ENS 51134
ENS Event | |
|---|---|
01:03 Jun 7, 2015 | |
| Title | Not Meeting Technical Specifications Due to Incorrect Loading of Casks |
| Event Description | On June 6, 2015, during a review of Independent Spent Fuel Storage (ISFSI) cask loading, plant personnel discovered that for two casks, preferential loading was not used during uniform loading as required by ISFSI Technical Specification 2.1.2, Uniform and Preferential Fuel Loading.
ISFSI Technical Specification 2.1.2 requires that a preferential fuel loading configuration (i.e., that fuel assemblies with the longest cooling times shall be loaded into peripheral fuel storage locations) is used during uniform loading. Preferential loading was only partially met for two casks, designated MPC-253 and MPC-257. For these two casks, fuel assemblies with the longest cooling times were placed in the four center cask locations, which are only ones allowed for those assemblies containing control rods. Engineering has performed an evaluation and determined that the fuel casks remain in a safe and analyzed condition.' There is no adverse effect on the health and safety of the public. The NRC Resident Inspector has been informed.
A full extent of condition review has determined that 17 of the 29 loaded casks in the Diablo Canyon ISFSI prior to the 2015 campaign were found to be out of compliance with ISFSI Technical Specification 2.1.2, Uniform and Preferential Fuel Loading. The casks were preferentially loaded based on heat load vs cooling time. Engineering has performed an evaluation and determined that the fuel and casks remains in a safe and analyzed condition. There is no adverse effect on the health and safety of the public. The NRC Senior Resident Inspector has been informed. Notified R4DO (Werner). |
| Where | |
|---|---|
| Pacific Gas & Electric Co. Avila Beach, California (NRC Region 4) | |
| License number: | SNM-2511 |
| Organization: | Diablo Canyon |
| Reporting | |
| Other Unspec Reqmnt | |
| Time - Person (Reporting Time:+-1.73 h-0.0721 days <br />-0.0103 weeks <br />-0.00237 months <br />) | |
| Opened: | Jeremy Cobbs 23:19 Jun 6, 2015 |
| NRC Officer: | Richard Smith |
| Last Updated: | Jun 9, 2015 |
| 51134 - NRC Website
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Pacific Gas & Electric with Other Unspec Reqmnt | |
WEEKMONTHYEARENS 511342015-06-07T01:03:0007 June 2015 01:03:00
[Table view]Other Unspec Reqmnt Not Meeting Technical Specifications Due to Incorrect Loading of Casks ENS 511262015-06-04T21:45:0004 June 2015 21:45:00 Other Unspec Reqmnt Not Meeting Technical Specifications Due to Omission in Previous License Amendment 2015-06-07T01:03:00 | |