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Fusion Science and Technology
Penfield and Enos: Outage planning in the COVID-19 era
Energy Harbor’s Beaver Valley plant, located about 34 miles northwest of Pittsburgh, Pa., was one of many nuclear sites preparing for a scheduled outage as the coronavirus pandemic intensified in March. The baseline objective of any planned outage—to complete refueling on time and get back to producing power—was complicated by the need to prevent the transmission of COVID-19.
While over 200 of the plant’s 850 staff members worked from home to support the outage, about 800 contractors were brought in for jobs that could only be done on-site. Nuclear News Staff Writer Susan Gallier talked with Beaver Valley Site Vice President Rod Penfield and General Plant Manager Matt Enos about the planning and communication required.
Beaver Valley can look forward to several more outages in the future, now that plans to shut down the two Westinghouse pressurized water reactors, each rated at about 960 MWe, were reversed in March. “The deactivation announcement happened in the middle of all our planning,” Enos said. “It’s a shame we haven’t had a chance to get together as a large group and celebrate that yet.”
While the focus remains on safe pandemic operations, the site now has two causes for celebration: an outage success and a long future ahead.
M. Oyaidzu, K. Isobe, T. Hayashi
Fusion Science and Technology | Volume 67 | Number 3 | April 2015 | Pages 519-522
Proceedings of TRITIUM 2013 | dx.doi.org/10.13182/FST14-T69
Articles are hosted by Taylor and Francis Online.
The effects of tritium on the corrosion behavior of chromium were investigated in the present study, since it was suggested in the previous studies that the elution of chromium, which is one of the main constituent elements of passive layer of SUS 304 stainless steel, during passivation through further oxidation induced by oxidative radiolysis products would be the key reaction for the enhancement of the corrosion of SUS304 stainless steel induced by tritium. As the experimental results of the dependence of both dissolved oxygen and tritium concentration on the anodic behavior of chromium, it was found that the self-passivation of chromium induced by dissolved oxygen was inhibited in the tritiated solution, as found in the previous studies for SUS304 stainless steel. Therefore, it was considered that the elution of chromium by highly oxidative radiolysis products would induce a passivation inhibitory effect onto SUS304 stainless steel in a tritiated solution, resulting in an enhancement of the corrosion.