High Expansion Foam Covers Tank Truck
The 100-man fire department at the Hanford Atomic Energy Commission plant in Washington State has done a good deal of pioneering in the use of high expansion foam. One of the experiments was covering a tractor-trailer tanker with foam, as shown in the picture.
In the rear of the photo are three 1,250-gallon capacity brush trucks equipped with 5,000 to 6,000-efm high expansion foam generators. In the foreground is a 13,500-cfm foam generator truck. The use of the combined capability of more than 30,000 cfm of foam covered the tanker. The fireman in the center of the foam is standing atop the tanker.
In this experiment, water was supplied to the 13,500-cfm foam truck by one of the 1,250-gallon brush trucks. The tank truck was completely covered with foam in 45 seconds despite a 22 mph wind blowing from left to right as you look at the photo.
Although the Hanford project has no expressways, there are 250 miles of paved roads with no available water, and the traffic includes hazardous chemicals and flammable liquids such as on state highways. We feel that large volumes of high expansion foam have good possibilities for fighting fires involving these materials.
The Hanford atomic plant is operated for the AEC by ITT Federal Support Services, Inc., a subsidiary of the International Telephone and Telegraph Corporation.