Anti-corrosion coating protection measures for the inner walls of petrochemical storage tanks
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There is already an oil storage tank with a capacity of 2000 m³, whose inner walls are coated with an anti-corrosion layer. Now, steel supports need to be welded to the outer wall of the tank. Could anyone suggest any protective measures that can prevent the anti-corrosion coating on the inner walls from being damaged by the high temperatures generated during welding on the outer wall?
During the welding of steel supports, the following measures can be taken to protect the anti-corrosion coating on the inner wall of the oil storage tank: 1. Use insulating materials: Apply an insulating layer on the inside of the tank, such as heat-resistant insulation blankets or fire-resistant materials. This effectively prevents the high temperature generated by outer wall welding from affecting the inner wall. 2. Control welding parameters: Adjust the welding current and voltage, and use an appropriate welding speed and cooling method to reduce heat input during welding. 3. intermittent welding: Avoiding prolonged continuous welding and using intermittent welding methods can effectively control the temperature in the welding area and reduce heat transfer into the tank. 4. Add cooling measures: During welding, water cooling or air cooling can be used on the outer wall of the tank near the weld area to help reduce the temperature in that region. 5. Use welding methods with low heat input: Consider employing TIG welding or MIG welding with low heat input, as these methods result in less heat input compared to other welding techniques. Through the above measures, the anti-corrosion coating on the inner wall of the oil storage tank can be protected to a certain extent, preventing damage to this coating due to welding operations on the outer wall. .