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Ultrapure water (UPW), high-purity water or highly purified water (HPW) is water that has been purified to uncommonly stringent specifications. Ultrapure water is a term commonly used in manufacturing to emphasize the fact that the water is treated to the highest levels of purity for all contaminant types, including organic and inorganic compounds, dissolved and particulate matter, and ...
Flow line (#28) is large diameter pipe that is attached to the bell nipple and extends to the shale shakers to facilitate the flow of drilling fluid back to the mud tanks. Goose-neck (#10) is a thick metal elbow connected to the swivel and standpipe that supports the weight of and provides a downward angle for the kelly hose to hang from.
Cross section of a vessel with a single ballast tank at the bottom. A ballast tank is a compartment within a boat, ship or other floating structure that holds water, which is used as ballast to provide hydrostatic stability for a vessel, to reduce or control buoyancy, as in a submarine, to correct trim or list, to provide a more even load distribution along the hull to reduce structural ...
Commonly used for ASME pressure vessels, these torispherical heads have a crown radius equal to the outside diameter of the head (=), and a knuckle radius equal to 6% of the outside diameter (=). The ASME design code does not allow the knuckle radius to be any less than 6% of the outside diameter.
A fusible plug operates as a safety valve when dangerous temperatures, rather than dangerous pressures, are reached in a closed vessel. In steam boilers the fusible plug is screwed into the crown sheet (the top plate) of the firebox, typically extending about 1 in (25 mm) into the water space above it. Its purpose is to act as a last-resort ...
All testees enter a pressure chamber, accompanied by the doctor, and the 'tank' is sealed. Typically, there is in the chamber a somewhat surprising object: an inflated volleyball, water polo ball or similar inflated ball. Upon sealing the tank, pressure is increased, while the testees equalise their eardrum pressure.
The first full-cycle flight [underwater at 6.5 feet (2 m) depth, airborne at 33 ft (10 m) altitude] was demonstrated on 9 June 1964. [5] Reid, his craft, and his son (the test pilot) appeared on the U.S. game show "I've Got A Secret" on March 15, 1965. In the mid 1960s, the Navy let a contract to Convair to design a submersible airplane.
35 years, 5 months and 5 days (in active service) [43] West Virginia: SSBN-736: 21 November 1983: 18 December 1987: 14 October 1989: 10 September 1990: 20 October 1990 Naval Submarine Base Kings Bay, Georgia: 34 years, 3 months and 25 days (in active service) [44] Kentucky: SSBN-737: 13 August 1985: 18 December 1987: 11 August 1990: 27 June ...