Download or read book Full Scale Tests of Water Mist Fire Suppression Systems for Navy Shipboard Machinery Spaces Phase 1 Unobstructed Spaces written by and published by . This book was released on 1996 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full scale tests of candidate water mist systems were conducted in a simulated machinery space on the ex-USS Shadwell. There were no obstructions in the space and the fire threats were both pan and spray fires of up to 10 MW. These tests demonstrated the potential ability of water mist to extinguish both shielded and unshielded Class B fires in full scale, relatively uncluttered machinery space applications. Of particular importance from the standpoint of minimization of damage is the rapid reduction in the temperature of the space almost immediately after mist system activation. These tests also demonstrate the differences in firefighting capabilities of the candidate systems tested. While these results are extremely encouraging, modifications to the systems will be needed to shorten the extinguishment times and minimize potential fire damage. These modifications will be included in the Phase II tests.
Download or read book Full Scale Test of Water Mist Fire Suppression Systems for Navy Shipboard Machinery Spaces written by G. G. Back and published by . This book was released on 1996 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full scale tests of candidate water mist systems were conducted in a simulated machinery space on the ex-USS Shadwell. There were no obstructions in the space and the fire threats were both pan and spray fires of up to 10 MW. These tests demonstrated the potential ability of water mist to extinguish both shielded and unshielded Class B fires in full scale, relatively uncluttered machinery space applications. Of particular importance from the standpoint of minimization of damage is the rapid reduction in the temperature of the space almost immediately after mist system activations. These tests also demonstrate the differences infirefighting capabilities of the candidate systems tested. While these results are extremely ecouraging, modifications to the systems will be needed to shorten the extinguishment lines and minimize potential fire damage. These modifications will be included in the Phase II tests.
Download or read book Full Scale Tests of Water Mist Fire Suppression Systems for Navy Shipboard Machinery Spaces Part 2 Obstructed Spaces written by and published by . This book was released on 1996 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Phase II tests were conducted in a simulated machinery space on the Navy's fire test ship, the ex-USS Shadwell. It was the same space as used in the Phase I tests except that it was fitted with mockups of equipment to farther evaluate the firefighting capabilities of the water mist system in a more realistic machinery space environment. The fire threats were a combination of spray and pan fires in the range of 2.5 to 7.5 MW. Five different types of spray nozzles were evaluated. Initially, the nozzles were installed in the overhead at one level as in the Phase I study. Then, to improve the performance of the system, the nozzles were installed on two levels as is the practice with Halon systems. With the best system, all of the fires were extinguished in less than 25 seconds, using less than lOO% (25 gallons) of water.
Download or read book Fire Suppression Substitutes and Alternatives to Halon for U S Navy Applications written by National Research Council and published by National Academies Press. This book was released on 1997-05-28 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Joint Meeting of the U S Sections of the Combustion Institute Western States Central States Eastern States written by and published by . This book was released on 1999 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Full scale Testing of Water Mist Fire Suppression Systems in Machinery Spaces written by and published by . This book was released on 1998 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Full Scale Testing of Water Mist Fire Suppression Systems for Small Machinery Spaces and Spaces With Combustible Boundaries Volume 1 written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides an evaluation of the firefighting capabilities of the state-of-the-air water mist fire suppression systems in smaller (approx. 100 cu m) machinery space applications. The primary objective of this investigation was to evaluate the applicability of the International Maritime Organization's (IMO) test protocol and design requirements to smaller machinery spaces and to machinery spaces with combustible boundaries. The following water mist systems were included in this evaluation: Chemetron CFs, Fike Micromist, Grinnell AquaMist, Fogtec Fire Protection Systems, and the U.S. Navy's water mist system. The five water mist systems were each capable of extinguishing a majority (at least nine out of fifteen) of the test fires included in this evaluation. Variations in system capabilities were observed primarily during the tests conducted with forced ventilation. Machinery spaces with combustible boundaries were shown not to pose a significant challenge to the water mist systems. The results of these tests suggest that the current IMO design requirements can be reduced for smaller machinery spaces. The amount of reduction needs to be determined on a case-by-case basis. An approach for defining the protection requirements (i.e., duration of protection) for these smaller machinery spaces is also described in this report. The report and Appendix A (Instrumentation and Camera Details) are contained in Volume I. Volume II consists of Appendix B (Test Data) and Appendix C (Combustible Boundary Test Data). Appendices B and C are available in paper copy only from the Research and Development Center.
