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2010-03-19View Original

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This post was last edited by stronger0514 on 2010-3-23 20:58: Hydrostatic Testing: Pressure testing
Reply #22010-03-19
This post was last edited by tekchina on 2010-3-19 at 13:01. 2. The specified test pressure shall be maintained for at least one hour. The required holding time under pressure is at least one hour. 3. Demineralised water should refer to deionized water; it is somewhat different from softened water. Soft water refers to water in which the hardness (mainly referring to calcium and magnesium ions in the water) has been removed or reduced to a certain extent. During the softening process of water, only its hardness decreases, while the total amount remains unchanged. Deionized water: As the name implies, it is water from which all ions resulting from the ionization of electrolytes in water have been removed, with the exception of hydrogen ions and hydroxide ions. That is, to remove the electrolyte substances dissolved in water. Since the ions produced by the ionization of electrolytes in water increase the water’s conductivity, the purity of deionized water is naturally measured by its conductivity. Deionized water is basically produced by ion exchange. However, deionized water can contain non-electrolytes that cannot be ionized, such as ethanol. FYI
Reply #32010-03-19
1. All vessels shall be hydrostatically tested in accordance with the Code requirements after all other tests have been completed, following a procedure agreed upon by the Contractor. The phrase “following a procedure” seems to serve as an amendment to “after all other tests have been completed”. 3. Portable water should refer to potable water; brackish water is salty water, while demineralized water is water that has had its minerals removed. 4. Solid/clad: refers to single/composite materials; here, “solid” does not mean solid in the literal sense. 5. dry air: dry air
Reply #42010-03-19
1. I’m not sure about this yet; let’s all take another look. 2. It could be potable water; as for brackish water and demineralized water, let’s discuss further because there isn’t much consensus yet. 3. This translation is very good. 4. A flow of dried air? Moving dry air? Not going well!
Reply #52010-03-20
1. The English term for “deionized water” is deionized water. 2. In accordance with the \"Standard for Basic Terms in Water Supply and Drainage Design GBJ125\"... Softened water = softened water; Demineralized water = demineralized water; High-purity water = high-purity water, ultra-high purity water... Raw water = raw water, which is the water sourced from water supply locations. Surface water = surface water is water that exists on the surface of the Earth’s crust and is exposed to the atmosphere. Groundwater = ground water: Water that exists in the cracks of rocks in the Earth’s crust or in the pores of soil. Brackish water (alkaline water) = brackish water, alkaline water. It is water with a higher alkalinity than hardness, containing large amounts of neutral salts, and a pH value greater than 7. Fresh water = water with a salinity of less than 500 mg/L. Cooling water = cooling water, water used to lower the temperature of the object being cooled. Wastewater = wastewater refers to the total amount of water discharged as a result of human activities, as well as rainwater that flows over surfaces. It includes sewage, industrial wastewater, and other waters that flow into drainage pipes from initial rainfall. Sewage = wastewater; water that is contaminated as a result of domestic and industrial activities. Domestic water = water used in daily human life. The water required for everyday human activities. Process water = water required for the production process. Fire water = fire demand: the water required to extinguish a fire. Water used for flushing roads = street flushing demand; road watering refers to the water required for maintaining, cleaning, cooling, and dust removal of urban roads. Water for greening = water used for sprinkling in green belts and green areas, i.e., the water required for municipal green spaces and similar areas. . . .
Reply #62010-03-21
This post was last edited by stronger0514 on 2010-3-21 at 21:07. 2. The specified test pressure shall be maintained for at least one hour. The required holding time under pressure is at least one hour. ----- FYI from tekchina. 4. The hydrotesting water used for austenitic or duplex stainless steel or titanium vessels (whether solid or clad) must have a maximum chloride content of 30 ppm. I think the words in red should be translated as “pure titanium” or “composite”. (Please take another look.) ---FYI from niuky. 3. Brackish water; Demineralized water – purified water or water that has had minerals removed (I personally prefer the term “purified water”). ---FYI from tekchina, bamboobamboo, and niuky. 1. All vessels must undergo hydrostatic testing in accordance with the code requirements, after all other tests have been completed, following procedures agreed upon by the Contractor. All pressure vessels need to be tested under pressure as specified by the codes, and this testing can only take place after all other tests are finished, per the contractor’s guidelines. (Please take another look.) ---FYI from echommm and niuky. 6. They must be thoroughly dried out within 48 hours of drainage, using swabs or a stream of dry air at room temperature. The interior of these vessels needs to be dried completely within 48 hours, using either swabs or dry air at room temperature. (For reference only; please share your opinions.) —FYI from echommm and niuky
Reply #72010-03-21
The original poster still doesn’t understand which objects the two ‘to’s refer to. ‘To = conform to’ means to comply with or meet certain standards. Revised translation: All containers, after completing all other tests in accordance with the procedures approved by the contractor, shall undergo hydrostatic testing as required by the specifications. ______________________FYI
Reply #82010-03-21
This post was last edited by liangmaoqian on 2010-3-21 at 22:38. Demineralized water – softened water or deionized water can both be used. Below are explanations of these two terms: Softened water refers to water in which the hardness (calcium and magnesium ions) has been removed or reduced to a certain level. The water softening process only reduces hardness; all other components remain unchanged. Desalinated water refers to water in which the salts have been removed or reduced to a certain level; brackish water is water that is a mixture of fresh water and saltwater
Reply #92010-03-21
6. They shall be thoroughly dried out within 48 hours of draining, using swabs or a flow of dried air at ambient temperature. The interior of these vessels must be completely dried out over 48 hours by using dry air or swabs at room temperature. (I couldn’t find a proper translation for “swab”.) 1. All vessels shall be subjected to hydrostatic testing in accordance with the code requirements, after all other tests have been completed following the procedures agreed upon by the Contractor. Hydrostatic testing shall be carried out in compliance with the specification requirements once all other tests are finished according to the procedures set forth by the Contractor. (Is this clearer?) ) above FYI from pretty echommm.

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