पेट्रोलियम तथा विस्फोटक सुरक्षा संगठन ( PESO )मुख पृष्ठ / फॉर्म और ... Learn about PESO Certification—its importance, key benefits, required documents, and step-by-step process for safe handling of explosive and gas equipment. Applicants / licensees can check the status of their applications or download issued letters through the links - “Application Status,” “Granted/Discrepancy,” “Discrepancy/Interview Letter,” and “View Letter” - available in their online profiles after logging into the respective portals given below. For applications submitted under the Petroleum Rules, 2002, Calcium Carbide Rules, 1987, Gas Cylinders Rules, 2016, and SMPV (U) Rules, 2016, please use the following link: https ... PESO is responsible for regulating the safety of hazardous substances such as explosives, compressed gases, and petroleum.