Research attachments captured in this report include:
• A Plant Protection System (PPS)
platform and application functional requirements baseline. The envisioned PPS
design concept is a common, safety-related, replacement digital platform that
implements the existing functions of first-echelon, safety-related BWR systems
• A non-safety related
(NSR) platform requirements and application requirements baseline for a BWR
anticipated transient without scram [ATWS] Mitigation System. ATWS functionality as well as any necessary
diverse actuation functionality to address PPS common cause failure is
envisioned to be implemented using this NSR platform.
• A License Amendment Request (LAR)
Framework Document. This research provides a vendor-independent LAR Framework
Document created in a format consistent with the DI&C-ISG-06, Revision 2
Alternate Review process. Informed by the functional requirements baselines,
the LAR Framework Document provides notional architectures and design
attributes directed toward an advanced new state.
The technical content of these
lengthy attachments based on the Limerick Generating Station is summarized in
report INL/LTD-20-58490 that also explains how they were developed. This research product was produced by MPR
Associates, Inc., in collaboration with Exelon and LWRS researchers.
Report INL/LTD-20-58490 is
currently not publicly releasable. It is expected that this document will be
released with a revised number in late 2020 or early 2021.