Download or read book Full Scale Testing of Water Mist Fire Suppression Systems for Small Machinery Spaces and Spaces With Combustible Boundaries written by and published by . This book was released on 1999 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides an evaluation of the firefighting capabilities of the state-of-the-air water mist fire suppression systems in smaller (approx. 100 cu m) machinery space applications. The primary objective of this investigation was to evaluate the applicability of the International Maritime Organization's (IMO) test protocol and design requirements to smaller machinery spaces and to machinery spaces with combustible boundaries. The following water mist systems were included in this evaluation: Chemetron CFs, Fike Micromist, Grinnell AquaMist, Fogtec Fire Protection Systems, and the U.S. Navy's water mist system. The five water mist systems were each capable of extinguishing a majority (at least nine out of fifteen) of the test fires included in this evaluation. Variations in system capabilities were observed primarily during the tests conducted with forced ventilation. Machinery spaces with combustible boundaries were shown not to pose a significant challenge to the water mist systems. The results of these tests suggest that the current IMO design requirements can be reduced for smaller machinery spaces. The amount of reduction needs to be determined on a case-by-case basis. An approach for defining the protection requirements (i.e., duration of protection) for these smaller machinery spaces is also described in this report. The report and Appendix A (Instrumentation and Camera Details) are contained in Volume I. Volume II consists of Appendix B (Test Data) and Appendix C (Combustible Boundary Test Data). Appendices B and C are available in paper copy only from the Research and Development Center.
Download or read book Full Scale Testing of Water Mist Fire Suppression Systems for Small Machinery Spaces and Spaces with Combustible Boundaries written by and published by . This book was released on 1999 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides an evaluation of the firefighting capabilities of the state-of-the-air water mist fire suppression systems in smaller (approx. 100 cu m) machinery space applications. The primary objective of this investigation was to evaluate the applicability of the International Maritime Organization's (IMO) test protocol and design requirements to smaller machinery spaces and to machinery spaces with combustible boundaries. The following water mist systems were included in this evaluation: Chemetron CFs, Fike Micromist, Grinnell AquaMist, Fogtec Fire Protection Systems, and the U.S. Navy's water mist system. The five water mist systems were each capable of extinguishing a majority (at least nine out of fifteen) of the test fires included in this evaluation. Variations in system capabilities were observed primarily during the tests conducted with forced ventilation. Machinery spaces with combustible boundaries were shown not to pose a significant challenge to the water mist systems. The results of these tests suggest that the current IMO design requirements can be reduced for smaller machinery spaces. The amount of reduction needs to be determined on a case-by-case basis. An approach for defining the protection requirements (i.e., duration of protection) for these smaller machinery spaces is also described in this report. The report and Appendix A (Instrumentation and Camera Details) are contained in Volume I. Volume II consists of Appendix B (Test Data) and Appendix C (Combustible Boundary Test Data). Appendices B and C are available in paper copy only from the Research and Development Center.
Download or read book Full scale Testing of Water Mist Fire Suppression Systems for Small Machinery Spaces and Spaces with Combustible Boundaries written by Gerard G. Back and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical and Physical Processes in Combustion written by Combustion Institute (U.S.). Eastern States Section. Fall Technical Meeting and published by . This book was released on 1997 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996-09 with total page 1244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Water Spray Protection of Machinery Spaces written by and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides an evaluation of the firefighting capabilities of fixed pressure water spray systems for machinery spaces as described in Regulation 10 of Safety of Life at Sea (SOLAS). The objective of this evaluation was to determine if a system meeting the minimum SOLAS requirement can provide adequate protection of shipboard machinery spaces. To meet this objective, the capabilities and limitations of twelve water spray systems were determined using the International Maritime Organization (IMO) test protocol for water mist systems (MSC 668 and 728) as the basis for this analysis. The tests were conducted in a simulated 500 m to the third power machinery space onboard the U.S. Coast Guard's test vessel STATE OF MAINE. Generally speaking, the trends in performance of water spmy systems were similar to those observed for water mist systems. All systems were capable of extinguishing larger fires (4 kW/m3 and greater) with variations in system capabilities becoming apparent as the fire size was reduced (2 kW/m3 and below). Only about half of the systems were capable of extinguishing the 1.0 MW obstructed spray fire located on the side of the engine mockup (similar to IMO-6). Water mist systems typically exhibit slightly better capabilities primarily against the smaller fires. It was concluded that the capabilities of these systems cannot be associated with a single parameter such as application rate and must be determined empirically. As a result, the approval of these systems needs to be performance based as with all other fire suppression systems required by SOLAS. It was recommended that SOLAS Regulation 10 be re-written to cover all water based machinery space systems with the caveat that they pass a modified IMO test protocol based on the one currently used for approving water mist systems MSC 668 and 7281.
