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primary coolant

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Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004148
EISBN: 978-1-62708-184-9
... Abstract The components used in light water reactors (LWR) often remain in contact with the primary coolant, whose typical temperatures and pressures are highly aggressive, therefore, initiating corrosion in most of the alloys. This article describes the corrosion behavior of zirconium alloys...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002151
EISBN: 978-1-62708-188-7
... Abstract Metal is removed from the workpiece by the mechanical action of irregularly shaped abrasive grains in all grinding operations. This article discusses three primary components of grinding wheels, namely, abrasive (the cutting tool), bond (the tool holder), and porosity or air for chip...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006035
EISBN: 978-1-62708-172-6
... pressure (15 MPa, or 2200 psi) to prevent boiling. Superheated steam at approximately 340 °C (650 °F) is sent to a steam generator where it transfers heat to a secondary coolant loop that feeds a turbine/generator unit. By this arrangement, the trace radioactivity in the water is confined to the primary...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004146
EISBN: 978-1-62708-184-9
... water for both coolant and neutron moderator. In a PWR, the primary coolant loop is pressurized so the water does not achieve bulk boiling, and steam generators are used to transmit heat to a secondary coolant, which is allowed to boil to produce steam either for ship propulsion or for electricity...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003424
EISBN: 978-1-62708-195-5
..., the tank should be designed to provide a sludge and filtration system that will ensure adequate particulate-free coolant to be delivered to the cutting tool. This type of system will prevent contamination of the primary coolant delivery system of the machine and will also prevent severe corrosion...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004164
EISBN: 978-1-62708-184-9
... with automatic transmissions, is to control the temperature of the transmission fluid carried to and from an oil cooler in the radiator by oil lines connected to the transmission. The primary function of the coolant is to maintain the optimum operating temperatures of the engine by preventing the engine from...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006363
EISBN: 978-1-62708-192-4
... is rapidly heated above its boiling point due to contact with the primary shear zone. It is suggested that high-pressure coolant penetrates this barrier and is, therefore, capable of removing the heat that is generated by the cutting process. The ability to select the high-pressure coolant application point...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002192
EISBN: 978-1-62708-188-7
... are due to a combination of properties, including toughness and stringiness, abrasiveness, galling, work hardening, pyrophoricity, low modulus, high density, reactivity with coolants, reactivity with tools and grinding wheels, and toxicity. These properties vary with alloy composition and heat treatment...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004145
EISBN: 978-1-62708-184-9
... coolant around the reactor internals, the majority of currently operating designs rely on external recirculation pumps and internal jet pumps to control coolant transport and heat transfer within the core. There are differences in specific design details between the various BWR reactor manufacturers...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006577
EISBN: 978-1-62708-210-5
... iron in engine parts and in applications requiring wear resistance. The 17% nominal silicon content ( Table 1 ) provides sufficient quantities of the hard primary silicon phase to assure a high degree of wear resistance, yet little enough of this phase to minimize the casting and machining problems...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004223
EISBN: 978-1-62708-184-9
... that the primary structural materials used in the fabrication of the nuclear steam supply system—stainless steels and nickel-base alloys—were characterized by very high general corrosion resistance in high-purity, high-temperature LWR-type environments. The problem was that the “qualifying” laboratory tests did...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006578
EISBN: 978-1-62708-210-5
..., castings should have fine, uniformly dispersed primary silicon particles in a matrix of aluminum-silicon eutectic. Typical properties are summarized in Table 2 . Alloy composition limits Table 1 Alloy composition limits Element Alloy (UNS) 391.0 (A03910) A391.0 (A13910) B391.0 (A23910...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006104
EISBN: 978-1-62708-175-7
... wear. Coolants are preferred in most machining operations. Coolant pickup can be a problem. The rate of pickup is directly related to the amount of porosity. Ideally, all machining except grinding should precede deburring. Retained deburring abrasive can cause excessive tool wear. Ceramic and cubic...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003746
EISBN: 978-1-62708-177-1
..., and the amount and type of coolant used. On some specimens, surface damage near the cut is inconsequential and can be removed during subsequent grinding and polishing. The depth of damage varies with material and sectioning method ( Fig. 2 ) ( Ref 1 ). In any case, the competent metallographer develops a habit...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002191
EISBN: 978-1-62708-188-7
... be controlled, and this can be done by using a tested exhaust system when cutting the material dry or by using a coolant to contain the dust. The principal regulation on airborne beryllium as set by the American Conference of Governmental Industrial Hygienists is that the in-plant atmospheric concentration...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003189
EISBN: 978-1-62708-199-3
... and/or other materials dissolved in water and containing no mineral oil. All of these fluids are coolants; some are also lubricants. Chemical agents that go into these fluids include amines and nitrites (the use of nitrites is prohibited in some countries due to health hazards) for corrosion inhibitors...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003540
EISBN: 978-1-62708-180-1
... 21 m (68 ft) high with a steam drum diameter of 6 m (20 ft). Hot reactor coolant from the reactor vessel enters the steam generators through a 107 cm (42 in.) inlet nozzle in the primary head. The reactor coolant flows through the U-tubes, where it gives up heat to the secondary coolant at the shell...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001484
EISBN: 978-1-62708-173-3
...: A torch designed for either manual or mechanized operation Torch leads that carry the electric power, gas, and coolant to the torch A coolant system for the torch A power supply that provides the proper current and voltage for the plasma arc A manifold system for combining power, gas...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006494
EISBN: 978-1-62708-207-5
... such as copper, which promotes and controls the formation of short, segmented chips in ductile aluminum alloys. Alloying with 5 to 20% Si increases the amount of second-phase particles (i.e., primary silicon particles and aluminum-silicon eutectic dendrites), which nucleate microvoids during machining...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
... of 6 m (20 ft). Hot reactor coolant from the reactor vessel enters the steam generators through a 107 cm (42 in.) inlet nozzle in the primary head. The reactor coolant flows through the U-tubes, where it gives up heat to the secondary coolant at the shell side, to the outlet side of the primary head...