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Tag: Custom

Custom Dry Cask T-Flex Shielding

As Dry Fuel Campaign preparation is ongoing at many sites, we would like to share a successful campaign story. In 2025, the NPO Team designed and fabricated custom Dry Cask T-Flex lid shielding for St. Lucie. The custom design, shown below, consisted of a 41-piece T-Flex Boron and Bismuth shielding with integrated stainless-steel handles. This […]

Low Dose Waiting Area Shield Booth

Bruce Power collaborated with NPO to design a custom Low Dose Waiting Area (LDWA) Shield Booth to assist with reducing worker exposure leading up to a Major Component Refurbishment (MCR) project. The lead-in phase of the MCR project includes activities such as fuel removal, water removal from the primary heat transport system and moderator system, […]

Millstone Hot Spot Shielding

In 2025, Millstone Power Station faced a persistent dose rate challenge at a 45° elbow hot spot, where dose rates exceeded 20 Rem/hr. The existing temporary solution shielding blankets wrapped around the pipe were both visually unappealing and did not provide sufficient attenuation. Positioned overhead, the source posed unnecessary exposure to personnel working in the […]

Rad Shipping Containers

NPO and Eichrom teamed up to launch a Rad Shipping System product for the radiopharmaceutical industry.  We worked closely with PET shipping experts to develop something that meets this industry’s unique needs.  Our emphasis was on durability, optimized shielding, hygienic, minimized footprint, ergonomic, and smooth operation.  Today our systems are used throughout the US. 10-30 […]

Oconee Heat Exchanger Skid Shielding

BEFORE AFTER Oconee Nuclear Station contacted NPO to develop a permanent shielding solution for the Supplemental Spent Fuel Cooling Heat Exchanger. The heat exchanger is located inside the truck bay with one side exposed to the main truck bay door at the Radiologically Controlled Area (RCA) boundary. The ALARA planners at Oconee wanted a permanent […]

Browns Ferry 360-Inspection Platform

Browns Ferry needed durable and effective floor shielding for the trough of their 360 cavity inspection platform. Like with most floor shielding applications, T-Flex® Bismuth was chosen because of its great attenuation properties relative to its cost. On top of the Bismuth shielding was a yellow slip-resistant tread surface to ensure workers would be able […]

Custom Fit Meter Shielding

Some shielding applications require a precise fit in order to shield effectively. The meter of this instrument was a streaming source for the workers operating it. To fit the area, NPO used drawings of the steel housing and designed T-Flex Tungsten shielding that fit snuggly around the meter. 3D printed molds were used to create […]

Vogtle Reactor Head Shielding

In 2021, Vogtle reached out to NPO to help develop a new shielding package for around the reactor head. Their current system consisted of two rings: one under the head, and one around the outside of the head. Each of these shield rings used 1’ x 6’ (305 mm x 1829 mm) 60 lb (27.2 […]

Pressurizer Spray Line Shielding

  South Texas Project required new shielding for a section of the pressurizer spray line. Though the area looks small, the total shield weight was around 850 lb (386 kg). This was due to the 6.5″ (165 mm) diameter of the pipe and the 1.5″ (38 mm) thick shielding pieces. But despite the size and […]

Heat Exchanger Shielding – Permanent Installation

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 […]
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NPO has supplied products and services since 1976 that address ALARA needs worldwide in the areas of radiation shielding and contamination control.

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