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The Pressure Equipment Directive (PED) 2014/68/EU (formerly 97/23/EC) [1] of the EU sets out the standards for the design and fabrication of pressure equipment ("pressure equipment" means steam boilers, pressure vessels, piping, safety valves and other components and assemblies subject to pressure loading) generally over one liter in volume and having a maximum pressure more than 0.5 bar gauge.
Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...
DVT – differential valve tool (for cementing multiple stages) DWOP – drilling well on paper (a theoretical exercise conducted involving the service-provider managers) DWQL – dual-water quicklook log
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 ...
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[23] [24] Southwest Airlines is the launch customer of the 737 MAX with a firm order of 150 aircraft. [25] The list price is US$14.5 million [26] for a LEAP-1A, and US$14.5 million for a LEAP-1B. [27] CFM International offers rate-per-flight-hour support agreements (also known as "power by the hour" agreements) for the engine.
Internationally the ISO sizes [6] are used with 14/23, 19/26 and 24/29 very common in research laboratories, with 24/29 the most common. In the US the ASTM sizes [7] (equal to the now obsolete Commercial Standard 21) are used with common sizes being 14/20, 19/22, 24/40 and somewhat 29/42. In the US 24/40 is most common.
SG is the specific gravity of the fluid (for water = 1), ΔP is the pressure drop across the valve (expressed in psi). In more practical terms, the flow coefficient C v is the volume (in US gallons) of water at 60 °F (16 °C) that will flow per minute through a valve with a pressure drop of 1 psi (6.9 kPa) across the valve.