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| Discovered date | Reporting criterion | Title | Description | LER | |
|---|---|---|---|---|---|
| ENS 57100 | 26 April 2024 07:00:00 | Agreement State | Leaking Electron Capture Device | The following was received from the Washington State Department of Health via email: The University of Washington has indication that an electron capture device (ECD) containing nickel-63 (Ni-63) is leaking. The ECD (G1223A, serial number F7283) had been removed from the gas chromatograph (Hewlett Packard 5890) for disposal. Previous leak testing had been performed with the ECD installed in the GC, and no contamination had been identified that required reporting. The ECD contains Ni-63 that is plated onto an inner surface of the cell body. The current activity is approximately 11.9 millicuries. On April 26, 2024, a health physicist performed a leak test by taking a wipe sample on the detector inlet. The wipe from the detector inlet showed contamination of 44,536 dpm using a machine calculated efficiency of approximately 72 percent. The detector inlet indicates a contamination level of 44,536 dpm or approximately 742 Bq (0.02 microcurie). This value exceeds the limit of 185 Bq (0.005 microcurie). The ECD will be returned for recycling/disposal of the source." Washington Incident Report No.: WA-24-011 |