16 March 2016 Current Affairs: Haryana’s new secretariat building in Chandigarh has become the only building in the country to have an early earthquake warning and security system (onsite). The system Installed and demonstrated by a team from Terra Techcom Private Limited, New Delhi, and Secretary Electronics GmbH, Germany, who have collaborated with India for the project.Earthquake Warning System is already being used in 26 countries around the world and it can give us crucial seconds so that we can evacuate in event of an earthquake. The system works on the principle of detection of primary and secondary seismic waves of an earthquake. The primary waves are fastest kind of seismic wave and the first sign of earthquake but they do not cause any damage they are soon followed by secondary waves that have the potential to cause damage, which is known to us as an earthquake. The system detects intensity of the primary waves and gives out warning alarm only when the intensity of the secondary waves is high enough to potentially cause damage.In case of Earthquake it gets activated automatically and takes step for security and safety of people and infrastructure by shutting off elevators, electricity, gas supply, water supply, opens emergency gates and warns people of an earthquake by signalling an alarm.