, Sussex, England A B
Page 19 and 20: 4.9.2 Uitenhage, South Africa A tow
Page 21 and 22: 4.10.3 Utrecht, Holland “Hurrican
Page 23 and 24: 4.10.15 Prague, Czechoslovakia A to
Page 25 and 26: 4.11.7 New York, U.S.A. On 30 May 2
Page 27 and 28: 4.12 2009 INCIDENTS 4.12.1 Nelsprui
Page 29 and 30: 4.12.13 Toronto, Canada A Pecco sad
Page 31 and 32: 5.1 5 ANALYSIS OF IDENTIFIED INCIDE
Page 33 and 34: • Misuse - 6 Incidents (10%) •
Page 35 and 36: equired to properly control a crane
Page 37 and 38: Table 2 - No of Incidents a particu
Page 39 and 40: 7 FIGURES Figure 1 - Crane involved
Page 41 and 42: Figure 5 - Crane involved at Cuijk,
Page 43 and 44: Figures 8a and 8b - Crane involved
Page 45 and 46: Figures 12a and 12b - Crane involve
Page 47 and 48: Figure 15b - Crane involved at Seat
Page 49 and 50: Figures 18a, 18b and 18c - Crane in
Page 51 and 52: Figures 20a and 20b - Crane involve
Page 53 and 54: Figures 23a, 23b and 23c - Crane in
Page 55 and 56: Figure 25b - Crane involved at Zibo
Page 57 and 58:
Figure 29 - Crane involved in Schen
Page 61 and 62:
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RR820 - Tower crane incidents worldwide - HSE

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