05000250/FIN-2009003-07
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Finding | |
|---|---|
| Title | Failure to Implement TS Requirements Regarding Structural Integrity of Code Class 2 Main Steam Isolation Components |
| Description | The inspectors identified a Non-cited violation of TS 3.4.10 requirements on Unit3 regarding required components, when plant operation continued although a structural flaw in Class 2 main steam isolation valve steam trap piping had been identified. As a result of using an incorrect drawing in assessing the leak, plant operation continued although a plant shutdown should have been initiated. The licensee documented this in CR 2009-15284.The finding was more than minor because it affected the RCS equipment and barrier performance attribute of the Barrier Integrity cornerstone and the un-isolable through wall leak challenged the integrity of the main steam system for isolating steam generator tube ruptures. Using Manual Chapter 0609, Attachment 0609.04, Phase 1 screening, this finding was determined to be of very low safety significance because all containment barrier characterization answers marked as No. The cross-cutting element of Human Performance, Decision Making, Conservative Assumptions & Safe Actions (H.1 (b)) was affected when the licensee did not use conservative assumptions in evaluating a Class 2component flaw and its TS implications, and did not demonstrate that continued operation with the crack was safe in order to proceed |
| Site: | Turkey Point  |
|---|---|
| Report | IR 05000250/2009003 Section 1R20 |
| Date counted | Jun 30, 2009 (2009Q2) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.2 |
| Inspectors (proximate) | J Uribe T Hoeg M Barillas J Stewart M Sykes |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
| ' | |
Finding - Turkey Point - IR 05000250/2009003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Turkey Point) @ 2009Q2
Self-Identified List (Turkey Point)
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