International Journal of Emerging Technology and Advanced Engineering Website: www.ijetae.com (ISSN 2250-2459, ISO 9001:2008 Certified Journal, Volume 4, Issue 7, July 2014) 466 Gas leak Detection, Monitoring and Prevention Puran Gour 1 , Bhausaheb Sonawane 2 1 Professor, 2 P.G.Student, NRI College, E & C Department, Bhopal, India Abstract— Liquefied petroleum gas leaks can happen inside a home, commercial premises, gas powered vehicle and in gas transportation vehicles. Leakage of this gas can be dangerous as it raises the risk of building fire or an explosion, Catastrophe will be occurred. The causality caused by this hazard is still common news in media. The developed system gives the alarm after detection of the presence of gas, GPS Receiver to locate the location, Gas leakage can be controlled by valve and by using wireless communication module Continuous real time monitoring of Leak Gas. Keywords— Microcontroller, Global Positioning System, sensors, wireless communication. I. INTRODUCTION LPG is commonly used in homes for central heating, hot- water, gas fires, cooking and in mobile heaters for leisure activities such as boats, caravans and barbecues .This energy Source is primarily composed of propane and butane which is highly flammable chemical compounds.gas leakage in industries, leakage from gas transport system. The danger of LPG, Co gases arising from two aspects, one is the toxicity of these gases themselves, the other side is that the accumulation of these gases will easy be ignited. The position of gas tank or pipeline is usually fixed, so it is easy to inspect, yet the fire site is random, and it will be difficult for inspection. The danger of the CO gas is the same as the LPG and others dangerous gas in the environment. The rapid growing population and economic development is leading to a number of environmental issues in India because of the uncontrolled growth of urbanization and industrialization, expansion and massive intensification of agriculture, and the destruction of forests. Major environmental issues are forest and agricultural degradation of land, resource depletion (water, mineral, forest, sand, rocks etc.), environmental degradation, public health, loss of biodiversity, loss of resilience in ecosystems, livelihood security for the poor Road dust due to vehicles also contributing more and more air pollution. The wire-based techniques connect the sensors along the pipelines with wires. Monitoring information measured by each sensor is transmitted to the monitoring control center through these wires. Nevertheless, the wire-based monitoring systems are vulnerable to damage in any part of the networks and the deployment cost in an underground scenario is very expensive. In highly risky industries like gas, petroleum industries the accidents by leakage will occur within fraction of seconds, so we cannot control it immediately. Developed Monitoring system give the advantages to users such that they can monitor the situation of the room or the place where leakage occurrence may happen at safe distance continuously also system gives the alarm after detection of the presence of gas, GPS Receiver to locate the location, Gas leakage can be controlled by valve and by using wireless communication module Continuous real time monitoring of Leak Gas. II. BLOCK DIAGRAM OF DEVELOPED SYSTEM Figure 1: Functional Block Diagram of System (Transmitter) Figure 2: Functional Block Diagram of System (Receiver)