DIN EN 15004-2-2008 Fixed firefighting systems - Gas extinguishing systems - Part 2 Physical properties and system design of gas extinguishing systems for FK-5-1-12 extinguishant (.pdf

1、September 2008DEUTSCHE NORM English price group 9No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.220.20!$Qg 1 MPa =

2、 1 N/mm2. 4.2 Use of FK-5-1-12 systems FK-5-1-12 total flooding systems may be used for extinguishing fires of all classes within the limits specified in EN 15004-1:2008, Clause 4. The extinguishant requirements per volume of protected space are given in Table 3 for various levels of concentration.

3、These are based on methods given in EN 15004-1:2008, 7.6. The extinguishing concentrations and design concentrations for heptane and Surface Class A hazards are given in Table 4. DIN EN 15004-2:2008-09 EN 15004-2:2008 (E) 8 Table 3 FK-5-1-12 total flooding quantity FK-5-1-12 mass requirements per un

4、it volume of protected space, m/V (kg/m3) This information refers only to FK-5-1-12, and may not represent any other products containing Dodecafluoromethylpentan-3-one as a component. Temperature T Specific vapour volume S Design concentration (by volume) C m3/kg 3 % 4 % 5 % 6 % 7 % 8 % 9 % 10 % 20

5、0,0609 0,5077 0,6840 0,8640 1,0407 1,2357 1,4275 1,6236 1,8241 15 0,0623 0,4965 0,6690 0,8450 1,0248 1,2084 1,3961 1,5879 1,7839 10 0,0637 0,4859 0,6545 0,8268 1,0027 1,1824 1,3660 1,5537 1,7455 5 0,0650 0,4756 0,6407 0,8094 0,9816 1,1575 1,3372 1,5209 1,7087 0 0,0664 0,4658 0,6275 0,7926 0,9613 1,1

6、336 1,3096 1,4895 1,6734 5 0,0678 0,4564 0,6148 0,7766 0,9418 1,1106 1,2831 1,4593 1,6395 10 0,0691 0,4473 0,6026 0,7612 0,9232 1,0886 1,2576 1,4304 1,6070 15 0,0705 0,4386 0,5909 0,7464 0,9052 1,0674 1,2332 1,4026 1,5757 20 0,0719 0,4302 0,5796 0,7322 0,8879 1,0471 1,2096 1,3758 1,5457 25 0,0733 0,

7、4222 0,5688 0,7184 0,8713 1,0275 1,1870 1,3500 1,5167 30 0,0746 0,4144 0,5583 0,7052 0,8553 1,0086 1,1652 1,3252 1,4888 35 0,0760 0,4069 0,5482 0,6925 0,8399 0,9904 1,1442 1,3013 1,4620 40 0,0774 0,3997 0,5385 0,6802 0,8250 0,9728 1,1239 1,2783 1,4361 45 0,0787 0,3928 0,5291 0,6684 0,8106 0,9559 1,1

8、043 1,2560 1,4111 50 0,0801 0,3860 0,5201 0,6570 0,7967 0,9395 1,0854 1,2345 1,3869 55 0,0815 0,3795 0,5113 0,6459 0,7833 0,9237 1,0671 1,2137 1,3636 60 0,0829 0,3733 0,5029 0,6352 0,7704 0,9084 1,0495 1,1936 1,3410 65 0,0842 0,3672 0,4947 0,6247 0,7578 0,8936 1,0324 1,1742 1,3191 70 0,0856 0,3613 0

9、,4868 0,6148 0,7457 0,8793 1,0158 1,1554 1,2980 75 0,0870 0,3556 0,4791 0,6052 0,7339 0,8654 0,9998 1,1372 1,2775 80 0,0883 0,3501 0,4716 0,5958 0,7225 0,8520 0,9843 1,1195 1,2577 85 0,0897 0,3447 0,4644 0,5866 0,7115 0,8390 0,9692 1,1024 1,2385 90 0,0911 0,3395 0,4574 0,5778 0,7008 0,8263 0,9547 1,

10、0858 1,2198 95 0,0925 0,3345 0,4507 0,5692 0,6904 0,8141 0,9405 1,0697 1,2014 100 0,0938 0,3296 0,4441 0,5609 0,6803 0,8022 0,9267 1,0540 1,1842 m/V is the agent mass requirement (in kilograms per cubic metre); i.e. mass, m, in kilograms of agent required per cubic metre of protected volume V to pro

11、duce the indicated concentration at the temperature specified. V is the net volume of hazard (in cubic metres); i.e. the enclosed volume minus the fixed structures impervious to extinguishant. 100cVmcS=T is the temperature (in degrees Celsius); i.e. the design temperature in the hazard area. S is th

12、e specific volume (in cubic metres per kilogram); the specific volume of superheated FK-5-1-2 vapour at a pressure of 1,013 bar may be approximated by 12Sk kT=+ where k1= 0,0664; k2= 0,000274. c is the concentration (in percent); i.e. the volumetric concentration of FK-5-1-12 in air at the temperatu

