TCD - Vent Stack and Fire Fighting (Snuffing) System
The TCD Italia Vent Stack is designed to give superior performance to the discharge into atmosphere of hydrocarbon gases.
The basic design takes into consideration the following:
- Ground level concentration of vented gases
- Toxic gases should not create a safety hazard where persons may be present.
- Spontaneous ignition due to lightning strike, mechanical percussion, electrostatic phenomena.
- Noise must be at a safe level where personnel are present.
- Thermal radiation due to spontaneous ignition should not create a safety hazard.
The vent tip can be designed for sub-sonic or sonic exit velocity. It is a good practice to design the sub-sonic vent tip for an exit velocity of the discharged hydrocarbon greater than 150 m/s.
This will ensure excellent dispersion.
The top part of the vent exit tip is machined in order to minimize any friction effects of the vented gases. The vent tip is fabricated from thick wall heat resistant alloy and it incorporates a windshield in order to minimize plume draw-down in windy conditions.
The vent can be equipped with a seal suitable to minimize the air ingress and to reduce the rate of the necessary purge flow.
Vent tips can also be provided with a special hood designed to avoid rain ingress into the stack.
The elevated vent system requires a supporting structure. The supporting structure can be guyed, free standing derrick, self-support, derrick-guyed. TCD Italia is able to offer any type of vent structures in accordance to all common European and American codes and rules,