What does “active storage” mean and how is it different from “passive storage”?
Passive storage is the storage of flammable liquids in containers that are securely sealed and that are not filled or disposed of in the store or opened for any other purposes.
Active storage is the storage of flammable liquids in non-stationary vessels that are used at their storage location as stationary removal or collection containers or opened for other purposes.
Does a safety storage cabinet need to be operated with an industrial exhaust system?
If filling or transfer is carried out on the safety storage cabinet (= active storage), operation without an industrial exhaust system is not permissible. For storage of sealed containers (passive storage), operation without an industrial exhaust system is permitted provided the following requirements for the containers to be stored are satisfied:
This must be documented in the explosion protection document, and the resulting ex-zones around the safety storage cabinet must be maintained:
For passive storage, operation with an industrial exhaust system with a minimum of 10-fold continuous air exchange per hour is therefore advisable. In this case, no ex-zones are assigned to the cabinet.
What rate of air exchange must the safety storage cabinet be operated with?
The air exchange rate is specified by the operator as part of the risk assessment for the workplace. Generally accepted values can be used as the basis for determining the rate:
For passive storage of flammable liquids, at least a 10-fold air exchange per hour is recommended to avoid the formation of an ex-zone. A higher rate of air exchange may be necessary to reduce odours.
For active storage of flammable liquids, the safety storage cabinet must be operated with an air exchange rate of at least 21 m³/h and the ventilation function must be monitored.
Flammable gases should be stored with at least a 10-fold air exchange per hour, and toxic gases with at least a 120-fold air exchange per hour.
Does a safety storage cabinet need to be connected to an earthing system?
Safety storage cabinets without industrial ventilation and safety storage cabinets for active storage must be earthed by equipotential bonding to avoid ignition hazards.
May a fire-resistant safety storage cabinet also be set up outdoors?
A fire-resistant safety storage cabinet, e.g., Type 90 or Type G90, is not suitable for outdoor use. The safety storage cabinet must be operated inside a building, protected from moisture and within a temperature range between -5 °C and 45 °C.
We offer alternative solutions for storing hazardous substances outside of buildings, such as safety storage containers.
Is modification of a safety storage cabinet permitted?
DÜPERTHAL safety storage cabinets have been type-tested and certified accordingly. Any modification will result in the loss of their TÜV certificate, and may also impair their function. Please refer to your personal contact person at DÜPERTHAL to discuss your storage situation and find the best possible solution for you.
Is it possible to convert a safety storage cabinet for storing pressurised gas cylinders into a safety storage cabinet for storing flammable liquids?
No, because these two cabinet types are built according to different construction requirements and standards. Safety storage cabinets for storing pressurised gas cylinders are built, tested and certified according to DIN EN 14470-2, and safety storage cabinets for storing flammable liquids are built, tested and certified according to DIN EN 14470-1.
Is it permitted to store different hazardous substances in the safety storage cabinet?
If different hazardous substances are stored together, this may give rise to additional hazards. Therefore, it is only permissible to store hazardous substances together if their joint storage does not increase the respective risks. In general, ignitable liquids must not be stored in safety storage cabinets together with hazardous substances which are capable of causing a fire. Please compare the information in the hazardous substance data sheets with the co-storage charts for the storage categories. This information must be documented in the risk assessment. If necessary, please contact the manufacturer of the hazardous substance.
Is it permitted to store hydrogen and oxygen together in the safety storage cabinet?
Ignitable gases (hydrogen) and oxidising gases (oxygen) may be stored together in safety storage cabinets that comply with DIN EN 14470-2 with certain limitations. Please comply with the guidelines in the safety data sheets issued by the hazardous substance manufacturers and the national regulations.
Does DÜPERTHAL have distributors abroad or can I purchase my safety storage cabinet directly from DÜPERTHAL?
DÜPERTHAL has an extensive network of established distributors all over the world. Simply call us and we will be glad to advise you on the best way to place orders quickly and inexpensively from your country.
I need a technical data sheet for my safety storage cabinet.
For current cabinet models, the technical data sheet can simply be downloaded from our website: Simply enter the item number of the cabinet - which you can find on the sticker on the cabinet door - in the search box on our website and then select the “Data sheet” tab.
Where can I find the certificates for my DÜPERTHAL safety storage cabinet?
You can find a copy of the appropriate certificates in the operating instructions for your safety storage cabinet. However, for current cabinet models, the certificates can also be downloaded from our website: Simply enter the item number of the cabinet - which you can find on the sticker on the cabinet door - in the search box on our website and then select the “Certificates” tab.
I have lost my operating instructions. Who do I have to get in touch with to request new instructions?
Please contact our Service department on +49 6188 9139-157 or email@example.com.
I have lost the key to my safety storage cabinet.
Please let us know the key number for the corresponding lock. It is engraved on the locking cylinder, for example. With this key number you can order a replacement key directly from our Service department on +49 6188 9139-157 or firstname.lastname@example.org.
Do safety storage cabinets, laboratory fume hoods, filter units have to be tested/maintained regularly?
According to BetrSichV, TRGS 526, TRGS 510, ArbStättV and the maintenance interval indicated by the manufacturer, all safety-relevant features have to be checked by a qualified person once a year in accordance with TRBS 1203. In order to meet this obligation and to ensure that the safety-relevant features continue to function properly, we recommend that the safety storage cabinets be checked by one of our service technicians once a year.
Please note that in the event of damage or a fire insurers, professional associations and other auditing bodies will immediately require proof of uninterrupted annual maintenance certifications, and that a valid test label must be present.
Who do I have to contact to make an appointment for inspecting my safety storage cabinet?
You can contact our Service department directly on +49 6188 9139-166 or email@example.com.
My DÜPERTHAL safety storage cabinet won't close properly any more.
Please make sure that the cabinet is aligned correctly. If the problem persists, please contact our Service department directly on +49 6188 9139-166 or firstname.lastname@example.org.
The doors of my DÜPERTHAL safety storage cabinet don't stay open any more.
Please contact our Service department directly on +49 6188 9139-166 or email@example.com.
How do I check or replace the filter in my filter unit 2.00.390-1 or 2.00.397?
This procedure is explained in detail in the operating instructions. Please follow the steps described there.
What is the warranty period for DÜPERTHAL safety storage cabinets?
The guarantee period is defined in detail in our terms and conditions of business.
Can’t find your question? We are happy to help.
Use the free hotline, write us an e-mail, or use our contact form.