The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Lance D. Harry - One of the best experts on this subject based on the ideXlab platform.
-
Clean Agent System Utilizing FM-200® and Automatic Sprinkler System
Fire Technology, 2007Co-Authors: Eric W. Forssell, Mark L. Robin, Steven T. Ginn, Lance D. HarryAbstract:Data processing and telecommunication (telco) facilities are commonly protected against fire with a clean agent System, an automatic Sprinkler System, or with both a clean agent and an automatic Sprinkler System. The degree of protection provided by these Systems is vastly different, as is the cost incurred in employing these Systems. Comparison testing of a clean agent System utilizing FM-200® (HFC-227ea) and an automatic Sprinkler System was performed in order to illustrate the differences in the protection provided by gaseous clean agent Systems and automatic Sprinkler Systems. The tests were performed in a simulated data processing/telecommunications facility, and examined the performance of the suppression Systems on a plastics fire located inside a metal electronic equipment cabinet. In the clean agent System test, the fire was detected while it was small in size and was extinguished 17 sec after System actuation. Damage to the simulated facility and its contents was limited solely to the dislodging of several ceiling tiles near the clean agent nozzle, and a slight scorching of the cabinet containing the fuel array. The facility could be re-occupied and all Systems within the facility, other than those damaged inside the cabinet involved in the fire, would be functional immediately following the extinguishment of the fire. Cleanup of the facility would not be required prior to its use following the fire event, as no residues were produced during extinguishment. Under the identical fire scenario, the automatic Sprinkler System actuated approximately three minutes later than the clean agent System, and the fire was not extinguished by Sprinkler System. The Sprinkler System did achieve its primary objective of containing the fire to the room of origin and managing the temperatures at the ceiling to prevent structural damage and/or collapse, as the suspended ceiling remained intact, and the fire did not spread beyond the cabinet that contained the fuel array. Damage to the simulated facility was much more extensive than that resulting from the clean agent System test. All ceiling tiles were discolored and the tiles around the Sprinkler heads that activated were warped and sagging. The walls were discolored throughout the entire simulated facility and a dark ring of varying intensity and width was observed just below the level of the suspended ceiling. Paper items located within the simulated facility suffered extensive water damage, and the simulated facility floor was covered in water containing large amounts of soot. Immediate reoccupation of the facility and resumption of business would be impossible under these circumstances, as the fire and smoke damage experienced by the facility and its contents would require the replacement of the facility walls, ceiling, and floor, and would likely require the replacement of water-damaged electronic equipment. The test results are discussed in detail as are the implications of the results in the design of fire protection Systems for data processing and telecommunication type facilities.
-
Clean Agent System Utilizing FM-200® and Automatic Sprinkler System
Fire Technology, 2006Co-Authors: Eric W. Forssell, Mark L. Robin, Steven T. Ginn, Lance D. HarryAbstract:Data processing and telecommunication (telco) facilities are commonly protected against fire with a clean agent System, an automatic Sprinkler System, or with both a clean agent and an automatic Sprinkler System. The degree of protection provided by these Systems is vastly different, as is the cost incurred in employing these Systems.
Dong-feng Wang - One of the best experts on this subject based on the ideXlab platform.
-
Mission Reliability Modeling and Prediction of an Automatic Sprinkler System
DEStech Transactions on Computer Science and Engineering, 2020Co-Authors: Li-qin Wang, Dong-feng WangAbstract:If the Sprinkler System cannot be started at the time of need, it may cause huge economic losses. The System needs to have high reliability. Therefore, in the design stage of Sprinkler System, it is necessary to carry out reliability modeling and prediction to ensure that the System reliability can meet the requirements. In this paper, the design scheme of a building Sprinkler System is analyzed in depth, and then a task reliability model considering maintenance strategy, stand-by period failure and task period failure is established, and the reliability is predicted to evaluate whether the design scheme of the System can meet the design needs.
You Jin-hua - One of the best experts on this subject based on the ideXlab platform.
-
The optimizing arrangement of the Sprinkler head in automatic water Sprinkler System
Technological Development of Enterprise, 2008Co-Authors: You Jin-huaAbstract:The Sprinkler head arrangement is important in the design of automatic water Sprinkler System. The form and space of the Sprinkler head arrangement were optimized by taking full advantage of work System pressure under the criterion, in order to realize the safe, practical and economical effect.
Khalid Moinuddin - One of the best experts on this subject based on the ideXlab platform.
