DEVELOPMENT OF A HYDRAZINE GAS-GENERATION SYSTEM FOR THE LARGE OBJECT SALVAGE SYSTEM (LOSS)

The report describes the development and testing of a self-contained hydrazine-fueled, underwater gas-generation system designed to provide large volumes of noncondensable gas for a salvage buoyancy application. This system is capable of generating sufficient gas to displace 200 L tons of seawater at a depth of 850 feet. The catalytic decomposition of monopropellant hydrazine is used to produce hydrogen and nitrogen gases which serve as the buoyancy media. The hydrazine gas generation system was mated with the LOSS(Large Object Slavage System) pontoon and successfully tested in a shallow water demonstration of the integral lift system. In this demonstration, a 74 L ton object was salvaged from a depth of 90 feet. The success of this in situ test demonstrated the suitability and practicality of using monopropellant hydrazine to produce large volumes of buoyancy gas. (Modified author abstract)

• Corporate Authors:

  Naval Civil Engineering Laboratory

  Port Hueneme, CA  United States 
• Authors:
  • Tate, K W
• Publication Date: 1973-12

Media Info

• Pagination: 55 p.

Subject/Index Terms

• TRT Terms: Buoyancy; Coal gasification; Marine salvage; Salvage
• Old TRIS Terms: Buoyant materials; Gas generating systems
• Subject Areas: Environment; Marine Transportation;

Filing Info

• Accession Number: 00056738
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NCEL-TR-800 Tech Rpt
• Files: TRIS
• Created Date: Jul 22 1974 12:00AM