Traditional Disc (FAST)

Fixed Automated Spray Technology

Fixed Automated Spray Technology

traditionaldisk header

Over several decades, the Boschung Fixed Automated Spray Technology (FAST) has proven its worth as stationary winter maintenance equipment. Many years of experience and ongoing development have resulted in a systematic solution which operates safely and ecologically. The spraying heads are embedded into the pavement surface and the valve units with all the active elements are installed at the side of the pavement. In cost-benefit analyses, the FAST achieves a very high cost-effectiveness factor.


Technical Description

The FAST installation consists of valve units and patented spray disks in the road surface; the spray disks are mounted just below the road surface and are protected against heavy weights and the abrasion caused by snow plows or vehicle tires.

The patented valve unit incorporates the solenoid valves, the control card and an accumulator tank. This tank stores chemical under pressure at the valve location for two purposes: One, to guarantee chemical is available at the disk; and two, to lessen the size of the feed lines and pump requirements which extend the length of the spraying system to more than 1,000 meters with a relatively small pump.

In addition to the pump, the pump station incorporates the control unit and the storage tank for the anti-icing agent.

In the event of an ice hazard, the spraying process can be activated in combination with a Ice Early Warning System (GFS 3000). The various spraying programs and multiple spraying operations allow the system to be perfectly adapted to suit the prevailing conditions.


sprayinstallationSpray Installation

The FAST system components are installed in protected areas off the road surface and are typically unseen by the traveling public. These components are are maintained when paving operations are required, thereby reducing the replacement costs and the overall effort to replace them.

 

 


Pump Station

pumpstation 510

Pump Station

The Pump station consists of a storage tank for the anti-icing agent, a pump and an electronic control unit. The unit is flexibly mounted and can be adapted to suit any local conditions.

pump

Pump

The vertical stainless steel rotary pump pressurizes any liquid anti-icing with a maximum operating pressure of 16 bar.

pressuremonitor

Pressure Monitor

The pressure monitor constantly checks the pressure in the spray circuit. When the system is inactive, it is checked hourly or against programmable cycles.

 

 

controlunit

Control Unit

The FAST control unit monitors and controls the entire system:

  • Solenoid valve controller in the valve units
  • Monitoring the hydraulic circuit (pump control, pressure and flow rate)
  • Monitoring the electrical circuit (short or open circuits)
  • Automatic refilling of the tank
  • Release of spray programs manually, by PC or by GFS 3000 alarms
flowmeter

Flow Meter

The flow meter is used to compare a calculated value with the actual value of the amount of anti-icing used during a spray program. This allows any leaking or defective points in the circuit to be detected and immediate measures taken.

tankmonitoring

Tank Monitoring

The anti-icing fluid tank is fitted with a float and an ultrasound sensor. The float switches the pump off if the level falls below the minimum. The ultrasound sensor displays the current level as a percentage on the computer in the control center. It also provides an alarm if the content of the tank is too low and gives an acoustic and visual alarm when the maximum level is reached during filling.

storagetank

Storage Tank

The size of the storage tank is determined on the basis of the number of spray nozzles and the rate of flow of the anti-icing agent.


Operating Possibilities

operating2Throughout many winters, the FAST system has proven itself in stationary winter service. Years of experience and continuous development have produced a systematic solution which is safe and environmentally friendly.

In cost/use analyses, the FAST system achieves a very high economic viability score.

 

 

 


Building Possibilities

The FAST system can be easily installed in any road and on any bridge.

Roads

Single or two lane road with two-way traffic

roads

Two Lane Highway

Ecological and economical layout. Hard shoulders are not sprayed directly

twolanehighway

Three Lane Highway

Spray disks fitted in the third lane and complete installation in the central part

threelanehighway

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