Holtec International has patented a container system for radioactive waste, featuring a two-part lid assembly for safe handling. The system includes a canister, confinement lid, and shielded lifting lid, with the ability to be disposed in a protective overpack for transport and storage. GlobalData’s report on Holtec International gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Holtec International, Heat exchanger brazing was a key innovation area identified from patents. Holtec International's grant share as of January 2024 was 53%. Grant share is based on the ratio of number of grants to total number of patents.

Radioactive waste containment system with detachable lid assembly

Source: United States Patent and Trademark Office (USPTO). Credit: Holtec International Inc

A recently granted patent (Publication Number: US11887744B2) discloses a radioactive waste containment system designed to securely hold radioactive waste. The system comprises an upwardly canister with an interior chamber for the waste, a lower confinement lid detachably coupled to an upper shielded lifting lid forming a self-supporting lid assembly, and an outer overpack where the canister is inserted. The lid assembly sits atop the overpack, with the shielded lifting lid engaging the annular rim of the overpack while the confinement lid does not. The system includes assembly bolts for attaching the shielded lifting lid to the confinement lid and confinement lid mounting bolts for securing the confinement lid to the canister without engaging the shielded lifting lid.

Furthermore, the patented system features a vertically adjustable basket insert within the canister to support radioactive waste cylinders. The shielded lifting lid, with a larger diameter and greater thickness than the confinement lid, includes a lifting lug for hoisting the lid assembly. The confinement lid mounting bolts are designed to have their heads recessed within the first bolt holes of the shielded lifting lid, ensuring a secure attachment to the canister. This innovative radioactive waste containment system offers a comprehensive solution for safe storage and handling of radioactive materials, with a focus on secure lid assembly and efficient waste management within the canister.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.