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A blowout preventer (BOP) (pronounced B-O-P) [1] is a specialized valve or similar mechanical device, used to seal, control and monitor oil and gas wells to prevent blowouts, the uncontrolled release of crude oil or natural gas from a well. They are usually installed in stacks of other valves.
The Keystone-Cushing pipeline phase connected the Keystone pipeline (phase 1) in Steele City, Nebraska, south through Kansas to the oil hub and tank farm in Cushing, Oklahoma, a distance of 468 kilometres (291 mi) long. It was constructed in 2010 and went online in February 2011.
The keystone (shown in red) of an arch Dropped keystone at Colditz Castle. A keystone (or capstone) is the wedge-shaped stone at the apex of a masonry arch or typically round-shaped one at the apex of a vault. In both cases it is the final piece placed during construction and locks all the stones into position, allowing the arch or vault to ...
Springdale is a city in Washington and Benton counties in the U.S. state of Arkansas. The city had a population of 84,161 at the 2020 census, making it the fourth-most populous city in Arkansas . [ 7 ]
Highway 612, known as the Springdale Northern Bypass, is the temporary designation of the future U.S. Route 412 (US 412) bypass around Springdale in the U.S. state of Arkansas. It currently consists of a four-lane freeway from a temporary at-grade intersection with Highway 112 in Springdale to an interchange with Interstate 49 (I-49) in Springdale.
In mechanical engineering, a face seal is a seal in which the sealing surfaces are normal to the axis of the seal. Face seals are typically used in static applications and are used to prevent leakage in the radial direction with respect to the axis of the seal. [1] Face seals are often located in a groove or cavity on a flange. Face seals are a ...
Springdale was the lunch stop between Spokane and Northport on the SF&NRR. [7] Sometime before 1892, residents petitioned to have the town's name changed to "Springdale." While the exact reason for this is unknown, the town is built over a series of subterranean streams, many of which emerge from the ground as springs . [ 8 ]
A static hydraulic seal is located in a groove and sees no movement - only sealing within its confined space, acting like a gasket. To achieve this the gasket should be under pressure. The pressure is applied by tightening of the bolts. Examples of static seals include O-rings, flange seals, and cover seals. Dynamic