Full Scale Tests of Water Mist Fire Suppression Systems for Navy Shipboard Machinery Spaces. Part 2. Obstructed Spaces.

Back, G. G.; DiNenno, P. J.; Leonard, J. T.; Darwin, R. L.

doi:10.21236/ada306668

Cited by 28 publications

(38 citation statements)

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“…Since 1990, a number of manufacturers and research organizations [9,11,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] have been involved in developing water mist technology for the protection of machinery compartments. The Fire Protection Subcommittee of the International Maritime Organization (IMO), has developed a fire test protocol [9] for water mist systems that are intended to replace sprinkler systems in marine machinery compartments.…”

Section: Water Mist For the Protection Of Machinery Spacesmentioning

confidence: 99%

“…Test results [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] showed that water mist fire suppression systems were able to extinguish a wide variety of exposed and shielded hydrocarbon pool, spray and cascading fires, as well as combined Class A and B fires representative of those that might occur in a machinery space. Compared to gaseous agents, the extinguishing time using water mist was long.…”

Section: Water Mist For the Protection Of Machinery Spacesmentioning

confidence: 99%

“…The full-scale tests carried out by Back et al in a 960 m 3 space [18] showed that the extinguishing performance of the water mist system was improved by installing the nozzles at two elevations in the compartment. In this configuration, the water mist system was capable of extinguishing all of the unventilated fires in less than 25 s using less than 100 L of water.…”

Section: Water Mist For the Protection Of Machinery Spacesmentioning

confidence: 99%

“…Compared to low pressure single-fluid and twin-fluid systems, high pressure single-fluid water mist systems exhibited better fire extinguishing capabilities against most fire challenges, because a large amount of small and high momentum droplets were produced [17,18,[26][27][28][29][30]. However, the low pressure water mist systems with higher water flow rates and larger droplet sizes demonstrated good performance in extinguishing unshielded pool fires and wood crib fires [17,18,29].…”

Section: Water Mist For the Protection Of Machinery Spacesmentioning

confidence: 99%

See 3 more Smart Citations

A Review of Water Mist Fire Suppression Technology: Part II-Application Studies

Liu¹,

Kim

2001

Journal of Fire Protection Engineering

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Section: Water Mist For the Protection Of Machinery Spacesmentioning

confidence: 99%

Section: Water Mist For the Protection Of Machinery Spacesmentioning

confidence: 99%

Section: Water Mist For the Protection Of Machinery Spacesmentioning

confidence: 99%

Section: Water Mist For the Protection Of Machinery Spacesmentioning

confidence: 99%

See 2 more Smart Citations

A Review of Water Mist Fire Suppression Technology: Part II-Application Studies

Liu¹,

Kim

2001

Journal of Fire Protection Engineering

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“…The Navy's recognition of the benefits of water for fire suppression has led to the implementation of mist systems aboard ships [1][2][3]. There are modeling data that show the ability of mist to reduce overpressure and therefore limit shipboard damage caused by an explosion from a combat or terrorist attack [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Blast Mitigation Using Water Mist: Test Series II

Willauer¹,

Ananth²,

Farley³

et al. 2009

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Standard Form 298 (Rev. 8-98)Prescribed by ANSI Std. Z39.18Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. The effects water mist has on the overpressures produced by the detonation of 50 lb equivalent of high explosives (HE) TNT, Destex, and PBXN-109 in a chamber is reported. The overpressures for each charge density were measured with and without mist preemptively sprayed into the space. The impulse, initial blast wave, and quasi-static overpressure measured in the blast mitigation experiments were reduced by as much as (40%, 36%, and 35%) for 50 lbs TNT, (43%, 25%, and 33%) for 50 lbs TNT equivalent Destex, and (49%, 39%, and 41%) for 50 lbs TNT equivalent PBXN-109 when water mist was sprayed 60 seconds prior to detonation at a concentration of 70 g/m 3 and droplet Sauter Mean Diameter (SMD) of 54 mm. These results suggest that current water mist technology is a potentially promising concept for the mitigation of overpressure effects produced from the detonation of high explosives. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) SPONSOR / MONITOR'S ACRONYM(S) 9. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) SPONSOR / MONITOR'S REPORT NUMBER(S)

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Pool fire suppression performance by twin‐fluid water mist under low pressures in an altitude chamber

Wan

Shao

et al. 2020

Process Safety Progress

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Fire suppression tests using low pressure twin‐fluid water mist under low pressure environments were carried out to exam the performance of water mist systems at low pressure environments. The experiment results show that the suppression time gets shorter for lower chamber pressure, and relevant total weight of water and nitrogen used decreases as the chamber pressure gets lower. For the case of 30‐cm diameter pool fire, the suppression times are 20.19, 7.5, and 2.24 under the chamber pressure of 60, 38, and 24 kPa, respectively. In case of a cargo compartments fire, it is suggested to open the ventilation valve of the cargo compartment at a high cruising altitude to relieve pressure, so as to achieve rapid fire suppression. When a fire happens at the position off the center below the water mist nozzle, the water mist suppression effects will be weakened. The fire size has little effects on the fire extinguishing process under pressure of 24 kPa. Under the critical atomization condition with the pressure differential between the inlet and outlet of the nozzle for water as 0.05 MPa (5.04 L/min), and the pressure differential for nitrogen as 0.10 MPa (10.97 L/min), the suppression time is the shortest as 18.66 seconds.

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Full Scale Tests of Water Mist Fire Suppression Systems for Navy Shipboard Machinery Spaces. Part 2. Obstructed Spaces.

Cited by 28 publications

References 0 publications

A Review of Water Mist Fire Suppression Technology: Part II-Application Studies

A Review of Water Mist Fire Suppression Technology: Part II-Application Studies

Blast Mitigation Using Water Mist: Test Series II

Pool fire suppression performance by twin‐fluid water mist under low pressures in an altitude chamber

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