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G-code (also RS-274) is the most widely used computer numerical control (CNC) and 3D printing programming language. It is used mainly in computer-aided manufacturing to control automated machine tools, as well as for 3D-printer slicer applications. The G stands for geometry. G-code has many variants. G-code instructions are provided to a ...
The format for an M-code is the letter M followed by two to three digits; for example: [M01 Operational stop] [M02 End of Program] [M03 Start Spindle - Clockwise] [M04 Start Spindle - Counter Clockwise] [M05 Stop Spindle] [M06 Tool Change] [M07 Coolant on mist coolant] [M08 Flood coolant on] [M09 Coolant off] [M10 Chuck open] [M11 Chuck close]
Lead-bismuth eutectic. 123.5 °C. 1670 °C. A nuclear reactor coolant is a coolant in a nuclear reactor used to remove heat from the nuclear reactor core and transfer it to electrical generators and the environment . Frequently, a chain of two coolant loops are used because the primary coolant loop takes on short-term radioactivity from the ...
An LPCI is an emergency system which consists of a pump that injects a coolant into the reactor vessel once it has been depressurized. In some nuclear power plants an LPCI is a mode of operation of a residual heat removal system, also known as an RHR or RHS but is generally called LPCI. It is also not a stand-alone valve or system.
Type ASHRAE number IUPAC chemical name Molecular formula CAS no/ blend name Atmospheric lifetime (years) Semi-empirical ODP (R-11 = 1) Net GWP 100-yr (R-744 = 1)
A loss-of-coolant accident ( LOCA) is a mode of failure for a nuclear reactor; if not managed effectively, the results of a LOCA could result in reactor core damage. Each nuclear plant's emergency core cooling system (ECCS) exists specifically to deal with a LOCA. Nuclear reactors generate heat internally; to remove this heat and convert it ...
Magnox fuel incorporated cooling fins to provide maximum heat transfer despite low operating temperatures, making it expensive to produce. While the use of uranium metal rather than oxide made reprocessing more straightforward and therefore cheaper, the need to reprocess fuel a short time after removal from the reactor meant that the fission ...
APT ( Automatically Programmed Tool) [ 1] is a high-level computer programming language most commonly used to generate instructions for numerically controlled machine tools. Douglas T. Ross [ 2] is considered by many to be the father of APT: as head of the newly created Computer Applications Group of the Servomechanisms Laboratory at MIT in ...