5. Interfering cranes (or secant cranes)
Interference zones have evolved over the last twenty years. The first regulation was a circular issued by the Direction Générale du Travail on July 9, 1987, followed by a technical note dated March 6, 1991 concerning special safety measures for tower installations with interfering zones. As the level of safety of these devices improved, an informative annex dealing with them was adopted in the harmonized type C standard "tower cranes" ( NF EN 14439+A2 ).
When there is a risk of interference between cranes or overflight of dangerous areas on the site, safety devices are required. These may be "anti-collision devices" or "working space limiters". Both systems are referred to as "risk zone management devices".
The employer is responsible for implementing these rules of...
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Interfering cranes (or secant cranes)
Tower crane stabilization
Bibliography
- Guide technique du 18 novembre 2014 relatif aux opérations de modification des machines en service, - https://travail-emploi.gouv.fr/publications/picts/bo/20141130/TRE_20140011_0110 _0001.pdf (2014)....
Standards and norms
- Overhead load hoists – Security – Tower cranes - NF EN 14439+A2 - Juillet 2009
- Overhead load hoists – Steel cables – Care and maintenance, inspection and removal - NF ISO 4309 - Janvier 2018
- Machine safety – Safety-related parts of control systems – Part 1: General design principles [cancelled 1er September 2012] - NF EN 954-1 - Février 1997
- Machine safety – Safety-related parts of control systems...
Regulations
Directive 2006/42/EC of the European Parliament and of the Council of May 17, 2006 on machinery, amending Directive 95//EC (Machinery Directive).
Directive of the European Parliament and of the Council No. 98/37/EEC of June 22, 1998 on the approximation of the laws of the Member States relating to machinery (replaced by Directive 2006/42/SC of December 29, 2009).
Arrêté du...
Directory
OPPBTP (Professional organization for building and public works)
FFB (French Building Federation)
FNTP (National Federation of Public Works)
Software
Calculation tool for determining the out-of-service wind applied to a crane (INRS)
https://www.inrs.fr/dms/inrs/CatalogueOutil/TI-outil54/outil-calcul-vent-outil54.zip
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