Coast Guard Research and Development Center Tests of two explosion suppression systems conducted in the forward pump room (18,000 cu ft) of the T/V RHODE ISLAND are described. The experimental suppression systems were specifically designed for the space and fabricated from existing hardware and detection equipment. They are the first systems to effectively extinguish propane-air explosions in volumes as large as 18,999 cu ft. The effectiveness of water, Halon 2402, Halon 1211, Halon 1301, and Purple K dry chemical powder as suppressing agents was evaluated. The systems were being evaluated to determine their applicability in pump rooms and other high hazard spaces on tank vessels. They could also be used in offshore-well drilling operations in spaces where gas buildup might occur, such as wellheads, storage tanks, and production platforms. The testing demonstrated that technically it is feasible to suppress explosions generated by rapid oxidation of vapor/air mixtures in large volumes. For the various extinguishing agents, the tests indicated that successful suppression requires twice as much water as Halon and approximately 10 times as much Halon as dry chemical (Purple K)by volume. The results of the work will be used as a basis in establishing criteria for evaluating explosion suppression systems that may be submitted to the Coast Guard for approval.

Media Info

  • Features: References;
  • Pagination: p. 429-436

Subject/Index Terms

Filing Info

  • Accession Number: 00138222
  • Record Type: Publication
  • Source Agency: Offshore Technology Conference
  • Report/Paper Numbers: V2, OTC 2561 Proceeding
  • Files: TRIS
  • Created Date: Aug 23 1976 12:00AM