-
Reliability of Sprinkler System in Australian shopping centres –A fault tree analysis
Fire Safety Journal, 2019Co-Authors: Khalid Moinuddin, Jasmine Innocent, Koroush KeshavarzAbstract:Abstract The purpose of this research is to determine the reliability of Sprinkler Systems in shopping centres by utilising the fault tree analysis (FTA) method and the collection of data through a physical survey. As such, a comprehensive review of Sprinkler Systems in the low rise shopping centre buildings with less than four levels was conducted in two Australian cities: Melbourne and Adelaide. Data from eighteen buildings were collected and are presented in this paper. This study only includes wet pipe Systems, as these are the most commonly found Sprinkler System installations throughout Australia and New Zealand. Although Australian Standards and building regulations are taken as references, the methodology can be used in any other jurisdictions. The data related to the failure frequency, time required for repair and Sprinkler downtime due to tenancy changes were collected during site surveys. This data has been used to carry out FTA to derive the likelihood of the failure of the Sprinkler System. It is observed that the failure probability of a Sprinkler System in Australian shopping centre buildings lies in a range of 1.4% and 9.8% (i.e. reliability range of 90.2% and 98.6%). Compared to a previous study on high-rise office buildings (Moinuddin & Thomas, Fir Saf J. vol 63 pp 52–68, 2014), the reliability of shopping centres is found to be 3%–4% higher. Similar to high-rise office buildings, Sprinkler head's failure and isolation of the main stop valve during tenancy upgrades have significant effects on the reliability of the Sprinkler System. However, more regulated Sprinkler isolation and better maintenance of other components in the shopping centres result in better reliability.
-
Reliability of Sprinkler System in Australian high rise office buildings
Fire Safety Journal, 2014Co-Authors: Khalid Moinuddin, Ian ThomasAbstract:A comprehensive survey of Sprinkler Systems in high-rise office buildings was carried out to determine the reliability of various components of such Systems in Australia. Based on the survey data, a fault tree analysis (FTA) has been used to estimate the overall reliability of these Sprinkler Systems. Data from 26 buildings were collected and are presented in this paper. In addition, data from overseas surveys has also been considered based on their relevance to the office buildings. The analyses are confined only to wet-pipe Systems, as these constitute the vast majority of automatic Sprinkler Systems in Australia and New Zealand. To develop the fault trees, the designs found in usual practice are considered, rather than the designs just complying the Australian codes with the minimum requirements. A range of reliability for the Sprinkler Systems is estimated based on a number of considerations. Sprinkler zone shut off during tenancy changes and out of specification Sprinkler head appear to be the main factors that may lead to a Sprinkler System failure.
-
Factors affecting the reliability of Sprinkler System in Australian high rise office buildings
Fire Safety Science, 2007Co-Authors: Khalid Moinuddin, Ian Thomas, Samina Chea, Ian BennettsAbstract:A fault tree analysis (FTA) of the Sprinkler Systems for large high-rise office buildings is being carried out to determine the reliability of Systems in Australia. This analysis is particularly intended to provide information on the sensitivity of the reliability to various factors in the building operations such as, rate at which tenancy changes occur, monitoring of valves and back up batteries, maintenance procedure etc.. To determine probabilities of the occurrence of various Sprinkler System components failure, a comprehensive survey is being conducted involving a number of Australian high-rise office buildings (in this paper data from nine buildings are presented). In addition, data from overseas surveys has also been considered based on their relevance to the office buildings being considered. In this paper the analyses are confined only to wet-pipe Systems, as these constitute the vast majority of automatic Sprinkler Systems in Australia and New Zealand. To develop the fault trees, the designs found in usual practice are considered, rather than the designs just complying the Australian codes with the minimum requirements. Analysis shows that Sprinkler Systems for high-rise office buildings in Australia are likely to be more reliable than that indicated by recent US store and office fires statistics. The difference may be attributable to the wet-pipe only System and stringent maintenance requirements by Australian regulations. Sprinkler zone shut off during tenancy changes appears to be the main factor that may lead to a Sprinkler System failure.
Deng Yan-li - One of the best experts on this subject based on the ideXlab platform.
-
Study on feasibility of automatic Sprinkler System used in underground tunnel
Fire Science and Technology, 2005Co-Authors: Deng Yan-liAbstract:Realizing the characteristics of underground fire and the actuality of fire protection establishment, and put forwards the advice that we should set automatic Sprinkler System in underground tunnels. The smoke development and the temperature growing was simulated using field model (FDS), and the comparisons between the two models were made. From the result we can see that setting automatic Sprinkler System in underground tunnels has both advantages and disadvantages, but consider the situation synthetically it is feasible.
