Topic: Electrical Hot Shorts
Associated Circuits by Spurious
Proposed Risk-Informed Inspector Guidance for Post-Fire SSD Associated Circuit Inspections, dated March 19, 2003
The proposed guidance was
issued following the NRC workshop conducted on February 19, 2003, to discuss
risk-informing inspection of associated circuits.
1) inspectors should pay particular attention to events that could occur in the first hour,
2) inspectors should focus on conductor to conductor shorts within a multi conductor cable,
3) inspectors should assume a maximum of two concurrent spurious operations for each scenario evaluated.
Additional discussion is included relative to credible fire scenarios, cable failure modes, thermoplastic and thermoset cable attributes