tanks for flammable gases and liquids should be equipped with necessary fire-fighting equipment. Smoking, open flames and bringing sources of ignition into the tank area are strictly prohibited. 2. Storage tanks that store flammable, explosive, toxic, corrosive and other media should strictly implement the relevant regulations on the management of dangerous goods. 3. Before overhauling the tank, the electrical equipment associated with the tank must be powered off and the equipment handover procedure must be completed . 4. After the medium in the tank is used up, the inlet and outlet valves or blind plates should be closed to block the pipes and equipment connected to the tank, and obvious isolation signs should be set. 5. Tanks containing flammable, corrosive, toxic and suffocating media must be replaced, neutralized, disinfected, cleaned and analyzed and inspected after disposal. The analysis results should meet the requirements of relevant norms and standards. It is strictly forbidden to use air instead of flammable media. 6. A work permit must be obtained in the tank to work in the tank . If the operation is interrupted for a long time for some reason, the "In-Tank Operation Permit" should be reapplied. 7. Sampling and analysis 30 minutes before entering the water tank, the oxygen content is 18-23 percent (volume ratio). 8. Wear personal protective equipment when entering the tank to remove toxic and corrosive residues. 9. Scaffolding and lifting devices must be firm and reliable. It is strictly forbidden to enter and exit materials and tools during operation to ensure safe operation. 10. The lighting in the tank shall not use more than 24 explosion-proof lamps. 11. When high temperature work is required in the tank, a high temperature work permit must be obtained. 12. The operation in the storage tank must be equipped with a monitor, and reliable contact measures must be taken. 13. After the project is completed, the maintenance staff and supervisor will check the inside and outside of the fuel tank together. After confirming that it is correct, the person in charge must sign the certificate of operation on the tank before sealing the well. 14. When draining the water after a pressure test, it must be connected to atmosphere to prevent vacuuming.
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