ASTM D4994-89(2014)..
ASTM D5761-96(2012)..
ASTM D5879-95(2010)..
ASTM D5886-95(2011)..
ASTM D5905-98(2013)..
ASTM D5919-96(2011)..
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ASTM D4328-08(2013)
Standard Practice for Calculation of Supersaturation of Barium Sulfate, Strontium Sulfate, and Calcium Sulfate Dihydrate (Gypsum) in Brackish Water, Seawater, and Brines
Automaticky preložený názov:
Štandardné praktiky pre výpočet presýteniu síran bárnatý, stroncium sulfát a dihydrát síranu vápenatého (sadra) v zmiešanej vode, morskej vode, a soľanky
NORMA vydaná dňa 1.6.2013
Informácie o norme:
Označenie normy: ASTM D4328-08(2013)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.6.2013
Kód tovaru: NS-26857
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D4328-08(2013) :
Keywords:
barium sulfate, brines, calcium sulfate dihydrate, strontium sulfate, ICS Number Code 13.060.30 (Sewage water)
Doplňujúce informácie
| Significance and Use | ||||||||||||||||||||
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4.1 This practice covers the mathematical calculation of the supersaturation of three principal sulfate scaling compounds found in industrial operations. Application of this standard practice to the prediction of scale formation in a given system, however, requires experience. The calculations tell the user if a water, or mixture of waters, is in a scaling mode. Whether or not scale will in fact form, how quickly it will form, where it will form, in what quantities, and what composition are subject to factors beyond the scope of this practice. However, based on how supersaturated a given water or mixture of waters is, an objective evaluation of the relative likelihood of scale formation can be made. 1.1 This practice covers the
calculation of supersaturation of barium sulfate, strontium
sulfate, and calcium sulfate dihydrate (gypsum) in brackish water,
seawater, and brines in which barium, strontium, and calcium ions
either coexist or exist individually in solution in the presence of
sulfate ions.
1.2 This practice is not applicable for calculating calcium sulfate dihydrate supersaturation if the temperatures of saline waters under investigation exceed 95°C. At temperatures above 95°C, hemianhydrate and anhydrite would be major insoluble forms. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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| 2. Referenced Documents | ||||||||||||||||||||
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Podobné normy:
Historická
1.1.2014
Historická
15.4.2012
Historická
1.5.2010
Historická
1.6.2011
Historická
1.1.2013
Historická
1.3.2011
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