05000254/FIN-2014002-01
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Finding | |
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| Title | Steam Dryer/Steam Separator Lifting Device Failure to Meet American National Standards Institute (ANSI) N14.6 |
| Description | The inspectors identified a finding of very low safety significance (Green) involving the licensees failure to demonstrate compliance with American National Standards Institute (ANSI) N14.6-1978, Section 3.2.1.1. Specifically, the licensee did not establish the design stress factors based on the fracture toughness characteristics of the socket pins, lock pins, and hook pins for the steam dryer/steam separator lifting device. This issue was entered into the licensees corrective action program (CAP) as Action Request (AR) 1517114, Dryer/Separator Strongback Calculation Discrepancies, dated May 23, 2013, and AR 1578475, Dryer/Separator Strongback Pin Inspection Criteria, dated October 30, 2013. The inspectors determined the finding to be more than minor because the finding was associated with the Initiating Events Cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown. Specifically, compliance with ANSI N14.6-1978, Section 3.2.1.1 is to ensure safe load handling of heavy loads over the reactor core, spent fuel, and/or safety-related systems through establishing the design based on the fracture toughness characteristics of the material. The inspectors determined the finding could be evaluated using the Significance Determination Process in accordance with IMC 0609, Significance Determination Process, Attachment 0609.04, Phase I -- Initial Screening and Characterization of Findings, Table 3. Since the finding was associated with shutdown conditions, the inspectors used IMC 0609, Appendix G, Shutdown Operations Significance Determination Process. The inspectors determined that none of the conditions constituting a loss of control were met as described in Appendix G, Attachment 1, Phase I Operational Checklists for Both PWRS and BWRS, for this finding and no Phase II or Phase III analysis was required. Specifically, the licensee provided information to inspectors that prior nondestructive examinations and inspections of the lifting device found no prior material defects. In addition, the licensee had not experienced any load drop events since placing the steam dryer/steam separator lifting device into service. The lifting device was also load tested successfully in accordance with the applicable requirements of ANSI N14.6. Therefore, the inspectors determined that this finding was of very low safety significance (Green). The inspectors did not identify a cross-cutting aspect associated with this finding because the concern was related to a design calculation from 2005, and thus was not necessarily indicative of current licensee performance. No violation of regulatory requirements is associated with this finding based on the steam dryer/steam separator lifting device being a non-safety-related structural component. |
| Site: | Quad Cities  |
|---|---|
| Report | IR 05000254/2014002 Section 1R20 |
| Date counted | Mar 31, 2014 (2014Q1) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.2 |
| Inspectors (proximate) | B Cushman B Jose C Lipa C Phillips J Bozga R Murray |
| INPO aspect | |
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Finding - Quad Cities - IR 05000254/2014002 | ||||||||||||||||||||||||||||||
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Finding List (Quad Cities) @ 2014Q1
Self-Identified List (Quad Cities)
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