What are the chemical storage tanks
1, metal storage tank: carbon steel storage tank, stainless steel storage tank, aluminum storage tank, etc.
2, non-metallic storage tank: plastic storage tank, ceramic storage tank, glass fiber reinforced plastic storage tank, etc.
3, metal non-metal composite storage tank: steel lined tetrafluoroidal storage tank, steel lined polyethylene storage tank, steel lined polyolefin storage tank, steel lined rubber storage tank.
Chemical storage tank maintenance and overhaul
Clean or replace liquid level gauge Repair or replace inlet, outlet and blowdown valves dredge and clean cooling water coils. Check and repair the safety valve vent arrester. Repair the anti-corrosion layer and the insulation layer. Overhaul: including the repair project repair chemical storage tank internal parts, found cracks, serious corrosion and other parts, repair or replace the cylinder joint accordingly. The repair can be repaired by polymer composite materials. According to internal and external inspection requirements, as well as after repairing or replacing cylinder joints, leakage test or hydraulic test should be carried out. Full removal of embroidery heat preservation. Handle other problems found in the internal and external inspection of the tank.
Maintenance methods and quality standards for the repair of storage tanks, such as opening holes, repairing welding, replacing cylinder joints, etc., the specific construction plan shall be formulated according to the "Capacity Regulations" and other relevant standards and approved by the technical charge of the unit. Repair materials (base metal, electrode, wire, flux, etc.) and valves, should have quality certificates, the use of old material valves, fasteners, must be inspected before use. The fasteners for assembling the storage tank should be coated with lubricating materials, and the bolts should be tightened diagonally. Non-metallic gaskets generally cannot be reused, and the corrosiveness of the medium should be considered when selecting gaskets. After repair, the anticorrosion and heat preservation work can be carried out after passing the inspection.
Chemical storage tank use attention
1, for the storage of flammable gas, flammable liquid storage tank, should be equipped with the necessary fire equipment, it is strictly prohibited to smoke in the tank, open flame lighting, heating, and its ignition source into the tank.
2, Storage tanks for flammable, explosive, toxic, corrosive and other media, should strictly implement the relevant provisions of dangerous goods management.
3. The power supply of the electrical equipment related to the storage tank must be cut off before the inspection and repair of the storage tank, and the equipment handover procedures must be handled.
4. After the internal media of the storage tank is exhausted, the inlet and outlet valves should be closed or blind plates should be added to cut off the pipes and equipment connected with them, and there are obvious partition signs.
5, for the storage tank containing flammable, corrosive, toxic, or choking media, it must be replaced, neutralized, sterilized, cleaned, etc., and analyzed and tested after treatment, and the analysis results should meet the provisions of the relevant norms and standards. It is strictly prohibited to use air replacement for flammable media.
6, tank operation must be handled in the tank operation permit. If the operation is interrupted for a long time, the operation certificate in the tank should be reissued.
7, 30 minutes before entering the chemical tank to sample analysis, its oxygen content is between 18-23% (volume ratio).
8. When entering the tank to clean up toxic and corrosive residues, wear personal protective equipment.
9, need to build the scaffold and lifting device, must be solid and reliable, in the operation is strictly prohibited to throw material tools inside and outside, to ensure safe operation.
10, the tank lighting should use the voltage does not exceed 24 explosion-proof lamps.
11. When the inside of the tank is hot, the fire certificate must be applied for.
12, the tank operation must have a guardian, and have reliable contact measures.
13, at the completion of the maintenance personnel and guardianship personnel jointly check the inside and outside of the tank, it is confirmed that the guardian can close the manholes after signing the operation certificate in the tank.
14. When releasing water after pressure test, the atmosphere must be connected to prevent vacuuming.
How to choose labels for chemical drums
The first type: plastic chemical barrels. It is a plastic bucket, box, bottle or cylinder manufactured by blow molding or injection molding. The label paper attached to this kind of plastic chemical barrel is usually made of synthetic paper, which can play a waterproof role. Coated paper is not recommended, note that if it is a small caliber plastic bottle, then the requirements will be higher, because the object is curved, and the area is small, and the synthetic paper label used by the large plastic bucket is different.
The second category: metal chemical barrels. Such as oil, industrial paint. This kind of metal chemical barrel, there are PP synthetic paper labels, but also the use of PET synthetic paper labels. If there is oil on the surface of the chemical barrel, a strong adhesive oil resistance label is required.
The third type: many people think that I want to say glass barrels, in fact, it is not, chemical products will use small glass bottles, but almost no larger glass bottles, glass jars, because it is fragile. What I want to talk about is the third type of chemical barrels, which are actually chemical barrels with colorful GHS compliance labels. It could be plastic, it could be metal. I separate GHS mainly because these products are used for dangerous products, and dangerous products cannot be treated like ordinary chemical products. The color GHS qualification label has its own standard, and the specification size color is fixed, any manufacturer can not be modified at will, in addition to requiring waterproof, but also anti-sun aging, anti-acid and alkali corrosion, in the seawater environment for a long time can be displayed normally.