Download or read book Water Mist Protection Requirements for Very Large Machinery Spaces written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides an evaluation of the fire fighting capabilities of water mist fire suppression systems in large (3000 m(exp 3) machinery spaces. The primary objective of this investigation was to evaluate the applicability of the International Maritime Organization test protocol to larger, Class 3 machinery spaces (>3000 m(exp 3). Four generic water mist systems produced using off-the-shelf industrial spray nozzles were included in this evaluation. The capabilities of both total protection and zoned total protection systems were identified during this investigation. The zoned systems demonstrated the same extinguishment capabilities as the total protection systems. The systems were evaluated against a series of heptanes spray and pan fires ranging in size from 2.5 - 10.0 MW. The fires were located under a 1.0 m horizontal obstruction plate adjacent to a bullhead similar to the fires conducted in MSC Circular 668. The capabilities observed for the water mist systems (both zoned and total flooding) in the 3000 m(exp 3) machinery space followed the same trends found throughout literature on water mist. The steady-state extinguishment model developed during previous phases with this investigation showed reasonably good agreement with the results of these tests. The strengths and weal messes of the IMO test protocol were also identified. The conservative nature of the protocol (due to the high ventilation rates and smaller fire sizes (i.e., 1.0 MW)) will limit the use of water mist in larger machinery spaces. Based on this analysis, it was concluded that it is highly unlikely that any system discharging only water will ever successfully complete the protocol for volumes greater than 2000 m(exp 3).
Download or read book Water Mist Machinery Space Fire Doctrine written by and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: While the Halon 1301 fire suppression systems installed in machinery spaces are very effective, environmental regulations have essentially prohibited the use of these systems for future ships. A high-pressure water mist system was developed as an environmentally friendly alternative for conventional Halon 1301 systems. Outlined in NSTM Chapter 555, Section 10 are procedures for dealing with an out-of-control class B fire in a machinery space protected with Halon 1301. Some of these procedures are unnecessary when water mist is used, since water mist can discharge for an extended period of time and offer continuous protection, the need to wait 15 minutes before entering the space is eliminated, and the affected space ventilation can be used during attack team entry. Also, due to the high thermal capacity of water, the potential exposure to hazardous post- fire conditions and the likelihood of fire spread are significantly reduced.
Download or read book Water Mist for Ship Machinery Spaces written by and published by . This book was released on 2006 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fires in naval vessels may lead to a loss of capability, function, life and in extreme situations, the loss of the vessel. Machinery space fires are a particular concern because of the availability of fuel and ignition sources. Suppressant systems employed in the machinery spaces of RAN vessels must have the cpability to extinguish fires that result from ignition of these fuels. The fuel properties that affect extinguishing behaviour are examined in this paper and the suitability of water mist as the extinguishant of choice for these fuels examined. Extinguishing tests have shown that water mist systems are capable of extinguishing Class B fires and were successful in extinguishing fires of fuels with flash points from 60 deg C (diesel) to -4 deg C (heptane). Water mist is also able to thermally manage compartment termperatures improving habitability and reducing the risk of fire spread.
Download or read book Full scale Water Mist Design Parameters Testing written by G. G. Black and published by . This book was released on 1999 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this evaluation was to further develop an understanding of the capabilities and limitations of water mist systems as applied to machinery space applications. The primary objective of this investigation was to evaluate the applicability of a local application test method being considered by the International Maritime Organization (IMO). An evaluation of the effects of mist spray obstructions on extinguishment capabilities was performed. The effects of compartment parameters (size and vent area), mist system parameters (system flow rate), and fire parameters (heat release rate, fire type, location, and degree of obstruction) were evaluated to aid in validating a scalability model. This model can be used to scale test results to other sized compartments. Local application water mist systems are capable of extinguishing spray and pan fires if they produce sufficient mist concentrations uniformly around the protected object. They do have limited capabilities against obstructed fires. The size of the obstruction and separation distance between the obstruction and the fire were identified as primary variables. A steady state model was validated that predicts compartment temperatures, oxygen concentrations, and critical fire sizes.
