Event Notification Report for April 18, 2022

EN Revision Imported Date: 4/15/2022

EN Revision Text: AGREEMENT STATE REPORT - PROPORTIONAL COUNTER FAILURE

The following information was received from the Washington State Department of Health via email:

"The Radiation Protection Manager (RPM) for US Ecology (USE) notified the Washington State Department of Health (WDOH) on April 7, 2022, at 1440 PDT, of equipment which failed to function as designed in accordance with WAC 246-221-250 (2)(d). This was identified during an internal surveillance of the calibration program by the licensee. Specifically, the equipment is a Canberra Series 5 Extreme Low Background Alpha Beta Proportional counter (XLB). The spreadsheet used to calculate alpha efficiency to determine alpha activity from smears and air samples was off by 1 percent. The error for this matter will require USE to review all data from September 2021 through April 6, 2022. The preliminary cause was identified as a human performance error. An investigation is ongoing to determine the impact to health and safety. WDOH is planning a follow up investigation the week of May 9, 2022, to follow up for this matter. No media attention currently."

WA incident no.: WMS-INC-22-01

EN Revision Imported Date: 4/15/2022

EN Revision Text: AGREEMENT STATE REPORT - STOLEN GAUGE

The following was received via an email from the state of North Carolina:

"A portable nuclear density gauge was reported stolen from a job site located at a large construction site in Kernersville, NC. The gauge was secured in a large Conex box (large cargo container) at the site. Inside the Conex box there is a rigid box secured to the inside of the Conex box. The gauge was secured and locked inside of this rigid box and the Conex box itself was locked as well. On 4/11, licensee personnel discovered that the rigid box containing the gauge was missing from inside the Conex box.

"An inspector has been assigned this incident for investigation and details will follow to update, close, and complete this report."

North Carolina Tracking Number: 220003.

THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

EN Revision Imported Date: 4/15/2022

EN Revision Text: AGREEMENT STATE REPORT - LOST STATIC ELIMINATOR

The following information was provided by the state of Colorado via email:

"Static Eliminator Model P-2021 reported as lost by new tenant of building previously occupied by Service King. Service King ended a lease agreement with the owner and was noted on Service King's registration that the static eliminator was surrendered as property of the building per lease agreement and they were not allowed in the building to retrieve the unit. After connecting and corresponding with the current tenants' (Classic Collision) manager he informed [the CO Department of Health] when they moved into the building everything had been removed except for a spray booth. He did look for the device but it was not found.

"Isotope: Po-210
Manufacturer: NRD, LLC.
Model: P-2021
Device: Static Eliminator
Serial number: A2LT196
Activity: .01 Ci"

CO Event Report ID No.: CO220009

THIS MATERIAL EVENT CONTAINS A 'Less than Cat 3' LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

AUTOMATIC REACTOR TRIP DURING CONTROL ROD TESTING

The following information was provided by the licensee via email:

"On April 14, 2022, at 0928 [EDT] hours, Unit 1 automatically tripped from 100 percent power during the control rod operability periodic test. The reactor trip occurred during the manipulation of the rod control mode selector switch as part of the rod operability testing. The Operations crew entered the reactor trip procedure and stabilized Unit 1 in Mode 3 at normal operating temperature and pressure. The reactor trip was uncomplicated, and all control rods fully inserted into the core. This reactor protection system actuation is reportable per 10 CFR 50.72(b)(2)(iv)(B). The Auxiliary Feedwater pumps actuated as designed because of the reactor trip and provide makeup flow to the steam generators. The automatic start of the Auxiliary Feedwater system is reportable per 10 CFR 50.72(b)(3)(iv) (A) for a valid actuation of an ESF [Engineered Safety Features] system. The Auxiliary Feedwater pumps were subsequently secured and returned to automatic. Decay heat is being removed by the condenser steam dump system. Unit 1 is in a normal shutdown electrical lineup. An investigation into the cause of the reactor trip is underway."

The NRC Resident Inspector has been notified.

The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:

There was no affect to Unit 2. Unit 2 is operating at 100 percent power.

NOTIFICATION OF ENVIRONMENTAL REPORT TO ANOTHER GOVERNMENT AGENCY

The following information was provided by the licensee via email:

"On April 15, 2022 at 1000 hours (EDT), four off-site notifications were made to the Commonwealth of Massachusetts Department of Environmental ÿProtection (MADEP) in accordance with the Massachusetts Contingency Plan (310 CMR 40.0000). ÿThe notifications document non-radiological contaminants found slightly above reportable concentrations in select soil and groundwater samples collected during site characterization efforts, as part of the decommissioning process, from four parcels of land at the property.ÿ ÿReportable concentrations in soil were identified in a composite sample for Polychlorinated Biphenyls (PCBs). ÿReportable concentrations in groundwater were identified in samples for per- and polyfluoroalkyl substances (PFAS) and Semi Volatile Organic Compound (SVOC). Additionally, the reports include sample results where laboratory reporting limits equaled or exceeded reporting thresholds. This notification is being made solely as a four-hour, non-emergency notification for a Notification of Other Government Agency in accordance with 10 CFR 50.72(b)(2)(xi).ÿ There was no impact on the health and safety of the public or plant personnel. The NRC Lead Decommissioning Inspector and NMSS Project Manager assigned to Pilgrim have been notified."