05000341/FIN-2017010-02
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Finding | |
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Title | Failure to Correctly Calculate the Post Accident Operating Time |
Description | Green . The inspectors identified a finding of very -low safety significance (Green) and an associated NCV of 10 CFR 50.49, Paragraph (e) (1), Environmental Qualification of Electrical Equipment Important to Safety for Nuclear Power Plants, for the licensees failure to include the correct time -dependent temperature for EQ components in their EQ Program. Specifically, the inspectors identified two examples where the licensees EQ files failed or incorrectly calculated the Loss of Coolant Accident Post Accident Operating Time for EQ components . The licensee captured the inspectors concern into their CAP as CARD 17 -24760 and 17 -24619. 3 The performance deficiency was determined to be more- than- minor because it was associated with the Mitigating Systems cornerstone attribute of design control and affected the cornerstone objective of ensuring the availability, reliability, and capability of mitigating systems to respond to initiating events to prevent undesirable consequences. The finding screened as of very -low safety significance (Green) because it did not result in the loss of operability or functionality of mitigating systems. Specifically, as an immediate corrective action, the licensee per formed a preliminary assessment and calculated the Loss of Coolant Accident Post Accident Operating Time for these two EQ components and determined that the equipment remained qualified for the environmental conditions. The finding did not have a cross -cutting aspect associated with it because it was not representative of current performance |
Site: | Fermi |
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Report | IR 05000341/2017010 Section 1R21 |
Date counted | Jun 30, 2017 (2017Q2) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.21 |
Inspectors (proximate) | A Dahbur I Khan J Robbins M Greenleaf M Jeffers |
Violation of: | 10 CFR 50.49 |
INPO aspect | |
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Finding - Fermi - IR 05000341/2017010 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Fermi) @ 2017Q2
Self-Identified List (Fermi)
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