Many people think that explosion-proof cabinets are inherently explosion-proof. Some people don’t even read the instruction manual and don’t know how to use them. They just buy them for safety inspections. They don’t know that this is actually very dangerous. Most of the storage in explosion-proof cabinets is white electric oil and oil. Inflammable and explosive liquids such as fine chemicals, these dangerous chemicals are generally easy to volatilize. If the concentration of flammable and explosive gases in the explosion-proof cabinet is too large, safety accidents such as fires and explosions are very likely to occur.
It is a special equipment that can safely store thinner water, machine water, washing board water, white electric oil, alcohol, paint, gasoline, and all kinds of dangerous chemicals. It is also called chemical cabinet and fire cabinet. , Safety cabinets, flammable and combustible liquid storage cabinets, oil drum cabinets, special cabinets for hazardous chemicals, etc.
Using explosion-proof cabinets to store hazardous chemicals can effectively prevent chemical spills and prevent fire accidents;
Effective management of all kinds of dangerous goods, safety cabinets of different colors have different functions, and the chemicals that can be stored are also different. They are stored in different categories, which are clear at a glance and easy to manage;
The safe use of explosion-proof cabinets can not only protect the safety and health of the working environment, but also protect the life and property safety of employees.
In order to separate all kinds of dangerous liquids in an orderly manner, explosion-proof cabinets are subdivided into different colors and categories. For some experimenters, they don’t understand what a safety cabinet is. Based on the usage habits of various industries and related industry standards, the main points are: For the following categories, see the figure below:
1, by category
2, by color
Yellow represents flammable liquids, red represents flammable liquids, blue represents corrosive liquids, and green represents pesticides.
The choice of chemical safety cabinet can be considered from five aspects: storage container, storage capacity, safety cabinet use environment, chemical properties and management of special chemicals.
1. Storage container
According to the type of storage container and the suitability of its volume, confirm whether the chemical safety cabinet you are storing is as follows: safety cans, oil drums below 55 gallons, smaller paint cans, 4 liter bottles, spray bottles , Or smaller bottles. All kinds of storage containers must be kept tightly closed.
2. Storage capacity
Determine the capacity of the safety cabinet you need. Please choose a safety cabinet with a specific capacity that meets your needs according to the volume of the chemical container you plan to store. A safety cabinet with a larger storage capacity can provide more storage space. The conventional storage capacity of safety cabinets covers 11 categories, which are divided into 4 gallons, 12 gallons, 22 gallons, 30 gallons, 45 gallons, 54 gallons, 55 gallons, 60 gallons, 90 gallons, 110 gallons, and 115 gallons. Choose suitable models for storage capacity.
3. Use environment
Confirm the use environment of the safety cabinet, and ensure that the safety cabinet is used in the indoor horizontal interface, and the environment is far away from fire and dry and ventilated. Choose floor-standing or desktop safety cabinets, or safety storage cabinets (such as 10-gallon safety cabinets) that are used in conjunction with laboratory fume hoods according to your needs. In addition, suitable PVC pallets can be configured according to the needs of leakage prevention in the cabinet.
4. Chemical properties
Confirm the attributes of the chemicals planned to be stored, and use the color management and label management of safe storage to help you identify, manage, and distinguish various hazardous chemicals. Determine the chemical characteristics and storage requirements of the chemical substances planned to be stored in the chemical safety data sheet (MSDS), select the corresponding type of safety cabinet under the color and label management system, and classify and grade the management of the chemicals, and avoid chemical storage Fire, toxic gas reaction and explosion caused by incompatibility.
5. Management of special chemicals
For toxic and hazardous chemicals or reagents involved in inspection and testing, industrial and mining enterprises, metallurgical and chemical industries, it is necessary to use special drug safety cabinets for storage to achieve strict and safe management and control to ensure the safe use of toxic and hazardous chemicals.
6. Safe maintenance of explosion-proof cabinet
7. Exhaust
Explosion-proof safety cabinets are equipped with double exhaust ports with built-in flame arresters (with plugs), which are usually located on both sides of the cabinet, with one side high and the other low. According to relevant safety regulations, if there is no exhaust, the exhaust port should be sealed with a plug; if the safety cabinet needs to be exhausted for any reason, it should be set in accordance with the relevant safety standards, and the performance of the explosion-proof safety cabinet should not be affected.
8. Grounding
The steel safety cabinet has a built-in grounding lug, which is generally located on the right side of the bottom. For the safe storage of flammable materials, it is necessary to ground as much as possible for safety reasons. If the distribution and collection process is carried out in a safety cabinet, such as pumping from a drum or filling the drum with waste liquid through a funnel, the safety cabinet should be grounded, and the correct connection technology of the container should be used, which is very important.
1. The floor where the explosion-proof safety cabinet is placed should be level.
2. If there are multiple explosion-proof safety cabinets placed together, the distance between each cabinet should not be less than 15 cm.
3. The place where the explosion-proof safety cabinet is placed should be far away from fire sources or other heat-dissipating instruments and equipment, and also away from splashing chemical liquids or slag.
4. There is an electrostatic grounding terminal at the lower corner of the outer wall on the left side of the cabinet. After the cabinet is properly placed, an electrostatic grounding wire should be connected to timely conduct the static electricity accumulated in the cabinet.
5. The items placed on the cabinet's shelf should not exceed the load-bearing limit of the shelf. If the laminate has multiple layers, when placing items, place larger or heavier items on the lower laminate, and place smaller or lighter items on the upper laminate.
6. If the explosion-proof safety cabinet is placed in a confined narrow space, or the place where the cabinet is placed has strict restrictions on the volatilization of flammable liquids, then a ventilation system should be connected to the vent of the cabinet to eliminate the volatilization in the cabinet. Flammable liquid accumulated in the body.
7. At night or under dark conditions with insufficient light, if you need to place items in the cabinet or perform other operations, you should turn on the surrounding lights or carry an explosion-proof flashlight for operation.
8. It is strictly forbidden to light candles, alcohol lamps, or use lighters near the cabinet that may cause combustion and explosion.
9. It is strictly forbidden to smoke, throw fireworks or discard other burning objects in the place where the cabinet is stored.
10. After opening the door, pay attention to closing and locking. It is strictly forbidden to open the cabinet door for a long time to avoid the fire source from entering the cabinet.
11. Always pay attention to protect any door locks installed on the cabinet to prevent the door locks from being hit or damaged.
12. At ordinary times, pay attention to protect the cabinet to prevent collision, scratching or splashing of corrosive chemical liquids on the cabinet, so as not to damage the cabinet or damage the coating on the cabinet.
13. It is strictly forbidden to put strong corrosive chemicals in an explosion-proof safety cabinet. Strongly corrosive chemicals should not be placed in the same cabinet as flammable and combustible chemicals, and special strong corrosive chemical cabinets should be purchased for classified storage.
14. Any locking arrangement installed on the cabinet must be managed by a special person, and it is strictly forbidden to open it by non-management personnel.
15. It is recommended that the key management personnel prepare an extra set of keys in advance, in case the key is damaged or accidentally lost.
