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The report said that excess sealant, previously used to repair a leaking joint, migrated to two steam trap valves used to drain excess condensed water, clogging them. Then, when heavy rains on the day of the event cooled the pipe causing excess condensate to collect in the steam pipe, the valves could not remove it.
Steam vapor being vented through a typical Con Edison orange and white stack on Seventh Avenue at 20th Street. Steam vapor can be caused by a leak in Con Ed's steam system or by cooler water contacting the outside of a steam pipe. [6] The vapor is often vented out through 10-foot (3.0 m) orange-and-white funnels in the street, known as stacks.
A steam pipe explosion in New York City's Flatiron District on Thursday morning sent steam spewing high above buildings and created a crater-like hole on 5th Avenue. The explosion, which occurred ...
Expansion joints on a steam line that have been destroyed by steam hammer. Steam hammer can occur in steam systems when some of the steam condenses into water in a horizontal section of the piping. The steam forcing the liquid water along the pipe forms a "slug" which impacts a valve of pipe fitting, creating a loud hammering noise and high ...
The sudden dispersion and projection of the water in the boiler against the bounding surfaces of the boiler is the great cause of the violence of the results: the dispersion, being caused by the momentary generation of steam throughout the mass of the water, and in its efforts to escape, it carries the water before it, and the combined momentum ...
A gland is a general type of stuffing box, used to seal a rotating or reciprocating shaft against a fluid. The most common example is in the head of a tap where the gland is usually packed with string which has been soaked in tallow or similar grease.
By 2012, corrosion leaks had only occurred in two large pipelines worldwide. Leaks due to military-type acts and mishaps were considered "very unlikely". The largest leak in the analysis was defined as a "full-bore rupture (>80 mm [3.1 in])", for example from a sinking ship hitting the pipeline. Such an unlikely large leak from 54 metres (177 ...
Hence designers endeavor to give the steam-handling components of the system as much strength as possible to maintain integrity. Special methods of coupling steam pipes together are used to prevent leaks, with very high pressure systems employing welded joints to avoided leakage problems with threaded or gasketed connections.
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