摘要: Aqueous film forming foam (AFFF) concentrates were tested on the after tank deck of the Tank Vessel A.E. WATTS. It simulated a spill fire using marine diesel as the test fuel. The purpose of the testing was to evaluate the firefig... 展开 Aqueous film forming foam (AFFF) concentrates were tested on the after tank deck of the Tank Vessel A.E. WATTS. It simulated a spill fire using marine diesel as the test fuel. The purpose of the testing was to evaluate the firefighting effectiveness of different AFFF concentrates and to determine whether 1% or 3% AFFF concentrates could be used to replace the 6% Military Specification AFFF concentrate used on board Coast Guard cutters. This replacement could reduce the weight and space required for AFFF storage or increase the overall time of firefighting effectiveness. The AFFF's tested were 3% and 6% AFFF concentrates meeting Military Specification MIL-F-24385, two commercial 3% AFFF concentrates, two polar solvent resistant 3% AFFF concentrates, and a 1% commercial AFFF concentrate. A secondary objective was to evaluate the firefighting effectiveness of the four nozzles used aboard Coast Guard cutters when using AFFF. The tests demonstrated that the 3% AFFF concentrates were as effective the 6% Military Specification AFFF concentrate in controlling and extinguishing deck fires, as well as in sealing around hot metal surfaces and in burnback resistance. The 1% AFFF concentrate had control and extiguishment times comparable to those of the 6% AFFF Military Specification concentrate, but it was the least acceptable AFFF because of its poor burnback resistance. The Coast Guard All Purpose (CGAP) nozzle and the Twin Agent Unit (TAU) nozzle had the longest control and extinguishment times while the Mechanical Foam Nozzle (MFN) and the Select-O-Flow (SFL) nozzle had the shortest control and extinguishment times. 收起