Experimental study on fire suppression performance of the high pressure water mist in the engine room of an offshore platform

The total flooding application water mist system is a new type of environmentally-friendly fixed extinguishing system. The optimizing design can improve its fire extinguishing performance. At present, the water mist fire extinguishing system in the engine room of the offshore deepwater semi-submersible support platform has not attracted sufficient attention. In this paper, the water mist in the engine room of a deepwater semi-submersible support platform was studied. It contains the effect of water mist on the heat absorption and oxygen insulation of diesel pool fires. The applicable parameters of the water mist fire extinguishing system were also determined. Moreover, based on the shielding of the fire source in the engine room and the different requirements for water mist extinguishing parameters, a hierarchical multi-parameter combined high-pressure water mist fire extin-guishing system was proposed. In the full-scale experimental engine room model, according to the fire extin-guishing experiments for diesel pool fires with different areas, this kind of hierarchical multi-parameter water mist system is very effective on shielded and non-shielded fires. In addition, it is still effective even in a non-closed environment coupled with smoke exhausting.

Automated summary

This paper studied the water mist system in the engine room of a deepwater semi-submersible support platform. The effect of water mist on the heat absorption and oxygen insulation of diesel pool fires was analyzed, and the applicable parameters of the water mist fire extinguishing system were determined. The experimental results showed that the hierarchical multi-parameter combined high-pressure water mist system is effective for both shielded and non-shielded fires.