Pipeline Injection Study Sample Clauses

Pipeline Injection Study. A total of five irrigation pipelines within three irrigation districts were used to test the injection of soluble KCl into pipelines to achieve a target concentration of 100 mg L-1 K+. Three pipelines (Pipelines A, B, C) in the EID, one pipeline (Pipeline D) in the Taber Irrigation District (TID), and one pipeline (Pipeline E) in the St. Xxxx River Irrigation District (SMRID) were used in the study (Table 1; Figure 1).

Pipeline Injection Study. Potassium Chloride Injection and Purging. The injection of the KCl stock solution was carried out successfully at all five pipeline trials. The efforts required for pipeline treatment were much greater for the larger pipelines with multiple irrigation systems in terms of coordination of irrigators and the irrigation districts. For the four pipeline trials carried out in 2017, not all of the irrigation systems were used in the trials. About half the systems serviced by Pipelines B, C, and D were used, and nearly all of the systems serviced by Pipeline E were used (Table 1). There were a number of reasons why irrigators did not participate either in whole or in part. These reasons included not being interested in the project, concerns about possible effects on their crop, interference with crop management practices (e.g., pollination by bees), and unexpected last-minute changes that prevented an irrigator from operating their pivot system(s). Other factors such as limited window-of-opportunities relative to main agronomic activities, including seeding, pesticide application, and harvesting, had to be considered. The time required to inject the KCl stock solution into the pipelines varied from 1.1 to 6.1 h (Table 2). The length of time was a function of the total pipeline volume (Table 1) and the number of irrigation systems in operation at a given time. Even though Pipeline E was larger than Pipelines B and C, the time required to treat the former pipeline was about 30 to 40% less time. This was because only two to three pivot systems were operated during the Pipeline B and C trials; whereas, up to five pivots were operated at the same time during the Pipeline E trial. As a result, the flow was higher through Pipeline E. The injection of Pipeline D took about 2.3 to 3.8 times longer to inject with KCl solution than the other four pipelines (Table 2). This is mainly because Pipeline D was three to four times larger than the other three pipelines. Even though Pipeline D had a larger number of irrigation systems used in the trial, not all of the irrigation systems were operated at the same time.