Visakhapatnam gas leak
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|Date||7 May 2020|
|Time||3:00 a.m. IST|
|Location||R. R. Venkatapuram, Visakhapatnam district, Andhra Pradesh, India|
|Cause||Malfunction in the cooling system of styrene storage tanks (suspected)|
The Visakhapatnam gas leak, also referred to as the Vizag gas leak, was an industrial accident that occurred at the LG Polymers chemical plant in R. R. Venkatapuram village near Gopalapatnam on the outskirts of Visakhapatnam, Andhra Pradesh, India, during the early morning of 7 May 2020. The resulting vapour cloud spread over a radius of about three kilometres (2 mi), affecting the nearby areas and villages. As per the National Disaster Response Force (NDRF) the death toll was 11, and more than 1,000 people became sick after being exposed to the gas.
Preliminary investigations concluded that the accident was likely the result of improper maintenance of units storing the styrene monomer, improper storage and operation errors. The Andhra Pradesh government announced an ex gratia of ₹1 crore (US$140,000 or €130,000) each for kin of the deceased as well as funds for the injured, allocating a budget of ₹30 crore (US$4.2 million or €3.9 million) for the compensation of all those affected.
The chemical plant at the R. R. Venkatapuram village was established in 1961 as Hindustan Polymers. It manufactures polystyrene, its co-polymer products, and engineering plastic compounds. In 1978, it was merged with McDowell & Co. In 1997, it was acquired by South Korea-based LG Chem, which renamed the company to LG Polymers India. LG Chem expanded its operations at LG Polymers plant five times between 2006 and 2018.
Lack of environment clearance
The South Korean parent company, LG Chem, said in its May 2019 affidavit, a part of an application for environment clearance, that the company did not have a legitimate environmental clearance issued by the Ministry of Environment, Forest and Climate Change (MoEFCC), after receiving an Environmental impact assessment (EIA), substantiating the produced quantity and for continuing operations. According to the EIA notification (amendment) of 2006 under the Environment Protection Act of 1986, LG chemicals India, which is part of the petrochemical industry, falls into category 'A' and should get clearance from the MoEFCC every time they expanded their plant or brought a change to their manufactured product after November 2006. LG Chem expanded its operations at LG Polymers plant five times between 2006 and 2018 without such clearance. According to the May 2019 affidavit, since 1997, it was instead operating with state permits required for starting a new business and operating it and renewed every five years.
However, LG Chem spokesman Choi Sang-kyu told the Associated Press (AP) that the company had followed Indian laws and operated based on the guidelines provided by the officials, both at the state and federal level. He said that the affidavit was not an admission of violation of law but a pledge of compliance with the law. After the 2006 notification, Choi said that the company consulted the ministry and was told that no clearance was required. However, Environment Secretary C. K. Mishra told the AP that the plant would have no requirement of clearance in 2006, but a clearance was imperative for any expansion or production change since then.
LG Polymers had never asked for a federal clearance until 2017 and per the minutes of a meeting between the company and the Andhra Pradesh Pollution Control Board, the latter denied the former's request of producing engineering plastics at its plant. However, a member of the state pollution board said that there was no information available regarding any order by state government to stop the operation of the plant. In 2018, the company applied for an environmental clearance for the first time, to expand its manufacturing capacity of polystyrene, a plastic used to make bottles and lids. The Environment ministry sent the application for a review citing that the company didn't have a clearance for the chemicals it was already manufacturing. The company withdrew the application while applying for a retroactive clearance that the ministry offered to companies in 2018 as a one-time amnesty, which remained pending till the fatal leak occurred.
According to the AP, officials and legal experts like Mahesh Chandra Mehta, an environment lawyer, indicated that the plant seemed to be operating in a legal grey area, with the environmental clearance required under central regulations while the state executives are to look after the enforcement. However, to date[when?] there is no indication that the lack of environment clearance played a role in the disaster. Experts are also skeptical, as the plant operated for years without any clearance. Mehta also pointed out that many such industries are operating without a clearance, which shows how weak the environmental laws are in India with several of the world's most polluted cities. Mehta also said that each time the company renewed that permit, the state pollution board, which has the power of enforcing federal environmental law, would've been able to fine the company or deny a permit until it received federal clearance, which it never did. Dr. B. Sengupta, environmental scientist and a former head of Central Pollution Control Board (CPCB), said that the state permits only consider pollution and do not consider the safety aspects, whereas the federal clearance assesses those risks considering the handling and storage of hazardous materials, prevention of any disaster and mitigation in case of a disaster.
Leakage and effects
Facilities and leakage
On 7 May 2020, the plant was re-opened following the nationwide lockdown implemented as a response to the COVID-19 pandemic. The plant stored 2,000 metric tons (2,000 long tons; 2,200 short tons) of styrene in tanks, which were left unattended. Styrene monomer must be stored between 20–22 °C (68–72 °F) above which it will rapidly vaporize. It is believed that a computer glitch in the factory's cooling system allowed temperatures in the storage tanks to exceed safe levels, causing styrene to vaporize. Between 2:30 a.m. and 3:00 a.m., when maintenance activity was in progress, the gas leaked from the plant and spread to nearby villages.
As of 7 May, the fumes had spread over a radius of 3 kilometres (2 mi). Five villages—R. R. Venkatapuram, Padmapuram, BC Colony, Gopalapatnam and Kamparapalem—were the most affected areas. Hundreds of people were rushed to hospitals with breathing difficulties and burning sensation in the eyes. Many had been found lying on the ground unconscious due to the effects of the gas. According to the initial estimate, at least 11 people had died, and 20–25 people were in critical condition. By the next day, the death toll had risen to thirteen. More than 1,000 people were reportedly exposed to the gas.
