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Hydraulically activated pipeline pigging (HAPP) is a pigging technology applied for pipeline cleaning. The basic principle is that a pressure drop is created over a by-passable pig held back against a pipeline's fluid flow. The pipeline fluid passing through the pig's cleaning head is accelerated by this pressure drop, forming strong cleaning jets.
Unlock and open door, remove pig from receiver, close and lock door. Pig receiver is then ready to receive the next pig. Pigging station. The pigging installation shown (right) is known as an Above Ground Installation (AGI). It is part of the UK's National Transmission System for natural gas. It shows two pig launcher/ receivers at the end of ...
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A trapdoor or hatch is a sliding or hinged door that is flush with the surface of a floor, ceiling, or roof. [1] It is traditionally small in size. [ 2 ] It was invented to facilitate the hoisting of grain up through mills, however, its list of uses has grown over time. [ 3 ]
The pig head was reported to Sacramento police around 7:30 a.m. on Monday, a department told USA TODAY Wednesday in an email. The incident occurred in a North Natomas neighborhood, police said.
March 29 – A road grader hit a gas pipeline near Tuttle, Oklahoma. The grader driver was burned to death. [229] April 10 – A Dow Chemical Company NGL pipeline in Amber Township, Michigan was being purged by passing a plastic pipeline pig propelled by compressed air. Iron sulfide residue inside the pipeline reacted, causing an explosion that ...
It is an offence to trap an animal on a registered trapline that does not belong to you in BC. [ 2 ] Manitoba has had registered traplines since 1940; they were brought in at that time to stop a wave of new arrivals in Northern Manitoba from trapping out an area that was already overharvested by the local, mostly First Nations , population.