The NESS Argon Extinguishing System (NEA) flushes the heater with inert gas (argon) which is clearly lighter than air and so it displaces and extinguishes the fire. The extinguishing system is part of the NESSessities concept which constantly increases safety, availability, durability and efficiency in thermal oil systems.
No problem at all! Like all NESSessities, also the NESS Argon Extinguishing System is designed with practical orientation. Often, the NESS heaters already have integration points, where the integration is easy to make. In some circumstances, the subsequent integration in heaters of other manufacturers can be realized. Certainly, be would be happy to check the respective integration possibility for you.
Probably, the most important thing is the quantity of required argon adapted to the respective heater size that must be made available. For this purpose, beside the heater volume it is also required to calculate the volume of the air- and flue-gas leading parts of the system / channels and to use these as basis for the dimensioning of the system.
Furthermore, in addition to the manual switching on of the argon Extinguishing System, also the integration in the existing safety switch circuits of the heater is needed.
As the name already says, apart from the actual extinguishing of the fire, the source of fire will be cooled additionally by the fine water mist. The extinguishing and cooling system with water mist (NEWN) is part of the NESSessities concept which constantly increases safety, availability, durability and efficiency in thermal oil systems.
A direct water jet to extinguish the fire would be dangerous. It could evaporate instantaneously if it contacts the heat of the thermal oil leakage and cause damage.
Therefore, the NESS extinguishing system counts on a very fine water mist that forms an inert pad on the fire and smothers it. The water mist is sprayed by a special nozzle that is moved into the heater chamber if activated.
No problem at all! Like all NESSessities, also the NESS Extinguishing and Cooling System is designed with practical orientation. It consists of two parts, i.e. the lance unit which moves into the heater and extinguishes the fire and the control unit. The NESS Extinguishing and Cooling System has its own control unit for process control and process monitoring.
Often, the NESS heaters already have integration points, where the integration is easy to make. In some circumstances, the subsequent integration in heaters of other manufacturers can be realized. Certainly, be would be happy to check the respective integration possibility for you.
The size of the extinguishing system depends on the heater volume. There are two different manufactured sizes.
| Small system (NEWM1) | Water flow rate | approx. 1300 l/h |
| Cooling capacity | appr. 800 kW | |
| Steam volume | approx. 2100 m3/h | |
| Large system (NEWM2) | Water flow rate | approx. 4500 l/h |
| Cooling capacity | appr. 2800 kW | |
| Steam volume | approx. 7300 m3/h |
The continuous supply of fire-fighting water must be ensured.
For the control unit observe the following items:
| Compressed air | 6 bar(g), dry and oil-free, quality class 2, ANSI/ISA-7.0.01-1996, 1 connection ¾“ sleeve |
| Water | Pressure of 4-6 bar(g), 10°C-40°C, drinking water quality min. 7 m3/h for large system min. 2,5 m3/h for small system |
The water connection can or shall be connected to two independent water sources (redundant connection).
