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首页> 美国政府科技报告 >DISCHARGE MEASUREMENTS USING RADIOISOTOPES AT FLATIRON AND POLE HILL POWERPLANTS
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DISCHARGE MEASUREMENTS USING RADIOISOTOPES AT FLATIRON AND POLE HILL POWERPLANTS

机译：在FLaTIRON和pOLE HILL pOWERpLaNTs使用放射性同位素进行放电测量

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Radioisotope techniques and equipment were developed to improve methods for measuring flow rate in high-head turbines and pumps. Phase V, the last of a series of field measurements, was performed at Flatiron and Pole Hill Powerplants in Colorado. Studies of 4-point injection and sampling over a mixing length of 36.5 pipe diameters of 7-ft pipe (2.13 m) showed that radiation sampling and counting techniques were satisfactory. The mixing length appeared to be short for satisfactory mixing and accurate discharge measurement. A demonstration of the techniques at Pole Hill Powerplant produced satisfactory measurements for a mixing length of 255 diameters of 8-ft (2.44 m) pipe. Discharge of 400 cfs (11.2 cms) computed by the dilution, integrated sample, and total count methods varied up to about 2%, indicating that further refinement of sampling and counting techniques will not reduce significantly the inaccuracy below the estimated probable 2 Sigma error of 1.5%.

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