ENS 54516
ENS Event | |
|---|---|
06:00 Feb 22, 2019 | |
| Title | Agreement State Report - Reportable Equipment Failure |
| Event Description | The following information was received via E-mail:
A reportable equipment failure occurred on February 22, 2019 at a panoramic irradiator licensee in Libertyville, IL. The equipment failure was not reported to Illinois Emergency Management Agency (IEMA), but identified during a February 6, 2020 routine inspection. The affected equipment has since been repaired and no impacts to health or security were identified. IEMA inspectors conducted a routine inspection at Isomedix Operations d/b/a Steris, Libertyville location, on February 6, 2020. During a review of licensee files, it was determined that on the evening of February 22, 2019, required safety equipment became disabled as a result of the cell flooding. This is reportable, at a minimum, under 32 Ill. Adm. Code 340.1220c2. Inspection findings indicate that on or about 1817 CST February 22, 2019, a coupler on a 2 inch sprinkler line in the maze of the cell broke during processing. The cell consequently flooded and began to flood the warehouse. An emergency console stop was executed at approximately 1821 CST and both racks submerged. At 1824 CST, the pool high water alarm was tripped. Inspector review of the console event log indicates within the next 80 minutes the smoke detector, exhaust fans, collision bar, inside roof plug, low air pressure, high temperature, main panel communications and loss of 110 VAC and 24VDC faults were logged. It was also noted that at 2024 CST on February 22, 2019, the source racks were moved back up. At 2024 CST, the deionizer radiation monitor alarmed. A number of alarms and faults continued until approximately 1121 CST on 2/23/19. Reportedly, up to four inches of water covered the pool and the entirety of the warehouse. The fire department was needed to shut off the main feeding the sprinklers. Inspection findings indicate, at a minimum, high and low water monitors as well as the deionizer radiation monitor were disabled due to the wiring being flooded and shorted in the trough. The wiring for multiple components were replaced and plumbers contracted to repair the sprinkler system the following day. The licensee has moved to a manually initiated dry fire suppression system. Dosimetry was evaluated and no unusual exposures noted. Interviews of staff involved indicate security systems were not impacted. Leak tests were performed on February 22, 2019. This incident remains under investigation. There is no evidence of intentional disruption of safety or security systems. Event Report ID No.: IL200005 |
| Where | |
|---|---|
| Illinois Emergency Mgmt. Agency Libertyville, Illinois (NRC Region 3) | |
| License number: | 01123-02 |
| Organization: | Illinois Emergency Mgmt. Agency |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+8409.35 h350.39 days <br />50.056 weeks <br />11.519 months <br />) | |
| Opened: | Gary Forsee 15:21 Feb 7, 2020 |
| NRC Officer: | Thomas Kendzia |
| Last Updated: | Feb 7, 2020 |
| 54516 - NRC Website | |
Illinois Emergency Management Agency with Agreement State | |||
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