A flameproof enclosure’s effectiveness stems from its ability to contain flames within, ເຖິງແມ່ນວ່າການລະເບີດເກີດຂື້ນພາຍໃນທໍ່ອຸປະກອນໄຟຟ້າ. ການບັນຈຸນີ້ແມ່ນຮັບປະກັນໂດຍການປ້ອງກັນບໍ່ໃຫ້ flame ຫນີຜ່ານພື້ນຜິວຮ່ວມກັນຕ່າງໆ.
ການປະຕິບັດຕາມມາດຕະຖານສະເພາະກ່ຽວກັບຊ່ອງຫວ່າງ, ຄວາມຍາວ, and surface roughness of these joints is crucial. These gaps not only extinguish the flames but also cool them effectively. They reduce the temperature of the flames passing through to a level insufficient for igniting any ລະເບີດ mixtures that may be present outside the enclosure.