Event Notification Report for June 08, 2022
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
06/07/2022 - 06/08/2022
Agreement State
Event Number: 56017
Rep Org: Colorado Dept of Health
Licensee: Quality Inn - Silverthorne
Region: 4
City: Silverthorne State: CO
County:
License #: GL000781
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Mike Stafford
Licensee: Quality Inn - Silverthorne
Region: 4
City: Silverthorne State: CO
County:
License #: GL000781
Agreement: Y
Docket:
NRC Notified By: Kathryn Kirk
HQ OPS Officer: Mike Stafford
Notification Date: 07/26/2022
Notification Time: 12:21 [ET]
Event Date: 06/08/2022
Event Time: 00:00 [MDT]
Last Update Date: 07/26/2022
Notification Time: 12:21 [ET]
Event Date: 06/08/2022
Event Time: 00:00 [MDT]
Last Update Date: 07/26/2022
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Deese, Rick (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL)
Deese, Rick (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB, (EMAIL)
AGREEMENT STATE REPORT- LOST EXIT SIGNS
The following summary was received from the Colorado Department of Public Health and Environment via email:
The Colorado Department of Public Health and Environment reported four Speclite model TP10 exit signs, containing 6.5 Curies of tritium each, lost by the licensee. The incident occurred June 8, 2022.
CO Event Report ID no.: CO220024
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
The following summary was received from the Colorado Department of Public Health and Environment via email:
The Colorado Department of Public Health and Environment reported four Speclite model TP10 exit signs, containing 6.5 Curies of tritium each, lost by the licensee. The incident occurred June 8, 2022.
CO Event Report ID no.: CO220024
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
Part 21
Event Number: 56032
Rep Org: NTS
Licensee: NTS
Region: 2
City: Huntsville State: AL
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Gary Dennis
HQ OPS Officer: Karen Cotton-Gross
Licensee: NTS
Region: 2
City: Huntsville State: AL
County:
License #:
Agreement: Y
Docket:
NRC Notified By: Gary Dennis
HQ OPS Officer: Karen Cotton-Gross
Notification Date: 08/05/2022
Notification Time: 15:10 [ET]
Event Date: 06/08/2022
Event Time: 00:00 [CDT]
Last Update Date: 08/05/2022
Notification Time: 15:10 [ET]
Event Date: 06/08/2022
Event Time: 00:00 [CDT]
Last Update Date: 08/05/2022
Emergency Class: Non Emergency
10 CFR Section:
21.21(a)(2) - Interim Eval Of Deviation
10 CFR Section:
21.21(a)(2) - Interim Eval Of Deviation
Person (Organization):
Henrion, Mark (R1DO)
Roldan-Otero, Lizette (R4DO)
Part 21/50.55 Reactors, - (EMAIL)
Henrion, Mark (R1DO)
Roldan-Otero, Lizette (R4DO)
Part 21/50.55 Reactors, - (EMAIL)
EN Revision Imported Date: 8/19/2022
EN Revision Text: PART 21 REPORT - POTENTIAL FAILURE OF SIEMENS CIRCUIT BREAKER
The following information was provided by the licensee via fax:
"Pursuant to the requirements of 10 CFR Part 21, this letter is hereby provided as notification to the NRC of a potential Part 21 condition.
"NTS received a notification from Wolf Creek Nuclear Generating Station on June 8th 2022, that a Siemens 5-3AF-GER-350-1200-78 Medium Voltage Circuit Breaker had a failure of its closing spring mounting plate.
"Per Wolf Creek contact 'Failure of a Siemens vacuum breaker's closing spring mounting plate occurred while electrical maintenance personnel were closing the breaker ... The breaker was successfully closed: however, a piece of the closing spring's mounting plate was sheared off during the evolution. Initial investigation also determined the weld associated with the mounting bracket that secures the spring mounting plate was degraded. It appears the closing spring's mounting plate may have been impacting the back of the breaker enclosure during breaker operations ... '
"This specific breaker is non-safety related and installed in a training cubicle. However, it was delivered in a lot containing an additional fourteen safety-related breakers. Even though the failed breaker is non--safety related, NTS has made the decision to be conservative and proceed with this notification.
