Hindustan Petroleum Corporation Limited hindustan petroleum submitted an updated disclosure to stock exchanges on April 25, 2026, providing restoration progress following the fire incident at HPCL Rajasthan Refinery Limited (HRRL). This follows the initial incident that occurred on April 20, 2026, in the Crude Distillation Unit (CDU) section of the joint venture refinery.

Detailed Investigation Findings

Detailed investigations conducted after the incident have confirmed the initial assessment that the fire was localized in the heat exchanger stack. The investigation revealed that only 6 exchangers and their supporting equipment were impacted by the incident. Based on circumstantial evidence, the cause of fire is now suspected to be leakage from pressure gauge tapping point on the vacuum residue exchanger inlet line, providing more specific details than the initial assessment of hydrocarbon leakage through valves or flanges.

Restoration Progress and Timeline

The company has provided a comprehensive timeline for the restoration and commissioning process. Restoration work is currently in progress and is expected to be completed within the next 3-4 weeks from the April 25 update. The CDU restart is anticipated in the second fortnight of May 2026, indicating a systematic approach to bringing the facility back online.

Other secondary units are already under advanced stage of commissioning as per the original plan, suggesting that the incident's impact has been contained to the specific affected areas. The company expects trial production of main products including LPG, MS, HSD, and Naphtha to start within May 2026, followed by stabilization and full commissioning of the units.

Impact Assessment

As reported in the initial disclosure, the scheduled dedication of the refinery by the Prime Minister on April 21, 2026, was postponed as a precautionary measure. The company continues to assess the financial and operational impact, with preliminary indications suggesting it will not be material to the overall operations.

All personnel remain safe, and other sections of the refinery continue to remain unaffected by the incident. The systematic restoration approach and clear timeline demonstrate the company's commitment to bringing the facility back to full operational capacity safely and efficiently.

The updated disclosure was signed by Rajneesh Narang, Director - Finance, and communicated to both BSE Limited and National Stock Exchange of India Limited under Regulation 30 of the listing obligations.

Hindustan petroleum Corporation Limited has received an Environmental, Social and Governance (ESG) rating from ESG Risk Assessments & Insights Limited, as disclosed to the stock exchanges on April 23, 2026. The disclosure was made pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015.

ESG Rating Assignment Details

The company informed both BSE Limited and National Stock Exchange of India Limited about the ESG rating assignment through an official communication. ESG Risk Assessments & Insights Limited independently assigned the rating to Hindustan Petroleum Corporation Limited without any engagement from the company.

Regulatory Compliance and Transparency

The disclosure was made under Schedule III and other applicable provisions of the SEBI regulations, demonstrating the company's commitment to regulatory compliance and transparency. Company Secretary Rakesh Kumar Singh signed the official communication to both stock exchanges, ensuring proper documentation and record-keeping.

Independent Assessment Clarification

Hindustan Petroleum Corporation Limited specifically clarified that it did not engage ESG Risk Assessments & Insights Limited for the ESG rating process. The rating agency independently prepared the report and assigned the rating based on their own assessment methodology and criteria.

Rating Publication and Access

The ESG rating details have been published by ESG Risk Assessments & Insights Limited on their official platform. The rating information is accessible through their website, providing stakeholders with transparent access to the company's ESG performance evaluation. This independent rating contributes to the broader ESG disclosure framework for listed companies in India.