Home › Forums › Coking › Technical › Heaters & Furnaces › Explosion door justification This topic contains 1 reply, has 2 voices, and was last updated by Lucibar Davalillo 13 years, 8 months ago. Author Posts March 20, 2009 at 6:26 am #3163 inshansreParticipant Why some coker heaters are provided with explosion door and some are not? Why vortex type flowmeters are preferred for velocity injection media in coker heaters? March 20, 2009 at 7:50 am #6194 Lucibar DavalilloParticipant Explosion doors are required for safety reasons; it will minimize the impact of an explosion effect by allowing expansion waves going up rather than blasting everybody underneath around the heater. Vortex meters are more accurate for wide range requirements, like the ones for heaters pass steam velocity. Author Posts You must be logged in to reply to this topic.