05000443/FIN-2016008-01
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Finding | |
|---|---|
| Title | Failure to Complete Operability Determinations for ASR-affected Structures |
| Description | 10 CFR 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, states, in part, that activities affecting quality shall be prescribed by documented instructions, procedures or drawings, of a type appropriate to the circumstances, and shall be accomplished in accordance with these instructions, procedures or drawings. NextEra Nuclear Fleet Administrative Procedure, EN-AA-203-1001, Operability Determinations/Functionality Assessments, identifies the responsibilities and requirements for preparation and approval of Immediate Operability Determinations (IOD) and Prompt Operability Determinations (POD) for establishing the acceptability of continued operation of a plant structure, system, or component that is suspected to be degraded or nonconforming. Per Section 2.0, Terms and Definitions, IODs are performed by the Shift Manager without delay (within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> of discovery), using best available information to make an operability declaration. Upon request of the Shift Manager, a POD is performed as a follow-up to an IOD when additional information is needed to confirm the declaration of operability. Contrary to the above, on two occasions between March 17, 2015, and January 22, 2016, Energy Seabrook, LLC (NextEra) did not accomplish an activity affecting quality in accordance with its procedure. Specifically, NextEra received information from vendors identifying non-conforming conditions adversely impacting two reinforced concrete structures at Seabrook Station, and did not complete an appropriate IOD or initiate a follow-up POD to evaluate the impact of that non-conforming condition on structural performance. In particular, 1) On March 17, 2015, NextEra entered a WJE report, entitled Condition Assessment of the Cracking in the RHR and CS Equipment Vault, into the station document tracking system and added the reports recommendations into the Corrective Action Program under Action Report (AR) 01977456, without completing an appropriate IOD or initiating a POD. The report identified structural loading (a load not considered by ACI 318-71, the design and construction code of record) due to ASR as the cause for the excessive bulk expansion and cracking of the RHR/CS Vault interior and exterior support walls; and 2) On December 2, 2015, NextEra initiated AR 02094762 to track recommendations from SG&H report entitled Evaluation and Design Confirmation of As-Deformed CEB, without completing an appropriate IOD or initiating a POD. The report also identified structural loading due to ASR as the cause for deformation of the Containment Enclosure Building (CEB), a condition not conforming with ACI 318-71. This violation is associated with a Green Significance Determination Process finding. |
| Site: | Seabrook  |
|---|---|
| Report | IR 05000443/2016008 Section 4OA2 |
| Date counted | Mar 31, 2016 (2016Q1) |
| Type: | Violation: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | A Buford B Lehman M Gray |
| Violation of: | 10 CFR 50 Appendix B Criterion V |
| INPO aspect | |
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Finding - Seabrook - IR 05000443/2016008 | |||||||||||||||||||
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Finding List (Seabrook) @ 2016Q1
Self-Identified List (Seabrook)
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