Kolkata Police to get ₹60 lakh high-tech explosive detectors to tackle rising bomb threat alerts

To strengthen its bomb disposal capabilities, Kolkata Police is set to procure two advanced Explosive Vapor Detection (EVD) devices. These detectors will enhance the detection and analysis of explosives in public areas. Lalbazar, the Kolkata Police headquarters, has initiated the procurement process, estimating the total cost at ₹60 lakh. The devices are aimed at improving response during bomb threat situations and suspicious object inspections.

The EVD devices can detect extremely small quantities of explosives—up to 1 nanogram, which is one-billionth of a gram. These detectors identify explosives in vapor, particle, or liquid form, whether organic or inorganic. They are equipped with a 2-inch LED screen and an in-built speaker. When brought within two meters of a suspicious object, the device displays the explosive's name on screen and announces it audibly.

Each device weighs approximately 2 kilograms and is designed to be handled by a single operator. It is operational in a wide temperature range, from -10°C to 55°C, allowing use in varied field conditions. Once a substance is detected, the device provides real-time analysis, including the type, form, and quantity of explosive. It also helps assess whether the explosive can be safely defused.

Lalbazar sources confirmed that tenders for the devices have already been invited. Sample demonstrations from different vendors will be reviewed before the final purchase decision is made. The decision to acquire two devices initially is based on operational requirements and budgetary provisions.

The EVD technology is being introduced for the first time in Kolkata Police’s bomb disposal unit. Specialised training will be provided to personnel to ensure correct handling and effective use. Before induction into regular operations, a demonstration session will be organised for training and familiarisation.