Press release, August 23, 2019

Rosenbauer refurbishes the fire protection at Darmstadt's waste incineration plant

  • Automatically triggered turret extinguishing system in the waste bunker
  • Manually operated deluge system in a further 14 fire zones
  • IR monitoring in areas with high fire loads

The Darmstadt waste incineration plant is one of the most modern in Europe. It is constantly being upgraded with the most modern technology, it last underwent a general renovation in 2017, and this year will receive new stationary fire protection systems from Rosenbauer.

Risk focus on waste bunker
The general refurbishment two years ago included, among other things, the refurbishment of the 6,700 cubic meter waste bunker. Due to the varying quality and composition of the delivered waste, it is considered to incorporate the greatest fire load in the entire power plant complex.

The waste bunker in Darmstadt is protected by a highly efficient, fully automatic turret extinguishing system. This essentially consists of an fire fighting water pump with a capacity of 200 m3/h, a foam proportioning system driven by the extinguishing water flow, and three electronically controlled water turrets, fitted with infrared detection systems for early fire detection. Another infrared camera is used to randomly check the temperatures within the waste, which is delivered by the waste disposal vehicles.

Targeted firefighting
The waste bunker is permanently scanned by the three IR cameras that have been installed. If they detect a hotspot, the coordinates are sent to the respective extinguishing turret, and the extinguishing system is activated. The turrets aim at the hotspot, and start a highly accurate extinguishing operation.

Special water turrets/foam monitors with flow rates of up to 5,000 l/min and throw reaches of over 70 m are in use here. The supply of fire fighting water is via an efficient pipeline network from a central water tank, which is fed from the municipal water network. A foam compound is added to the water to increase the extinguishing capacity.

Large-area use of water
All other operations and buildings of the Darmstadt waste incineration plant are protected by a high-performance deluge system. This consists of a water supply, a pump with a capacity of 350 m3/h, a foam proportioning system and hundreds of open deluge nozzles.

A total of 14 extinguishing zones are protected by the deluge system - from the crane chute, through the incinerator feed funnels, to the festoon cables that supply the cranes with electrical power.

Still in operation this year
In addition to the installation of the extinguishing equipment, Rosenbauer is also renovating the electrical installation in the waste bunker in Darmstadt, installing a complete compressed air supply for the IR cameras, and building a completely new extinguishing control system. Construction is to begin in the summer, and acceptance is scheduled for the end of the year. Rosenbauer will then take over maintenance for a period of five years.

Energy for the people
The Darmstadt waste incineration plant burns approximately 200,000 tons of waste per year, and is operated 24/7, 365 days a year by 80 employees. The heat energy released during combustion is used to generate electricity and district heating. Some of the electricity is used to supply the plant itself, while the rest is distributed throughout the region. About 35,000 inhabitants are supplied with electricity (approx. 38 million kWh/a) as well as with district heating (approx. 150,000 tons of steam).

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