Hazardous Area Zone 1 & Zone 2 ATEX | Purged Panel Control Systems
Purged Panel Control Systems – Zone 1 & Zone 2 ATEX Certified
Purge Panels & Units
EXHEAT purged panel control solutions are engineered to the hazardous area concept of Ex p to IEC/EN60079-2. Full calculations are undertaken in-house. Where cooling systems are required, forced fan cooling systems are replaced by the use of vortex coolers.
EXHEAT has a range of purge units capable of pressurizing enclosures with a volume up to 12.7m³ without any additional calculations required. Larger systems are possible with the use of numerous purge systems and further heat dissipation calculations. Enclosures are available in stainless steel 316 or painted mild steel to the client’s specified paint system. All enclosures are rated IP66.
Purged Panel Control Systems
Purged Panel Control Systems
HAZARDOUS AREA
- ATEX Certified Ex px for Zones 1 and 21
- CSA Certified Class I and II, Division 1
- ATEX Certified Ex py and Ex pz, Zones 2 and 22
- CSA Certified Class I and II, Division 2
Ex d & Ex de flameproof concepts
Ex d – “Flameproof Enclosure” Protection EN 50018 where the potentially explosive or incendive components are contained within an enclosure into which the flammable atmosphere can enter but which will contain any resultant explosion and prevent its transmission outside the enclosure into the hazardous area. Ex de solutions combine the benefits of both the increased safety Ex e and flameproof Ex d types of protection.
explosion protection type flameproof Ex d explained
hazardous area equipment protection levels
| Ga | Gb | Gc | Da | Db | Dc | Ma | Mb |
| Zone 0 | Zone 1 | Zone 2 | Zone 20 | Zone 21 | Zone 22 | Energised | De-energised* |
- G=gas, D=dust, M=mining
- *in presence of explosive atmospheres
hazardous areas & T CLASSes
Temperature class is defined by ignition temperature – the lowest temperature at which a vapour will be ignited.
Flashpoint is the lowest temperature at which a liquid generates sufficient vapour to support ignition – this vapour could be ignited by temperature or energy (i.e. a spark).
| Temperature Class | Max. Surface Temperature |
| T1 | <450ºC – eg Acetone/Methane Gas Group IIA |
| T2 | <300ºC – eg Butane/Propane Gas Group IIA |
| T3 | <200ºC – eg Heptane/Ethylene Gas Group IIA |
| T4 | <135ºC – eg Ethyl Methyl Ether/Hydrogen Gas Group IIB |
| T5 | <100ºC |
| T6 | <85ºC |
- there is no connection between ignition energy and ignition temperature
EXHEat
T&D are Master Distributors & Stockists for EXHEAT a world leader in the design and manufacture of Hazardous Area Electrical Process Heaters & Control Systems for the global oil, gas and petrochem industries.
T&D distribute EXHEAT Electric Heaters for process flow of liquids and gases in hazardous areas (Zone 1 & Zone 2) certified to ATEX & IECEx standards.
➡ Did you know? EXHEAT FAW hazardous area air warmers provide lightweight air warming where the potentially explosive atmosphere is classified as a Zone 1 or 2 (IIA, IIB, IIC) gas group.
➡ T&D Hazardous Area Sales Team are trained and certificated according to the CompEx Scheme – a global solution for validating core competency of employees and contract staff of major users in the gas, oil and chemical industries.
T&D UK & Exports are Approved Vendors to the world’s leading oil and gas exploration companies, their EPC’s and framework suppliers.