Also on 7 May, late at night, police ordered the evacuation of people in a 2 km (1.2 mi) radius around the leak. However, police subsequently stated that this evacuation was precautionary and that there hadn't been a second leak.
Probable leakage and removal of chemicals
Experts from central government who were inspecting the plant said that it would have faced a catastrophe had the violation of safety norms at other storage facilities at the plant gone unnoticed for a few more days. They said those facilities were vulnerable to a leak of vapour on a larger scale and stored in a high-risk condition at that time. An expert said polymerization was noticed in another storage.
According to Deccan Chronicle, two experts of the National Disaster Management Authority (NDMA), Dr Anjan Ray, director of the Indian Institute of Petroleum, and Shantanu Geete, an industry expert, inspected the storage facilities of the plant also the Vizag port. Dr. Ray, an expert in styrene, recommended the government that the materials should be immediately removed from the facilities. On 11 May 2020, the Andhra Pradesh government directed the company to remove 13,000 metric tonnes (MT) of material out of the country. The state government arranged two vessels with the help of the Ministry of Shipping, to carry 8,000 MT and 5,000 MT respectively to the company's headquarter at Seoul.
Mekapati Goutham Reddy, minister of industries of Andhra Pradesh, said that the preliminary conclusion from the inspections of experts shows that the storage facilities were not designed to keep the material for a long duration. However, the plant personnel claimed that the material is emptied every 10 to 15 days and never stored more than the assigned period.
Relief and rescue
Nearly 200-250 families were evacuated from villages in a five-kilometre (3.1 mi) radius around the plant. About 300 people were hospitalized, according to a media report. The Chief Minister of Andhra Pradesh Y. S. Jaganmohan Reddy announced an ex gratia of ₹1 crore (US$140,000) for the kin of those deceased in the accident. He further announced ₹25,000 (US$350) for those who received primary treatment, ₹1 lakh (US$1,400) for those who received longer treatment, and ₹1 million (US$14,000) for those on ventilator support.
To neutralize the gas, around 500 kilograms (1,100 lb) of the antioxidant 4-tert-butylcatechol (PTBC) will be airlifted by the Government of Andhra Pradesh and sent to the crippled factory. The Central Government flew in a specialized CBRN (chemical, biological, radiological and nuclear) team of the National Disaster Response Force (NDRF) from Pune to the site as well.
Remedial measures by LG
LG Chemicals started a support measures to eliminate all risk factors in the plant. In its effort, LG brought ACtify 2680, a green retarder and ACtify 2673, a polymerisation inhibitor from Dorf Ketal Chemicals, a Mumbai-based chemical company. LG said the retarder and the inhibitor will be added into the tanks of the Styrene stored at LG Polymers which will prevent further degradation and any future gas leak which will ensure the safety of the site. The ACtify series retarder, believed to be a new innovative green polymer retardant, is thermally stable and provides required protection during unscheduled shutdowns.
On 13 May 2020, the South Korean company informed media that an eight-member technical team, comprising experts from production, environment and safety department, from its Seoul headquarters was sent to investigate the incident and to rehabilitate the victims. LG Polymers India said the team would take prompt rehabilitation and real-time remedial measures. They would meet the victims and affected families to explain support measures in detail and also hold meetings with the local State government officials.
According to the preliminary investigation, a gas valve malfunction is believed to have caused the leak. The leak was from one of two chemical tanks that had been left unattended since March 2020 due to the COVID-19 lockdown. The malfunctioning of the tank's refrigerating unit led to an increase in temperature, causing the liquid chemical, suspected to be styrene, to evaporate. However, experts have claimed that other chemicals may have also leaked, as styrene is unlikely to spread over 4 to 5 kilometres (2 1⁄2 to 3 mi) due to its chemical properties.
As part of the process of the police investigation following the leak, a first information report (FIR) was filed against LG Polymers by the local police. The report allowed for possible charges under sections 278 (making the atmosphere noxious to health), 284 (negligent conduct with respect to poisonous substance), 285 (negligent conduct with respect to fire or combustible matter), 337 (causing hurt by act endangering life or personal safety of others), 338 (causing grievous hurt by act endangering life), and 304 (causing death by doing any rash or negligent act not amounting to culpable homicide) of the Indian Penal Code (IPC).
National Green Tribunal
A petition was filed in the National Green Tribunal (NGT), demanding an investigation into the incident by a high-level committee. A bench headed by the then NGT chair, Justice Adarsh Kumar Goel was formed, and the case was scheduled to be heard on 8 May 2020.
On 8 May, the bench ordered LG Polymers India to deposit an amount of ₹50 crore (US$7.0 million) as an initial amount with the District magistrate of Vishakapatanam to mitigate the damages caused due to the incident. It issued notices to the Andhra Pradesh Pollution Control Board (APPCB), the Central Pollution Control Board (CPCB) and the Union Ministry of Environment, Forest and Climate Change (MoEFCC), in which it sought the responses of the individual boards and the ministry. It also constituted a five-member fact-finding committee to probe the incident and to deliver a report to the bench. The committee would be supervised by former Andhra Pradesh High Court judge, B. Seshasayana Reddy.
Human Rights Commission
The same day as the incident, the National Human Rights Commission of India (NHRC) gave notice to the Andhra Pradesh Government and the central government that it considered the incident a gross violation of India's constitutional right to life. In their notice, the NHRC was seeking a detailed report from the Andhra Pradesh Government on rescue operations, medical treatment and rehabilitation. It also asked the Union Ministry of Corporate Affairs to investigate any possible breaches of workplace health and safety law. Both reports are expected to be delivered within four weeks.
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