Protection work of oil tank head

The correct use of oil tank heads and normal maintenance can effectively reduce equipment failures and can play a role in prolonging life. Secondly, we should not put them in an open environment when storing, because this will affect the pressure vessel itself. It will cause serious impact, which will cause cracks in the pressure vessel and waste of resources. Therefore, we must be careful when using the oil tank head to reduce the damage to the equipment.

1. Pay attention to the protection of the surface of the head of the oil tank, prevent bumps and scratches on the surface of the head, prevent direct contact with carbon steel, and avoid iron ion pollution. The structural design of the double-layer tank head should prevent excessive restraint stress, not stored in the open air, prevent rain, and avoid forced assembly welding. The structural design should prevent excessive restraint stress. The content of chloride ion in the water pressure test should not exceed 25mg/L. It should be dried in time.
 
2. The oil tank head cannot be cleaned with reducing acid such as hydrochloric acid. Measure the outer circumference of the double-layer tank head. Mark the cylinder and the double-layer tank head. After positioning welding is completed, perform welding. The oil tank head and After the cylinder body is welded, the welding seam, welding slag and splashes, and pollutants in and around the heat zone should be cleaned in time, and PT inspection and surface pickling should be performed to prevent knocking and scratching of the surface of the head. 3. The oil tank head will crack in the environment of nitrate, ammonia, alkaline sodium, etc. When ordering the oil tank head, it means that the residual stress will be eliminated. Austenitic stainless steel will have stress corrosion in the specific environment with chloride ions For cracks, please choose the appropriate material when designing. After the oil tank head is damaged, it must be replaced immediately. Therefore, we must do maintenance work in normal production work, so as to ensure the normal use of the pressure vessel.