Basin water chemistry

The first rack (rack 1) was immersed in the storage fuel bay in November 1996. Before its immersion, weekly monitoring of basin water chemistry had been started. The water samples were measured/analysed for their pH, conductivity, temperature and content of anions such as chloride, sulphate, nitrates and nitrite. The following analytical instruments were used to carry out these measurements  

The basin water was recirculated daily for 7 h, at a flow rate of 67 L/min. The pool water was purified in a mixed bed demineralizer with a strong acid cation exchanger and a strong base anion exchanger. 

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Records management programme. Data on basin water chemistry and the corrosion surveillance programme should be maintained at each basin site. 

The basin water chemistry was analysed using the following instruments ... 

Basin water chemistry and radioactivity monitoring showed that the basin water of the CIAE research reactor is quite good. The main parameters having a significant effect on corrosion attack are as follows ... 

Too much flow through valve Both internal pressure valves fail open Operation Excessive chlorine flow to Tower Water Basin - high chlorine level in cooling water - potential for excessive corrosion in cooling water system Rotameter Daily testing of cooling water chemistry Relief valve on Pressure check valve outlet III None... 

Water Chemistry. Sampling and analytical procedures, as well as quality control and assurance information for chemical and biological parameters, are described in detail elsewhere (e.g., 7-9). A brief summary of sampling and analytical methods is provided here. Water samples were collected biweekly during the ice-free season and every 5 weeks under the ice at depths of 0, 4, 6, 8, and 9 m in the north basin and 0, 4, and 6 m in the south basin. Water was pumped from depth by using a peristaltic pump and Tygon tubing and collected in prewashed polyethylene bottles. Alkalinity and pH were measured on unfiltered, unpreserved samples. 

Sholkovitz E. (1973) Interstitial water chemistry of the Santa Barbara basin sediment. Geochim. Cosmochim. Acta 37, 2043-2073. 

While all of these reactions are favored thermodynamically, they are almost always enzymatically catalyzed by bacteria. It has been observed from the study of pore waters in deepsea sediments (e.g., Froelich et al., 1979) and anoxic basins (e.g., Reeburgh, 1980) that there is an ordered sequence of redox reactions in which the most energetically favorable reactions occur first and the active electron acceptors do not overlap significantly. Bacteria are energy opportunists. Using estimates of the stoichiometry of the diagenesis reactions (Table 2) one can sketch the order and shape of reactant profiles actually observed in sediment pore-water chemistry... 

Astor, B., 1999, A Study Of The Effects Of Strip Mining On Stream Water Chemistry In The Black Warrior Basin Masters University Of Alabama, 92 p. 

The chemistry of lake waters is extremely variable in composition because of the diversity of the watershed lithology, the climatic water balance and the residence time of the water in the lacustrine basin. Therefore, the lake water chemistry is primarily determined by the watershed geology and atmospheric inputs (Campy and Macaire, 2003). Due to this origin, the major ions in lake waters are Ca2+, Mg2+, Na+, K+, Cl, S042, HC03 and C032. Various types... 

Since there exist no lakes with identical water chemistry, basin morphology, watershed structure, and climate, one can expect large lake-to-lake differences with respect to types and concentrations of DOM. Selected examples are given in Table 4. 

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