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What’s the most difficult question you’ve been asked as a maintenance instructor?
Blye Widmar
"Where are the prints?!"
This was the final question in an onslaught of verbal feedback, comments, and critiques I received from my students back in 2019. I had two years of instructor experience and was teaching a class that had been meticulously rehearsed in preparation for an accreditation visit. I knew the training material well and transferred that knowledge effectively enough for all the students to pass the class. As we wrapped up, I asked the students how they felt about my first big system-level class, and they did not hold back.
“Why was the exam from memory when we don’t work from memory in the plant?” “Why didn’t we refer to the vendor documents?” “Why didn’t we practice more on the mock-up?” And so on.
Yukiko Hanzawa, Daisuke Hiroishi, Chihiro Matsuura, Kenkichi Ishigure, Masashi Nagao, Masashi Haginuma
Nuclear Science and Engineering | Volume 127 | Number 3 | November 1997 | Pages 292-299
Technical Paper | doi.org/10.13182/NSE97-03
Articles are hosted by Taylor and Francis Online.
Hydrolysis constants of the zinc ion were measured at 25, 50, 75, 185, 200, and 225°C through the direct measurement of pH using pH sensors, especially of the yttria-stabilized zirconia membrane-type in the case of high temperatures over 185°C, and evaluation was done on the temperature dependence of the hydrolysis constants of the zinc ion. Solubilities of zinc oxide in pure oxygenated water were measured at 150, 200, and 250°C. Equilibrium constants of zinc oxide dissolution and the values of Gf0(Zn2+) at each temperature were estimated by thermodynamic analysis applying the estimated hydrolysis constants to the solubility data of ZnO.