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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 ...
The process during which the pipeline is made "live" i.e. the product is put in the pipeline, is called pipeline commissioning or start-up. Despite being seen as an offshoot, or minor part of the business for the larger oil service companies, the pipeline pre-commissioning industry possesses quite a large portfolio of services including, but ...
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.
In addition, the company was fined $3.7 million by the United States Department of Transportation due to 24 violations in pipeline safety regulation. [21] Under its agreement with the federal government, Enbridge was required to hold community open houses along pipeline routes. [22] By 2014, the cost of cleanup to the company totaled to $1.21 ...
On March 23, 1994, during the Edison, New Jersey, natural gas explosion, a 36 inch diameter section of pipeline exploded, destroying numerous apartments nearby. [9] [10] On February 21, 1986, near Lancaster, Kentucky, a 30-inch diameter Texas Eastern Transmission Pipeline gas pipeline ruptured due to corrosion. Three people had serious burns ...
Intensive pig farming, also known as pig factory farming, is the primary method of pig production, in which grower pigs are housed indoors in group-housing or straw-lined sheds, whilst pregnant sows are housed in gestation crates or pens and give birth in farrowing crates.