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Category: Steam Generator

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 […]

Boiler Plate Shields

April 28, 2020

Inside the steam generators of CANDU nuclear power plants, a divider plate separates the hot leg from the cold leg. Dozens of bolts hold this divider plate together, and these bolts trap hot particles that are a major source of radiation during inspections. NPO designed magnetic shielding designed to fit around each bolt. Since it […]

Saint-Alban Steam Generator Shielding

June 9, 2016

EDF Saint-Alban plant, located in Saint-Maurice-l’Exil, France, collaborated with NPO Europe to address a few opportunities for shielding the steam generators during sludge lancing operations. Saint-Alban wanted to reduce shielding installation and removal time from the benchmark of 5.5 hours, reduce total project dose from 476 mRem, and remove the physical clutter of shielding/scaffolding as […]

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