US FIRE PUMP COMPANY, LLC 27855 James Chapel Road, Holden, LA 70744 TEL: (215) 209-6551 EMERGENCY 24 HOUR RESPONSE: (215) 429-1423 MAILING: PO Box 1810, Albany, LA 70711 FOR MORE INFORMATION VISIT www.SignatureSeriesFoam.com The below case study utilizes the Tenneco tank fire, a 150' (46 meter) diameter tank in gasoline service, which occurred on August 31, 1983. This fire was extinguished in 45 minutes with 3M LIGHT-WATER ATC AR-AFFF at 3% and an application of 0.16 gpm/sq ft. The plunge test as developed jointly by 3M Company and by Dwight P. Williams for a 42-inch diameter tank at an application of 0.06 gpm/sq ft achieved extinguishment in 1 minute and 5 seconds with the 3M LIGHT- WATER ATC AR-AFFF at 3% on 93 octane gasoline. Applying a scale factor of 52 on the plunge test resu

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