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Abstract

Fire growth and Required Delivered Density measurements were obtained for a vinyl-cov ered reclining chair as part of a program to evaluate the Actual Delivered Density (ADD)/Required Delivered Density (RDD) approach to suppression prediction for quick response sprinklers in a light hazard scenario. In two tests, chemical and convective heat release rates of the burning chair were obtained from a fire products collector, while the radiative heat release rate was measured using a heat flux gauge.

The average maximum chemical heat release rate was 1.5 MW (85,000 Btu/min) with the convective fraction being 56%. The average growth time of the fire, assuming a second power growth curve (t2), was 100 s. The RDD of the chair was determined by measuring the effect of water application on the convective heat release rate of the chair. Nominal application densities of 2.4, 3.7, 6.1 and 8.6 mm/min (0.06, 0.09, 0.15, and 0.21 gpm/ft²) were applied over a convective heat release rate range of 100 to 450 kW (5700 to 25,600 Btu/min). The RDD over the range was observed to be between 3.7 and 6.1 mm/min (0.09 and 0.15 gpm/ft²). Due to variations in fire spread and shielding, the RDD did not vary systematically with heat release rate.

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References

Kung, H-C. , Spaulding, R.D. , and Hill, E.E., Jr. , "Sprinkler Performance in Residential Fire Tests," FMRC Technical Report Serial No. 22574 RC80-T16, July 1980.

Kung, H-C. , Spaulding, R.D. , Hill, E.E., Jr. , and Symonds, A.P. , "Field Evaluation of Residential Prototype Sprinkler, Los Angeles Test Program," FMRC Technical Report OEOR3.RA(1), September 1981 .

Kung, H-C., Spaulding, R.D., and Hill, E.E., Jr., "Sprinkler Performance in Living Room Fire Tests: Effect of Link Sensitivity and Room Size," FMRC Technical Report OFON5.RA, July 1983.

Yao, C. , "Development of the ESFR Sprinkler System," Fire Safety J., 14, 1988, pp. 65-73.

Kung, H-C. , Spaulding, R.D. , and Yu, H-Z., "Response of Sprinkler Links to Rack Storage Fires," FMRC Technical Report J.I. OG2E7.RA(2), Factory Mutual Research Corporation, Norwood, MA, November 1984.

Heskestad, G. and Smith, H. , "Investigation of a New Sprinkler Sensitivity Approval Test: The Plunge Test," FMRC 22485, Factory Mutual Research Corporation, Norwood, MA, December 1976.

Lee, J.L. , "Extinguishment of Rack Storage Fires of Corrugated Cartons Using Water ," Proceedings of the First International Symposium on Fire Safety Science, p. 1177, Hemisphere Publishing Corp., New York, 1986.

Vincent, B.G. , Stavrianidis, P. , and Kung, H-C. , "Large Scale Fire Testing of Fast Response Sprinklers and Conventional Response Sprinklers in a Fire Control Mode Scenario ," Technical Report J.I. OQ2P6.RA, Factory Mutual Research Corporation, Norwood, MA, June 1989 .

Vincent, B.G. , Stavrianidis, P. , and Kung, H-C. , "Use of Quick Response Standard Sprinklers For Industrial Fire Protection Applications," J. Fire Protection Engineering, 2, pp. 99-110, 1990.

10.

Carey, W.M. , "Report of the Quick Response Sprinkler Project Group 2 Performance Tests Phase I-RDD Tests," Underwriters Laboratories, May 1988.

11.

Carey, W.M. , "Summary Tables for the NFPRF Group 2 ADD Tests," Underwriters Laboratories, April 1988.

12.

Bill, R.G., Jr. , Kung, H-C. , Vincent, B.G. , Brown, W.R. , and Hill, E.E., Jr. , "Predicting the Suppression Capability of Quick Response Sprinklers in a Light Hazard Scenario, Part 2: Actual Delivered Density, (ADD) Measurements and Full-Scale Fire Tests," J. Fire Protection Engineering, 3, pp. 95-107, 1991.

13.

Bill, R.G., Jr. , Kung, H-C. , Brown, W.R. , Hill, E.E., Jr. , Spaulding , R.D. , Stavrianidis, P. , Vincent, B.G. , and Yu , H-Z. , "Evaluation of the Suppression Capability of Residential and Quick Response Sprinklers," Technical Report, J.I.OQ5N0-8.RA, Factory Mutual Research Corporation , Norwood, MA, December 1990.

14.

Heskestad, G. , "A Fire Products Collector for Calorimetry in the MW Range," FMRC Technical Report, J.I.OC2EI.RA, Factory Mutual Research Corporation, Norwood, MA, June 1981.

15.

Tewarson A. , "Experimental Evaluation of Flammability Parameters of Polymeric Materials ," in Flame-Retardant Polymeric Materials, ( Lewin, M. , Atlas, S.M. , and Pearce, E. , ed).) Plenum Press, New York, 1982, pp. 97-153.

16.

Standard on Automatic Fire Detectors NFPA 72E, National Fire Protection Association, Quincy, MA, 1987, Appendix C-2-2.22 to C-2-2.4.

17.

Heskestad, G. and Bill, R.G. , Jr., "Quantification of Thermal Responsiveness of Automatic Sprinklers Including Conduction Effects," Fire Safety J., 14, 1988, pp. 113-125.