- Author
- Peterson, H. B. | Gipe, R. L.
- Title
- Flush-Deck Nozzles (Navy Type S) for Fire Suppression. Part 1. Discharge Pattern Studies.
- Coporate
- Naval Research Laboratory, Washington, DC
- Sponsor
- Naval Ship Systems Command, Washington, DC
- Report
- NRL Memorandum Report 2322, August 1971, 24 p.
- Keywords
- aircraft carriers | nozzles | fire suppression | sprays | discharge rate | ships
- Identifiers
- role of the liquids; resultant patterns; center plug installation on shipboard
- Abstract
- Previous large-scale fire tests have shown that the spray discharge from the Type S flush-deck nozzles, as originally installed on aircraft carriers for nuclear-biological-chemical wash-down purposes, was not efficient for fire suppression in the presence of high wind. The resultant spray patterns of the basic nozzle and six experimental configurations have been analyzed for their maximum reach, evenness of distribution of falling spray, and height of spray trajectory. The maximum height of the spray could be held to 12-24 inches above the deck but this limited the horizontal reach to 17 feet. The best point of compromise between low height and horizontal reach can be established only after further fire and fire-with-wind tests. The liquid being discharged through the nozzle plays an important role in determining the final pattern. An Aqueous Film Forming Foam solution may give only half the area of coverage was water through the same device.