Resource Efficiency: SRF is committed to promoting resource efficiency through adopting good international industry practice (GIIP) to achieve energy and water efficiency and promoting climate smart interventions in its business operations. To reduce its overall resource consumption, SRF is undertaking various resource efficiency measures including use of LEDs, sourcing electricity from renewable energy (e.g., 5MW onsite solar, 14 MW offsite wind, biomass), improvements to equipment efficiency (e.g., boilers, motors), rain harvesting and others. The Dahej facility source water from the industry park supply network for process steam requirement and other general purposes. Annual consumption of water in the recent year was approximately 2,700,000 m3. Electricity is sourced from grid (21MW including up to 10MW from renewables) and generated by on site coal-based co-generation (20MW) for both steam and electricity purposes. Co-generation plant technology is circulating fluidized bed combustion and efficiencies meet applicable international standards. Annual consumption of electricity in the recent year was approximately1,100,000 MWh. The Dahej facility continues improving its energy efficiency through optimized energy managements and new technologies, and energy intensity has dropped by 12% in the past two years.
GHG Emission: The Dahej facility’s total GHG emissions are estimated at 718,000 tCO2e in 2022 mainly due to electricity purchase from the grid (Scope 2) and coal-based co-generation of steam and electricity (Scope 1).Energy efficiency of the coal co-generation plant, from which electricity is sourced for the Dahej facility operation, is 79-81%.
Air Emission Monitoring and Ambient Air Quality: Major sources of emission include process emission, incinerator emission, and fugitive emission (e.g., leakage through valves, pumps, emission from open drum containing chemicals).SRF monitors Stack, ambient air quality and workplace air emissions in accordance with the operational permit requirements monthly by a third-party, a third-party environmental audit annually, and established continuous air emission monitoring using through DCS as described in PS1 section. .Monitoring parameters established include: 1) PM2.5, PM10, sulphur dioxide, nitrogen oxide, ammonia, lead, nickel, arsenic, ozone, hydrocarbon, hydrochloric acid, chlorine, carbon monoxide, benzene, benzo(a)pyrene, hydrogen sulphide, carbon disulphide, hydrogen fluoride and bromine for ambient air monitoring; 2) hydrogen fluoride and hydrochloric acid for stack monitoring; and 3) volatile organic compounds, ammonia, chlorine, methanol, toluene for workplace monitoring. Samples of monitoring results indicate that all the parameters are compliant with local regulatory requirements and applicable WBG EHS Guideline.
As for thermal oxidation facility (incinerator) which incinerates R23 refrigerant gas generated as a by-product of R22 manufacturing process, technical specifications shared from SRF indicate that the design meets good international industry practice with 2 seconds of residence time at 1200 °C and quick water quencher. The thermal oxidation facility is expected to be in operation by the end of September 2022. SRF will undertake stack emission monitoring, including dioxins and furans, as per the requirements of CTE, and the WBG EHS Guidelines (Waste Management Facilities).
SRF will operationalize the thermal oxidation (TO) facility (ESAP #3 for TO1 and ESAP #4 for TO2), and undertake stack emission monitoring for thermal oxidation facility (TO1) to demonstrate that emissions are compliant with local regulatory requirements and applicable WBG EHS Guideline within 6 months after starting the thermal oxidation facility operation (ESAP #5).
Additionally, as ESAP #6, SRF will install chlorine sensor system along the fence line of the facility on top of existing environmental air quality monitoring.
Ambient Noise: The Dahej facility is located in the industrial zone. Major sources of noise include mechanical movements, boiler operation and materials handling. Noise generating equipment is designed, maintained and operated to ensure that noise levels does not exceed permissible level as per the regulatory requirement. Samples of recent ambient noise monitoring indicate compliance with the regulatory requirements and WBG EHS Guidelines of ambient noise parameters at industrial and commercial zones.
Wastewater Management: The Dahej site facility has separate process and sewage wastewater treatment plant (WWTP). Treated wastewater is reused at the side in processes of cooling tower, humidification, gardening, and cleaning. Remaining effluent is discharged to industrial zone sewer system. Monitoring of treated wastewater performed by a third-party indicate compliance with the regulatory requirements and WBG EHS Guidelines. The Dahej facility has storm water drainage system, and collected contaminated rainwater is transferred for further treatment into the to process wastewater treatment plant. Treated stormwater is utilized for cooling tower makeup an excess water is disposed to sewer of the industrial estate.
Solid and Hazardous Waste Management: Hazardous wastes generated from the site operation typically include sludge from onsite WWTPs, spent solvents/catalysts, used oil, e-waste, etc. Non-hazardous solid waste includes scrap and domestic wastes. Both hazardous and non-hazardous wastes are segregated, labelled and stored in designated locations with use of secondary container or dyke for liquid where needed. Weekly inspection of waste storage areas is undertaken based on SOP. The disposal methods include reuse as raw materials, recyclable waste was collected and treated by licensed third-party companies , and using government approved landfills. Other organic waste, and other non-recoverable solvents are incinerated of at the onsite thermal oxidation facility (incinerator).Used catalysts are sent back to eh manufacturers for regeneration or disposal. Non-hazardous are collected by municipal waste collection system for disposal. Hazardous wastes are disposed through authorized contractors for recycle, incineration, and secured landfill. E-waste is normally generated due to discarded electronics which is sold to authorized dealers for recycling in compliance with the prevalent e-waste management rules.
Hazardous Material Management and Operational Safety: SRF is the largest manufacturer of refrigerants in India and fully compliant with the national plan to phasing out R22 by complying with the guidelines of Montreal Protocol, Kigali Amendment, and related regulations enacted by the Government of India (GOI). In accordance with the phase out requirements prescribed by the protocols, SRF has begun transitioning from old generation molecules with GWP to new generation/climate friendly substitutes. SRF is the only Indian manufacturer of ozone friendly refrigerants, namely R134a and R32, both of which it has developed using its own technology.
SRF manufacture molecules with high Global Warming Potential (GWP) such as i) R22, a hydrochlorofluorocarbon (HCFC), and ii) hydrofluorocarbons (HFC) which are subject to phase out by under Montreal Protocol. SRF currently uses R22 only as a feedstock for production of fluoropolymers and specialty chemicals intermediates. R22's application as feedstock is exempted under the Montreal Protocol/Kigali amendment.
As per the regulatory requirement, SRF is required by GOI to record, report and certify all R22 use as feedstock for production of controlled substance. In this regard, SRF is registered in and certified by MoEFCC in accordance with the Ozone Depleting Substance (Regulation and Control) Rules, 2000 including statutory requirements on reporting. Under the statutory requirement, SRF annually monitors data in accordance with Article 7 of the Montreal Protocol (data on production, import, export and feedstock of CFCs, Halons, CTC, HCFC and Methyl Bromide), and reports to the Ozone Cell, a national ozone unit set up by MoEFCC to render necessary services for effective and timely implementation of the Montreal Protocol and its ozone depleting substance phase-out program in India.
Besides routine EHS management, SRF has scheduled inspections for all critical equipment and pipelines, including hydrogen fluoride and chlorine pipelines. SRF also organizes annual EHS audits of all operations, which rotate between internal and external EHS audits. HAZOP is conducted for all automatic operations during the design phase and updated whenever the process is modified or every 5 years. HIRA is conducted for all manual operations before commissioning, then updated every six months. For specialty chemical productions, lab testing and pilot production are also conducted before scaling-up or commercial production.
As part of post-pandemic improvement programs, SRF will conduct a comprehensive safety audit and prepare an enhanced maintenance plan based on the audit results to ensure operation safety in the future (ESAP #7).