TM 5-852-9/AFR 88-19, Vol. IX
Fire Protection Association standards for fire protection Systems. Special precautions must be taken to
prevent back-siphonage if antifreeze solutions are used in sprinkler systems. If inert-gas systems are installed
in areas occupied by personnel, special precautions must be taken against suffocation. Under special
conditions, dry chemical extinguishers might be practicable. High-expansion foam systems may be used to
conserve water or where obstructions such as airplane surfaces would restrict sprinkler effectiveness.
d. Fire detection and alarm systems. Fire detection and alarm systems can be used effectively for early
detection and control. Although several types of detection devices are available, the most satisfactory devices
in general use are the rate-compensated/fixed-temperature units. These devices should be the type which
automatically reset after temperature is reduced. Products-of-combustion detectors are effective if located
properly and kept clean; however, they are most expensive and are not easily serviced.