The operator of safety cabinets as per DIN EN 14470, part 1 is responsible for their proper use. The corresponding requirements are covered in the TRGS 510, annex 1 and represent the basic safety requirements for operating safety cabinets for the storage of flammable liquids. 1. Fire resistance capability: Safety cabinets within the meaning of the TRGS 510 are particular devices with a fire resistance capability of > 90 minutes (as per DIN EN 14470-1) - technological state-of-the-art in Germany. In the case of fire they ensure sufficient time for escape and rescue (requirement as per DIN EN 14470-1). Safety cabinets with a fire resistance of less than 90 minutes (at least 30 minutes) may be used only to a limited extent (see page 100). 2. Installation and operation: … to protect employees and third parties, in particular from fire and explosion hazards. 3. Sump capacity: Each cabinet has to be equipped with a base sump tray acc. to the requirements of the StawaR, which has to contain at least 10% of the total storage volume of all storage containers and / or 110% of the largest container. 4. Self-closing doors: Doors of safety cabinets as per DIN EN 14470-1 are fundamentally self-closing. All storeLAB® safety cabinets are equipped with a hold-open device (doors remain open during operation); this ensures safe operation, loading and removal. A thermal mechanism automatically closes the doors at a max. room temperature of 50°C. 5. Ventilation: With forced ventilation: • Operation of safety cabinets have to ensure that air inlet and outlet system work constantly effective; the rate of air exchange when cabinet is closed has to be at least 10 times per hour. Herewith, the occurrence of a hazardous explosive atmospheres inside the cabinet is going to be avoided in normal operation. • Ventilation has to be effective immediately above the base sump tray of the cabinet. • The ventilation system has to discharge into the atmosphere at a non-hazardous location. • Air inlet and outlet opening has to be automatically sealed at a max. temperature of 70°C (+/- 10°C). Without technical-forced ventilation: • Avoidance of electrostatic charges - the cabinet has to be grounded. 6. Operation: • Flammable liquids do not have to be stored together with hazardous substances which may lead to fires, e.g. self-reactive or pyrophoric substances. • Hazardous substances with an ignition temperature below 200 °C (e.g. sulfur carbon) and hazardous substances classified with R12 (highly flammable) or H224 (extremely flammable) may only be stored in ventilated safety cabinets type 90 (DIN EN 14470-1). 7. Ex-zones: The employer has to determine whether ex zones are to be defined in a hazard assessment. DGUV rule 113-001, provides information on this. For example, the following requirements apply to a non-ventilated safety cabinet: - Zone 1 inside of the cabinet - Zone 2 around the cabinet in a radius of 2.5 m and up to a height of 0.5 m above the floor level 99 HAZARDOUS SUBSTANCES CABINETS - TRGS 510 ANNEX 1 PRACTICAL INFORMATION 6 DIBt Berlin steel troughs guidelines TüV-Nord systems MVV TB Nr. C2.15.12
RkJQdWJsaXNoZXIy NzgwNTU=