Introduction to EN 14470-1 (Safety Standard for Storage Chemicals)

Chemicals are commonly used in factories, laboratories, warehouses, research institutes, and medical institutions, especially for hazardous chemicals such as flammable, explosive, toxic, harmful, and corrosive. These products are necessary for work and work. Great safety hazards in the workplace. At 11 o'clock on the evening of August 12, 2015, a fire broke out in the dangerous goods dumping of Ruihai Logistics in Tianjin Binhai New Area. In the process of extinguishing the fire, a large explosion occurred on the scene, causing huge loss of personnel and property. In order to prevent such accidents, many foreign countries have established strict safety standards and developed and manufactured various equipment to reduce accidents caused by chemicals.

What is the EN 14470-1 standard?

EN 14470-1 is a safety standard for storing chemicals that was established in Europe in April 2004. Most of the domestic people understand the FM safety certification. There are very few people who know about the EN 14470-1 standard. In fact, the EN 14470-1 standard is much higher than the FM standard.

The EN 14470-1 standard contains three main safety basic requirements:

Reduce the fire caused by chemicals stored in safety cabinets and improve the protection of these materials in the event of a fire. The latter thus sets a refractory time (FR, in minutes);

Reduce chemical gas emissions into the environment;

Keep chemical gas leaking inside the cabinet.

EN14470-1 contains 4 categories - flame retardant time of 15, 30, 60 and 90 minutes - respectively to meet the different needs of EU member states. This standard is not fully acceptable to every Member State because the new standard does not replace existing national regulations for the handling of flammable liquids in certain EU Member States. For example, in Germany, they do not accept safety cabinets with a flame retardancy of 15 minutes because they do not allow violations of existing operational safety regulations (BetrSichV) and Appendix L for the Flammable Liquid Technical Regulations (TRbF).

Main requirements:

Fire performance

In the event of a fire, it must be ensured that the chemicals stored in the safety cabinet do not pose additional risks and prevent the spread of the fire within not less than 15 minutes.

The EN 14470-1 safety cabinets are classified according to their fire resistance:

Type 15 - The safety of the safety cabinet is not less than 15 minutes;
Type 30 - The safety of the safety cabinet is not less than 30 minutes;
Type 60 - The safety of the safety cabinet is not less than 60 minutes;
Type 90 - The safety of the safety cabinet is not less than 90 minutes;

Users can choose the appropriate safety cabinet according to the type of chemicals stored.

2. Anti-leakage pool

Safety cabinets need to be equipped with a leaking pool, which should be installed at the lowest level of the safety cabinet. Leak pool size:

1. Not less than 10% of the total capacity of the container stored in the safety cabinet;
2. Not less than 110% of the largest single container volume stored, which one is larger.

3. Structure

Both the cabinet and the door panel are double-layered with a thermal insulation layer in the middle, and the thickness of each wall is the same. The cabinet is made of steel plate structure, externally sprayed with epoxy resin surface treatment, continuous non-sparking hinge, ensuring that the cabinet door is opened and closed smoothly and safely, without screw holes, all welded structure, and higher safety. Special heat-sensitive materials are provided at the joints and all joints. When the indoor temperature rises to 70 °C, it will automatically expand and fill the gap to ensure that the interior of the cabinet is sealed. The hot melt device is activated when the room temperature rises to 50 ° C, and the door is automatically released. An electrostatic grounded conductive port is provided for easy connection to an electrostatic grounding conductor. The top of the cabinet is provided with an air outlet, and an air filter unit and a non-sparking explosion-proof fan are optional, which are connected to the ventilation system.

4. Marking and labeling

The cabinet must be labeled with a warning label and the label specification must comply with the ISO 3864 standard.
Such as:
“Be careful of fire prevention”, “Prohibition of open flames and smoking”, etc.;
Fire resistance, in minutes, for example: 15, 30, 60 or 90;
It is recommended that the door must be kept closed when not in use;
Maximum single container capacity, anti-leakage capacity;
Maximum load
Product name and/or manufacturer's trademark.

5. Maximum storage capacity

In a properly fire-resistant safety cabinet, the capacity of the flammable liquid stored shall not exceed the following requirements:

Fragile container
1.1 Extremely flammable and highly flammable chemicals not exceeding 60 litres;
1.2 generally less than 200 litres of flammable chemicals;

2. Other containers
2.1 Extremely flammable and highly flammable chemicals not exceeding 450 litres;
2.2 Generally flammable chemicals are not more than 3000 liters.

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