13、re indicated, and a pressure of 1,013 bar absolute. DIN EN 15004-2:2008-09 EN 15004-2:2008 (E) 9 Table 4 FK-5-1-12 reference extinguishing and design concentrations Fuel Extinguishment % by volume Minimum design % by volume Class B Heptane (cup burner) Heptane (room test) 4,5 4,4 5,9 Surface Class A

14、 Wood crib PMMA PP ABS 3,4 4,1 4,0 4,0 5,3 Higher Hazard Class A a 5,6 The extinguishment values for the Class B and the Surface Class A fuels are determined by testing in accordance with EN 15004-1:2008, Annexes B and C. The minimum design concentration for the Class B fuel is the higher value of t

15、he heptane cup burner or room test heptane extinguishment concentration multiplied by 1,3. The minimum design concentration for Surface Class A fuel is the highest value of the wood crib, PMMA, PP or ABS extinguishment concentrations multiplied by 1,3. In the absence of any of the 4 extinguishment v

16、alues, the minimum design concentration for Surface Class A shall be that of Higher Hazard Class A. See EN 15004-1:2008, 7.5.1.3, for guidance on Class A fuels. The extinguishing and design concentrations for room-scale test fires are for informational purposes only. Lower and higher extinguishing c

17、oncentrations than those shown for room-scale test fires may be achieved and allowed when validated by test reports from internationally recognized laboratories.aThe minimum design concentration for Higher Hazard Class A fuels shall be the higher of the Surface Class A or 95 % of the Class B minimum

18、 design concentration. 5 Safety of personnel Any hazard to personnel created by the discharge of FK-5-1-12 shall be considered in the design of the system. Potential hazards can arise from the following: a) the extinguishant itself; b) the combustion products of the fire; c) breakdown products of th

19、e extinguishant resulting from exposure to fire. For minimum safety requirements, see EN 15004-1:2008, Clause 5. Toxicological information for FK-5-1-12 is given in Table 5. DIN EN 15004-2:2008-09 EN 15004-2:2008 (E) 10 Table 5 Toxicological information for FK-5-1-12 Property Value % by volume 4 h L

20、C50a 10 No observed adverse effect level (NOAEL) 10 Lowest observed adverse effect level (LOAEL) 10 a4 h LC50is the concentration lethal to 50 % of a rat population during a 4 h exposure. 6 System design 6.1 Fill density The fill density of the container shall not exceed the values given in Tables 6

21、 and 7 for 25 bar and 42 bar systems, respectively. Exceeding the maximum fill density may result in the container becoming “liquid full”, with the effect that an extremely high rise in pressure occurs with small increases in temperature, which could adversely affect the integrity of the container a

22、ssembly. The relationships between pressure and temperature are shown in Figures 1 and 2 for various levels of fill density. Table 6 Storage container characteristics for FK-5-1-12 25 bar Property Unit Value Maximum fill density kg/m31 480 Maximum container working pressure at 50 C bar a b 29 Superp

23、ressurization at 20 C bar a b25 Reference should be made to Figure 1 for further data on pressure/temperature relationships. aGauge. b1 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2. Table 7 Storage container characteristics for FK-5-1-12 42 bar Property Unit Value Maximum fill density kg/m31 440 Maximum c

24、ontainer working pressure at 50 C bar a b 48 Superpressurization at 20 C bar a b42 Reference should be made to Figure 2 for further data on pressure/temperature relationships. aGauge. b1 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2. DIN EN 15004-2:2008-09 EN 15004-2:2008 (E) 11 Values of density in kilogr

25、ams per cubic metre Key X temperature, C Y pressure, bar Figure 1 Temperature/pressure graph for FK-5-1-12 Superpressurized with nitrogen to 25 bar at 20 C Key X temperature, C Y pressure, bar Figure 2 Temperature/pressure graph for FK-5-1-12 Superpressurized with nitrogen to 42 bar at 20 C DIN EN 1

26、5004-2:2008-09 EN 15004-2:2008 (E) 12 6.2 Superpressurization Containers for FK-5-1-12 shall be superpressurized with nitrogen with a moisture content of not more than 60 106% by mass to an equilibrium pressure of (25,1025+) bar and (1,2042+) bar at a temperature of 20 C (see Clause 1 for exception)

27、. 6.3 Extinguishant quantity The quantity of extinguishant shall be the minimum required to achieve the design concentration within the hazard volume at the minimum expected temperature, determined using Table 3 and the method according to EN 15004-1:2008, 7.6. The design concentrations shall be those specified for relevant hazards in Table 4, including a 1,3 safety factor on the extinguishing concentration. Consideration should be given to increasing this for particular hazards, while seeking advice from the relevant authority. DIN EN 15004-2:2008-09