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FeuerTRUTZ-International-2-2016

Planning and Concepts Fig. 3: Comparison of the fire development curves temperature °C tion of the transfer of fire and, depending on the fire protection systems, even more tests (see table 2). Protection objective consideration The use of fire protection systems may be carried out for different reasons: In the first place, the rescuing of persons. The extension of the integrity of structural system parts, the shutting down of systems or the extension of the operational safety of system parts in event of fire can also be an objective target. The different fire scenarios, different critical temperatures and other requirements e.g., on the chemical resistance of the system come on top of that. System selection The premises named above show that the system selection requires a high level time – temperature curves time min of professional knowledge in preventive constructional fire protection and a lot of know-how in the sector of the petrochemical industry. For the technical fire protection properties, there are also further requirements such as the simple installation and maintenance of the systems, easy disassembly for maintenance on the system parts to be protected, environmental compatibility, additional requirements on sound or heat protection as well as cost efficiency. High requirements are placed on the company installing with regard to safety, experience in the industrial area, qualified employees and last but not least, flexibility. Finally, it is sometimes necessary to adapt complete system solutions to the requirements of the respective customer and take new paths as shown in the following example. Table 2: Comparison of different fire scenarios Szenario Pool-Fire Standard Jet-Fire Extended Jet-Fire Standard(s) ISO 834 IMO Res.A.754 (18) EN 1363-2 ISO 22899-1 OTI 95 634 OTI 95 634 Heat flow kW/m² 200 250 350 Leak rate – 0,1 kg/s < m < 2 kg/s m > 2 kg/s tmax 1,100 °C 1,180 °C 1,300 °C Case study for the natural gas storage facility Peckensen At the end of 2014, one began to prepare a technical fire protection solution for the natural gas storage facility in Peckensen, near to Salzwedel, Germany. The protective objective was defined as follows: in event of a fire in the facility, operation must be maintained over a previously defined period. Depending on the system part, this period is 30 or 60 minutes. A Jet-Fire is assumed as fire scenario. Particularly critical parts of the system are the fittings, the flange caps and the connecting pipelines that require to limit the surface temperature to below 250 °C according to the specified time. Moreover, the fittings must be able to be maintained at any time that represents a high demand on the flexibility of the system to be applied and at the same time, significantly limits the systems available. After the design phase and the cost analysis, the operator gave the go-ahead for using the system selected. The first fittings were measured, the precise position of the revision opening determined along with the operator and sample drawing prepared. The great advantage of the system that the operator has made the decision for is the fire protection insulation on the basis of reactive epoxy fire protection coating, as also used to protect steel components, 6 FeuerTRUTZ International 2.2016


FeuerTRUTZ-International-2-2016
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