ML21019A064
| ML21019A064 | |
| Person / Time | |
|---|---|
| Issue date: | 01/21/2021 |
| From: | Hector Rodriguez-Luccioni NRC/NRR/DNRL/NLRP |
| To: | |
| Rodriguez-Luccioni H | |
| References | |
| Download: ML21019A064 (4) | |
Text
Extending Reactor Licenses to an Extreme TOPIC #4 Technical lssues for Electrical Cables JANUARY 21, 2021 PAUL GUNTER REACTOR OVERSIGHT PROJECT BEYOND NUCLEAR
License extension age management programs for non-metallic systems and structures (electric cable and concrete)
Beyond Nuclear maintains that projecting age management programs for safety-critical systems and structures out to 100-year begins with observing and assessing the foundation for assuring safety margins during the initial (40-60 years) and subsequent license renewal (60-80 years) periods.
Non-metallic concrete and electric cable These long-lived components, broadly divided into concrete and electrical cables, are generally difficult (if not impossible) to replace and would require a significant investment if across-the-board replacement is considered. As a result, recent assessments such as the EMDA have included a significant emphasis on identifying knowledge gaps related to these long-lived non-metallic components (Bernstein et al.
2014; Graves et al. 2014).
Non-metallic concrete and electric cable PNNL-27120 Rev. 1 deletes finding that, concrete and electrical cables, are generally difficult (if not impossible) to replace...
PNNL-27120 Rev. 1 deletes finding that, assessments such as the EMDA have included a significant emphasis on identifying knowledge gaps related to these long-lived non-metallic components.
PNNL-27120 Rev.1, Table 1, does however maintain that strategic harvesting priority of electric cable is High that Needs input from utilities