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| Title: | Design of Cleane Agent Fire Extinguishing System as Per Nfpa 2001 Standards with Respect to Fire Hazard Scenarios in India. |
| Authors: | Chimote, R S
Kumar, Surendar
Singh, M P |
| Keywords: | 2011
Cleane agent
Fire extinguishing |
| Issue Date: | 4-Jan-2012 |
| Abstract: | This paper highlights the phase-out of the halogenated fire extinguishing agents: 1301, 1211 etc due to ozone depletion potential problems under Montreal protocol and further, briefly describes the clean agent fire extinguishing system design considerations with two Case-illustrations: Case 1 and Case 2, that are required to be designed to extinguish fires either by flame extinguishment or by inerting in accordance with the changing characteristics of fire hazard scenarios in building and industrial occupancies. What is very important for reduction of the flammable concentration in an atmosphere is the inerting which is required to be done below one-half of its lower flammable limit. Flame extinguishment shall be designed to cease combustion of a combustible solid or a flammable or combustible liquid. The characteristics of fire hazard scenarios with respect to anticipated fires have been continuously changing in India due to emerging trends in the up gradation/ modern furnishing and interior design considerations/ requirements in almost all the urban and semi-urban occupancies. Rural India has been picking up at little slower pace. The clean agent system design considerations must be planned and designed for urban and semi-urban occupancies in India such that the fire extinguishant-containers should not be in the hazardous area, and it shall suitably be in a protected location as close as possible to the hazard. Piping and fittings must be of a pressure rating commensurate with expected system pressures, and must be corrosion-resistant. Piping and fittings must be metallic, and the fittings can not be of cast iron and it may be of welded, brazed, or malleable iron. Fire suppression and detection shall be selected /designed to be intelligent for the anticipated class of fires and emerging fire load density pattern/layout with appropriately designed discharge flow rate, particle/droplet size distribution with respect to fire extinguishing efficiency parameters. An existing detection system may possibly be reused when designing a clean agent system, provided that the characteristics of the anticipated fire have not been changed. |
| Description: | Proceedings of National Conference November 3-4, 2011.
FIRE SCIENCE AND TECHNOLOGY - RESEARCH & ITS IMPLEMENTATIONS
Published by : CSIR- Central Building Research Institute, Roorkee |
| URI: | http://hdl.handle.net/123456789/687 |
| Appears in Collections: | Published Articles
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