Nuclear Generating Station
After the Fukushima accident, the NRC developed a three-tiered prioritization of activities to enhance U.S. reactor safety.
|Tier 1:||Near Term||11 areas Identified|
|Tier 2:||Mid Term||3 areas identified|
|Tier 3:||Longer Term||13 areas identified|
To reanalyze potential seismic effects using present- day request for information to determine if safety upgrades are needed.
A major Energy Company performed the Tier 1 Seismic Reevaluations for one of its Nuclear Plants. One area that was identified; the support buildings CMU block walls required strengthening. Various methods of reinforcement were evaluated and CFRP was the selected solution.
Seismic Upgrade using Carbon Fiber.
Seismic engineering determined the reinforcement requirements for the CMU block wall strengthening.
Testing was performed to verify material strength of CFRP samples using pull tests. These tests provided a final calibration of the CFRP design.
Five block walls were then prepped and CFRP was applied per the design documents.
Seismic compliant structures using CFRP methods and materials.
- Very cost effective.
- Simplified installation.
- No safety issues and no change orders.
- No need for an outage event to perform the work.