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Safety Acceptance Evaluation Report for the 300,000 tons/year ethylene glycol production with co-production of LNG project of Shanxi Woneng Chemical Technology Co., Ltd. Author/Source: Shanxi Saifort Safety and Environment Technology Co., Ltd. Date: 2021-06-25 Clicks: 9 Safety Acceptance Evaluation Report for the 300,000 tons/year ethylene glycol production with co-production of LNG project of Shanxi Woneng Chemical Technology Co., Ltd. Project Type: Safety Acceptance Evaluation Project Overview: Shanxi Woneng Chemical Technology Co., Ltd. was established on November 15, 2017; it is a wholly-owned subsidiary of Shanxi Jinnan Iron and Steel Group Co., Ltd. Its registered capital is RMB 200 million, and its legal representative is Zhang Tianfu. The company is classified as an other limited liability company, with its business scope including the development, technical consultation, technical services, and technology transfer in the field of chemical production； Selling coal chemical products, steel, iron ore, iron ore powder, concentrated ore powder, limestone, high-calcium stone, metal materials (excluding precious and rare metals), chemical products, mechanical and electrical equipment, hardware and electrical goods, concrete; manufacturing of hazardous chemicals. Shanxi Woneng Chemical Technology Co., Ltd. has established 7 management departments, 4 production centers, and 4 management hubs. The 7 management departments are: Safety and Environmental Protection Department, Production Scheduling Department, Equipment Engineering Department, Technical Management Department, General Management Department, Materials Procurement and Supply Department, and Finance and Property Rights Department. The 4 production centers are: Ethylene Glycol Synthesis Center, Purification Center, Cryogenic Center, and Utilities Center. The 4 management hubs are: Equipment Center, Electrical Center, Instrumentation Center, and Quality Inspection Center. There is a gas protection station on the factory premises, which is under the management of the fire brigade of Shanxi Jinnan Iron and Steel Group Co., Ltd. The company has a staff quota of 511 people and operates on a “four-shift, three-turnover” schedule. There is a Work Safety Committee responsible for overseeing all safety management efforts throughout the company ； The permanent safety management department is the Safety and Environmental Protection Department; each production center has full-time safety managers, while work sections and teams have part-time safety managers. Authority that approved the project’s safety conditions: Former Shanxi Provincial Work Safety Supervision Bureau (Document No. Jin An Jian Wei Hua Project An Tiao Shen Zi [2018] 33) ； Approval authority for safety facility design: Shanxi Provincial Emergency Management Department (Document No. Jin Ying Ji Hu Hua Project An She Shen Zi [2019] 14) ； Project investment: 3,641,839.8 thousand yuan ； Project start date: August 2018 Completion date: May 2020 ； Date of commencement of trial production: July 2020 ； Product plan: Annual production of 300,000 tons of ethylene glycol, with 137,600 tons of LNG produced as a by-product. Safety assessment methods used include safety checklists, preliminary hazard analysis, and qualitative and quantitative approaches. The main technical tools employed are photography, tape measures for distance measurement, GPS trackers, on-site investigations, and literature review. Key issues identified during the assessment: The inspection frequency indicated on the inspection signs in various plant areas is once every 2 hours; however, the inspection frequency for the pipelines in the entry zones is not specified. The primary alarm threshold for hydrogen sulfide in the control system is 10 ppm, while the secondary alarm threshold is 15 ppm ； No-light alarm. At the root of the gas release pipe of the main pipeline entering the boundary zone, there is a single valve. There are few wind vanes on site, and they are not prominent. There is no evacuation lighting or evacuation safety signage at the exits of buildings such as the screw compressors used in coke oven gas purification on the second floor. The eyewash stations in areas such as the comprehensive loading and unloading zone lack anti-freezing measures. There are few safety warning signs in the factory area. The foam fire station in tank farm 122B has windows facing the crude methanol storage tanks. On the east side of Substation 311, there are the shift change rooms for the ethylene glycol center and the cryogenic center, both of which are located within the plant area. On the east side of the fire station, there are 158 facilities including the shift change room of the public center. The recommended countermeasures are to regularly check the reliability of the detection and alarm devices for flammable and toxic gases in hazardous areas, in order to continuously monitor the concentration of flammable substances in the air. Production positions exposed to hazardous substances should ensure that accident cabinets and various emergency protection equipment are in good condition, so as to safeguard the safety of operators in the event of an accident. Equipment, facilities, and pipelines should be treated for corrosion prevention on a regular basis. The ventilation system of positive-pressure ventilated electrical equipment must not be shut down arbitrarily. 47 rules, including a strict prohibition on the floating disk of internal floating roof storage tanks hitting the bottom during operation. Safety assessment conclusion: Through the safety acceptance assessment of Shanxi Woneng Chemical Technology Co., Ltd.’s project for producing 300,000 tons of ethylene glycol annually along with LNG, Shanxi Saifort Environmental Protection Technology Co., Ltd. concludes that the safety facilities of this project meet the requirements set forth in **current laws, regulations, departmental rules, and standards related to work safety, and are thus qualified for completion acceptance. On-site inspection date: The date of the initial on-site inspection was September 25, 2020 ； Reexamination date: December 28, 2020. Evaluation Report Submission Date: June 1, 2021