How should static eliminators be installed in tank areas?

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How should static eliminators be installed in tank areas? (1) Let’s first take a look at the requirements regarding anti-static measures outlined in the \"Code for Design of Oil Storage Tanks\" (GB50074-2014): 14.3.1 Steel storage tanks used for storing Class A, B, and C A liquids shall have anti-static measures in place. When transporting flammable and combustible liquids of Class A, such as types A, B, and C, friction between the liquid and the pipes as well as filters generates a large amount of static electricity. If this charge is not removed through grounding systems, it will accumulate on the storage tanks, resulting in a high electric potential. When this potential reaches a certain level at which discharge can occur, sparks may be generated, leading to explosions and fires. Therefore, it is stipulated that storage tanks for storing Class A liquids of types A, B, and C must be equipped with anti-static grounding. (This clause explains why anti-static measures need to be implemented.) 14.3.14 Anti-static devices for eliminating static electricity from the human body should be installed in the following areas where Class A liquids of types A, B, and C are handled: 1 Outside the door of the pump room ； 2 At the entrance of the upper ladder for the storage tank ； 3 At the entrance of the escalator on the operating platform in the loading/unloading area ； 4. The entrances and exits for boarding and disembarking at the dock. An apparatus for eliminating static electricity on the human body refers to handrails made of metal tubes; such devices are installed so that people can touch them as required before entering these areas, thereby removing the static charge carried by their bodies and preventing discharge in explosive environments that could lead to explosions. (This clause specifies the location where devices for eliminating static electricity on the human body should be installed.) 14.3.18 The disconnect joints used for testing the grounding resistance for lightning and static electricity protection, as well as the devices for eliminating static electricity on the human body, and the fixed grounding devices at locations where vehicles and tankers are loaded and unloaded, must not be installed in Zone 1, which is a zone with explosion hazards. (This clause specifies the areas where anti-static devices should be installed.) (2) Similar provisions can also be found in the \"Design Code for Oil Storage Tanks\" (GB 50737-2011): 10.3.1 Oil tanks shall be equipped with anti-static measures in accordance with the following requirements: 5 An anti-static device for eliminating static electricity generated by humans shall be installed at the entrance to the ladder leading to the upper deck of the oil tank ； (This clause specifies the location where static electricity elimination devices should be installed.) It is clear from the \"GB50074-2014 Design Code for Oil Depots\" and the \"GB50737-2011 Design Code for Oil Storage Depots\" that static electricity eliminators must be installed at the entrance to the tank area! The main forms of discharge from the human body are: discharge between a charged human body and a grounded object, with spark discharge being the most common type ； Discharges between charged dielectrics and the human body are mostly brush-shaped discharges between the electrically charged body and the human body, and these are usually spark discharges. In the petrochemical production plant area, human static electricity represents a hidden source of fire with the highest frequency of hazardous exposure, including static electricity generated from walking, operational activities, human induction, accumulation of spatial charges, and contact with charged media or materials. Static eliminators are divided into: self-inductive static eliminators ； External power supply type static eliminator ； Radial electrostatic eliminator ； Modular electrostatic eliminator. Workers operating in particularly hazardous environments, in order to avoid the hazards caused by electrical discharge from their bodies, generally touch an electrostatic dissipator located in a safe area before starting work, so as to eliminate the electrical charge on their bodies, and then proceed with their tasks. This article is reprinted from Self-Controlled Cat