CRANE ANTI-COLLISION SYSTEM
Enhances safety on site and contributes to productivity

An anti-collision and zone protection system for tower cranes was introduced by Dragages in 1999 to all its building sites.

The French manufactured SMIE AC30 system manages the interfaces between cranes through radio communication, preventing the risk of collision in crane 'interference' areas, and inhibiting over-flying of sensitive areas such as roads.

It is quick to install with minimal interruption to tower crane operations, and operators need only one hour of training to become familiar with the system. It can be fitted to all crane types and brands.
Dragages Building Works Director Jean-Pierre Lefoul says that the system offers many benefits: "Currently tower crane safety is very much reliant on the crane operators themselves, and their ability to communicate with each other and see clearly at all times what is happening in front, below and behind them. This system removes the risk of human factor error, which greatly enhances safety

"It also contributes to productivity on site by allowing operators to work at maximum safe speed and optimising the use of cranes within a single loading area.

Further information on the SMIE AC30 Crane Anti-Collision and Zone Protection System is available from Dragages Hong Kong Plant Department:
Mr TK Leung
Tel (852) 2471 6303 or email tkleung@bouyguesasia.com

TECHNICAL INFORMATION

Type SMIE AC30

Major benefit
To enhance safety of working environment by:
- Management of interference between tower cranes
- Automatic prevention of collision when cranes over-fly each other
- Automatic prevention of over-flying of sensitive or prohibited areas

Additional benefits
- Optimisation of crane usage eg within a single loading area
- Quick to install
- Simple training for operators
- Cost effective (Cost HK$65,000 per tower crane)
- No negative impact on programme
- Applicable to almost all brands and types of tower crane


Characteristics
- Management capacity is up to 20 cranes on a single site with 5 cranes operating in the same working area Works with pre-set working zone for each tower crane
- Defines restricted zones eg above site office, bridges or roads
- Allows operation at maximum safe speed with smooth stoppage
- Computerised indicator in cabin shows approach of other cranes
- Radio communication can be wired or wireless.

Composition of system
- Central unit with power plug
- Display dashboard located in crane cabin
- Machine interface
- Flashing light Slewing sensor
- High connection box
- High connection low
- Trolley sensor (optional)
- Travelling sensor (optional)

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