"Upon consultation with the manufacturer (Siemens) and Wolf Creek Nuclear Generating Station, it was decided to return the breaker to Siemens for evaluation. As of the issuance of this letter, Siemens has not received the failed breaker. This letter is being issued since the evaluation will not be completed within the 60 day period following Wolf Creek notifying NTS.
"Siemens has performed multiple 10,000 cycle endurance tests on 3AF mechanisms. Therefore, it is not believed to be a 'class' problem at this time. We are limiting this notification to the specific breaker lot provided per Wyle TPQ Test Report 43404R002, dated 6/29/2000, and Wolf Creek purchase order 0705394/4 (Rev. 4).
"Wolf Creek conducted extent of condition inspections for installed, safety-related breakers. No other breakers exhibited the same level of degradation. Additional guidance may be issued once Siemens' evaluation is complete.
"Thank you and if you have any questions, please contact NTS' Senior Director of Nuclear Engineering and Test Services, Gary Dennis at (256) 716-4212 or email at gary.dennis@ntslabs.com."
The following additional information was requested from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The licensee did not provide information regarding the evaluation completion. The Headquarters Operations Center (HOC) called the contact and is awaiting a response.
EN Revision Text: PART 21 REPORT - POTENTIAL FAILURE OF SIEMENS CIRCUIT BREAKER
The following information was provided by the licensee via fax:
"Pursuant to the requirements of 10 CFR Part 21, this letter is hereby provided as notification to the NRC of a potential Part 21 condition.
"NTS received a notification from Wolf Creek Nuclear Generating Station on June 8th 2022, that a Siemens 5-3AF-GER-350-1200-78 Medium Voltage Circuit Breaker had a failure of its closing spring mounting plate.
"Per Wolf Creek contact 'Failure of a Siemens vacuum breaker's closing spring mounting plate occurred while electrical maintenance personnel were closing the breaker ... The breaker was successfully closed: however, a piece of the closing spring's mounting plate was sheared off during the evolution. Initial investigation also determined the weld associated with the mounting bracket that secures the spring mounting plate was degraded. It appears the closing spring's mounting plate may have been impacting the back of the breaker enclosure during breaker operations ... '
"This specific breaker is non-safety related and installed in a training cubicle. However, it was delivered in a lot containing an additional fourteen safety-related breakers. Even though the failed breaker is non--safety related, NTS has made the decision to be conservative and proceed with this notification.
"Upon consultation with the manufacturer (Siemens) and Wolf Creek Nuclear Generating Station, it was decided to return the breaker to Siemens for evaluation. As of the issuance of this letter, Siemens has not received the failed breaker. This letter is being issued since the evaluation will not be completed within the 60 day period following Wolf Creek notifying NTS.
"Siemens has performed multiple 10,000 cycle endurance tests on 3AF mechanisms. Therefore, it is not believed to be a 'class' problem at this time. We are limiting this notification to the specific breaker lot provided per Wyle TPQ Test Report 43404R002, dated 6/29/2000, and Wolf Creek purchase order 0705394/4 (Rev. 4).
"Wolf Creek conducted extent of condition inspections for installed, safety-related breakers. No other breakers exhibited the same level of degradation. Additional guidance may be issued once Siemens' evaluation is complete.
"Thank you and if you have any questions, please contact NTS' Senior Director of Nuclear Engineering and Test Services, Gary Dennis at (256) 716-4212 or email at gary.dennis@ntslabs.com."
The following additional information was requested from the licensee in accordance with Headquarters Operations Officers Report Guidance:
The licensee did not provide information regarding the evaluation completion. The Headquarters Operations Center (HOC) called the contact and is awaiting a response.