main vent

main vent

The principal artery of the venting system to which vent branches may be connected; also called vent stack.

vent stack, main vent

vent stack
A vertical vent pipe installed primarily for the purpose of providing
References in periodicals archive ?
They include the impressive Royal Ascot winner Pique Sous, who is among 60 entries for the main vent - Saturday's John Smith's Northumberland Plate.
It rises through the volcano's main vent, or vertical tube that connects to the surface.
The fire in the manufacturing site's main vent and piping was caused by a faulty extractor fan.
Family and friends become the main vent for worries with work and allow us to get a sensible perspective.
Cr-diopside rich pyroclastic phase of the main vent of DO-27 ("PK"), which is
in the main vent suggests that portions of the north-eastern lobe could grade
Ground conditions are good and the single face ramp has reached the first level to access the Main Vent raise.
New micro-diamond results indicate main vent of DO-27 kimberlite may
grade predictive curves based on micro-diamond sampling of the main vent have
The drill-hole sites are being located using the ground geophysics (MaxMin and Magnetics) that has been completed over the McFaulds #3 grid The mineralized gradient (thickness and percentage various sulphides) will be noted and plotted, in an attempt to locate the main vent or source structure(s) of this new Volcanic Massive Sulphides ("VMS") target.
The central portion of the DO-27 main vent tested during the 2005 program
of a main vent and a subsidiary northeastern vent and comprises the southern