Project Highlights
- Department of Energy (DOE) order 413.3B capital project finished ahead of schedule (during COVID-19).
- Completed nearly $12 M under budget.
Project Description
The project consisted of three distinct scopes of work:
- AP farm upgrades required to support installation of the Tank Side Cesium Removal (TSCR) Demonstration Project.
- Design of W-211 transfer line modifications for waste feed delivery.
- Design of a Storage pad and transfer pathway for the TSCR system ion exchange columns (IXCs).
Project Scope
Sargent & Lundy was responsible for all technical services needed to prepare design media (e.g., drawings, engineering change notices, specifications, etc.), engineering analyses, and supporting calculations to complete the design for the tank farm upgrades for this project.
The TSCR upgrades modified three AP tank farm tanks and provide the infrastructure to transfer supernatant waste to TSCR and receive TSCR plant wash returns (filter backwash, ion exchange column caustic/water rinses and sump pump liquids) and TSCR vent condensate.the decks of each foundation. The design features elements that assist BGE in overall maintenance by incorporating a davit crane to lift materials, personnel safety features, protection to prevent public access on decks, and avian mitigation.
The Design of the W-211 transfer line modifications for waste feed delivery included construction of transfer lines to connect the tank farms and the waste treatment plant (WTP) pretreatment facility for both high-level and low-level tank waste. Following completion of Project W‑211, DOE decided to build a cesium removal processing facility eliminating the need for a pretreatment facility. The change in methodology for feeding WTP with tank farm waste required several design modifications and transfer line additions.
The design of a storage pad and transfer pathway incorporated technology selected for cesium removal at the TSCR facility using non-elutable Crystalline Silicontitanate (CST) resin, contained in self-shielded IXCs. During the cesium removal process, spent IXC columns are replenished as necessary and transported via pathway from the TSCR and placed onto an interim IXC storage pad.
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