05000315/FIN-2016002-03
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Procedure Failed to Establish Two Valve Isolation Between the Reactor Coolants System And Containment Atmosphere |
| Description | The inspectors identified a finding of very low safety significance (Green) and associated NCV of TS 5.4.1, Procedures, for the licensee failing to maintain procedure 1OHP4021002001, reactor coolant system (RCS) fill and vent. When the licensee updated the procedure to Revision 42 they inadvertently omitted a step to shut valve 1RC144L3, RCS half-loop gauge glass isolation valve. Closing this valve establishes two valve isolation between American Society of Mechanical Engineers (ASME) code class 1 piping and non-code class piping. The licensee closed the valve and updated the affected procedure in response to the inspectors inquiries. The inspectors determined the issue was more than minor in accordance with IMC 0612 because, if left uncorrected the issue would have become more significant concern. Specifically, the licensee would have entered a higher operating mode without establishing the reactor coolant pressure boundary. The issue was not greater than green because actions taken by the licensee established the boundary prior to mode ascension. Therefore, the inspectors concluded the finding was of very low safety significance. The inspectors determined the issue included a cross cutting aspect of H.3, configuration management in the human performance area. For this issue, the licensee failed to update all applicable procedures following a change in methodology for filling coolant loops. |
| Site: | Cook  |
|---|---|
| Report | IR 05000315/2016002 Section 1R20 |
| Date counted | Jun 30, 2016 (2016Q2) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.2 |
| Inspectors (proximate) | B Jose J Ellegood J Havertape J Mancuso K Riemer T Go T Taylor |
| Violation of: | Technical Specification |
| CCA | H.3, Change Management |
| INPO aspect | LA.5 |
| ' | |
Finding - Cook - IR 05000315/2016002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Cook) @ 2016Q2
Self-Identified List (Cook)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||