MUMBAI, India, May 1 -- Intellectual Property India has published a patent application (202641047823 A) filed by Srm Institute Of Science And Technology, Ramapuram Campus; and Easwari Engineering College, Chennai, Tamil Nadu, on April 15, for 'offline fail-safe confined space entry authorised system based on gas clearance rate.'
Inventor(s) include N Samyuktha; Jayakrishnaa S; Divyashree Kumar; Mr. Kingsly Stephen R; and Dr. A. Manju.
The application for the patent was published on May 1, under issue no. 18/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to an offline confined space safety system designed to prevent unsafe human entry into hazardous enclosed environments such as manholes, septic tanks, underground chambers, and industrial confined spaces. The system provides a physically enforced entry authorization mechanism based on real-time environmental assessment and system health verification. Unlike conventional safety systems that rely on instantaneous gas concentration thresholds or alarm-based warnings, the disclosed invention evaluates environmental safety using a gas clearance rate-based monitoring method. The system continuously measures hazardous gas concentration at successive time intervals and computes a gas clearance rate to determine whether the gas is being effectively removed following ventilation. Entry into the confined space is permitted only when the calculated gas clearance rate satisfies predefined safety criteria, thereby preventing false safe conditions caused by temporary or unstable gas reduction. In addition, the system incorporates a fail-safe safety interlock mechanism that continuously monitors fault conditions including power loss, sensor malfunction, abnormal data behaviour, or processing unit failure. Upon detection of any fault condition, the system automatically forces an electromechanical locking mechanism into a default closed state, physically preventing entry. The invention operates entirely offline without dependence on internet connectivity or external communication infrastructure, making it particularly suitable for rural and low-infrastructure environments. By combining gas clearance behaviour analysis with fail-safe physical enforcement, the invention significantly enhances worker safety, reduces reliance on human judgment, and minimizes the risk of fatal accidents during confined space operations."
Disclaimer: Curated by HT Syndication.
