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Tag: Permanent

Heat Exchanger Shielding – Permanent Installation

March 29, 2021

As part of a long-term dose reduction plan, Ameren Callaway sought to install permanent shielding around one of their regen heat exchangers. The intention was to replace the dozens of lead wool blankets used as temporary shielding, and more importantly, eliminate the time and dose costs associated with installing and uninstalling the temporary shielding package. Working […]

Permanent Pipe Shielding for Davis-Besse

November 17, 2020

NPO was brought on to provide shielding for Mechanical Penetrations Room No. 1 at Davis-Besse. This room featured a variety of pipe runs with many valves, bends, and reductions throughout as well as many hot spots. Using a combination of drawing information and practical measurements taken on site, NPO provided a shielding package using T-Flex […]

RHR Line Permanent Shielding

June 27, 2019

First Energy’s Perry Nuclear Generating Station wanted to improve the shielding on their RHR line. Instead spending time and dose to cover the line with temporary lead blanket shielding every outage, Perry sought to make the shielding permanent. They contacted NPO and we got to work on a design that is quick to install, seismically […]