The Under-Vessel Stair Lock is a Health Physics Engineered Barrier designed to secure and restrict access to the under-vessel area of the AP1000 reactor. This robust structure reinforces radiological boundaries and supports ALARA principles by physically deterring unauthorized entry into high-risk zones.
Key Features
Access Restriction: Prevents unauthorized or accidental access to the under-vessel area
Engineered Safety: Integrates into facility safety programs as a fixed, lockable barrier
Durable Construction: Fabricated from structural steel with a welded mesh panel
Installation Requirements
Mounting Method: Requires field welding for permanent installation of support brackets and frame
Compatibility: Custom-fitted for Vogtle Units 3 & 4 stairwell geometry
Specifications
Material: Steel frame with welded mesh
Mesh Size: 2" x 2" grid
This engineered barrier provides a high-reliability solution for reinforcing safety protocol in critical nuclear plant locations.
