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Code of practice for safe use of cranes - Part 3: Mobile cranes

Executive summary

Recommendations for the safe use of mobile cranes.

Abstract

This part of BS 7121 provides recommendations for the safe use of mobile cranes and should be used in conjunction with BS 7121-2, which gives general guidance on inspection, testing and examination of all types of cranes.

Cranes may be fully mobile and able to travel with rated capacity loads suspended (pick and carry), or may be semi-mobile and not permitted to travel with suspended loads.

Semi-mobile cranes include wheeled and crawler-mounted cranes, fitted with stabilizers or outriggers; and cranes that, due to size and weight, are taken to the work site in parts and assembled at the site. This British Standard also covers cranes that are assembled on site to work from a fixed base with outriggers.

Because of their mobility, the cranes covered by this part of BS 7121 can be used for a wide variety of lifting operations in numerous locations.

This part of BS 7121 provides specific guidance on safety when dealing with the hazards caused by mobility and the diversity of locations for mobile crane lifting operations.

Rail-mounted cranes are not covered by this part of BS 7121.

History and related standards

This British Standard includes the following cross-references:

BS 4-1:1993, BS 5306-3:1985, BS 6187:1982, BS 7121-2:1991, BS 7262:1990 and ISO 12482-1:1999.

BS 7121-3:2000 provides recommendations for the safe use of mobile cranes and should be used in conjunction with BS 7121-2, which gives general guidance on inspection, testing and examination of all types of cranes.

Mobile cranes are manufactured in many different forms. Mobility is either by means of road wheels or crawler tracks. Rail-mounted cranes are not covered by this part of BS 7121. Cranes may be fully mobile and able to travel with rated capacity loads suspended (pick and carry), or may be semi-mobile and not permitted to travel with suspended loads. Semi-mobile cranes include wheeled and crawler-mounted cranes, fitted with stabilizers or outriggers; and cranes that, due to size and weight, are taken to the work site in parts and assembled at the site. Cranes that are assembled on site to work from a fixed base with outriggers are also covered by this part of BS 7121.

Because of their mobility, the cranes covered by this part of BS 7121 can be used for a wide variety of lifting operations in numerous locations. BS 7121-1 provides general advice on planning, management, selection of equipment and personnel, etc., for safe lifting with all types of cranes. This part of BS 7121 provides specific guidance on safety when dealing with the hazards caused by mobility and the diversity of locations for mobile crane lifting operations.

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