What is the main focus of inspecting explosion-proof electrical equipment on-site?
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What is the main focus of inspecting explosion-proof electrical equipment on-site? We all know that in flammable and explosive hazardous environments such as those involving oil, chemicals, and natural gas, a large number of explosion-proof electrical devices need to be installed or used to prevent sparks and high temperatures generated during operation from igniting the surrounding explosive gases or dust. Furthermore, to ensure the safety and reliability of the equipment, it is also necessary to commission a professional testing agency to conduct safety inspections on the explosion-proof electrical equipment on site. https://p3-sign.toutiaoimg.com/tos-cn-i-axegupay5k/7dd20ce94cdb4b28b322c0635ccfa21e~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1767259603&x-signature=CFZK2bugxwkVRc%2BEEnR7lIQlBUE%3D So what are the main aspects of this so-called on-site explosion-proof electrical safety inspection? Today, Zhongpeng will give you a thorough overview ； Firstly, the enterprise needs to provide information including, but not limited to, maps showing the areas at risk of explosion, lists of flammable and explosive substances (MSDS), lists of explosion-proof electrical equipment, and copies of the certification documents confirming that such equipment meets explosion-proof standards. This is to help engineers quickly understand the types and quantities of explosion-proof electrical equipment on site, as well as the types of flammable and explosive substances present. In many chemical plants, there is more than one flammable and explosive hazard substance, and the explosion-proof equipment required for different explosive substances varies as well. One of the items checked on site is to ensure that the selected explosion-proof electrical equipment is suitable for the hazardous areas present there. In addition to selecting explosion-proof equipment, engineers also pay close attention to: equipment nameplates https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/ef8eca0206d247c8811a029dd4b66daa~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1767259603&x-signature=LVyfEx%2BtWhbl%2FrI44fTkO44pj3I%3D, installation devices https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/045ab5f9e9bd493d80361ef01bd2e6e1~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1767259603&x-signature=j2WzOZYsb%2B5VbLgO9FI8RyVwQqw%3D, sealing measures https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/954a09fe3601403a919dc4a11cedc34f~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1767259603&x-signature=4HK6RMBqnjbvWpgVqEw9B5rIb%2Fo%3D, electrical grounding https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/d238aa96187b4f2bae25663bc811d0ee~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1767259603&x-signature=Q1GrQsOoLg1Npu4equG7YDKt24w%3D, and equipment fastening https://p3-sign.toutiaoimg.com/tos-cn-i-6w9my0ksvp/98ab82e95c61440abadb2622b31b9cf1~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1767259603&x-signature=rsqXvE7S74%2F6BB9RdfG2gpEXEOQ%3D. Finally, we check the explosion-proof certification numbers for each piece of equipment to ensure they are genuine and valid. For the areas that do not meet the requirements, engineers will take photos as records and prepare a report (along with a plan for making corrections). The company must address the deficiencies identified in accordance with the rectification plan outlined in the corrective action report; thereafter, engineers will conduct a re-inspection, and once this is completed, the final inspection report will be issued. It should be noted that on-site explosion-proof electrical safety testing is not something that anyone can perform. In AQ3009-2007 “Safety Specifications for Electrical Explosion Protection in Hazardous Areas”, there are clear requirements regarding inspection qualifications and cycles: Enterprises that conduct safety inspections of explosion-proof electrical equipment on-site must be safety inspection and testing institutions with professional qualifications in explosion protection. In other words, they must possess a “Qualification Certification for Inspection and Testing Institutions” or have authorization from such an institution ； The requirement for on-site inspection cycles is an inspection every three years; some companies may adopt a policy of inspections every year or every two years, with the specific schedule depending on the company’s own arrangements, but it must not exceed three years in any case.
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