The Centre for Fire, Explosive, and Environment Safety, a defence laboratory of the Defence Research and Development Organisation (DRDO), has developed a new gas called Hepta Fluropropane for firefighting systems. This gas would soon replace Halon gas, currently used in fire fighting systems for critical infrastructure, said Dr A.K. Kapoor, Director of the Defence Laboratory. The market size for this Halon substitute is about Rs 150 crore. The DRDO has passed on the technology for this Halon alternative to Mechvac Fabricators (I) Pvt Ltd, a Mumbai-based engineering firm. Mr R.K. Chodankar, Chairman of Mechvac Fabricators, said that other than India, the technology for making Hepta Fluropropane was only available with the US. Mechvac has already spent Rs 10 crore in setting up a manufacturing facility for the gas and the production will start next year.