05000266/FIN-2014002-01
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | A Failure to Provide Sufficient Field Overlap to Ensure 100 Percent Coverage |
| Description | The inspectors identified a Green non-cited violation of 10 CFR Part 50, Appendix B, Criterion IX, Control of Special Processes, for a failure to provide sufficient magnetic field overlap to ensure 100 percent coverage while performing a magnetic particle examination (MT) on a steam generator feedwater nozzle weld. The examiner reexamined the area to meet the Code coverage and entered the issue into its Corrective Action Program (CAP) as action request (AR) 01951316. The inspectors determined that this issue was more than minor in accordance with IMC 0612, Appendix B, Issue Screening, dated September 7, 2012, because the inspectors answered yes to the More-than-Minor question, If left uncorrected, would the performance deficiency have the potential to lead to a more significant safety concern. Specifically, the required MT examination coverage/overlap was not verified/measured but rather assumed to be adequate by the examiner, and absent NRC intervention, would have returned the component to service for an indefinite period of service, which would have placed the nozzle/piping at increased risk for undetected cracking, leakage or component failure. In accordance with Table 2, Cornerstones Affected by Degraded Condition or Programmatic Weakness, of IMC 609, Attachment 4, Initial Characterization of Findings, issued June 19, 2012, the inspectors checked the box under the Initiating Events Cornerstone because leakage at this feedwater piping could be a transient initiator contributor. The inspectors determined this finding was of very low safety significance (Green) based on answering no to the questions in Part A of Exhibit 1, Initiating Events Screening Questions, in IMC 0609, Attachment A, The Significance Determination Process for Findings At-Power, issued on June 19, 2012. Specifically, the inspectors answered no to the screening question, Did the finding cause a reactor trip AND the loss of mitigation equipment relied upon to transition the plant from the onset of the trip to a stable shutdown condition (e.g., loss of condenser, loss of feedwater). The inspectors answered no to this question because the examiner re-examined the area of incomplete coverage and did not identify rejectable flaws. The inspectors determined that the primary cause of the failure to ensure sufficient field overlap while performing a MT examination was related to the cross-cutting component of Human Performance, Field Presence, because the licensee failed to provide oversight of work activities; including contractors and supplemental personnel. Specifically, proper oversight at the pre-job brief would have ensured the issue of overlap was discussed and understood. The inspectors determined that proper oversight at the pre-job brief could have ensured the issue of overlap was discussed and understood. Additionally, good direct oversight of the test could have provided the ability to reinforce the correct method of performing the test as well as enabling the site to discover the error instead of the inspector identifying the problem [H.2]. |
| Site: | Point Beach  |
|---|---|
| Report | IR 05000266/2014002 Section 1R08 |
| Date counted | Mar 31, 2014 (2014Q1) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.08 |
| Inspectors (proximate) | B Bartlett J Cameron K Barclay R Elliott T Bilik V Myers |
| Violation of: | 10 CFR 50 Appendix B Criterion IX |
| CCA | , |
| INPO aspect | LA.2, LA.2 |
| ' | |
Finding - Point Beach - IR 05000266/2014002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Point Beach) @ 2014Q1
Self-Identified List (Point Beach)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||